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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 12:56:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 12:56:19 -0700
commit01e5d1830cf54ac45768ef9ceb3e79cea2e1198c (patch)
tree139cab6f6ea7e927d07e75028a74e7a98d554055
parentMerge tag 'Wimplicit-fallthrough-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux (diff)
parentmmc: sdhci-pci: Fix BYT OCP setting (diff)
downloadlinux-dev-01e5d1830cf54ac45768ef9ceb3e79cea2e1198c.tar.xz
linux-dev-01e5d1830cf54ac45768ef9ceb3e79cea2e1198c.zip
Merge tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson: "MMC core: - Fix a few memoryleaks - Minor improvements to the card initialization sequence - Partially support sleepy GPIO controllers for pwrseq eMMC MMC host: - alcor: Work with multiple-entry sglists - alcor: Enable DMA for writes - meson-gx: Improve tuning support - meson-gx: Avoid clock glitch when switching to DDR modes - meson-gx: Disable unreliable HS400 mode - mmci: Minor updates for support of HW busy detection - mmci: Support data transfers for the stm32_sdmmc variant - mmci: Restructure code to better support different variants - mtk-sd: Add support for version found on MT7620 family SOCs - mtk-sd: Add support for the MT8516 version - mtk-sd: Add Chaotian Jing as the maintainer - sdhci: Reorganize request-code to convert from tasklet to workqueue - sdhci_am654: Stabilize support for lower speed modes - sdhci-esdhc-imx: Add HS400 support for iMX7ULP - sdhci-esdhc-imx: Add support for iMX7ULP version - sdhci-of-arasan: Allow to disable DCMDs via DT for CQE - sdhci-of-esdhc: Add support for the ls1028a version - sdhci-of-esdhc: Several fixups for errata - sdhci-pci: Fix BYT OCP setting - sdhci-pci: Add support for Intel CML - sdhci-tegra: Add support for system suspend/resume - sdhci-tegra: Add CQE support for Tegra186 WAR - sdhci-tegra: Add support for Tegra194 - sdhci-tegra: Update HW tuning process MEMSTICK: - I volunteered to help as a maintainer for the memstick subsystem, which is reflected by an update to the MAINTAINERS file. Changes are funneled through my MMC git and we will use the linux-mmc mailing list. MEMSTICK host: - A few minor cleanups" * tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (87 commits) mmc: sdhci-pci: Fix BYT OCP setting dt-bindings: mmc: add DT bindings for ls1028a eSDHC host controller mmc: alcor: Drop pointer to mmc_host from alcor_sdmmc_host mmc: mtk-sd: select REGULATOR mmc: mtk-sd: enable internal card-detect logic. mmc: mtk-sd: add support for config found in mt7620 family SOCs. mmc: mtk-sd: don't hard-code interrupt trigger type mmc: core: Fix tag set memory leak dt-bindings: mmc: Add support for MT8516 to mtk-sd mmc: mmci: Prevent polling for busy detection in IRQ context mmc: mmci: Cleanup mmci_cmd_irq() for busy detect mmc: usdhi6rol0: mark expected switch fall-throughs mmc: core: Verify SD bus width mmc: sdhci-esdhc-imx: Add HS400 support for iMX7ULP mmc: sdhci-esdhc-imx: add pm_qos to interact with cpuidle dt-bindings: mmc: fsl-imx-esdhc: add imx7ulp compatible string mmc: meson-gx: add signal resampling tuning mmc: meson-gx: remove Rx phase tuning mmc: meson-gx: avoid clock glitch when switching to DDR modes mmc: meson-gx: disable HS400 ...
-rw-r--r--Documentation/devicetree/bindings/mmc/fsl-esdhc.txt1
-rw-r--r--Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt1
-rw-r--r--Documentation/devicetree/bindings/mmc/mmc.txt2
-rw-r--r--Documentation/devicetree/bindings/mmc/mtk-sd.txt2
-rw-r--r--Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt1
-rw-r--r--MAINTAINERS25
-rw-r--r--drivers/memstick/host/jmb38x_ms.c3
-rw-r--r--drivers/memstick/host/tifm_ms.c3
-rw-r--r--drivers/mmc/core/host.c4
-rw-r--r--drivers/mmc/core/mmc_ops.c16
-rw-r--r--drivers/mmc/core/pwrseq_emmc.c38
-rw-r--r--drivers/mmc/core/queue.c1
-rw-r--r--drivers/mmc/core/sd.c8
-rw-r--r--drivers/mmc/host/Kconfig46
-rw-r--r--drivers/mmc/host/alcor.c72
-rw-r--r--drivers/mmc/host/cqhci.c2
-rw-r--r--drivers/mmc/host/cqhci.h4
-rw-r--r--drivers/mmc/host/meson-gx-mmc.c419
-rw-r--r--drivers/mmc/host/mmc_spi.c98
-rw-r--r--drivers/mmc/host/mmci.c82
-rw-r--r--drivers/mmc/host/mmci.h32
-rw-r--r--drivers/mmc/host/mmci_qcom_dml.c17
-rw-r--r--drivers/mmc/host/mmci_qcom_dml.h30
-rw-r--r--drivers/mmc/host/mmci_stm32_sdmmc.c18
-rw-r--r--drivers/mmc/host/mtk-sd.c97
-rw-r--r--drivers/mmc/host/mxs-mmc.c3
-rw-r--r--drivers/mmc/host/of_mmc_spi.c6
-rw-r--r--drivers/mmc/host/omap_hsmmc.c4
-rw-r--r--drivers/mmc/host/renesas_sdhi.h2
-rw-r--r--drivers/mmc/host/renesas_sdhi_core.c12
-rw-r--r--drivers/mmc/host/renesas_sdhi_internal_dmac.c11
-rw-r--r--drivers/mmc/host/renesas_sdhi_sys_dmac.c6
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c41
-rw-r--r--drivers/mmc/host/sdhci-of-arasan.c5
-rw-r--r--drivers/mmc/host/sdhci-of-esdhc.c47
-rw-r--r--drivers/mmc/host/sdhci-omap.c2
-rw-r--r--drivers/mmc/host/sdhci-pci-core.c98
-rw-r--r--drivers/mmc/host/sdhci-pci.h2
-rw-r--r--drivers/mmc/host/sdhci-tegra.c362
-rw-r--r--drivers/mmc/host/sdhci.c164
-rw-r--r--drivers/mmc/host/sdhci.h4
-rw-r--r--drivers/mmc/host/sdhci_am654.c22
-rw-r--r--drivers/mmc/host/tmio_mmc.h6
-rw-r--r--drivers/mmc/host/tmio_mmc_core.c6
-rw-r--r--drivers/mmc/host/usdhi6rol0.c9
-rw-r--r--include/linux/alcor_pci.h2
46 files changed, 1170 insertions, 666 deletions
diff --git a/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
index 99c5cf8507e8..edb8cadb9541 100644
--- a/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
+++ b/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
@@ -17,6 +17,7 @@ Required properties:
"fsl,t4240-esdhc"
Possible compatibles for ARM:
"fsl,ls1012a-esdhc"
+ "fsl,ls1028a-esdhc"
"fsl,ls1088a-esdhc"
"fsl,ls1043a-esdhc"
"fsl,ls1046a-esdhc"
diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
index 540c65ed9cba..f707b8bee304 100644
--- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
+++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
@@ -17,6 +17,7 @@ Required properties:
"fsl,imx6sx-usdhc"
"fsl,imx6ull-usdhc"
"fsl,imx7d-usdhc"
+ "fsl,imx7ulp-usdhc"
"fsl,imx8qxp-usdhc"
Optional properties:
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index cdbcfd3a4ff2..c269dbe384fe 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -64,6 +64,8 @@ Optional properties:
whether pwrseq-simple is used. Default to 10ms if no available.
- supports-cqe : The presence of this property indicates that the corresponding
MMC host controller supports HW command queue feature.
+- disable-cqe-dcmd: This property indicates that the MMC controller's command
+ queue engine (CQE) does not support direct commands (DCMDs).
*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
polarity properties, we have to fix the meaning of the "normal" and "inverted"
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
index f5bcda3980cc..8a532f4453f2 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
@@ -11,10 +11,12 @@ Required properties:
"mediatek,mt8135-mmc": for mmc host ip compatible with mt8135
"mediatek,mt8173-mmc": for mmc host ip compatible with mt8173
"mediatek,mt8183-mmc": for mmc host ip compatible with mt8183
+ "mediatek,mt8516-mmc": for mmc host ip compatible with mt8516
"mediatek,mt2701-mmc": for mmc host ip compatible with mt2701
"mediatek,mt2712-mmc": for mmc host ip compatible with mt2712
"mediatek,mt7622-mmc": for MT7622 SoC
"mediatek,mt7623-mmc", "mediatek,mt2701-mmc": for MT7623 SoC
+ "mediatek,mt7620-mmc", for MT7621 SoC (and others)
- reg: physical base address of the controller and length
- interrupts: Should contain MSDC interrupt number
diff --git a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
index 2cecdc71d94c..2cf3affa1be7 100644
--- a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
@@ -14,6 +14,7 @@ Required properties:
- "nvidia,tegra124-sdhci": for Tegra124 and Tegra132
- "nvidia,tegra210-sdhci": for Tegra210
- "nvidia,tegra186-sdhci": for Tegra186
+ - "nvidia,tegra194-sdhci": for Tegra194
- clocks : Must contain one entry, for the module clock.
See ../clocks/clock-bindings.txt for details.
- resets : Must contain an entry for each entry in reset-names.
diff --git a/MAINTAINERS b/MAINTAINERS
index 0a52061eacae..bf13e161b138 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9785,6 +9785,12 @@ F: drivers/media/platform/mtk-vpu/
F: Documentation/devicetree/bindings/media/mediatek-vcodec.txt
F: Documentation/devicetree/bindings/media/mediatek-vpu.txt
+MEDIATEK MMC/SD/SDIO DRIVER
+M: Chaotian Jing <chaotian.jing@mediatek.com>
+S: Maintained
+F: drivers/mmc/host/mtk-sd.c
+F: Documentation/devicetree/bindings/mmc/mtk-sd.txt
+
MEDIATEK MT76 WIRELESS LAN DRIVER
M: Felix Fietkau <nbd@nbd.name>
M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
@@ -14484,16 +14490,15 @@ T: git git://linuxtv.org/media_tree.git
S: Maintained
F: drivers/media/i2c/imx355.c
-SONY MEMORYSTICK CARD SUPPORT
-M: Alex Dubov <oakad@yahoo.com>
-W: http://tifmxx.berlios.de/
-S: Maintained
-F: drivers/memstick/host/tifm_ms.c
-
-SONY MEMORYSTICK STANDARD SUPPORT
+SONY MEMORYSTICK SUBSYSTEM
M: Maxim Levitsky <maximlevitsky@gmail.com>
+M: Alex Dubov <oakad@yahoo.com>
+M: Ulf Hansson <ulf.hansson@linaro.org>
+L: linux-mmc@vger.kernel.org
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
S: Maintained
-F: drivers/memstick/core/ms_block.*
+F: drivers/memstick/
+F: include/linux/memstick.h
SONY VAIO CONTROL DEVICE DRIVER
M: Mattia Dongili <malattia@linux.it>
@@ -15518,9 +15523,11 @@ S: Maintained
F: drivers/net/ethernet/ti/cpsw*
F: drivers/net/ethernet/ti/davinci*
-TI FLASH MEDIA INTERFACE DRIVER
+TI FLASH MEDIA MEMORYSTICK/MMC DRIVERS
M: Alex Dubov <oakad@yahoo.com>
S: Maintained
+W: http://tifmxx.berlios.de/
+F: drivers/memstick/host/tifm_ms.c
F: drivers/misc/tifm*
F: drivers/mmc/host/tifm_sd.c
F: include/linux/tifm.h
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index b4f3d64e7da8..5733e8fe1aef 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -370,7 +370,6 @@ static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
- unsigned char *data;
unsigned int data_len, cmd, t_val;
if (!(STATUS_HAS_MEDIA & readl(host->addr + STATUS))) {
@@ -402,8 +401,6 @@ static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
cmd |= TPC_WAIT_INT;
}
- data = host->req->data;
-
if (!no_dma)
host->cmd_flags |= DMA_DATA;
diff --git a/drivers/memstick/host/tifm_ms.c b/drivers/memstick/host/tifm_ms.c
index 1bbb2ead9556..6b13ac56eb27 100644
--- a/drivers/memstick/host/tifm_ms.c
+++ b/drivers/memstick/host/tifm_ms.c
@@ -256,7 +256,6 @@ static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
static int tifm_ms_issue_cmd(struct tifm_ms *host)
{
struct tifm_dev *sock = host->dev;
- unsigned char *data;
unsigned int data_len, cmd, sys_param;
host->cmd_flags = 0;
@@ -265,8 +264,6 @@ static int tifm_ms_issue_cmd(struct tifm_ms *host)
host->io_word = 0;
host->cmd_flags = 0;
- data = host->req->data;
-
host->use_dma = !no_dma;
if (host->req->long_data) {
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 3a4402a79904..6a51f7a06ce7 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -363,11 +363,11 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask)
int num_ranges, i;
voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges);
- num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
if (!voltage_ranges) {
pr_debug("%pOF: voltage-ranges unspecified\n", np);
return 0;
}
+ num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
if (!num_ranges) {
pr_err("%pOF: voltage-ranges empty\n", np);
return -EINVAL;
@@ -429,8 +429,6 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
if (mmc_gpio_alloc(host)) {
put_device(&host->class_dev);
- ida_simple_remove(&mmc_host_ida, host->index);
- kfree(host);
return NULL;
}
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index c5208fb312ae..a533cab8fccc 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -184,11 +184,7 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
if (err)
break;
- /* if we're just probing, do a single pass */
- if (ocr == 0)
- break;
-
- /* otherwise wait until reset completes */
+ /* wait until reset completes */
if (mmc_host_is_spi(host)) {
if (!(cmd.resp[0] & R1_SPI_IDLE))
break;
@@ -200,6 +196,16 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
err = -ETIMEDOUT;
mmc_delay(10);
+
+ /*
+ * According to eMMC specification v5.1 section 6.4.3, we
+ * should issue CMD1 repeatedly in the idle state until
+ * the eMMC is ready. Otherwise some eMMC devices seem to enter
+ * the inactive mode after mmc_init_card() issued CMD0 when
+ * the eMMC device is busy.
+ */
+ if (!ocr && !mmc_host_is_spi(host))
+ cmd.arg = cmd.resp[0] | BIT(30);
}
if (rocr && !mmc_host_is_spi(host))
diff --git a/drivers/mmc/core/pwrseq_emmc.c b/drivers/mmc/core/pwrseq_emmc.c
index efb8a7965dd4..154f4204d58c 100644
--- a/drivers/mmc/core/pwrseq_emmc.c
+++ b/drivers/mmc/core/pwrseq_emmc.c
@@ -30,19 +30,14 @@ struct mmc_pwrseq_emmc {
#define to_pwrseq_emmc(p) container_of(p, struct mmc_pwrseq_emmc, pwrseq)
-static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq)
-{
- gpiod_set_value(pwrseq->reset_gpio, 1);
- udelay(1);
- gpiod_set_value(pwrseq->reset_gpio, 0);
- udelay(200);
-}
-
static void mmc_pwrseq_emmc_reset(struct mmc_host *host)
{
struct mmc_pwrseq_emmc *pwrseq = to_pwrseq_emmc(host->pwrseq);
- __mmc_pwrseq_emmc_reset(pwrseq);
+ gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
+ udelay(1);
+ gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);
+ udelay(200);
}
static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
@@ -50,8 +45,11 @@ static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
{
struct mmc_pwrseq_emmc *pwrseq = container_of(this,
struct mmc_pwrseq_emmc, reset_nb);
+ gpiod_set_value(pwrseq->reset_gpio, 1);
+ udelay(1);
+ gpiod_set_value(pwrseq->reset_gpio, 0);
+ udelay(200);
- __mmc_pwrseq_emmc_reset(pwrseq);
return NOTIFY_DONE;
}
@@ -72,14 +70,18 @@ static int mmc_pwrseq_emmc_probe(struct platform_device *pdev)
if (IS_ERR(pwrseq->reset_gpio))
return PTR_ERR(pwrseq->reset_gpio);
- /*
- * register reset handler to ensure emmc reset also from
- * emergency_reboot(), priority 255 is the highest priority
- * so it will be executed before any system reboot handler.
- */
- pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
- pwrseq->reset_nb.priority = 255;
- register_restart_handler(&pwrseq->reset_nb);
+ if (!gpiod_cansleep(pwrseq->reset_gpio)) {
+ /*
+ * register reset handler to ensure emmc reset also from
+ * emergency_reboot(), priority 255 is the highest priority
+ * so it will be executed before any system reboot handler.
+ */
+ pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
+ pwrseq->reset_nb.priority = 255;
+ register_restart_handler(&pwrseq->reset_nb);
+ } else {
+ dev_notice(dev, "EMMC reset pin tied to a sleepy GPIO driver; reset on emergency-reboot disabled\n");
+ }
pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops;
pwrseq->pwrseq.dev = dev;
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 7c364a9c4eeb..b5b9c6142f08 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -472,6 +472,7 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
blk_mq_unquiesce_queue(q);
blk_cleanup_queue(q);
+ blk_mq_free_tag_set(&mq->tag_set);
/*
* A request can be completed before the next request, potentially
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 265e1aeeb9d8..d3d32f9a2cb1 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -221,6 +221,14 @@ static int mmc_decode_scr(struct mmc_card *card)
if (scr->sda_spec3)
scr->cmds = UNSTUFF_BITS(resp, 32, 2);
+
+ /* SD Spec says: any SD Card shall set at least bits 0 and 2 */
+ if (!(scr->bus_widths & SD_SCR_BUS_WIDTH_1) ||
+ !(scr->bus_widths & SD_SCR_BUS_WIDTH_4)) {
+ pr_err("%s: invalid bus width\n", mmc_hostname(card->host));
+ return -EINVAL;
+ }
+
return 0;
}
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 28fcd8f580a1..0e86340536b6 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -92,6 +92,7 @@ config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI
select MMC_CQHCI
+ select IOSF_MBI if X86
help
This selects the PCI Secure Digital Host Controller Interface.
Most controllers found today are PCI devices.
@@ -437,7 +438,7 @@ config MMC_WBSD
depends on ISA_DMA_API
help
This selects the Winbond(R) W83L51xD Secure digital and
- Multimedia card Interface.
+ Multimedia card Interface.
If you have a machine with a integrated W83L518D or W83L519D
SD/MMC card reader, say Y or M here.
@@ -515,7 +516,7 @@ config MMC_TIFM_SD
'Misc devices: TI Flash Media PCI74xx/PCI76xx host adapter support
(TIFM_7XX1)'.
- To compile this driver as a module, choose M here: the
+ To compile this driver as a module, choose M here: the
module will be called tifm_sd.
config MMC_MVSDIO
@@ -531,12 +532,12 @@ config MMC_MVSDIO
module will be called mvsdio.
config MMC_DAVINCI
- tristate "TI DAVINCI Multimedia Card Interface support"
- depends on ARCH_DAVINCI
- help
- This selects the TI DAVINCI Multimedia card Interface.
- If you have an DAVINCI board with a Multimedia Card slot,
- say Y or M here. If unsure, say N.
+ tristate "TI DAVINCI Multimedia Card Interface support"
+ depends on ARCH_DAVINCI
+ help
+ This selects the TI DAVINCI Multimedia card Interface.
+ If you have an DAVINCI board with a Multimedia Card slot,
+ say Y or M here. If unsure, say N.
config MMC_GOLDFISH
tristate "goldfish qemu Multimedia Card Interface support"
@@ -565,18 +566,18 @@ config MMC_S3C
depends on S3C24XX_DMAC
help
This selects a driver for the MCI interface found in
- Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.
+ Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.
If you have a board based on one of those and a MMC/SD
slot, say Y or M here.
If unsure, say N.
config MMC_S3C_HW_SDIO_IRQ
- bool "Hardware support for SDIO IRQ"
- depends on MMC_S3C
- help
- Enable the hardware support for SDIO interrupts instead of using
- the generic polling code.
+ bool "Hardware support for SDIO IRQ"
+ depends on MMC_S3C
+ help
+ Enable the hardware support for SDIO interrupts instead of using
+ the generic polling code.
choice
prompt "Samsung S3C SD/MMC transfer code"
@@ -941,6 +942,7 @@ config MMC_BCM2835
config MMC_MTK
tristate "MediaTek SD/MMC Card Interface support"
depends on HAS_DMA
+ select REGULATOR
help
This selects the MediaTek(R) Secure digital and Multimedia card Interface.
If you have a machine with a integrated SD/MMC card reader, say Y or M here.
@@ -948,15 +950,16 @@ config MMC_MTK
If unsure, say N.
config MMC_SDHCI_MICROCHIP_PIC32
- tristate "Microchip PIC32MZDA SDHCI support"
- depends on MMC_SDHCI && PIC32MZDA && MMC_SDHCI_PLTFM
- help
- This selects the Secure Digital Host Controller Interface (SDHCI)
- for PIC32MZDA platform.
+ tristate "Microchip PIC32MZDA SDHCI support"
+ depends on MMC_SDHCI && PIC32MZDA && MMC_SDHCI_PLTFM
+ help
+ This selects the Secure Digital Host Controller Interface (SDHCI)
+ for PIC32MZDA platform.
- If you have a controller with this interface, say Y or M here.
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
- If unsure, say N.
config MMC_SDHCI_BRCMSTB
tristate "Broadcom SDIO/SD/MMC support"
depends on ARCH_BRCMSTB || BMIPS_GENERIC
@@ -993,6 +996,7 @@ config MMC_SDHCI_OMAP
config MMC_SDHCI_AM654
tristate "Support for the SDHCI Controller in TI's AM654 SOCs"
depends on MMC_SDHCI_PLTFM && OF
+ select MMC_SDHCI_IO_ACCESSORS
help
This selects the Secure Digital Host Controller Interface (SDHCI)
support present in TI's AM654 SOCs. The controller supports
diff --git a/drivers/mmc/host/alcor.c b/drivers/mmc/host/alcor.c
index 6e6b7ade4b60..e481535cba2b 100644
--- a/drivers/mmc/host/alcor.c
+++ b/drivers/mmc/host/alcor.c
@@ -43,7 +43,6 @@ struct alcor_sdmmc_host {
struct device *dev;
struct alcor_pci_priv *alcor_pci;
- struct mmc_host *mmc;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
@@ -117,6 +116,9 @@ static void alcor_reset(struct alcor_sdmmc_host *host, u8 val)
dev_err(host->dev, "%s: timeout\n", __func__);
}
+/*
+ * Perform DMA I/O of a single page.
+ */
static void alcor_data_set_dma(struct alcor_sdmmc_host *host)
{
struct alcor_pci_priv *priv = host->alcor_pci;
@@ -153,12 +155,26 @@ static void alcor_trigger_data_transfer(struct alcor_sdmmc_host *host)
ctrl |= AU6601_DATA_WRITE;
if (data->host_cookie == COOKIE_MAPPED) {
+ /*
+ * For DMA transfers, this function is called just once,
+ * at the start of the operation. The hardware can only
+ * perform DMA I/O on a single page at a time, so here
+ * we kick off the transfer with the first page, and expect
+ * subsequent pages to be transferred upon IRQ events
+ * indicating that the single-page DMA was completed.
+ */
alcor_data_set_dma(host);
ctrl |= AU6601_DATA_DMA_MODE;
host->dma_on = 1;
alcor_write32(priv, data->sg_count * 0x1000,
AU6601_REG_BLOCK_SIZE);
} else {
+ /*
+ * For PIO transfers, we break down each operation
+ * into several sector-sized transfers. When one sector has
+ * complete, the IRQ handler will call this function again
+ * to kick off the transfer of the next sector.
+ */
alcor_write32(priv, data->blksz, AU6601_REG_BLOCK_SIZE);
}
@@ -276,7 +292,7 @@ static void alcor_send_cmd(struct alcor_sdmmc_host *host,
break;
default:
dev_err(host->dev, "%s: cmd->flag (0x%02x) is not valid\n",
- mmc_hostname(host->mmc), mmc_resp_type(cmd));
+ mmc_hostname(mmc_from_priv(host)), mmc_resp_type(cmd));
break;
}
@@ -317,7 +333,7 @@ static void alcor_request_complete(struct alcor_sdmmc_host *host,
host->data = NULL;
host->dma_on = 0;
- mmc_request_done(host->mmc, mrq);
+ mmc_request_done(mmc_from_priv(host), mrq);
}
static void alcor_finish_data(struct alcor_sdmmc_host *host)
@@ -547,7 +563,7 @@ static void alcor_cd_irq(struct alcor_sdmmc_host *host, u32 intmask)
alcor_request_complete(host, 1);
}
- mmc_detect_change(host->mmc, msecs_to_jiffies(1));
+ mmc_detect_change(mmc_from_priv(host), msecs_to_jiffies(1));
}
static irqreturn_t alcor_irq_thread(int irq, void *d)
@@ -771,12 +787,17 @@ static void alcor_pre_req(struct mmc_host *mmc,
data->host_cookie = COOKIE_UNMAPPED;
/* FIXME: looks like the DMA engine works only with CMD18 */
- if (cmd->opcode != 18)
+ if (cmd->opcode != MMC_READ_MULTIPLE_BLOCK
+ && cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK)
return;
/*
* We don't do DMA on "complex" transfers, i.e. with
- * non-word-aligned buffers or lengths. Also, we don't bother
- * with all the DMA setup overhead for short transfers.
+ * non-word-aligned buffers or lengths. A future improvement
+ * could be made to use temporary DMA bounce-buffers when these
+ * requirements are not met.
+ *
+ * Also, we don't bother with all the DMA setup overhead for
+ * short transfers.
*/
if (data->blocks * data->blksz < AU6601_MAX_DMA_BLOCK_SIZE)
return;
@@ -787,6 +808,8 @@ static void alcor_pre_req(struct mmc_host *mmc,
for_each_sg(data->sg, sg, data->sg_len, i) {
if (sg->length != AU6601_MAX_DMA_BLOCK_SIZE)
return;
+ if (sg->offset != 0)
+ return;
}
/* This data might be unmapped at this time */
@@ -1024,7 +1047,7 @@ static void alcor_hw_uninit(struct alcor_sdmmc_host *host)
static void alcor_init_mmc(struct alcor_sdmmc_host *host)
{
- struct mmc_host *mmc = host->mmc;
+ struct mmc_host *mmc = mmc_from_priv(host);
mmc->f_min = AU6601_MIN_CLOCK;
mmc->f_max = AU6601_MAX_CLOCK;
@@ -1036,26 +1059,21 @@ static void alcor_init_mmc(struct alcor_sdmmc_host *host)
mmc->ops = &alcor_sdc_ops;
/* The hardware does DMA data transfer of 4096 bytes to/from a single
- * buffer address. Scatterlists are not supported, but upon DMA
- * completion (signalled via IRQ), the original vendor driver does
- * then immediately set up another DMA transfer of the next 4096
- * bytes.
- *
- * This means that we need to handle the I/O in 4096 byte chunks.
- * Lacking a way to limit the sglist entries to 4096 bytes, we instead
- * impose that only one segment is provided, with maximum size 4096,
- * which also happens to be the minimum size. This means that the
- * single-entry sglist handled by this driver can be handed directly
- * to the hardware, nice and simple.
+ * buffer address. Scatterlists are not supported at the hardware
+ * level, however we can work with them at the driver level,
+ * provided that each segment is exactly 4096 bytes in size.
+ * Upon DMA completion of a single segment (signalled via IRQ), we
+ * immediately proceed to transfer the next segment from the
+ * scatterlist.
*
- * Unfortunately though, that means we only do 4096 bytes I/O per
- * MMC command. A future improvement would be to make the driver
- * accept sg lists and entries of any size, and simply iterate
- * through them 4096 bytes at a time.
+ * The overall request is limited to 240 sectors, matching the
+ * original vendor driver.
*/
mmc->max_segs = AU6601_MAX_DMA_SEGMENTS;
mmc->max_seg_size = AU6601_MAX_DMA_BLOCK_SIZE;
- mmc->max_req_size = mmc->max_seg_size;
+ mmc->max_blk_count = 240;
+ mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size;
+ dma_set_max_seg_size(host->dev, mmc->max_seg_size);
}
static int alcor_pci_sdmmc_drv_probe(struct platform_device *pdev)
@@ -1072,7 +1090,6 @@ static int alcor_pci_sdmmc_drv_probe(struct platform_device *pdev)
}
host = mmc_priv(mmc);
- host->mmc = mmc;
host->dev = &pdev->dev;
host->cur_power_mode = MMC_POWER_UNDEFINED;
host->alcor_pci = priv;
@@ -1104,13 +1121,14 @@ static int alcor_pci_sdmmc_drv_probe(struct platform_device *pdev)
static int alcor_pci_sdmmc_drv_remove(struct platform_device *pdev)
{
struct alcor_sdmmc_host *host = dev_get_drvdata(&pdev->dev);
+ struct mmc_host *mmc = mmc_from_priv(host);
if (cancel_delayed_work_sync(&host->timeout_work))
alcor_request_complete(host, 0);
alcor_hw_uninit(host);
- mmc_remove_host(host->mmc);
- mmc_free_host(host->mmc);
+ mmc_remove_host(mmc);
+ mmc_free_host(mmc);
return 0;
}
diff --git a/drivers/mmc/host/cqhci.c b/drivers/mmc/host/cqhci.c
index a8af682a9182..d59cb0a51964 100644
--- a/drivers/mmc/host/cqhci.c
+++ b/drivers/mmc/host/cqhci.c
@@ -537,6 +537,8 @@ static void cqhci_prep_dcmd_desc(struct mmc_host *mmc,
CQHCI_ACT(0x5) |
CQHCI_CMD_INDEX(mrq->cmd->opcode) |
CQHCI_CMD_TIMING(timing) | CQHCI_RESP_TYPE(resp_type));
+ if (cq_host->ops->update_dcmd_desc)
+ cq_host->ops->update_dcmd_desc(mmc, mrq, &data);
*task_desc |= data;
desc = (u8 *)task_desc;
pr_debug("%s: cqhci: dcmd: cmd: %d timing: %d resp: %d\n",
diff --git a/drivers/mmc/host/cqhci.h b/drivers/mmc/host/cqhci.h
index 9e68286a07b4..1e8e01d81015 100644
--- a/drivers/mmc/host/cqhci.h
+++ b/drivers/mmc/host/cqhci.h
@@ -88,6 +88,7 @@
/* send status config 1 */
#define CQHCI_SSC1 0x40
+#define CQHCI_SSC1_CBC_MASK GENMASK(19, 16)
/* send status config 2 */
#define CQHCI_SSC2 0x44
@@ -147,6 +148,7 @@
struct cqhci_host_ops;
struct mmc_host;
+struct mmc_request;
struct cqhci_slot;
struct cqhci_host {
@@ -210,6 +212,8 @@ struct cqhci_host_ops {
u32 (*read_l)(struct cqhci_host *host, int reg);
void (*enable)(struct mmc_host *mmc);
void (*disable)(struct mmc_host *mmc, bool recovery);
+ void (*update_dcmd_desc)(struct mmc_host *mmc, struct mmc_request *mrq,
+ u64 *data);
};
static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg)
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 2eba507790e4..c5a8af4ca76b 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/device.h>
+#include <linux/iopoll.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
@@ -48,6 +49,8 @@
#define CLK_CORE_PHASE_MASK GENMASK(9, 8)
#define CLK_TX_PHASE_MASK GENMASK(11, 10)
#define CLK_RX_PHASE_MASK GENMASK(13, 12)
+#define CLK_PHASE_0 0
+#define CLK_PHASE_180 2
#define CLK_V2_TX_DELAY_MASK GENMASK(19, 16)
#define CLK_V2_RX_DELAY_MASK GENMASK(23, 20)
#define CLK_V2_ALWAYS_ON BIT(24)
@@ -56,10 +59,6 @@
#define CLK_V3_RX_DELAY_MASK GENMASK(27, 22)
#define CLK_V3_ALWAYS_ON BIT(28)
-#define CLK_DELAY_STEP_PS 200
-#define CLK_PHASE_STEP 30
-#define CLK_PHASE_POINT_NUM (360 / CLK_PHASE_STEP)
-
#define CLK_TX_DELAY_MASK(h) (h->data->tx_delay_mask)
#define CLK_RX_DELAY_MASK(h) (h->data->rx_delay_mask)
#define CLK_ALWAYS_ON(h) (h->data->always_on)
@@ -164,10 +163,10 @@ struct meson_host {
void __iomem *regs;
struct clk *core_clk;
+ struct clk *mux_clk;
struct clk *mmc_clk;
- struct clk *rx_clk;
- struct clk *tx_clk;
unsigned long req_rate;
+ bool ddr;
struct pinctrl *pinctrl;
struct pinctrl_state *pins_default;
@@ -207,90 +206,6 @@ struct meson_host {
#define CMD_RESP_MASK GENMASK(31, 1)
#define CMD_RESP_SRAM BIT(0)
-struct meson_mmc_phase {
- struct clk_hw hw;
- void __iomem *reg;
- unsigned long phase_mask;
- unsigned long delay_mask;
- unsigned int delay_step_ps;
-};
-
-#define to_meson_mmc_phase(_hw) container_of(_hw, struct meson_mmc_phase, hw)
-
-static int meson_mmc_clk_get_phase(struct clk_hw *hw)
-{
- struct meson_mmc_phase *mmc = to_meson_mmc_phase(hw);
- unsigned int phase_num = 1 << hweight_long(mmc->phase_mask);
- unsigned long period_ps, p, d;
- int degrees;
- u32 val;
-
- val = readl(mmc->reg);
- p = (val & mmc->phase_mask) >> __ffs(mmc->phase_mask);
- degrees = p * 360 / phase_num;
-
- if (mmc->delay_mask) {
- period_ps = DIV_ROUND_UP((unsigned long)NSEC_PER_SEC * 1000,
- clk_get_rate(hw->clk));
- d = (val & mmc->delay_mask) >> __ffs(mmc->delay_mask);
- degrees += d * mmc->delay_step_ps * 360 / period_ps;
- degrees %= 360;
- }
-
- return degrees;
-}
-
-static void meson_mmc_apply_phase_delay(struct meson_mmc_phase *mmc,
- unsigned int phase,
- unsigned int delay)
-{
- u32 val;
-
- val = readl(mmc->reg);
- val &= ~mmc->phase_mask;
- val |= phase << __ffs(mmc->phase_mask);
-
- if (mmc->delay_mask) {
- val &= ~mmc->delay_mask;
- val |= delay << __ffs(mmc->delay_mask);
- }
-
- writel(val, mmc->reg);
-}
-
-static int meson_mmc_clk_set_phase(struct clk_hw *hw, int degrees)
-{
- struct meson_mmc_phase *mmc = to_meson_mmc_phase(hw);
- unsigned int phase_num = 1 << hweight_long(mmc->phase_mask);
- unsigned long period_ps, d = 0, r;
- uint64_t p;
-
- p = degrees % 360;
-
- if (!mmc->delay_mask) {
- p = DIV_ROUND_CLOSEST_ULL(p, 360 / phase_num);
- } else {
- period_ps = DIV_ROUND_UP((unsigned long)NSEC_PER_SEC * 1000,
- clk_get_rate(hw->clk));
-
- /* First compute the phase index (p), the remainder (r) is the
- * part we'll try to acheive using the delays (d).
- */
- r = do_div(p, 360 / phase_num);
- d = DIV_ROUND_CLOSEST(r * period_ps,
- 360 * mmc->delay_step_ps);
- d = min(d, mmc->delay_mask >> __ffs(mmc->delay_mask));
- }
-
- meson_mmc_apply_phase_delay(mmc, p, d);
- return 0;
-}
-
-static const struct clk_ops meson_mmc_clk_phase_ops = {
- .get_phase = meson_mmc_clk_get_phase,
- .set_phase = meson_mmc_clk_set_phase,
-};
-
static unsigned int meson_mmc_get_timeout_msecs(struct mmc_data *data)
{
unsigned int timeout = data->timeout_ns / NSEC_PER_MSEC;
@@ -383,16 +298,6 @@ static void meson_mmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
mmc_get_dma_dir(data));
}
-static bool meson_mmc_timing_is_ddr(struct mmc_ios *ios)
-{
- if (ios->timing == MMC_TIMING_MMC_DDR52 ||
- ios->timing == MMC_TIMING_UHS_DDR50 ||
- ios->timing == MMC_TIMING_MMC_HS400)
- return true;
-
- return false;
-}
-
/*
* Gating the clock on this controller is tricky. It seems the mmc clock
* is also used by the controller. It may crash during some operation if the
@@ -429,36 +334,41 @@ static void meson_mmc_clk_ungate(struct meson_host *host)
writel(cfg, host->regs + SD_EMMC_CFG);
}
-static int meson_mmc_clk_set(struct meson_host *host, struct mmc_ios *ios)
+static int meson_mmc_clk_set(struct meson_host *host, unsigned long rate,
+ bool ddr)
{
struct mmc_host *mmc = host->mmc;
- unsigned long rate = ios->clock;
int ret;
u32 cfg;
- /* DDR modes require higher module clock */
- if (meson_mmc_timing_is_ddr(ios))
- rate <<= 1;
-
/* Same request - bail-out */
- if (host->req_rate == rate)
+ if (host->ddr == ddr && host->req_rate == rate)
return 0;
/* stop clock */
meson_mmc_clk_gate(host);
host->req_rate = 0;
+ mmc->actual_clock = 0;
- if (!rate) {
- mmc->actual_clock = 0;
- /* return with clock being stopped */
+ /* return with clock being stopped */
+ if (!rate)
return 0;
- }
/* Stop the clock during rate change to avoid glitches */
cfg = readl(host->regs + SD_EMMC_CFG);
cfg |= CFG_STOP_CLOCK;
writel(cfg, host->regs + SD_EMMC_CFG);
+ if (ddr) {
+ /* DDR modes require higher module clock */
+ rate <<= 1;
+ cfg |= CFG_DDR;
+ } else {
+ cfg &= ~CFG_DDR;
+ }
+ writel(cfg, host->regs + SD_EMMC_CFG);
+ host->ddr = ddr;
+
ret = clk_set_rate(host->mmc_clk, rate);
if (ret) {
dev_err(host->dev, "Unable to set cfg_div_clk to %lu. ret=%d\n",
@@ -470,12 +380,14 @@ static int meson_mmc_clk_set(struct meson_host *host, struct mmc_ios *ios)
mmc->actual_clock = clk_get_rate(host->mmc_clk);
/* We should report the real output frequency of the controller */
- if (meson_mmc_timing_is_ddr(ios))
+ if (ddr) {
+ host->req_rate >>= 1;
mmc->actual_clock >>= 1;
+ }
dev_dbg(host->dev, "clk rate: %u Hz\n", mmc->actual_clock);
- if (ios->clock != mmc->actual_clock)
- dev_dbg(host->dev, "requested rate was %u\n", ios->clock);
+ if (rate != mmc->actual_clock)
+ dev_dbg(host->dev, "requested rate was %lu\n", rate);
/* (re)start clock */
meson_mmc_clk_ungate(host);
@@ -493,8 +405,6 @@ static int meson_mmc_clk_init(struct meson_host *host)
struct clk_init_data init;
struct clk_mux *mux;
struct clk_divider *div;
- struct meson_mmc_phase *core, *tx, *rx;
- struct clk *clk;
char clk_name[32];
int i, ret = 0;
const char *mux_parent_names[MUX_CLK_NUM_PARENTS];
@@ -502,9 +412,11 @@ static int meson_mmc_clk_init(struct meson_host *host)
u32 clk_reg;
/* init SD_EMMC_CLOCK to sane defaults w/min clock rate */
- clk_reg = 0;
- clk_reg |= CLK_ALWAYS_ON(host);
+ clk_reg = CLK_ALWAYS_ON(host);
clk_reg |= CLK_DIV_MASK;
+ clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, CLK_PHASE_180);
+ clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, CLK_PHASE_0);
+ clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, CLK_PHASE_0);
writel(clk_reg, host->regs + SD_EMMC_CLOCK);
/* get the mux parents */
@@ -540,9 +452,9 @@ static int meson_mmc_clk_init(struct meson_host *host)
mux->mask = CLK_SRC_MASK >> mux->shift;
mux->hw.init = &init;
- clk = devm_clk_register(host->dev, &mux->hw);
- if (WARN_ON(IS_ERR(clk)))
- return PTR_ERR(clk);
+ host->mux_clk = devm_clk_register(host->dev, &mux->hw);
+ if (WARN_ON(IS_ERR(host->mux_clk)))
+ return PTR_ERR(host->mux_clk);
/* create the divider */
div = devm_kzalloc(host->dev, sizeof(*div), GFP_KERNEL);
@@ -553,7 +465,7 @@ static int meson_mmc_clk_init(struct meson_host *host)
init.name = clk_name;
init.ops = &clk_divider_ops;
init.flags = CLK_SET_RATE_PARENT;
- clk_parent[0] = __clk_get_name(clk);
+ clk_parent[0] = __clk_get_name(host->mux_clk);
init.parent_names = clk_parent;
init.num_parents = 1;
@@ -563,190 +475,104 @@ static int meson_mmc_clk_init(struct meson_host *host)
div->hw.init = &init;
div->flags = CLK_DIVIDER_ONE_BASED;
- clk = devm_clk_register(host->dev, &div->hw);
- if (WARN_ON(IS_ERR(clk)))
- return PTR_ERR(clk);
-
- /* create the mmc core clock */
- core = devm_kzalloc(host->dev, sizeof(*core), GFP_KERNEL);
- if (!core)
- return -ENOMEM;
-
- snprintf(clk_name, sizeof(clk_name), "%s#core", dev_name(host->dev));
- init.name = clk_name;
- init.ops = &meson_mmc_clk_phase_ops;
- init.flags = CLK_SET_RATE_PARENT;
- clk_parent[0] = __clk_get_name(clk);
- init.parent_names = clk_parent;
- init.num_parents = 1;
-
- core->reg = host->regs + SD_EMMC_CLOCK;
- core->phase_mask = CLK_CORE_PHASE_MASK;
- core->hw.init = &init;
-
- host->mmc_clk = devm_clk_register(host->dev, &core->hw);
- if (WARN_ON(PTR_ERR_OR_ZERO(host->mmc_clk)))
+ host->mmc_clk = devm_clk_register(host->dev, &div->hw);
+ if (WARN_ON(IS_ERR(host->mmc_clk)))
return PTR_ERR(host->mmc_clk);
- /* create the mmc tx clock */
- tx = devm_kzalloc(host->dev, sizeof(*tx), GFP_KERNEL);
- if (!tx)
- return -ENOMEM;
-
- snprintf(clk_name, sizeof(clk_name), "%s#tx", dev_name(host->dev));
- init.name = clk_name;
- init.ops = &meson_mmc_clk_phase_ops;
- init.flags = 0;
- clk_parent[0] = __clk_get_name(host->mmc_clk);
- init.parent_names = clk_parent;
- init.num_parents = 1;
-
- tx->reg = host->regs + SD_EMMC_CLOCK;
- tx->phase_mask = CLK_TX_PHASE_MASK;
- tx->delay_mask = CLK_TX_DELAY_MASK(host);
- tx->delay_step_ps = CLK_DELAY_STEP_PS;
- tx->hw.init = &init;
-
- host->tx_clk = devm_clk_register(host->dev, &tx->hw);
- if (WARN_ON(PTR_ERR_OR_ZERO(host->tx_clk)))
- return PTR_ERR(host->tx_clk);
-
- /* create the mmc rx clock */
- rx = devm_kzalloc(host->dev, sizeof(*rx), GFP_KERNEL);
- if (!rx)
- return -ENOMEM;
-
- snprintf(clk_name, sizeof(clk_name), "%s#rx", dev_name(host->dev));
- init.name = clk_name;
- init.ops = &meson_mmc_clk_phase_ops;
- init.flags = 0;
- clk_parent[0] = __clk_get_name(host->mmc_clk);
- init.parent_names = clk_parent;
- init.num_parents = 1;
-
- rx->reg = host->regs + SD_EMMC_CLOCK;
- rx->phase_mask = CLK_RX_PHASE_MASK;
- rx->delay_mask = CLK_RX_DELAY_MASK(host);
- rx->delay_step_ps = CLK_DELAY_STEP_PS;
- rx->hw.init = &init;
-
- host->rx_clk = devm_clk_register(host->dev, &rx->hw);
- if (WARN_ON(PTR_ERR_OR_ZERO(host->rx_clk)))
- return PTR_ERR(host->rx_clk);
-
/* init SD_EMMC_CLOCK to sane defaults w/min clock rate */
host->mmc->f_min = clk_round_rate(host->mmc_clk, 400000);
ret = clk_set_rate(host->mmc_clk, host->mmc->f_min);
if (ret)
return ret;
- clk_set_phase(host->mmc_clk, 180);
- clk_set_phase(host->tx_clk, 0);
- clk_set_phase(host->rx_clk, 0);
-
return clk_prepare_enable(host->mmc_clk);
}
-static void meson_mmc_shift_map(unsigned long *map, unsigned long shift)
+static void meson_mmc_disable_resampling(struct meson_host *host)
{
- DECLARE_BITMAP(left, CLK_PHASE_POINT_NUM);
- DECLARE_BITMAP(right, CLK_PHASE_POINT_NUM);
+ unsigned int val = readl(host->regs + host->data->adjust);
- /*
- * shift the bitmap right and reintroduce the dropped bits on the left
- * of the bitmap
- */
- bitmap_shift_right(right, map, shift, CLK_PHASE_POINT_NUM);
- bitmap_shift_left(left, map, CLK_PHASE_POINT_NUM - shift,
- CLK_PHASE_POINT_NUM);
- bitmap_or(map, left, right, CLK_PHASE_POINT_NUM);
+ val &= ~ADJUST_ADJ_EN;
+ writel(val, host->regs + host->data->adjust);
}
-static void meson_mmc_find_next_region(unsigned long *map,
- unsigned long *start,
- unsigned long *stop)
+static void meson_mmc_reset_resampling(struct meson_host *host)
{
- *start = find_next_bit(map, CLK_PHASE_POINT_NUM, *start);
- *stop = find_next_zero_bit(map, CLK_PHASE_POINT_NUM, *start);
+ unsigned int val;
+
+ meson_mmc_disable_resampling(host);
+
+ val = readl(host->regs + host->data->adjust);
+ val &= ~ADJUST_ADJ_DELAY_MASK;
+ writel(val, host->regs + host->data->adjust);
}
-static int meson_mmc_find_tuning_point(unsigned long *test)
+static int meson_mmc_resampling_tuning(struct mmc_host *mmc, u32 opcode)
{
- unsigned long shift, stop, offset = 0, start = 0, size = 0;
+ struct meson_host *host = mmc_priv(mmc);
+ unsigned int val, dly, max_dly, i;
+ int ret;
- /* Get the all good/all bad situation out the way */
- if (bitmap_full(test, CLK_PHASE_POINT_NUM))
- return 0; /* All points are good so point 0 will do */
- else if (bitmap_empty(test, CLK_PHASE_POINT_NUM))
- return -EIO; /* No successful tuning point */
+ /* Resampling is done using the source clock */
+ max_dly = DIV_ROUND_UP(clk_get_rate(host->mux_clk),
+ clk_get_rate(host->mmc_clk));
- /*
- * Now we know there is a least one region find. Make sure it does
- * not wrap by the shifting the bitmap if necessary
- */
- shift = find_first_zero_bit(test, CLK_PHASE_POINT_NUM);
- if (shift != 0)
- meson_mmc_shift_map(test, shift);
+ val = readl(host->regs + host->data->adjust);
+ val |= ADJUST_ADJ_EN;
+ writel(val, host->regs + host->data->adjust);
- while (start < CLK_PHASE_POINT_NUM) {
- meson_mmc_find_next_region(test, &start, &stop);
+ if (mmc->doing_retune)
+ dly = FIELD_GET(ADJUST_ADJ_DELAY_MASK, val) + 1;
+ else
+ dly = 0;
- if ((stop - start) > size) {
- offset = start;
- size = stop - start;
- }
+ for (i = 0; i < max_dly; i++) {
+ val &= ~ADJUST_ADJ_DELAY_MASK;
+ val |= FIELD_PREP(ADJUST_ADJ_DELAY_MASK, (dly + i) % max_dly);
+ writel(val, host->regs + host->data->adjust);
- start = stop;
+ ret = mmc_send_tuning(mmc, opcode, NULL);
+ if (!ret) {
+ dev_dbg(mmc_dev(mmc), "resampling delay: %u\n",
+ (dly + i) % max_dly);
+ return 0;
+ }
}
- /* Get the center point of the region */
- offset += (size / 2);
-
- /* Shift the result back */
- offset = (offset + shift) % CLK_PHASE_POINT_NUM;
-
- return offset;
+ meson_mmc_reset_resampling(host);
+ return -EIO;
}
-static int meson_mmc_clk_phase_tuning(struct mmc_host *mmc, u32 opcode,
- struct clk *clk)
+static int meson_mmc_prepare_ios_clock(struct meson_host *host,
+ struct mmc_ios *ios)
{
- int point, ret;
- DECLARE_BITMAP(test, CLK_PHASE_POINT_NUM);
+ bool ddr;
- dev_dbg(mmc_dev(mmc), "%s phase/delay tunning...\n",
- __clk_get_name(clk));
- bitmap_zero(test, CLK_PHASE_POINT_NUM);
+ switch (ios->timing) {
+ case MMC_TIMING_MMC_DDR52:
+ case MMC_TIMING_UHS_DDR50:
+ ddr = true;
+ break;
- /* Explore tuning points */
- for (point = 0; point < CLK_PHASE_POINT_NUM; point++) {
- clk_set_phase(clk, point * CLK_PHASE_STEP);
- ret = mmc_send_tuning(mmc, opcode, NULL);
- if (!ret)
- set_bit(point, test);
+ default:
+ ddr = false;
+ break;
}
- /* Find the optimal tuning point and apply it */
- point = meson_mmc_find_tuning_point(test);
- if (point < 0)
- return point; /* tuning failed */
-
- clk_set_phase(clk, point * CLK_PHASE_STEP);
- dev_dbg(mmc_dev(mmc), "success with phase: %d\n",
- clk_get_phase(clk));
- return 0;
+ return meson_mmc_clk_set(host, ios->clock, ddr);
}
-static int meson_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
+static void meson_mmc_check_resampling(struct meson_host *host,
+ struct mmc_ios *ios)
{
- struct meson_host *host = mmc_priv(mmc);
- int adj = 0;
-
- /* enable signal resampling w/o delay */
- adj = ADJUST_ADJ_EN;
- writel(adj, host->regs + host->data->adjust);
-
- return meson_mmc_clk_phase_tuning(mmc, opcode, host->rx_clk);
+ switch (ios->timing) {
+ case MMC_TIMING_LEGACY:
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_SD_HS:
+ case MMC_TIMING_MMC_DDR52:
+ meson_mmc_disable_resampling(host);
+ break;
+ }
}
static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
@@ -775,12 +601,6 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vmmc))
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
- /* disable signal resampling */
- writel(0, host->regs + host->data->adjust);
-
- /* Reset rx phase */
- clk_set_phase(host->rx_clk, 0);
-
break;
case MMC_POWER_ON:
@@ -817,20 +637,13 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
val = readl(host->regs + SD_EMMC_CFG);
val &= ~CFG_BUS_WIDTH_MASK;
val |= FIELD_PREP(CFG_BUS_WIDTH_MASK, bus_width);
+ writel(val, host->regs + SD_EMMC_CFG);
- val &= ~CFG_DDR;
- if (meson_mmc_timing_is_ddr(ios))
- val |= CFG_DDR;
-
- val &= ~CFG_CHK_DS;
- if (ios->timing == MMC_TIMING_MMC_HS400)
- val |= CFG_CHK_DS;
-
- err = meson_mmc_clk_set(host, ios);
+ meson_mmc_check_resampling(host, ios);
+ err = meson_mmc_prepare_ios_clock(host, ios);
if (err)
dev_err(host->dev, "Failed to set clock: %d\n,", err);
- writel(val, host->regs + SD_EMMC_CFG);
dev_dbg(host->dev, "SD_EMMC_CFG: 0x%08x\n", val);
}
@@ -1081,9 +894,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
}
out:
- /* ack all enabled interrupts */
- writel(irq_en, host->regs + SD_EMMC_STATUS);
-
if (cmd->error) {
/* Stop desc in case of errors */
u32 start = readl(host->regs + SD_EMMC_START);
@@ -1095,12 +905,14 @@ out:
if (ret == IRQ_HANDLED)
meson_mmc_request_done(host->mmc, cmd->mrq);
+ /* ack all raised interrupts */
+ writel(status, host->regs + SD_EMMC_STATUS);
+
return ret;
}
static int meson_mmc_wait_desc_stop(struct meson_host *host)
{
- int loop;
u32 status;
/*
@@ -1110,20 +922,10 @@ static int meson_mmc_wait_desc_stop(struct meson_host *host)
* If we don't confirm the descriptor is stopped, it might raise new
* IRQs after we have called mmc_request_done() which is bad.
*/
- for (loop = 50; loop; loop--) {
- status = readl(host->regs + SD_EMMC_STATUS);
- if (status & (STATUS_BUSY | STATUS_DESC_BUSY))
- udelay(100);
- else
- break;
- }
-
- if (status & (STATUS_BUSY | STATUS_DESC_BUSY)) {
- dev_err(host->dev, "Timed out waiting for host to stop\n");
- return -ETIMEDOUT;
- }
- return 0;
+ return readl_poll_timeout(host->regs + SD_EMMC_STATUS, status,
+ !(status & (STATUS_BUSY | STATUS_DESC_BUSY)),
+ 100, 5000);
}
static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id)
@@ -1227,7 +1029,7 @@ static const struct mmc_host_ops meson_mmc_ops = {
.get_cd = meson_mmc_get_cd,
.pre_req = meson_mmc_pre_req,
.post_req = meson_mmc_post_req,
- .execute_tuning = meson_mmc_execute_tuning,
+ .execute_tuning = meson_mmc_resampling_tuning,
.card_busy = meson_mmc_card_busy,
.start_signal_voltage_switch = meson_mmc_voltage_switch,
};
@@ -1338,7 +1140,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
host->regs + SD_EMMC_IRQ_EN);
ret = request_threaded_irq(host->irq, meson_mmc_irq,
- meson_mmc_irq_thread, IRQF_SHARED,
+ meson_mmc_irq_thread, IRQF_ONESHOT,
dev_name(&pdev->dev), host);
if (ret)
goto err_init_clk;
@@ -1349,6 +1151,13 @@ static int meson_mmc_probe(struct platform_device *pdev)
mmc->max_segs = SD_EMMC_DESC_BUF_LEN / sizeof(struct sd_emmc_desc);
mmc->max_seg_size = mmc->max_req_size;
+ /*
+ * At the moment, we don't know how to reliably enable HS400.
+ * From the different datasheets, it is not even clear if this mode
+ * is officially supported by any of the SoCs
+ */
+ mmc->caps2 &= ~MMC_CAP2_HS400;
+
/* data bounce buffer */
host->bounce_buf_size = mmc->max_req_size;
host->bounce_buf =
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 1b1498805972..19544b121276 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
- * mmc_spi.c - Access SD/MMC cards through SPI master controllers
+ * Access SD/MMC cards through SPI master controllers
*
* (C) Copyright 2005, Intec Automation,
* Mike Lavender (mike@steroidmicros)
@@ -8,21 +9,6 @@
* Hans-Peter Nilsson (hp@axis.com)
* (C) Copyright 2007, ATRON electronic GmbH,
* Jan Nikitenko <jan.nikitenko@gmail.com>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/sched.h>
#include <linux/delay.h>
@@ -197,7 +183,7 @@ mmc_spi_readbytes(struct mmc_spi_host *host, unsigned len)
static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,
unsigned n, u8 byte)
{
- u8 *cp = host->data->status;
+ u8 *cp = host->data->status;
unsigned long start = jiffies;
while (1) {
@@ -220,7 +206,7 @@ static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,
* We use jiffies here because we want to have a relation
* between elapsed time and the blocking of the scheduler.
*/
- if (time_is_before_jiffies(start+1))
+ if (time_is_before_jiffies(start + 1))
schedule();
}
return -ETIMEDOUT;
@@ -415,7 +401,7 @@ checkstatus:
default:
dev_dbg(&host->spi->dev, "bad response type %04x\n",
- mmc_spi_resp_type(cmd));
+ mmc_spi_resp_type(cmd));
if (value >= 0)
value = -EINVAL;
goto done;
@@ -467,8 +453,8 @@ mmc_spi_command_send(struct mmc_spi_host *host,
memset(cp, 0xff, sizeof(data->status));
cp[1] = 0x40 | cmd->opcode;
- put_unaligned_be32(cmd->arg, cp+2);
- cp[6] = crc7_be(0, cp+1, 5) | 0x01;
+ put_unaligned_be32(cmd->arg, cp + 2);
+ cp[6] = crc7_be(0, cp + 1, 5) | 0x01;
cp += 7;
/* Then, read up to 13 bytes (while writing all-ones):
@@ -642,9 +628,7 @@ mmc_spi_setup_data_message(
if (multiple || direction == DMA_TO_DEVICE) {
t = &host->early_status;
memset(t, 0, sizeof(*t));
- t->len = (direction == DMA_TO_DEVICE)
- ? sizeof(scratch->status)
- : 1;
+ t->len = (direction == DMA_TO_DEVICE) ? sizeof(scratch->status) : 1;
t->tx_buf = host->ones;
t->tx_dma = host->ones_dma;
t->rx_buf = scratch->status;
@@ -677,8 +661,7 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
u32 pattern;
if (host->mmc->use_spi_crc)
- scratch->crc_val = cpu_to_be16(
- crc_itu_t(0, t->tx_buf, t->len));
+ scratch->crc_val = cpu_to_be16(crc_itu_t(0, t->tx_buf, t->len));
if (host->dma_dev)
dma_sync_single_for_device(host->dma_dev,
host->data_dma, sizeof(*scratch),
@@ -819,6 +802,10 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
}
status = spi_sync_locked(spi, &host->m);
+ if (status < 0) {
+ dev_dbg(&spi->dev, "read error %d\n", status);
+ return status;
+ }
if (host->dma_dev) {
dma_sync_single_for_cpu(host->dma_dev,
@@ -855,9 +842,9 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
be16_to_cpus(&scratch->crc_val);
if (scratch->crc_val != crc) {
- dev_dbg(&spi->dev, "read - crc error: crc_val=0x%04x, "
- "computed=0x%04x len=%d\n",
- scratch->crc_val, crc, t->len);
+ dev_dbg(&spi->dev,
+ "read - crc error: crc_val=0x%04x, computed=0x%04x len=%d\n",
+ scratch->crc_val, crc, t->len);
return -EILSEQ;
}
}
@@ -945,9 +932,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
dev_dbg(&host->spi->dev,
" mmc_spi: %s block, %d bytes\n",
- (direction == DMA_TO_DEVICE)
- ? "write"
- : "read",
+ (direction == DMA_TO_DEVICE) ? "write" : "read",
t->len);
if (direction == DMA_TO_DEVICE)
@@ -974,8 +959,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
if (status < 0) {
data->error = status;
dev_dbg(&spi->dev, "%s status %d\n",
- (direction == DMA_TO_DEVICE)
- ? "write" : "read",
+ (direction == DMA_TO_DEVICE) ? "write" : "read",
status);
break;
}
@@ -1249,8 +1233,7 @@ static void mmc_spi_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
mres = spi_setup(host->spi);
if (mres < 0)
dev_dbg(&host->spi->dev,
- "switch back to SPI mode 3"
- " failed\n");
+ "switch back to SPI mode 3 failed\n");
}
}
@@ -1470,7 +1453,7 @@ static int mmc_spi_probe(struct spi_device *spi)
return 0;
fail_add_host:
- mmc_remove_host (mmc);
+ mmc_remove_host(mmc);
fail_glue_init:
if (host->dma_dev)
dma_unmap_single(host->dma_dev, host->data_dma,
@@ -1485,7 +1468,6 @@ fail_ones_dma:
fail_nobuf1:
mmc_free_host(mmc);
mmc_spi_put_pdata(spi);
- dev_set_drvdata(&spi->dev, NULL);
nomem:
kfree(ones);
@@ -1496,32 +1478,27 @@ nomem:
static int mmc_spi_remove(struct spi_device *spi)
{
struct mmc_host *mmc = dev_get_drvdata(&spi->dev);
- struct mmc_spi_host *host;
-
- if (mmc) {
- host = mmc_priv(mmc);
+ struct mmc_spi_host *host = mmc_priv(mmc);
- /* prevent new mmc_detect_change() calls */
- if (host->pdata && host->pdata->exit)
- host->pdata->exit(&spi->dev, mmc);
+ /* prevent new mmc_detect_change() calls */
+ if (host->pdata && host->pdata->exit)
+ host->pdata->exit(&spi->dev, mmc);
- mmc_remove_host(mmc);
+ mmc_remove_host(mmc);
- if (host->dma_dev) {
- dma_unmap_single(host->dma_dev, host->ones_dma,
- MMC_SPI_BLOCKSIZE, DMA_TO_DEVICE);
- dma_unmap_single(host->dma_dev, host->data_dma,
- sizeof(*host->data), DMA_BIDIRECTIONAL);
- }
+ if (host->dma_dev) {
+ dma_unmap_single(host->dma_dev, host->ones_dma,
+ MMC_SPI_BLOCKSIZE, DMA_TO_DEVICE);
+ dma_unmap_single(host->dma_dev, host->data_dma,
+ sizeof(*host->data), DMA_BIDIRECTIONAL);
+ }
- kfree(host->data);
- kfree(host->ones);
+ kfree(host->data);
+ kfree(host->ones);
- spi->max_speed_hz = mmc->f_max;
- mmc_free_host(mmc);
- mmc_spi_put_pdata(spi);
- dev_set_drvdata(&spi->dev, NULL);
- }
+ spi->max_speed_hz = mmc->f_max;
+ mmc_free_host(mmc);
+ mmc_spi_put_pdata(spi);
return 0;
}
@@ -1542,8 +1519,7 @@ static struct spi_driver mmc_spi_driver = {
module_spi_driver(mmc_spi_driver);
-MODULE_AUTHOR("Mike Lavender, David Brownell, "
- "Hans-Peter Nilsson, Jan Nikitenko");
+MODULE_AUTHOR("Mike Lavender, David Brownell, Hans-Peter Nilsson, Jan Nikitenko");
MODULE_DESCRIPTION("SPI SD/MMC host driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("spi:mmc_spi");
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 387ff14587b8..356833a606d5 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -43,21 +43,11 @@
#include <asm/io.h>
#include "mmci.h"
-#include "mmci_qcom_dml.h"
#define DRIVER_NAME "mmci-pl18x"
-#ifdef CONFIG_DMA_ENGINE
-void mmci_variant_init(struct mmci_host *host);
-#else
-static inline void mmci_variant_init(struct mmci_host *host) {}
-#endif
-
-#ifdef CONFIG_MMC_STM32_SDMMC
-void sdmmc_variant_init(struct mmci_host *host);
-#else
-static inline void sdmmc_variant_init(struct mmci_host *host) {}
-#endif
+static void mmci_variant_init(struct mmci_host *host);
+static void ux500v2_variant_init(struct mmci_host *host);
static unsigned int fmax = 515633;
@@ -70,7 +60,6 @@ static struct variant_data variant_arm = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.reversed_irq_handling = true,
@@ -90,7 +79,6 @@ static struct variant_data variant_arm_extended_fifo = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.mmcimask1 = true,
@@ -110,7 +98,6 @@ static struct variant_data variant_arm_extended_fifo_hwfc = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.mmcimask1 = true,
@@ -131,7 +118,6 @@ static struct variant_data variant_u300 = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.pwrreg_powerup = MCI_PWR_ON,
@@ -157,7 +143,6 @@ static struct variant_data variant_nomadik = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 24,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -186,7 +171,6 @@ static struct variant_data variant_ux500 = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 24,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -220,11 +204,9 @@ static struct variant_data variant_ux500v2 = {
.datactrl_mask_ddrmode = MCI_DPSM_ST_DDRMODE,
.datalength_bits = 24,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
- .blksz_datactrl16 = true,
.pwrreg_powerup = MCI_PWR_ON,
.f_max = 100000000,
.signal_direction = true,
@@ -238,7 +220,7 @@ static struct variant_data variant_ux500v2 = {
.irq_pio_mask = MCI_IRQ_PIO_MASK,
.start_err = MCI_STARTBITERR,
.opendrain = MCI_OD,
- .init = mmci_variant_init,
+ .init = ux500v2_variant_init,
};
static struct variant_data variant_stm32 = {
@@ -255,7 +237,6 @@ static struct variant_data variant_stm32 = {
.irq_pio_mask = MCI_IRQ_PIO_MASK,
.datalength_bits = 24,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -299,10 +280,8 @@ static struct variant_data variant_qcom = {
.cmdreg_srsp_crc = MCI_CPSM_RESPONSE,
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.data_cmd_enable = MCI_CPSM_QCOM_DATCMD,
- .blksz_datactrl4 = true,
.datalength_bits = 24,
.datactrl_blocksz = 11,
- .datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 208000000,
.explicit_mclk_control = true,
@@ -624,6 +603,16 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
}
+static u32 mmci_get_dctrl_cfg(struct mmci_host *host)
+{
+ return MCI_DPSM_ENABLE | mmci_dctrl_blksz(host);
+}
+
+static u32 ux500v2_get_dctrl_cfg(struct mmci_host *host)
+{
+ return MCI_DPSM_ENABLE | (host->data->blksz << 16);
+}
+
/*
* All the DMA operation mode stuff goes inside this ifdef.
* This assumes that you have a generic DMA device interface,
@@ -886,15 +875,11 @@ int mmci_dmae_prep_data(struct mmci_host *host,
int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl)
{
struct mmci_dmae_priv *dmae = host->dma_priv;
- struct mmc_data *data = host->data;
host->dma_in_progress = true;
dmaengine_submit(dmae->desc_current);
dma_async_issue_pending(dmae->cur);
- if (host->variant->qcom_dml)
- dml_start_xfer(host, data);
-
*datactrl |= MCI_DPSM_DMAENABLE;
return 0;
@@ -952,6 +937,7 @@ void mmci_dmae_unprep_data(struct mmci_host *host,
static struct mmci_host_ops mmci_variant_ops = {
.prep_data = mmci_dmae_prep_data,
.unprep_data = mmci_dmae_unprep_data,
+ .get_datactrl_cfg = mmci_get_dctrl_cfg,
.get_next_data = mmci_dmae_get_next_data,
.dma_setup = mmci_dmae_setup,
.dma_release = mmci_dmae_release,
@@ -959,12 +945,22 @@ static struct mmci_host_ops mmci_variant_ops = {
.dma_finalize = mmci_dmae_finalize,
.dma_error = mmci_dmae_error,
};
+#else
+static struct mmci_host_ops mmci_variant_ops = {
+ .get_datactrl_cfg = mmci_get_dctrl_cfg,
+};
+#endif
void mmci_variant_init(struct mmci_host *host)
{
host->ops = &mmci_variant_ops;
}
-#endif
+
+void ux500v2_variant_init(struct mmci_host *host)
+{
+ host->ops = &mmci_variant_ops;
+ host->ops->get_datactrl_cfg = ux500v2_get_dctrl_cfg;
+}
static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
@@ -1000,7 +996,6 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
unsigned int datactrl, timeout, irqmask;
unsigned long long clks;
void __iomem *base;
- int blksz_bits;
dev_dbg(mmc_dev(host->mmc), "blksz %04x blks %04x flags %08x\n",
data->blksz, data->blocks, data->flags);
@@ -1018,18 +1013,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
writel(timeout, base + MMCIDATATIMER);
writel(host->size, base + MMCIDATALENGTH);
- blksz_bits = ffs(data->blksz) - 1;
- BUG_ON(1 << blksz_bits != data->blksz);
-
- if (variant->blksz_datactrl16)
- datactrl = variant->datactrl_dpsm_enable | (data->blksz << 16);
- else if (variant->blksz_datactrl4)
- datactrl = variant->datactrl_dpsm_enable | (data->blksz << 4);
- else
- datactrl = variant->datactrl_dpsm_enable | blksz_bits << 4;
-
- if (data->flags & MMC_DATA_READ)
- datactrl |= MCI_DPSM_DIRECTION;
+ datactrl = host->ops->get_datactrl_cfg(host);
+ datactrl |= host->data->flags & MMC_DATA_READ ? MCI_DPSM_DIRECTION : 0;
if (host->mmc->card && mmc_card_sdio(host->mmc->card)) {
u32 clk;
@@ -1220,12 +1205,13 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
unsigned int status)
{
void __iomem *base = host->base;
- bool sbc;
+ bool sbc, busy_resp;
if (!cmd)
return;
sbc = (cmd == host->mrq->sbc);
+ busy_resp = !!(cmd->flags & MMC_RSP_BUSY);
/*
* We need to be one of these interrupts to be considered worth
@@ -1239,8 +1225,7 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
/*
* ST Micro variant: handle busy detection.
*/
- if (host->variant->busy_detect) {
- bool busy_resp = !!(cmd->flags & MMC_RSP_BUSY);
+ if (busy_resp && host->variant->busy_detect) {
/* We are busy with a command, return */
if (host->busy_status &&
@@ -1253,7 +1238,7 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
* that the special busy status bit is still set before
* proceeding.
*/
- if (!host->busy_status && busy_resp &&
+ if (!host->busy_status &&
!(status & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT)) &&
(readl(base + MMCISTATUS) & host->variant->busy_detect_flag)) {
@@ -1550,9 +1535,10 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
}
/*
- * Don't poll for busy completion in irq context.
+ * Busy detection has been handled by mmci_cmd_irq() above.
+ * Clear the status bit to prevent polling in IRQ context.
*/
- if (host->variant->busy_detect && host->busy_status)
+ if (host->variant->busy_detect_flag)
status &= ~host->variant->busy_detect_flag;
ret = 1;
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 14df81054438..4f071bd34e59 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -131,6 +131,11 @@
/* Control register extensions in the Qualcomm versions */
#define MCI_DPSM_QCOM_DATA_PEND BIT(17)
#define MCI_DPSM_QCOM_RX_DATA_PEND BIT(20)
+/* Control register extensions in STM32 versions */
+#define MCI_DPSM_STM32_MODE_BLOCK (0 << 2)
+#define MCI_DPSM_STM32_MODE_SDIO (1 << 2)
+#define MCI_DPSM_STM32_MODE_STREAM (2 << 2)
+#define MCI_DPSM_STM32_MODE_BLOCK_STOP (3 << 2)
#define MMCIDATACNT 0x030
#define MMCISTATUS 0x034
@@ -275,12 +280,8 @@ struct mmci_host;
* @st_clkdiv: true if using a ST-specific clock divider algorithm
* @stm32_clkdiv: true if using a STM32-specific clock divider algorithm
* @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
- * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
- * @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl
- * register
* @datactrl_mask_sdio: SDIO enable mask in datactrl register
* @datactrl_blksz: block size in power of two
- * @datactrl_dpsm_enable: enable value for DPSM
* @datactrl_first: true if data must be setup before send command
* @datacnt_useless: true if you could not use datacnt register to read
* remaining data
@@ -325,14 +326,11 @@ struct variant_data {
unsigned int datactrl_mask_ddrmode;
unsigned int datactrl_mask_sdio;
unsigned int datactrl_blocksz;
- unsigned int datactrl_dpsm_enable;
u8 datactrl_first:1;
u8 datacnt_useless:1;
u8 st_sdio:1;
u8 st_clkdiv:1;
u8 stm32_clkdiv:1;
- u8 blksz_datactrl16:1;
- u8 blksz_datactrl4:1;
u32 pwrreg_powerup;
u32 f_max;
u8 signal_direction:1;
@@ -362,6 +360,7 @@ struct mmci_host_ops {
bool next);
void (*unprep_data)(struct mmci_host *host, struct mmc_data *data,
int err);
+ u32 (*get_datactrl_cfg)(struct mmci_host *host);
void (*get_next_data)(struct mmci_host *host, struct mmc_data *data);
int (*dma_setup)(struct mmci_host *host);
void (*dma_release)(struct mmci_host *host);
@@ -429,6 +428,12 @@ struct mmci_host {
void mmci_write_clkreg(struct mmci_host *host, u32 clk);
void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);
+static inline u32 mmci_dctrl_blksz(struct mmci_host *host)
+{
+ return (ffs(host->data->blksz) - 1) << 4;
+}
+
+#ifdef CONFIG_DMA_ENGINE
int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data,
bool next);
void mmci_dmae_unprep_data(struct mmci_host *host, struct mmc_data *data,
@@ -439,3 +444,16 @@ void mmci_dmae_release(struct mmci_host *host);
int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl);
void mmci_dmae_finalize(struct mmci_host *host, struct mmc_data *data);
void mmci_dmae_error(struct mmci_host *host);
+#endif
+
+#ifdef CONFIG_MMC_QCOM_DML
+void qcom_variant_init(struct mmci_host *host);
+#else
+static inline void qcom_variant_init(struct mmci_host *host) {}
+#endif
+
+#ifdef CONFIG_MMC_STM32_SDMMC
+void sdmmc_variant_init(struct mmci_host *host);
+#else
+static inline void sdmmc_variant_init(struct mmci_host *host) {}
+#endif
diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_dml.c
index 25d0a75533ea..3af396b3e0a0 100644
--- a/drivers/mmc/host/mmci_qcom_dml.c
+++ b/drivers/mmc/host/mmci_qcom_dml.c
@@ -54,10 +54,15 @@
#define DML_OFFSET 0x800
-void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
+static int qcom_dma_start(struct mmci_host *host, unsigned int *datactrl)
{
u32 config;
void __iomem *base = host->base + DML_OFFSET;
+ struct mmc_data *data = host->data;
+ int ret = mmci_dmae_start(host, datactrl);
+
+ if (ret)
+ return ret;
if (data->flags & MMC_DATA_READ) {
/* Read operation: configure DML for producer operation */
@@ -96,6 +101,7 @@ void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
/* make sure the dml is configured before dma is triggered */
wmb();
+ return 0;
}
static int of_get_dml_pipe_index(struct device_node *np, const char *name)
@@ -133,7 +139,6 @@ static int qcom_dma_setup(struct mmci_host *host)
producer_id = of_get_dml_pipe_index(np, "rx");
if (producer_id < 0 || consumer_id < 0) {
- host->variant->qcom_dml = false;
mmci_dmae_release(host);
return -EINVAL;
}
@@ -183,13 +188,19 @@ static int qcom_dma_setup(struct mmci_host *host)
return 0;
}
+static u32 qcom_get_dctrl_cfg(struct mmci_host *host)
+{
+ return MCI_DPSM_ENABLE | (host->data->blksz << 4);
+}
+
static struct mmci_host_ops qcom_variant_ops = {
.prep_data = mmci_dmae_prep_data,
.unprep_data = mmci_dmae_unprep_data,
+ .get_datactrl_cfg = qcom_get_dctrl_cfg,
.get_next_data = mmci_dmae_get_next_data,
.dma_setup = qcom_dma_setup,
.dma_release = mmci_dmae_release,
- .dma_start = mmci_dmae_start,
+ .dma_start = qcom_dma_start,
.dma_finalize = mmci_dmae_finalize,
.dma_error = mmci_dmae_error,
};
diff --git a/drivers/mmc/host/mmci_qcom_dml.h b/drivers/mmc/host/mmci_qcom_dml.h
deleted file mode 100644
index fa16f6f4d4ad..000000000000
--- a/drivers/mmc/host/mmci_qcom_dml.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- *
- * Copyright (c) 2011, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-#ifndef __MMC_QCOM_DML_H__
-#define __MMC_QCOM_DML_H__
-
-#ifdef CONFIG_MMC_QCOM_DML
-void qcom_variant_init(struct mmci_host *host);
-void dml_start_xfer(struct mmci_host *host, struct mmc_data *data);
-#else
-static inline void qcom_variant_init(struct mmci_host *host)
-{
-}
-static inline void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
-{
-}
-#endif /* CONFIG_MMC_QCOM_DML */
-
-#endif /* __MMC_QCOM_DML_H__ */
diff --git a/drivers/mmc/host/mmci_stm32_sdmmc.c b/drivers/mmc/host/mmci_stm32_sdmmc.c
index cfbfc6f1048f..8e83ae6920ae 100644
--- a/drivers/mmc/host/mmci_stm32_sdmmc.c
+++ b/drivers/mmc/host/mmci_stm32_sdmmc.c
@@ -265,10 +265,28 @@ static void mmci_sdmmc_set_pwrreg(struct mmci_host *host, unsigned int pwr)
}
}
+static u32 sdmmc_get_dctrl_cfg(struct mmci_host *host)
+{
+ u32 datactrl;
+
+ datactrl = mmci_dctrl_blksz(host);
+
+ if (host->mmc->card && mmc_card_sdio(host->mmc->card) &&
+ host->data->blocks == 1)
+ datactrl |= MCI_DPSM_STM32_MODE_SDIO;
+ else if (host->data->stop && !host->mrq->sbc)
+ datactrl |= MCI_DPSM_STM32_MODE_BLOCK_STOP;
+ else
+ datactrl |= MCI_DPSM_STM32_MODE_BLOCK;
+
+ return datactrl;
+}
+
static struct mmci_host_ops sdmmc_variant_ops = {
.validate_data = sdmmc_idma_validate_data,
.prep_data = sdmmc_idma_prep_data,
.unprep_data = sdmmc_idma_unprep_data,
+ .get_datactrl_cfg = sdmmc_get_dctrl_cfg,
.dma_setup = sdmmc_idma_setup,
.dma_start = sdmmc_idma_start,
.dma_finalize = sdmmc_idma_finalize,
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 833ef0590af8..c518cc208a1f 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -300,6 +300,8 @@
#define CMD_TIMEOUT (HZ/10 * 5) /* 100ms x5 */
#define DAT_TIMEOUT (HZ * 5) /* 1000ms x5 */
+#define DEFAULT_DEBOUNCE (8) /* 8 cycles CD debounce */
+
#define PAD_DELAY_MAX 32 /* PAD delay cells */
/*--------------------------------------------------------------------------*/
/* Descriptor Structure */
@@ -372,6 +374,7 @@ struct mtk_mmc_compatible {
bool stop_clk_fix;
bool enhance_rx;
bool support_64g;
+ bool use_internal_cd;
};
struct msdc_tune_para {
@@ -430,6 +433,7 @@ struct msdc_host {
bool hs400_cmd_resp_sel_rising;
/* cmd response sample selection for HS400 */
bool hs400_mode; /* current eMMC will run at hs400 mode */
+ bool internal_cd; /* Use internal card-detect logic */
struct msdc_save_para save_para; /* used when gate HCLK */
struct msdc_tune_para def_tune_para; /* default tune setting */
struct msdc_tune_para saved_tune_para; /* tune result of CMD21/CMD19 */
@@ -507,6 +511,28 @@ static const struct mtk_mmc_compatible mt7622_compat = {
.support_64g = false,
};
+static const struct mtk_mmc_compatible mt8516_compat = {
+ .clk_div_bits = 12,
+ .hs400_tune = false,
+ .pad_tune_reg = MSDC_PAD_TUNE0,
+ .async_fifo = true,
+ .data_tune = true,
+ .busy_check = true,
+ .stop_clk_fix = true,
+};
+
+static const struct mtk_mmc_compatible mt7620_compat = {
+ .clk_div_bits = 8,
+ .hs400_tune = false,
+ .pad_tune_reg = MSDC_PAD_TUNE,
+ .async_fifo = false,
+ .data_tune = false,
+ .busy_check = false,
+ .stop_clk_fix = false,
+ .enhance_rx = false,
+ .use_internal_cd = true,
+};
+
static const struct of_device_id msdc_of_ids[] = {
{ .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat},
{ .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat},
@@ -514,6 +540,8 @@ static const struct of_device_id msdc_of_ids[] = {
{ .compatible = "mediatek,mt2701-mmc", .data = &mt2701_compat},
{ .compatible = "mediatek,mt2712-mmc", .data = &mt2712_compat},
{ .compatible = "mediatek,mt7622-mmc", .data = &mt7622_compat},
+ { .compatible = "mediatek,mt8516-mmc", .data = &mt8516_compat},
+ { .compatible = "mediatek,mt7620-mmc", .data = &mt7620_compat},
{}
};
MODULE_DEVICE_TABLE(of, msdc_of_ids);
@@ -1407,6 +1435,12 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
sdio_signal_irq(host->mmc);
}
+ if ((events & event_mask) & MSDC_INT_CDSC) {
+ if (host->internal_cd)
+ mmc_detect_change(host->mmc, msecs_to_jiffies(20));
+ events &= ~MSDC_INT_CDSC;
+ }
+
if (!(events & (event_mask & ~MSDC_INT_SDIOIRQ)))
break;
@@ -1440,14 +1474,24 @@ static void msdc_init_hw(struct msdc_host *host)
/* Reset */
msdc_reset_hw(host);
- /* Disable card detection */
- sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
-
/* Disable and clear all interrupts */
writel(0, host->base + MSDC_INTEN);
val = readl(host->base + MSDC_INT);
writel(val, host->base + MSDC_INT);
+ /* Configure card detection */
+ if (host->internal_cd) {
+ sdr_set_field(host->base + MSDC_PS, MSDC_PS_CDDEBOUNCE,
+ DEFAULT_DEBOUNCE);
+ sdr_set_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
+ sdr_set_bits(host->base + MSDC_INTEN, MSDC_INTEN_CDSC);
+ sdr_set_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
+ } else {
+ sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
+ sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
+ sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_CDSC);
+ }
+
if (host->top_base) {
writel(0, host->top_base + EMMC_TOP_CONTROL);
writel(0, host->top_base + EMMC_TOP_CMD);
@@ -1557,6 +1601,13 @@ static void msdc_init_hw(struct msdc_host *host)
static void msdc_deinit_hw(struct msdc_host *host)
{
u32 val;
+
+ if (host->internal_cd) {
+ /* Disabled card-detect */
+ sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
+ sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
+ }
+
/* Disable and clear all interrupts */
writel(0, host->base + MSDC_INTEN);
@@ -2055,13 +2106,31 @@ static void msdc_ack_sdio_irq(struct mmc_host *mmc)
__msdc_enable_sdio_irq(mmc, 1);
}
+static int msdc_get_cd(struct mmc_host *mmc)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ int val;
+
+ if (mmc->caps & MMC_CAP_NONREMOVABLE)
+ return 1;
+
+ if (!host->internal_cd)
+ return mmc_gpio_get_cd(mmc);
+
+ val = readl(host->base + MSDC_PS) & MSDC_PS_CDSTS;
+ if (mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH)
+ return !!val;
+ else
+ return !val;
+}
+
static const struct mmc_host_ops mt_msdc_ops = {
.post_req = msdc_post_req,
.pre_req = msdc_pre_req,
.request = msdc_ops_request,
.set_ios = msdc_ops_set_ios,
.get_ro = mmc_gpio_get_ro,
- .get_cd = mmc_gpio_get_cd,
+ .get_cd = msdc_get_cd,
.enable_sdio_irq = msdc_enable_sdio_irq,
.ack_sdio_irq = msdc_ack_sdio_irq,
.start_signal_voltage_switch = msdc_ops_switch_volt,
@@ -2123,9 +2192,11 @@ static int msdc_drv_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- host->top_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(host->top_base))
- host->top_base = NULL;
+ if (res) {
+ host->top_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(host->top_base))
+ host->top_base = NULL;
+ }
ret = mmc_regulator_get_supply(mmc);
if (ret)
@@ -2191,6 +2262,16 @@ static int msdc_drv_probe(struct platform_device *pdev)
else
mmc->f_min = DIV_ROUND_UP(host->src_clk_freq, 4 * 4095);
+ if (!(mmc->caps & MMC_CAP_NONREMOVABLE) &&
+ !mmc_can_gpio_cd(mmc) &&
+ host->dev_comp->use_internal_cd) {
+ /*
+ * Is removable but no GPIO declared, so
+ * use internal functionality.
+ */
+ host->internal_cd = true;
+ }
+
if (mmc->caps & MMC_CAP_SDIO_IRQ)
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
@@ -2227,7 +2308,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
msdc_init_hw(host);
ret = devm_request_irq(&pdev->dev, host->irq, msdc_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT, pdev->name, host);
+ IRQF_TRIGGER_NONE, pdev->name, host);
if (ret)
goto release;
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 4f06fb03c0a2..c021d433b04f 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -648,7 +648,8 @@ static int mxs_mmc_probe(struct platform_device *pdev)
/* set mmc core parameters */
mmc->ops = &mxs_mmc_ops;
mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
- MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23;
+ MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23 |
+ MMC_CAP_ERASE;
host->broken_cd = of_property_read_bool(np, "broken-cd");
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c
index 8a274b91804e..3c4d950a4755 100644
--- a/drivers/mmc/host/of_mmc_spi.c
+++ b/drivers/mmc/host/of_mmc_spi.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OpenFirmware bindings for the MMC-over-SPI driver
*
* Copyright (c) MontaVista Software, Inc. 2008.
*
* Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
*/
#include <linux/kernel.h>
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 29a1ddaa7466..952fa4063ff8 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2077,7 +2077,7 @@ static int omap_hsmmc_runtime_suspend(struct device *dev)
unsigned long flags;
int ret = 0;
- host = platform_get_drvdata(to_platform_device(dev));
+ host = dev_get_drvdata(dev);
omap_hsmmc_context_save(host);
dev_dbg(dev, "disabled\n");
@@ -2118,7 +2118,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
struct omap_hsmmc_host *host;
unsigned long flags;
- host = platform_get_drvdata(to_platform_device(dev));
+ host = dev_get_drvdata(dev);
omap_hsmmc_context_restore(host);
dev_dbg(dev, "enabled\n");
diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h
index 8394a7bb1fc1..c0504aa90857 100644
--- a/drivers/mmc/host/renesas_sdhi.h
+++ b/drivers/mmc/host/renesas_sdhi.h
@@ -3,7 +3,7 @@
* Renesas Mobile SDHI
*
* Copyright (C) 2017 Horms Solutions Ltd., Simon Horman
- * Copyright (C) 2017 Renesas Electronics Corporation
+ * Copyright (C) 2017-19 Renesas Electronics Corporation
*/
#ifndef RENESAS_SDHI_H
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 8742e27e4e8b..5e9e36ed2107 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -2,8 +2,8 @@
/*
* Renesas SDHI
*
- * Copyright (C) 2015-17 Renesas Electronics Corporation
- * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2015-19 Renesas Electronics Corporation
+ * Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2009 Magnus Damm
*
@@ -779,14 +779,14 @@ int renesas_sdhi_probe(struct platform_device *pdev,
if (ver < SDHI_VER_GEN2_SDR104 && mmc_data->max_blk_count > U16_MAX)
mmc_data->max_blk_count = U16_MAX;
- ret = tmio_mmc_host_probe(host);
- if (ret < 0)
- goto edisclk;
-
/* One Gen2 SDHI incarnation does NOT have a CBSY bit */
if (ver == SDHI_VER_GEN2_SDR50)
mmc_data->flags &= ~TMIO_MMC_HAVE_CBSY;
+ ret = tmio_mmc_host_probe(host);
+ if (ret < 0)
+ goto edisclk;
+
/* Enable tuning iff we have an SCC and a supported mode */
if (of_data && of_data->scc_offset &&
(host->mmc->caps & MMC_CAP_UHS_SDR104 ||
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index 9dfafa2a90a3..751fe91c7571 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -2,8 +2,9 @@
/*
* DMA support for Internal DMAC with SDHI SD/SDIO controller
*
- * Copyright (C) 2016-17 Renesas Electronics Corporation
+ * Copyright (C) 2016-19 Renesas Electronics Corporation
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
+ * Copyright (C) 2018-19 Sang Engineering, Wolfram Sang
*/
#include <linux/bitops.h>
@@ -95,8 +96,8 @@ static const struct renesas_sdhi_of_data of_rza2_compatible = {
.scc_offset = 0 - 0x1000,
.taps = rcar_gen3_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen3_scc_taps),
- /* DMAC can handle 0xffffffff blk count but only 1 segment */
- .max_blk_count = 0xffffffff,
+ /* DMAC can handle 32bit blk count but only 1 segment */
+ .max_blk_count = UINT_MAX / TMIO_MAX_BLK_SIZE,
.max_segs = 1,
};
@@ -110,8 +111,8 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = {
.scc_offset = 0x1000,
.taps = rcar_gen3_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen3_scc_taps),
- /* DMAC can handle 0xffffffff blk count but only 1 segment */
- .max_blk_count = 0xffffffff,
+ /* DMAC can handle 32bit blk count but only 1 segment */
+ .max_blk_count = UINT_MAX / TMIO_MAX_BLK_SIZE,
.max_segs = 1,
};
diff --git a/drivers/mmc/host/renesas_sdhi_sys_dmac.c b/drivers/mmc/host/renesas_sdhi_sys_dmac.c
index 02cd878e209f..1d29b822efb8 100644
--- a/drivers/mmc/host/renesas_sdhi_sys_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_sys_dmac.c
@@ -2,8 +2,8 @@
/*
* DMA support use of SYS DMAC with SDHI SD/SDIO controller
*
- * Copyright (C) 2016-17 Renesas Electronics Corporation
- * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2016-19 Renesas Electronics Corporation
+ * Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2017 Horms Solutions, Simon Horman
* Copyright (C) 2010-2011 Guennadi Liakhovetski
*/
@@ -65,7 +65,7 @@ static const struct renesas_sdhi_of_data of_rcar_gen2_compatible = {
.scc_offset = 0x0300,
.taps = rcar_gen2_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen2_scc_taps),
- .max_blk_count = 0xffffffff,
+ .max_blk_count = UINT_MAX / TMIO_MAX_BLK_SIZE,
};
/* Definitions for sampling clocks */
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 8dbbc1f62b70..c391510e9ef4 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -14,6 +14,7 @@
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/pm_qos.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
@@ -73,6 +74,7 @@
#define ESDHC_STROBE_DLL_CTRL_ENABLE (1 << 0)
#define ESDHC_STROBE_DLL_CTRL_RESET (1 << 1)
#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT 3
+#define ESDHC_STROBE_DLL_CTRL_SLV_UPDATE_INT_DEFAULT (4 << 20)
#define ESDHC_STROBE_DLL_STATUS 0x74
#define ESDHC_STROBE_DLL_STS_REF_LOCK (1 << 1)
@@ -156,6 +158,8 @@
#define ESDHC_FLAG_HS400_ES BIT(11)
/* The IP has Host Controller Interface for Command Queuing */
#define ESDHC_FLAG_CQHCI BIT(12)
+/* need request pmqos during low power */
+#define ESDHC_FLAG_PMQOS BIT(13)
struct esdhc_soc_data {
u32 flags;
@@ -204,6 +208,12 @@ static const struct esdhc_soc_data usdhc_imx7d_data = {
| ESDHC_FLAG_HS400,
};
+static struct esdhc_soc_data usdhc_imx7ulp_data = {
+ .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
+ | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
+ | ESDHC_FLAG_PMQOS | ESDHC_FLAG_HS400,
+};
+
static struct esdhc_soc_data usdhc_imx8qxp_data = {
.flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
| ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
@@ -229,6 +239,7 @@ struct pltfm_imx_data {
WAIT_FOR_INT, /* sent CMD12, waiting for response INT */
} multiblock_status;
u32 is_ddr;
+ struct pm_qos_request pm_qos_req;
};
static const struct platform_device_id imx_esdhc_devtype[] = {
@@ -257,6 +268,7 @@ static const struct of_device_id imx_esdhc_dt_ids[] = {
{ .compatible = "fsl,imx6q-usdhc", .data = &usdhc_imx6q_data, },
{ .compatible = "fsl,imx6ull-usdhc", .data = &usdhc_imx6ull_data, },
{ .compatible = "fsl,imx7d-usdhc", .data = &usdhc_imx7d_data, },
+ { .compatible = "fsl,imx7ulp-usdhc", .data = &usdhc_imx7ulp_data, },
{ .compatible = "fsl,imx8qxp-usdhc", .data = &usdhc_imx8qxp_data, },
{ /* sentinel */ }
};
@@ -983,15 +995,19 @@ static void esdhc_set_strobe_dll(struct sdhci_host *host)
/* force a reset on strobe dll */
writel(ESDHC_STROBE_DLL_CTRL_RESET,
host->ioaddr + ESDHC_STROBE_DLL_CTRL);
+ /* clear the reset bit on strobe dll before any setting */
+ writel(0, host->ioaddr + ESDHC_STROBE_DLL_CTRL);
+
/*
* enable strobe dll ctrl and adjust the delay target
* for the uSDHC loopback read clock
*/
v = ESDHC_STROBE_DLL_CTRL_ENABLE |
+ ESDHC_STROBE_DLL_CTRL_SLV_UPDATE_INT_DEFAULT |
(7 << ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT);
writel(v, host->ioaddr + ESDHC_STROBE_DLL_CTRL);
- /* wait 1us to make sure strobe dll status register stable */
- udelay(1);
+ /* wait 5us to make sure strobe dll status register stable */
+ udelay(5);
v = readl(host->ioaddr + ESDHC_STROBE_DLL_STATUS);
if (!(v & ESDHC_STROBE_DLL_STS_REF_LOCK))
dev_warn(mmc_dev(host->mmc),
@@ -1436,6 +1452,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
imx_data->socdata = of_id ? of_id->data : (struct esdhc_soc_data *)
pdev->id_entry->driver_data;
+ if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
+ pm_qos_add_request(&imx_data->pm_qos_req,
+ PM_QOS_CPU_DMA_LATENCY, 0);
+
imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(imx_data->clk_ipg)) {
err = PTR_ERR(imx_data->clk_ipg);
@@ -1557,6 +1577,8 @@ disable_ipg_clk:
disable_per_clk:
clk_disable_unprepare(imx_data->clk_per);
free_sdhci:
+ if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
+ pm_qos_remove_request(&imx_data->pm_qos_req);
sdhci_pltfm_free(pdev);
return err;
}
@@ -1578,6 +1600,9 @@ static int sdhci_esdhc_imx_remove(struct platform_device *pdev)
clk_disable_unprepare(imx_data->clk_ipg);
clk_disable_unprepare(imx_data->clk_ahb);
+ if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
+ pm_qos_remove_request(&imx_data->pm_qos_req);
+
sdhci_pltfm_free(pdev);
return 0;
@@ -1649,6 +1674,9 @@ static int sdhci_esdhc_runtime_suspend(struct device *dev)
}
clk_disable_unprepare(imx_data->clk_ahb);
+ if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
+ pm_qos_remove_request(&imx_data->pm_qos_req);
+
return ret;
}
@@ -1659,9 +1687,13 @@ static int sdhci_esdhc_runtime_resume(struct device *dev)
struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
int err;
+ if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
+ pm_qos_add_request(&imx_data->pm_qos_req,
+ PM_QOS_CPU_DMA_LATENCY, 0);
+
err = clk_prepare_enable(imx_data->clk_ahb);
if (err)
- return err;
+ goto remove_pm_qos_request;
if (!sdhci_sdio_irq_enabled(host)) {
err = clk_prepare_enable(imx_data->clk_per);
@@ -1690,6 +1722,9 @@ disable_per_clk:
clk_disable_unprepare(imx_data->clk_per);
disable_ahb_clk:
clk_disable_unprepare(imx_data->clk_ahb);
+remove_pm_qos_request:
+ if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
+ pm_qos_remove_request(&imx_data->pm_qos_req);
return err;
}
#endif
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index c9e3e050ccc8..88dc3f00a5be 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -832,7 +832,10 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
host->mmc_host_ops.start_signal_voltage_switch =
sdhci_arasan_voltage_switch;
sdhci_arasan->has_cqe = true;
- host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
+ host->mmc->caps2 |= MMC_CAP2_CQE;
+
+ if (!of_property_read_bool(np, "disable-cqe-dcmd"))
+ host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
}
ret = sdhci_arasan_add_host(sdhci_arasan);
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 4e669b4edfc1..e20c00f14109 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -24,6 +24,7 @@
#include <linux/ktime.h>
#include <linux/dma-mapping.h>
#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
#include "sdhci-pltfm.h"
#include "sdhci-esdhc.h"
@@ -81,6 +82,7 @@ struct sdhci_esdhc {
bool quirk_limited_clk_division;
bool quirk_unreliable_pulse_detection;
bool quirk_fixup_tuning;
+ bool quirk_ignore_data_inhibit;
unsigned int peripheral_clock;
const struct esdhc_clk_fixup *clk_fixup;
u32 div_ratio;
@@ -147,6 +149,19 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
return ret;
}
+ /*
+ * Some controllers have unreliable Data Line Active
+ * bit for commands with busy signal. This affects
+ * Command Inhibit (data) bit. Just ignore it since
+ * MMC core driver has already polled card status
+ * with CMD13 after any command with busy siganl.
+ */
+ if ((spec_reg == SDHCI_PRESENT_STATE) &&
+ (esdhc->quirk_ignore_data_inhibit == true)) {
+ ret = value & ~SDHCI_DATA_INHIBIT;
+ return ret;
+ }
+
ret = value;
return ret;
}
@@ -694,6 +709,9 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask)
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+ if (of_find_compatible_node(NULL, NULL, "fsl,p2020-esdhc"))
+ mdelay(5);
+
if (mask & SDHCI_RESET_ALL) {
val = sdhci_readl(host, ESDHC_TBCTL);
val &= ~ESDHC_TB_EN;
@@ -864,6 +882,25 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host,
sdhci_set_uhs_signaling(host, timing);
}
+static u32 esdhc_irq(struct sdhci_host *host, u32 intmask)
+{
+ u32 command;
+
+ if (of_find_compatible_node(NULL, NULL,
+ "fsl,p2020-esdhc")) {
+ command = SDHCI_GET_CMD(sdhci_readw(host,
+ SDHCI_COMMAND));
+ if (command == MMC_WRITE_MULTIPLE_BLOCK &&
+ sdhci_readw(host, SDHCI_BLOCK_COUNT) &&
+ intmask & SDHCI_INT_DATA_END) {
+ intmask &= ~SDHCI_INT_DATA_END;
+ sdhci_writel(host, SDHCI_INT_DATA_END,
+ SDHCI_INT_STATUS);
+ }
+ }
+ return intmask;
+}
+
#ifdef CONFIG_PM_SLEEP
static u32 esdhc_proctl;
static int esdhc_of_suspend(struct device *dev)
@@ -911,6 +948,7 @@ static const struct sdhci_ops sdhci_esdhc_be_ops = {
.set_bus_width = esdhc_pltfm_set_bus_width,
.reset = esdhc_reset,
.set_uhs_signaling = esdhc_set_uhs_signaling,
+ .irq = esdhc_irq,
};
static const struct sdhci_ops sdhci_esdhc_le_ops = {
@@ -928,6 +966,7 @@ static const struct sdhci_ops sdhci_esdhc_le_ops = {
.set_bus_width = esdhc_pltfm_set_bus_width,
.reset = esdhc_reset,
.set_uhs_signaling = esdhc_set_uhs_signaling,
+ .irq = esdhc_irq,
};
static const struct sdhci_pltfm_data sdhci_esdhc_be_pdata = {
@@ -955,6 +994,7 @@ static struct soc_device_attribute soc_incorrect_hostver[] = {
static struct soc_device_attribute soc_fixup_sdhc_clkdivs[] = {
{ .family = "QorIQ LX2160A", .revision = "1.0", },
+ { .family = "QorIQ LX2160A", .revision = "2.0", },
{ },
};
@@ -1074,6 +1114,11 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
if (esdhc->vendor_ver > VENDOR_V_22)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
+ if (of_find_compatible_node(NULL, NULL, "fsl,p2020-esdhc")) {
+ host->quirks2 |= SDHCI_QUIRK_RESET_AFTER_REQUEST;
+ host->quirks2 |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+ }
+
if (of_device_is_compatible(np, "fsl,p5040-esdhc") ||
of_device_is_compatible(np, "fsl,p5020-esdhc") ||
of_device_is_compatible(np, "fsl,p4080-esdhc") ||
@@ -1084,12 +1129,14 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
if (of_device_is_compatible(np, "fsl,ls1021a-esdhc"))
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+ esdhc->quirk_ignore_data_inhibit = false;
if (of_device_is_compatible(np, "fsl,p2020-esdhc")) {
/*
* Freescale messed up with P2020 as it has a non-standard
* host control register
*/
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL;
+ esdhc->quirk_ignore_data_inhibit = true;
}
/* call to generic mmc_of_parse to support additional capabilities */
diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index 9f20fff9781b..bdb80c503fde 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -785,7 +785,7 @@ static void sdhci_omap_set_uhs_signaling(struct sdhci_host *host,
sdhci_omap_start_clock(omap_host);
}
-void sdhci_omap_reset(struct sdhci_host *host, u8 mask)
+static void sdhci_omap_reset(struct sdhci_host *host, u8 mask)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host);
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 99b0fec2836b..ab9e2b901094 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -31,6 +31,10 @@
#include <linux/mmc/sdhci-pci-data.h>
#include <linux/acpi.h>
+#ifdef CONFIG_X86
+#include <asm/iosf_mbi.h>
+#endif
+
#include "cqhci.h"
#include "sdhci.h"
@@ -451,6 +455,50 @@ static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
.probe_slot = pch_hc_probe_slot,
};
+#ifdef CONFIG_X86
+
+#define BYT_IOSF_SCCEP 0x63
+#define BYT_IOSF_OCP_NETCTRL0 0x1078
+#define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8)
+
+static void byt_ocp_setting(struct pci_dev *pdev)
+{
+ u32 val = 0;
+
+ if (pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC &&
+ pdev->device != PCI_DEVICE_ID_INTEL_BYT_SDIO &&
+ pdev->device != PCI_DEVICE_ID_INTEL_BYT_SD &&
+ pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC2)
+ return;
+
+ if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
+ &val)) {
+ dev_err(&pdev->dev, "%s read error\n", __func__);
+ return;
+ }
+
+ if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE))
+ return;
+
+ val &= ~BYT_IOSF_OCP_TIMEOUT_BASE;
+
+ if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0,
+ val)) {
+ dev_err(&pdev->dev, "%s write error\n", __func__);
+ return;
+ }
+
+ dev_dbg(&pdev->dev, "%s completed\n", __func__);
+}
+
+#else
+
+static inline void byt_ocp_setting(struct pci_dev *pdev)
+{
+}
+
+#endif
+
enum {
INTEL_DSM_FNS = 0,
INTEL_DSM_V18_SWITCH = 3,
@@ -715,6 +763,8 @@ static void byt_probe_slot(struct sdhci_pci_slot *slot)
byt_read_dsm(slot);
+ byt_ocp_setting(slot->chip->pdev);
+
ops->execute_tuning = intel_execute_tuning;
ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
@@ -938,7 +988,35 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+
+static int byt_resume(struct sdhci_pci_chip *chip)
+{
+ byt_ocp_setting(chip->pdev);
+
+ return sdhci_pci_resume_host(chip);
+}
+
+#endif
+
+#ifdef CONFIG_PM
+
+static int byt_runtime_resume(struct sdhci_pci_chip *chip)
+{
+ byt_ocp_setting(chip->pdev);
+
+ return sdhci_pci_runtime_resume_host(chip);
+}
+
+#endif
+
static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
+#ifdef CONFIG_PM_SLEEP
+ .resume = byt_resume,
+#endif
+#ifdef CONFIG_PM
+ .runtime_resume = byt_runtime_resume,
+#endif
.allow_runtime_pm = true,
.probe_slot = byt_emmc_probe_slot,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
@@ -972,6 +1050,12 @@ static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
};
static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
+#ifdef CONFIG_PM_SLEEP
+ .resume = byt_resume,
+#endif
+#ifdef CONFIG_PM
+ .runtime_resume = byt_runtime_resume,
+#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_LED,
.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
@@ -983,6 +1067,12 @@ static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
};
static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
+#ifdef CONFIG_PM_SLEEP
+ .resume = byt_resume,
+#endif
+#ifdef CONFIG_PM
+ .runtime_resume = byt_runtime_resume,
+#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_LED,
.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
@@ -994,6 +1084,12 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
};
static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
+#ifdef CONFIG_PM_SLEEP
+ .resume = byt_resume,
+#endif
+#ifdef CONFIG_PM
+ .runtime_resume = byt_runtime_resume,
+#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_LED,
.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
@@ -1576,6 +1672,8 @@ static const struct pci_device_id pci_ids[] = {
SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd),
SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc),
SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd),
+ SDHCI_PCI_DEVICE(INTEL, CML_EMMC, intel_glk_emmc),
+ SDHCI_PCI_DEVICE(INTEL, CML_SD, intel_byt_sd),
SDHCI_PCI_DEVICE(O2, 8120, o2),
SDHCI_PCI_DEVICE(O2, 8220, o2),
SDHCI_PCI_DEVICE(O2, 8221, o2),
diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h
index 4ddb69a15cd7..e5dc6e44c7a4 100644
--- a/drivers/mmc/host/sdhci-pci.h
+++ b/drivers/mmc/host/sdhci-pci.h
@@ -50,6 +50,8 @@
#define PCI_DEVICE_ID_INTEL_CNPH_SD 0xa375
#define PCI_DEVICE_ID_INTEL_ICP_EMMC 0x34c4
#define PCI_DEVICE_ID_INTEL_ICP_SD 0x34f8
+#define PCI_DEVICE_ID_INTEL_CML_EMMC 0x02c4
+#define PCI_DEVICE_ID_INTEL_CML_SD 0x02f5
#define PCI_DEVICE_ID_SYSKONNECT_8000 0x8000
#define PCI_DEVICE_ID_VIA_95D0 0x95d0
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 32e62904c0d3..f608417ae967 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -66,6 +66,22 @@
#define SDHCI_VNDR_TUN_CTRL0_0 0x1c0
#define SDHCI_VNDR_TUN_CTRL0_TUN_HW_TAP 0x20000
+#define SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_MASK 0x03fc0000
+#define SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_SHIFT 18
+#define SDHCI_VNDR_TUN_CTRL0_MUL_M_MASK 0x00001fc0
+#define SDHCI_VNDR_TUN_CTRL0_MUL_M_SHIFT 6
+#define SDHCI_VNDR_TUN_CTRL0_TUN_ITER_MASK 0x000e000
+#define SDHCI_VNDR_TUN_CTRL0_TUN_ITER_SHIFT 13
+#define TRIES_128 2
+#define TRIES_256 4
+#define SDHCI_VNDR_TUN_CTRL0_TUN_WORD_SEL_MASK 0x7
+
+#define SDHCI_TEGRA_VNDR_TUN_CTRL1_0 0x1c4
+#define SDHCI_TEGRA_VNDR_TUN_STATUS0 0x1C8
+#define SDHCI_TEGRA_VNDR_TUN_STATUS1 0x1CC
+#define SDHCI_TEGRA_VNDR_TUN_STATUS1_TAP_MASK 0xFF
+#define SDHCI_TEGRA_VNDR_TUN_STATUS1_END_TAP_SHIFT 0x8
+#define TUNING_WORD_BIT_SIZE 32
#define SDHCI_TEGRA_AUTO_CAL_CONFIG 0x1e4
#define SDHCI_AUTO_CAL_START BIT(31)
@@ -90,6 +106,7 @@
#define NVQUIRK_HAS_PADCALIB BIT(6)
#define NVQUIRK_NEEDS_PAD_CONTROL BIT(7)
#define NVQUIRK_DIS_CARD_CLK_CONFIG_TAP BIT(8)
+#define NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING BIT(9)
/* SDMMC CQE Base Address for Tegra Host Ver 4.1 and Higher */
#define SDHCI_TEGRA_CQE_BASE_ADDR 0xF000
@@ -97,6 +114,8 @@
struct sdhci_tegra_soc_data {
const struct sdhci_pltfm_data *pdata;
u32 nvquirks;
+ u8 min_tap_delay;
+ u8 max_tap_delay;
};
/* Magic pull up and pull down pad calibration offsets */
@@ -136,6 +155,8 @@ struct sdhci_tegra {
u32 default_trim;
u32 dqs_trim;
bool enable_hwcq;
+ unsigned long curr_clk_rate;
+ u8 tuned_tap_delay;
};
static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
@@ -241,6 +262,7 @@ static void tegra210_sdhci_writew(struct sdhci_host *host, u16 val, int reg)
if (is_tuning_cmd) {
udelay(1);
+ sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
tegra_sdhci_configure_card_clk(host, clk_enabled);
}
}
@@ -722,6 +744,7 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
*/
host_clk = tegra_host->ddr_signaling ? clock * 2 : clock;
clk_set_rate(pltfm_host->clk, host_clk);
+ tegra_host->curr_clk_rate = host_clk;
if (tegra_host->ddr_signaling)
host->max_clk = host_clk;
else
@@ -770,6 +793,159 @@ static void tegra_sdhci_hs400_dll_cal(struct sdhci_host *host)
"HS400 delay line calibration timed out\n");
}
+static void tegra_sdhci_tap_correction(struct sdhci_host *host, u8 thd_up,
+ u8 thd_low, u8 fixed_tap)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
+ u32 val, tun_status;
+ u8 word, bit, edge1, tap, window;
+ bool tap_result;
+ bool start_fail = false;
+ bool start_pass = false;
+ bool end_pass = false;
+ bool first_fail = false;
+ bool first_pass = false;
+ u8 start_pass_tap = 0;
+ u8 end_pass_tap = 0;
+ u8 first_fail_tap = 0;
+ u8 first_pass_tap = 0;
+ u8 total_tuning_words = host->tuning_loop_count / TUNING_WORD_BIT_SIZE;
+
+ /*
+ * Read auto-tuned results and extract good valid passing window by
+ * filtering out un-wanted bubble/partial/merged windows.
+ */
+ for (word = 0; word < total_tuning_words; word++) {
+ val = sdhci_readl(host, SDHCI_VNDR_TUN_CTRL0_0);
+ val &= ~SDHCI_VNDR_TUN_CTRL0_TUN_WORD_SEL_MASK;
+ val |= word;
+ sdhci_writel(host, val, SDHCI_VNDR_TUN_CTRL0_0);
+ tun_status = sdhci_readl(host, SDHCI_TEGRA_VNDR_TUN_STATUS0);
+ bit = 0;
+ while (bit < TUNING_WORD_BIT_SIZE) {
+ tap = word * TUNING_WORD_BIT_SIZE + bit;
+ tap_result = tun_status & (1 << bit);
+ if (!tap_result && !start_fail) {
+ start_fail = true;
+ if (!first_fail) {
+ first_fail_tap = tap;
+ first_fail = true;
+ }
+
+ } else if (tap_result && start_fail && !start_pass) {
+ start_pass_tap = tap;
+ start_pass = true;
+ if (!first_pass) {
+ first_pass_tap = tap;
+ first_pass = true;
+ }
+
+ } else if (!tap_result && start_fail && start_pass &&
+ !end_pass) {
+ end_pass_tap = tap - 1;
+ end_pass = true;
+ } else if (tap_result && start_pass && start_fail &&
+ end_pass) {
+ window = end_pass_tap - start_pass_tap;
+ /* discard merged window and bubble window */
+ if (window >= thd_up || window < thd_low) {
+ start_pass_tap = tap;
+ end_pass = false;
+ } else {
+ /* set tap at middle of valid window */
+ tap = start_pass_tap + window / 2;
+ tegra_host->tuned_tap_delay = tap;
+ return;
+ }
+ }
+
+ bit++;
+ }
+ }
+
+ if (!first_fail) {
+ WARN_ON("no edge detected, continue with hw tuned delay.\n");
+ } else if (first_pass) {
+ /* set tap location at fixed tap relative to the first edge */
+ edge1 = first_fail_tap + (first_pass_tap - first_fail_tap) / 2;
+ if (edge1 - 1 > fixed_tap)
+ tegra_host->tuned_tap_delay = edge1 - fixed_tap;
+ else
+ tegra_host->tuned_tap_delay = edge1 + fixed_tap;
+ }
+}
+
+static void tegra_sdhci_post_tuning(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
+ const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
+ u32 avg_tap_dly, val, min_tap_dly, max_tap_dly;
+ u8 fixed_tap, start_tap, end_tap, window_width;
+ u8 thdupper, thdlower;
+ u8 num_iter;
+ u32 clk_rate_mhz, period_ps, bestcase, worstcase;
+
+ /* retain HW tuned tap to use incase if no correction is needed */
+ val = sdhci_readl(host, SDHCI_TEGRA_VENDOR_CLOCK_CTRL);
+ tegra_host->tuned_tap_delay = (val & SDHCI_CLOCK_CTRL_TAP_MASK) >>
+ SDHCI_CLOCK_CTRL_TAP_SHIFT;
+ if (soc_data->min_tap_delay && soc_data->max_tap_delay) {
+ min_tap_dly = soc_data->min_tap_delay;
+ max_tap_dly = soc_data->max_tap_delay;
+ clk_rate_mhz = tegra_host->curr_clk_rate / USEC_PER_SEC;
+ period_ps = USEC_PER_SEC / clk_rate_mhz;
+ bestcase = period_ps / min_tap_dly;
+ worstcase = period_ps / max_tap_dly;
+ /*
+ * Upper and Lower bound thresholds used to detect merged and
+ * bubble windows
+ */
+ thdupper = (2 * worstcase + bestcase) / 2;
+ thdlower = worstcase / 4;
+ /*
+ * fixed tap is used when HW tuning result contains single edge
+ * and tap is set at fixed tap delay relative to the first edge
+ */
+ avg_tap_dly = (period_ps * 2) / (min_tap_dly + max_tap_dly);
+ fixed_tap = avg_tap_dly / 2;
+
+ val = sdhci_readl(host, SDHCI_TEGRA_VNDR_TUN_STATUS1);
+ start_tap = val & SDHCI_TEGRA_VNDR_TUN_STATUS1_TAP_MASK;
+ end_tap = (val >> SDHCI_TEGRA_VNDR_TUN_STATUS1_END_TAP_SHIFT) &
+ SDHCI_TEGRA_VNDR_TUN_STATUS1_TAP_MASK;
+ window_width = end_tap - start_tap;
+ num_iter = host->tuning_loop_count;
+ /*
+ * partial window includes edges of the tuning range.
+ * merged window includes more taps so window width is higher
+ * than upper threshold.
+ */
+ if (start_tap == 0 || (end_tap == (num_iter - 1)) ||
+ (end_tap == num_iter - 2) || window_width >= thdupper) {
+ pr_debug("%s: Apply tuning correction\n",
+ mmc_hostname(host->mmc));
+ tegra_sdhci_tap_correction(host, thdupper, thdlower,
+ fixed_tap);
+ }
+ }
+
+ tegra_sdhci_set_tap(host, tegra_host->tuned_tap_delay);
+}
+
+static int tegra_sdhci_execute_hw_tuning(struct mmc_host *mmc, u32 opcode)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ int err;
+
+ err = sdhci_execute_tuning(mmc, opcode);
+ if (!err && !host->tuning_err)
+ tegra_sdhci_post_tuning(host);
+
+ return err;
+}
+
static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
unsigned timing)
{
@@ -778,16 +954,22 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
bool set_default_tap = false;
bool set_dqs_trim = false;
bool do_hs400_dll_cal = false;
+ u8 iter = TRIES_256;
+ u32 val;
+ tegra_host->ddr_signaling = false;
switch (timing) {
case MMC_TIMING_UHS_SDR50:
+ break;
case MMC_TIMING_UHS_SDR104:
case MMC_TIMING_MMC_HS200:
/* Don't set default tap on tunable modes. */
+ iter = TRIES_128;
break;
case MMC_TIMING_MMC_HS400:
set_dqs_trim = true;
do_hs400_dll_cal = true;
+ iter = TRIES_128;
break;
case MMC_TIMING_MMC_DDR52:
case MMC_TIMING_UHS_DDR50:
@@ -799,11 +981,25 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
break;
}
+ val = sdhci_readl(host, SDHCI_VNDR_TUN_CTRL0_0);
+ val &= ~(SDHCI_VNDR_TUN_CTRL0_TUN_ITER_MASK |
+ SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_MASK |
+ SDHCI_VNDR_TUN_CTRL0_MUL_M_MASK);
+ val |= (iter << SDHCI_VNDR_TUN_CTRL0_TUN_ITER_SHIFT |
+ 0 << SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_SHIFT |
+ 1 << SDHCI_VNDR_TUN_CTRL0_MUL_M_SHIFT);
+ sdhci_writel(host, val, SDHCI_VNDR_TUN_CTRL0_0);
+ sdhci_writel(host, 0, SDHCI_TEGRA_VNDR_TUN_CTRL1_0);
+
+ host->tuning_loop_count = (iter == TRIES_128) ? 128 : 256;
+
sdhci_set_uhs_signaling(host, timing);
tegra_sdhci_pad_autocalib(host);
- if (set_default_tap)
+ if (tegra_host->tuned_tap_delay && !set_default_tap)
+ tegra_sdhci_set_tap(host, tegra_host->tuned_tap_delay);
+ else
tegra_sdhci_set_tap(host, tegra_host->default_tap);
if (set_dqs_trim)
@@ -928,23 +1124,86 @@ static void tegra_sdhci_voltage_switch(struct sdhci_host *host)
tegra_host->pad_calib_required = true;
}
+static void tegra_cqhci_writel(struct cqhci_host *cq_host, u32 val, int reg)
+{
+ struct mmc_host *mmc = cq_host->mmc;
+ u8 ctrl;
+ ktime_t timeout;
+ bool timed_out;
+
+ /*
+ * During CQE resume/unhalt, CQHCI driver unhalts CQE prior to
+ * cqhci_host_ops enable where SDHCI DMA and BLOCK_SIZE registers need
+ * to be re-configured.
+ * Tegra CQHCI/SDHCI prevents write access to block size register when
+ * CQE is unhalted. So handling CQE resume sequence here to configure
+ * SDHCI block registers prior to exiting CQE halt state.
+ */
+ if (reg == CQHCI_CTL && !(val & CQHCI_HALT) &&
+ cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) {
+ sdhci_cqe_enable(mmc);
+ writel(val, cq_host->mmio + reg);
+ timeout = ktime_add_us(ktime_get(), 50);
+ while (1) {
+ timed_out = ktime_compare(ktime_get(), timeout) > 0;
+ ctrl = cqhci_readl(cq_host, CQHCI_CTL);
+ if (!(ctrl & CQHCI_HALT) || timed_out)
+ break;
+ }
+ /*
+ * CQE usually resumes very quick, but incase if Tegra CQE
+ * doesn't resume retry unhalt.
+ */
+ if (timed_out)
+ writel(val, cq_host->mmio + reg);
+ } else {
+ writel(val, cq_host->mmio + reg);
+ }
+}
+
+static void sdhci_tegra_update_dcmd_desc(struct mmc_host *mmc,
+ struct mmc_request *mrq, u64 *data)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(mmc_priv(mmc));
+ struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
+ const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
+
+ if (soc_data->nvquirks & NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING &&
+ mrq->cmd->flags & MMC_RSP_R1B)
+ *data |= CQHCI_CMD_TIMING(1);
+}
+
static void sdhci_tegra_cqe_enable(struct mmc_host *mmc)
{
struct cqhci_host *cq_host = mmc->cqe_private;
- u32 cqcfg = 0;
+ u32 val;
/*
- * Tegra SDMMC Controller design prevents write access to BLOCK_COUNT
- * registers when CQE is enabled.
+ * Tegra CQHCI/SDMMC design prevents write access to sdhci block size
+ * register when CQE is enabled and unhalted.
+ * CQHCI driver enables CQE prior to activation, so disable CQE before
+ * programming block size in sdhci controller and enable it back.
*/
- cqcfg = cqhci_readl(cq_host, CQHCI_CFG);
- if (cqcfg & CQHCI_ENABLE)
- cqhci_writel(cq_host, (cqcfg & ~CQHCI_ENABLE), CQHCI_CFG);
-
- sdhci_cqe_enable(mmc);
+ if (!cq_host->activated) {
+ val = cqhci_readl(cq_host, CQHCI_CFG);
+ if (val & CQHCI_ENABLE)
+ cqhci_writel(cq_host, (val & ~CQHCI_ENABLE),
+ CQHCI_CFG);
+ sdhci_cqe_enable(mmc);
+ if (val & CQHCI_ENABLE)
+ cqhci_writel(cq_host, val, CQHCI_CFG);
+ }
- if (cqcfg & CQHCI_ENABLE)
- cqhci_writel(cq_host, cqcfg, CQHCI_CFG);
+ /*
+ * CMD CRC errors are seen sometimes with some eMMC devices when status
+ * command is sent during transfer of last data block which is the
+ * default case as send status command block counter (CBC) is 1.
+ * Recommended fix to set CBC to 0 allowing send status command only
+ * when data lines are idle.
+ */
+ val = cqhci_readl(cq_host, CQHCI_SSC1);
+ val &= ~CQHCI_SSC1_CBC_MASK;
+ cqhci_writel(cq_host, val, CQHCI_SSC1);
}
static void sdhci_tegra_dumpregs(struct mmc_host *mmc)
@@ -966,9 +1225,11 @@ static u32 sdhci_tegra_cqhci_irq(struct sdhci_host *host, u32 intmask)
}
static const struct cqhci_host_ops sdhci_tegra_cqhci_ops = {
+ .write_l = tegra_cqhci_writel,
.enable = sdhci_tegra_cqe_enable,
.disable = sdhci_cqe_disable,
.dumpregs = sdhci_tegra_dumpregs,
+ .update_dcmd_desc = sdhci_tegra_update_dcmd_desc,
};
static const struct sdhci_ops tegra_sdhci_ops = {
@@ -1109,6 +1370,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104,
+ .min_tap_delay = 106,
+ .max_tap_delay = 185,
};
static const struct sdhci_ops tegra186_sdhci_ops = {
@@ -1148,10 +1411,25 @@ static const struct sdhci_tegra_soc_data soc_data_tegra186 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING,
+ .min_tap_delay = 84,
+ .max_tap_delay = 136,
+};
+
+static const struct sdhci_tegra_soc_data soc_data_tegra194 = {
+ .pdata = &sdhci_tegra186_pdata,
+ .nvquirks = NVQUIRK_NEEDS_PAD_CONTROL |
+ NVQUIRK_HAS_PADCALIB |
+ NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
+ NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104,
+ .min_tap_delay = 96,
+ .max_tap_delay = 139,
};
static const struct of_device_id sdhci_tegra_dt_match[] = {
+ { .compatible = "nvidia,tegra194-sdhci", .data = &soc_data_tegra194 },
{ .compatible = "nvidia,tegra186-sdhci", .data = &soc_data_tegra186 },
{ .compatible = "nvidia,tegra210-sdhci", .data = &soc_data_tegra210 },
{ .compatible = "nvidia,tegra124-sdhci", .data = &soc_data_tegra124 },
@@ -1250,6 +1528,10 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
host->mmc_host_ops.hs400_enhanced_strobe =
tegra_sdhci_hs400_enhanced_strobe;
+ if (!host->ops->platform_execute_tuning)
+ host->mmc_host_ops.execute_tuning =
+ tegra_sdhci_execute_hw_tuning;
+
rc = mmc_of_parse(host->mmc);
if (rc)
goto err_parse_dt;
@@ -1329,11 +1611,67 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int ret;
+
+ if (host->mmc->caps2 & MMC_CAP2_CQE) {
+ ret = cqhci_suspend(host->mmc);
+ if (ret)
+ return ret;
+ }
+
+ ret = sdhci_suspend_host(host);
+ if (ret) {
+ cqhci_resume(host->mmc);
+ return ret;
+ }
+
+ clk_disable_unprepare(pltfm_host->clk);
+ return 0;
+}
+
+static int __maybe_unused sdhci_tegra_resume(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int ret;
+
+ ret = clk_prepare_enable(pltfm_host->clk);
+ if (ret)
+ return ret;
+
+ ret = sdhci_resume_host(host);
+ if (ret)
+ goto disable_clk;
+
+ if (host->mmc->caps2 & MMC_CAP2_CQE) {
+ ret = cqhci_resume(host->mmc);
+ if (ret)
+ goto suspend_host;
+ }
+
+ return 0;
+
+suspend_host:
+ sdhci_suspend_host(host);
+disable_clk:
+ clk_disable_unprepare(pltfm_host->clk);
+ return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
+ sdhci_tegra_resume);
+
static struct platform_driver sdhci_tegra_driver = {
.driver = {
.name = "sdhci-tegra",
.of_match_table = sdhci_tegra_dt_match,
- .pm = &sdhci_pltfm_pmops,
+ .pm = &sdhci_tegra_dev_pm_ops,
},
.probe = sdhci_tegra_probe,
.remove = sdhci_tegra_remove,
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 42e1bad024f4..97158344b862 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -446,6 +446,28 @@ static inline void sdhci_led_deactivate(struct sdhci_host *host)
#endif
+static void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq,
+ unsigned long timeout)
+{
+ if (sdhci_data_line_cmd(mrq->cmd))
+ mod_timer(&host->data_timer, timeout);
+ else
+ mod_timer(&host->timer, timeout);
+}
+
+static void sdhci_del_timer(struct sdhci_host *host, struct mmc_request *mrq)
+{
+ if (sdhci_data_line_cmd(mrq->cmd))
+ del_timer(&host->data_timer);
+ else
+ del_timer(&host->timer);
+}
+
+static inline bool sdhci_has_requests(struct sdhci_host *host)
+{
+ return host->cmd || host->data_cmd;
+}
+
/*****************************************************************************\
* *
* Core functions *
@@ -1221,6 +1243,18 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
{
int i;
+ if (host->cmd && host->cmd->mrq == mrq)
+ host->cmd = NULL;
+
+ if (host->data_cmd && host->data_cmd->mrq == mrq)
+ host->data_cmd = NULL;
+
+ if (host->data && host->data->mrq == mrq)
+ host->data = NULL;
+
+ if (sdhci_needs_reset(host, mrq))
+ host->pending_reset = true;
+
for (i = 0; i < SDHCI_MAX_MRQS; i++) {
if (host->mrqs_done[i] == mrq) {
WARN_ON(1);
@@ -1237,24 +1271,17 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
WARN_ON(i >= SDHCI_MAX_MRQS);
- tasklet_schedule(&host->finish_tasklet);
+ sdhci_del_timer(host, mrq);
+
+ if (!sdhci_has_requests(host))
+ sdhci_led_deactivate(host);
}
static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
{
- if (host->cmd && host->cmd->mrq == mrq)
- host->cmd = NULL;
-
- if (host->data_cmd && host->data_cmd->mrq == mrq)
- host->data_cmd = NULL;
-
- if (host->data && host->data->mrq == mrq)
- host->data = NULL;
-
- if (sdhci_needs_reset(host, mrq))
- host->pending_reset = true;
-
__sdhci_finish_mrq(host, mrq);
+
+ queue_work(host->complete_wq, &host->complete_work);
}
static void sdhci_finish_data(struct sdhci_host *host)
@@ -1305,34 +1332,17 @@ static void sdhci_finish_data(struct sdhci_host *host)
* responsibility to send the stop command if required.
*/
if (data->mrq->cap_cmd_during_tfr) {
- sdhci_finish_mrq(host, data->mrq);
+ __sdhci_finish_mrq(host, data->mrq);
} else {
/* Avoid triggering warning in sdhci_send_command() */
host->cmd = NULL;
sdhci_send_command(host, data->stop);
}
} else {
- sdhci_finish_mrq(host, data->mrq);
+ __sdhci_finish_mrq(host, data->mrq);
}
}
-static void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq,
- unsigned long timeout)
-{
- if (sdhci_data_line_cmd(mrq->cmd))
- mod_timer(&host->data_timer, timeout);
- else
- mod_timer(&host->timer, timeout);
-}
-
-static void sdhci_del_timer(struct sdhci_host *host, struct mmc_request *mrq)
-{
- if (sdhci_data_line_cmd(mrq->cmd))
- del_timer(&host->data_timer);
- else
- del_timer(&host->timer);
-}
-
void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
{
int flags;
@@ -1492,7 +1502,7 @@ static void sdhci_finish_command(struct sdhci_host *host)
sdhci_finish_data(host);
if (!cmd->data)
- sdhci_finish_mrq(host, cmd->mrq);
+ __sdhci_finish_mrq(host, cmd->mrq);
}
}
@@ -2364,9 +2374,9 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
/*
* Issue opcode repeatedly till Execute Tuning is set to 0 or the number
- * of loops reaches 40 times.
+ * of loops reaches tuning loop count.
*/
- for (i = 0; i < MAX_TUNING_LOOP; i++) {
+ for (i = 0; i < host->tuning_loop_count; i++) {
u16 ctrl;
sdhci_send_tuning(host, opcode);
@@ -2523,11 +2533,6 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq)
sdhci_pre_dma_transfer(host, mrq->data, COOKIE_PRE_MAPPED);
}
-static inline bool sdhci_has_requests(struct sdhci_host *host)
-{
- return host->cmd || host->data_cmd;
-}
-
static void sdhci_error_out_mrqs(struct sdhci_host *host, int err)
{
if (host->data_cmd) {
@@ -2589,7 +2594,7 @@ static const struct mmc_host_ops sdhci_ops = {
/*****************************************************************************\
* *
- * Tasklets *
+ * Request done *
* *
\*****************************************************************************/
@@ -2612,8 +2617,6 @@ static bool sdhci_request_done(struct sdhci_host *host)
return true;
}
- sdhci_del_timer(host, mrq);
-
/*
* Always unmap the data buffers if they were mapped by
* sdhci_prepare_data() whenever we finish with a request.
@@ -2695,9 +2698,6 @@ static bool sdhci_request_done(struct sdhci_host *host)
host->pending_reset = false;
}
- if (!sdhci_has_requests(host))
- sdhci_led_deactivate(host);
-
host->mrqs_done[i] = NULL;
spin_unlock_irqrestore(&host->lock, flags);
@@ -2707,9 +2707,10 @@ static bool sdhci_request_done(struct sdhci_host *host)
return false;
}
-static void sdhci_tasklet_finish(unsigned long param)
+static void sdhci_complete_work(struct work_struct *work)
{
- struct sdhci_host *host = (struct sdhci_host *)param;
+ struct sdhci_host *host = container_of(work, struct sdhci_host,
+ complete_work);
while (!sdhci_request_done(host))
;
@@ -2754,6 +2755,7 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
if (host->data) {
host->data->error = -ETIMEDOUT;
sdhci_finish_data(host);
+ queue_work(host->complete_wq, &host->complete_work);
} else if (host->data_cmd) {
host->data_cmd->error = -ETIMEDOUT;
sdhci_finish_mrq(host, host->data_cmd->mrq);
@@ -2819,7 +2821,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
return;
}
- sdhci_finish_mrq(host, host->cmd->mrq);
+ __sdhci_finish_mrq(host, host->cmd->mrq);
return;
}
@@ -2833,7 +2835,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
mrq->sbc->error = err;
- sdhci_finish_mrq(host, mrq);
+ __sdhci_finish_mrq(host, mrq);
return;
}
}
@@ -2897,7 +2899,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
if (intmask & SDHCI_INT_DATA_TIMEOUT) {
host->data_cmd = NULL;
data_cmd->error = -ETIMEDOUT;
- sdhci_finish_mrq(host, data_cmd->mrq);
+ __sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
if (intmask & SDHCI_INT_DATA_END) {
@@ -2910,7 +2912,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
if (host->cmd == data_cmd)
return;
- sdhci_finish_mrq(host, data_cmd->mrq);
+ __sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
}
@@ -2993,12 +2995,24 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
}
}
+static inline bool sdhci_defer_done(struct sdhci_host *host,
+ struct mmc_request *mrq)
+{
+ struct mmc_data *data = mrq->data;
+
+ return host->pending_reset ||
+ ((host->flags & SDHCI_REQ_USE_DMA) && data &&
+ data->host_cookie == COOKIE_MAPPED);
+}
+
static irqreturn_t sdhci_irq(int irq, void *dev_id)
{
+ struct mmc_request *mrqs_done[SDHCI_MAX_MRQS] = {0};
irqreturn_t result = IRQ_NONE;
struct sdhci_host *host = dev_id;
u32 intmask, mask, unexpected = 0;
int max_loops = 16;
+ int i;
spin_lock(&host->lock);
@@ -3092,9 +3106,30 @@ cont:
intmask = sdhci_readl(host, SDHCI_INT_STATUS);
} while (intmask && --max_loops);
+
+ /* Determine if mrqs can be completed immediately */
+ for (i = 0; i < SDHCI_MAX_MRQS; i++) {
+ struct mmc_request *mrq = host->mrqs_done[i];
+
+ if (!mrq)
+ continue;
+
+ if (sdhci_defer_done(host, mrq)) {
+ result = IRQ_WAKE_THREAD;
+ } else {
+ mrqs_done[i] = mrq;
+ host->mrqs_done[i] = NULL;
+ }
+ }
out:
spin_unlock(&host->lock);
+ /* Process mrqs ready for immediate completion */
+ for (i = 0; i < SDHCI_MAX_MRQS; i++) {
+ if (mrqs_done[i])
+ mmc_request_done(host->mmc, mrqs_done[i]);
+ }
+
if (unexpected) {
pr_err("%s: Unexpected interrupt 0x%08x.\n",
mmc_hostname(host->mmc), unexpected);
@@ -3110,6 +3145,9 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
unsigned long flags;
u32 isr;
+ while (!sdhci_request_done(host))
+ ;
+
spin_lock_irqsave(&host->lock, flags);
isr = host->thread_isr;
host->thread_isr = 0;
@@ -3131,7 +3169,7 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
spin_unlock_irqrestore(&host->lock, flags);
}
- return isr ? IRQ_HANDLED : IRQ_NONE;
+ return IRQ_HANDLED;
}
/*****************************************************************************\
@@ -3483,6 +3521,7 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev,
host->cqe_err_ier = SDHCI_CQE_INT_ERR_MASK;
host->tuning_delay = -1;
+ host->tuning_loop_count = MAX_TUNING_LOOP;
host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG;
@@ -4213,14 +4252,15 @@ EXPORT_SYMBOL_GPL(sdhci_cleanup_host);
int __sdhci_add_host(struct sdhci_host *host)
{
+ unsigned int flags = WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_HIGHPRI;
struct mmc_host *mmc = host->mmc;
int ret;
- /*
- * Init tasklets.
- */
- tasklet_init(&host->finish_tasklet,
- sdhci_tasklet_finish, (unsigned long)host);
+ host->complete_wq = alloc_workqueue("sdhci", flags, 0);
+ if (!host->complete_wq)
+ return -ENOMEM;
+
+ INIT_WORK(&host->complete_work, sdhci_complete_work);
timer_setup(&host->timer, sdhci_timeout_timer, 0);
timer_setup(&host->data_timer, sdhci_timeout_data_timer, 0);
@@ -4234,7 +4274,7 @@ int __sdhci_add_host(struct sdhci_host *host)
if (ret) {
pr_err("%s: Failed to request IRQ %d: %d\n",
mmc_hostname(mmc), host->irq, ret);
- goto untasklet;
+ goto unwq;
}
ret = sdhci_led_register(host);
@@ -4265,8 +4305,8 @@ unirq:
sdhci_writel(host, 0, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
free_irq(host->irq, host);
-untasklet:
- tasklet_kill(&host->finish_tasklet);
+unwq:
+ destroy_workqueue(host->complete_wq);
return ret;
}
@@ -4328,7 +4368,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
del_timer_sync(&host->timer);
del_timer_sync(&host->data_timer);
- tasklet_kill(&host->finish_tasklet);
+ destroy_workqueue(host->complete_wq);
if (!IS_ERR(mmc->supply.vqmmc))
regulator_disable(mmc->supply.vqmmc);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 01002cba1359..d6bcc584c92b 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -560,7 +560,8 @@ struct sdhci_host {
unsigned int desc_sz; /* ADMA descriptor size */
- struct tasklet_struct finish_tasklet; /* Tasklet structures */
+ struct workqueue_struct *complete_wq; /* Request completion wq */
+ struct work_struct complete_work; /* Request completion work */
struct timer_list timer; /* Timer for timeouts */
struct timer_list data_timer; /* Timer for data timeouts */
@@ -596,6 +597,7 @@ struct sdhci_host {
#define SDHCI_TUNING_MODE_3 2
/* Delay (ms) between tuning commands */
int tuning_delay;
+ int tuning_loop_count;
/* Host SDMA buffer boundary. */
u32 sdma_boundary;
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
index eea183e90f1b..a91c0b45c48d 100644
--- a/drivers/mmc/host/sdhci_am654.c
+++ b/drivers/mmc/host/sdhci_am654.c
@@ -158,6 +158,27 @@ static void sdhci_am654_set_power(struct sdhci_host *host, unsigned char mode,
sdhci_set_power_noreg(host, mode, vdd);
}
+static void sdhci_am654_write_b(struct sdhci_host *host, u8 val, int reg)
+{
+ unsigned char timing = host->mmc->ios.timing;
+
+ if (reg == SDHCI_HOST_CONTROL) {
+ switch (timing) {
+ /*
+ * According to the data manual, HISPD bit
+ * should not be set in these speed modes.
+ */
+ case MMC_TIMING_SD_HS:
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_UHS_SDR12:
+ case MMC_TIMING_UHS_SDR25:
+ val &= ~SDHCI_CTRL_HISPD;
+ }
+ }
+
+ writeb(val, host->ioaddr + reg);
+}
+
static struct sdhci_ops sdhci_am654_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
@@ -165,6 +186,7 @@ static struct sdhci_ops sdhci_am654_ops = {
.set_bus_width = sdhci_set_bus_width,
.set_power = sdhci_am654_set_power,
.set_clock = sdhci_am654_set_clock,
+ .write_b = sdhci_am654_write_b,
.reset = sdhci_reset,
};
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 2adb0d24360f..c5ba13fae399 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -4,8 +4,8 @@
*
* TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
*
- * Copyright (C) 2015-17 Renesas Electronics Corporation
- * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2015-19 Renesas Electronics Corporation
+ * Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2007 Ian Molton
* Copyright (C) 2004 Ian Molton
@@ -105,6 +105,8 @@
TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
+#define TMIO_MAX_BLK_SIZE 512
+
struct tmio_mmc_data;
struct tmio_mmc_host;
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 595949f1f001..130b91cb0f8a 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -4,8 +4,8 @@
*
* TC6393XB, TC6391XB, TC6387XB, T7L66XB, ASIC3, SH-Mobile SoCs
*
- * Copyright (C) 2015-17 Renesas Electronics Corporation
- * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2015-19 Renesas Electronics Corporation
+ * Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2017 Horms Solutions, Simon Horman
* Copyright (C) 2011 Guennadi Liakhovetski
* Copyright (C) 2007 Ian Molton
@@ -1186,7 +1186,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
mmc->caps2 |= pdata->capabilities2;
mmc->max_segs = pdata->max_segs ? : 32;
- mmc->max_blk_size = 512;
+ mmc->max_blk_size = TMIO_MAX_BLK_SIZE;
mmc->max_blk_count = pdata->max_blk_count ? :
(PAGE_SIZE / mmc->max_blk_size) * mmc->max_segs;
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index cd8b1b9d4d8a..b11ac2314328 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -1339,7 +1339,7 @@ static int usdhi6_stop_cmd(struct usdhi6_host *host)
host->wait = USDHI6_WAIT_FOR_STOP;
return 0;
}
- /* Unsupported STOP command */
+ /* fall through - Unsupported STOP command. */
default:
dev_err(mmc_dev(host->mmc),
"unsupported stop CMD%d for CMD%d\n",
@@ -1687,7 +1687,7 @@ static void usdhi6_timeout_work(struct work_struct *work)
switch (host->wait) {
default:
dev_err(mmc_dev(host->mmc), "Invalid state %u\n", host->wait);
- /* mrq can be NULL in this actually impossible case */
+ /* fall through - mrq can be NULL, but is impossible. */
case USDHI6_WAIT_FOR_CMD:
usdhi6_error_code(host);
if (mrq)
@@ -1709,10 +1709,7 @@ static void usdhi6_timeout_work(struct work_struct *work)
host->offset, data->blocks, data->blksz, data->sg_len,
sg_dma_len(sg), sg->offset);
usdhi6_sg_unmap(host, true);
- /*
- * If USDHI6_WAIT_FOR_DATA_END times out, we have already unmapped
- * the page
- */
+ /* fall through - page unmapped in USDHI6_WAIT_FOR_DATA_END. */
case USDHI6_WAIT_FOR_DATA_END:
usdhi6_error_code(host);
data->error = -ETIMEDOUT;
diff --git a/include/linux/alcor_pci.h b/include/linux/alcor_pci.h
index da973e8a2da8..4416df597526 100644
--- a/include/linux/alcor_pci.h
+++ b/include/linux/alcor_pci.h
@@ -23,7 +23,7 @@
#define AU6601_BASE_CLOCK 31000000
#define AU6601_MIN_CLOCK 150000
#define AU6601_MAX_CLOCK 208000000
-#define AU6601_MAX_DMA_SEGMENTS 1
+#define AU6601_MAX_DMA_SEGMENTS 64
#define AU6601_MAX_PIO_SEGMENTS 1
#define AU6601_MAX_DMA_BLOCK_SIZE 0x1000
#define AU6601_MAX_PIO_BLOCK_SIZE 0x200