aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mmc/host/sdhci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
-rw-r--r--drivers/mmc/host/sdhci.c94
1 files changed, 54 insertions, 40 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index ecd0d4350e8a..0d5fcca18c9e 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -897,8 +897,8 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
sdhci_set_transfer_irqs(host);
/* Set the DMA boundary value and block size */
- sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
- data->blksz), SDHCI_BLOCK_SIZE);
+ sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),
+ SDHCI_BLOCK_SIZE);
sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
}
@@ -1173,24 +1173,35 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
}
EXPORT_SYMBOL_GPL(sdhci_send_command);
+static void sdhci_read_rsp_136(struct sdhci_host *host, struct mmc_command *cmd)
+{
+ int i, reg;
+
+ for (i = 0; i < 4; i++) {
+ reg = SDHCI_RESPONSE + (3 - i) * 4;
+ cmd->resp[i] = sdhci_readl(host, reg);
+ }
+
+ if (host->quirks2 & SDHCI_QUIRK2_RSP_136_HAS_CRC)
+ return;
+
+ /* CRC is stripped so we need to do some shifting */
+ for (i = 0; i < 4; i++) {
+ cmd->resp[i] <<= 8;
+ if (i != 3)
+ cmd->resp[i] |= cmd->resp[i + 1] >> 24;
+ }
+}
+
static void sdhci_finish_command(struct sdhci_host *host)
{
struct mmc_command *cmd = host->cmd;
- int i;
host->cmd = NULL;
if (cmd->flags & MMC_RSP_PRESENT) {
if (cmd->flags & MMC_RSP_136) {
- /* CRC is stripped so we need to do some shifting. */
- for (i = 0;i < 4;i++) {
- cmd->resp[i] = sdhci_readl(host,
- SDHCI_RESPONSE + (3-i)*4) << 8;
- if (i != 3)
- cmd->resp[i] |=
- sdhci_readb(host,
- SDHCI_RESPONSE + (3-i)*4-1);
- }
+ sdhci_read_rsp_136(host, cmd);
} else {
cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE);
}
@@ -1544,10 +1555,9 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width)
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
if (width == MMC_BUS_WIDTH_8) {
ctrl &= ~SDHCI_CTRL_4BITBUS;
- if (host->version >= SDHCI_SPEC_300)
- ctrl |= SDHCI_CTRL_8BITBUS;
+ ctrl |= SDHCI_CTRL_8BITBUS;
} else {
- if (host->version >= SDHCI_SPEC_300)
+ if (host->mmc->caps & MMC_CAP_8_BIT_DATA)
ctrl &= ~SDHCI_CTRL_8BITBUS;
if (width == MMC_BUS_WIDTH_4)
ctrl |= SDHCI_CTRL_4BITBUS;
@@ -1641,19 +1651,20 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
- if ((ios->timing == MMC_TIMING_SD_HS ||
- ios->timing == MMC_TIMING_MMC_HS ||
- ios->timing == MMC_TIMING_MMC_HS400 ||
- ios->timing == MMC_TIMING_MMC_HS200 ||
- ios->timing == MMC_TIMING_MMC_DDR52 ||
- ios->timing == MMC_TIMING_UHS_SDR50 ||
- ios->timing == MMC_TIMING_UHS_SDR104 ||
- ios->timing == MMC_TIMING_UHS_DDR50 ||
- ios->timing == MMC_TIMING_UHS_SDR25)
- && !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT))
- ctrl |= SDHCI_CTRL_HISPD;
- else
- ctrl &= ~SDHCI_CTRL_HISPD;
+ if (!(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) {
+ if (ios->timing == MMC_TIMING_SD_HS ||
+ ios->timing == MMC_TIMING_MMC_HS ||
+ ios->timing == MMC_TIMING_MMC_HS400 ||
+ ios->timing == MMC_TIMING_MMC_HS200 ||
+ ios->timing == MMC_TIMING_MMC_DDR52 ||
+ ios->timing == MMC_TIMING_UHS_SDR50 ||
+ ios->timing == MMC_TIMING_UHS_SDR104 ||
+ ios->timing == MMC_TIMING_UHS_DDR50 ||
+ ios->timing == MMC_TIMING_UHS_SDR25)
+ ctrl |= SDHCI_CTRL_HISPD;
+ else
+ ctrl &= ~SDHCI_CTRL_HISPD;
+ }
if (host->version >= SDHCI_SPEC_300) {
u16 clk, ctrl_2;
@@ -2037,6 +2048,7 @@ static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
struct mmc_command cmd = {};
struct mmc_request mrq = {};
unsigned long flags;
+ u32 b = host->sdma_boundary;
spin_lock_irqsave(&host->lock, flags);
@@ -2052,9 +2064,9 @@ static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
*/
if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200 &&
mmc->ios.bus_width == MMC_BUS_WIDTH_8)
- sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128), SDHCI_BLOCK_SIZE);
+ sdhci_writew(host, SDHCI_MAKE_BLKSZ(b, 128), SDHCI_BLOCK_SIZE);
else
- sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), SDHCI_BLOCK_SIZE);
+ sdhci_writew(host, SDHCI_MAKE_BLKSZ(b, 64), SDHCI_BLOCK_SIZE);
/*
* The tuning block is sent by the card to the host controller.
@@ -2502,7 +2514,6 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
sdhci_finish_command(host);
}
-#ifdef CONFIG_MMC_DEBUG
static void sdhci_adma_show_error(struct sdhci_host *host)
{
void *desc = host->adma_table;
@@ -2530,9 +2541,6 @@ static void sdhci_adma_show_error(struct sdhci_host *host)
break;
}
}
-#else
-static void sdhci_adma_show_error(struct sdhci_host *host) { }
-#endif
static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
{
@@ -2938,7 +2946,8 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
sdhci_init(host, 0);
- if (mmc->ios.power_mode != MMC_POWER_UNDEFINED) {
+ if (mmc->ios.power_mode != MMC_POWER_UNDEFINED &&
+ mmc->ios.power_mode != MMC_POWER_OFF) {
/* Force clock and power re-program */
host->pwr = 0;
host->clock = 0;
@@ -2998,7 +3007,7 @@ void sdhci_cqe_enable(struct mmc_host *mmc)
ctrl |= SDHCI_CTRL_ADMA32;
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
- sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, 512),
+ sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, 512),
SDHCI_BLOCK_SIZE);
/* Set maximum timeout */
@@ -3119,6 +3128,8 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev,
host->tuning_delay = -1;
+ host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG;
+
return host;
}
@@ -3230,6 +3241,13 @@ int sdhci_setup_host(struct sdhci_host *host)
if (ret == -EPROBE_DEFER)
return ret;
+ DBG("Version: 0x%08x | Present: 0x%08x\n",
+ sdhci_readw(host, SDHCI_HOST_VERSION),
+ sdhci_readl(host, SDHCI_PRESENT_STATE));
+ DBG("Caps: 0x%08x | Caps_1: 0x%08x\n",
+ sdhci_readl(host, SDHCI_CAPABILITIES),
+ sdhci_readl(host, SDHCI_CAPABILITIES_1));
+
sdhci_read_caps(host);
override_timeout_clk = host->timeout_clk;
@@ -3747,10 +3765,6 @@ int __sdhci_add_host(struct sdhci_host *host)
goto untasklet;
}
-#ifdef CONFIG_MMC_DEBUG
- sdhci_dumpregs(host);
-#endif
-
ret = sdhci_led_register(host);
if (ret) {
pr_err("%s: Failed to register LED device: %d\n",
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.