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path: root/drivers/staging/mt7621-mmc/sd.c
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Diffstat (limited to 'drivers/staging/mt7621-mmc/sd.c')
-rw-r--r--drivers/staging/mt7621-mmc/sd.c75
1 files changed, 28 insertions, 47 deletions
diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 0379f9c96f2a..4b26ec896a96 100644
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -38,6 +38,7 @@
#include <linux/dma-mapping.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
+#include <linux/interrupt.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
@@ -216,26 +217,6 @@ static void msdc_tasklet_card(struct work_struct *work)
spin_unlock(&host->lock);
}
-static void msdc_select_clksrc(struct msdc_host *host, unsigned char clksrc)
-{
- u32 val;
-
- BUG_ON(clksrc > 3);
-
- val = readl(host->base + MSDC_CLKSRC_REG);
- if (readl(host->base + MSDC_ECO_VER) >= 4) {
- val &= ~(0x3 << clk_src_bit[host->id]);
- val |= clksrc << clk_src_bit[host->id];
- } else {
- val &= ~0x3; val |= clksrc;
- }
- writel(val, host->base + MSDC_CLKSRC_REG);
-
- host->hclk = hclks[clksrc];
- host->hw->clk_src = clksrc;
-}
-#endif /* end of --- */
-
static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
{
//struct msdc_hw *hw = host->hw;
@@ -318,9 +299,9 @@ static void msdc_abort_data(struct msdc_host *host)
#ifdef CONFIG_PM
/*
- register as callback function of WIFI(combo_sdio_register_pm) .
- can called by msdc_drv_suspend/resume too.
-*/
+ * register as callback function of WIFI(combo_sdio_register_pm) .
+ * can called by msdc_drv_suspend/resume too.
+ */
static void msdc_pm(pm_message_t state, void *data)
{
struct msdc_host *host = (struct msdc_host *)data;
@@ -351,7 +332,6 @@ static void msdc_pm(pm_message_t state, void *data)
host->suspend = 0;
host->pm_state = state;
-
}
}
#endif
@@ -685,7 +665,7 @@ static int msdc_do_request(struct mmc_host *mmc, struct mmc_request *mrq)
if (read) {
if ((host->timeout_ns != data->timeout_ns) ||
- (host->timeout_clks != data->timeout_clks)) {
+ (host->timeout_clks != data->timeout_clks)) {
msdc_set_timeout(host, data->timeout_ns, data->timeout_clks);
}
}
@@ -711,7 +691,8 @@ static int msdc_do_request(struct mmc_host *mmc, struct mmc_request *mrq)
goto done;
/* for read, the data coming too fast, then CRC error
- start DMA no business with CRC. */
+ * start DMA no business with CRC.
+ */
//init_completion(&host->xfer_done);
msdc_dma_start(host);
@@ -794,9 +775,10 @@ static int msdc_tune_cmdrsp(struct msdc_host *host, struct mmc_command *cmd)
u32 skip = 1;
/* ==== don't support 3.0 now ====
- 1: R_SMPL[1]
- 2: PAD_CMD_RESP_RXDLY[26:22]
- ==========================*/
+ * 1: R_SMPL[1]
+ * 2: PAD_CMD_RESP_RXDLY[26:22]
+ * ==========================
+ */
// save the previous tune result
sdr_get_field(host->base + MSDC_IOCON, MSDC_IOCON_RSPL, &orig_rsmpl);
@@ -1188,8 +1170,6 @@ static void msdc_ops_request(struct mmc_host *mmc, struct mmc_request *mrq)
spin_unlock(&host->lock);
mmc_request_done(mmc, mrq);
-
- return;
}
/* called by ops.set_ios */
@@ -1223,19 +1203,19 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
u32 ddr = 0;
#ifdef MT6575_SD_DEBUG
- static char *vdd[] = {
+ static const char * const vdd[] = {
"1.50v", "1.55v", "1.60v", "1.65v", "1.70v", "1.80v", "1.90v",
"2.00v", "2.10v", "2.20v", "2.30v", "2.40v", "2.50v", "2.60v",
"2.70v", "2.80v", "2.90v", "3.00v", "3.10v", "3.20v", "3.30v",
"3.40v", "3.50v", "3.60v"
};
- static char *power_mode[] = {
+ static const char * const power_mode[] = {
"OFF", "UP", "ON"
};
- static char *bus_mode[] = {
+ static const char * const bus_mode[] = {
"UNKNOWN", "OPENDRAIN", "PUSHPULL"
};
- static char *timing[] = {
+ static const char * const timing[] = {
"LEGACY", "MMC_HS", "SD_HS"
};
@@ -1398,7 +1378,7 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
/* command interrupts */
if (cmd && (intsts & cmdsts)) {
if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) ||
- (intsts & MSDC_INT_ACMD19_DONE)) {
+ (intsts & MSDC_INT_ACMD19_DONE)) {
u32 *rsp = &cmd->resp[0];
switch (host->cmd_rsp) {
@@ -1431,13 +1411,13 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
/* mmc irq interrupts */
if (intsts & MSDC_INT_MMCIRQ)
dev_info(mmc_dev(host->mmc), "msdc[%d] MMCIRQ: SDC_CSTS=0x%.8x\r\n",
- host->id, readl(host->base + SDC_CSTS));
+ host->id, readl(host->base + SDC_CSTS));
return IRQ_HANDLED;
}
/*--------------------------------------------------------------------------*/
-/* platform_driver members */
+/* platform_driver members */
/*--------------------------------------------------------------------------*/
/* called by msdc_drv_probe/remove */
static void msdc_enable_cd_irq(struct msdc_host *host, int enable)
@@ -1446,11 +1426,11 @@ static void msdc_enable_cd_irq(struct msdc_host *host, int enable)
/* for sdio, not set */
if ((hw->flags & MSDC_CD_PIN_EN) == 0) {
- /* Pull down card detection pin since it is not avaiable */
+ /* Pull down card detection pin since it is not available */
/*
- if (hw->config_gpio_pin)
- hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
- */
+ * if (hw->config_gpio_pin)
+ * hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
+ */
sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_CDSC);
sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
@@ -1490,7 +1470,6 @@ static void msdc_enable_cd_irq(struct msdc_host *host, int enable)
/* called by msdc_drv_probe */
static void msdc_init_hw(struct msdc_host *host)
{
-
/* Configure to MMC/SD mode */
sdr_set_field(host->base + MSDC_CFG, MSDC_CFG_MODE, MSDC_SDMMC);
@@ -1538,12 +1517,13 @@ static void msdc_init_hw(struct msdc_host *host)
#endif
/* for safety, should clear SDC_CFG.SDIO_INT_DET_EN & set SDC_CFG.SDIO in
- pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only
- set when kernel driver wants to use SDIO bus interrupt */
+ * pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only
+ * set when kernel driver wants to use SDIO bus interrupt
+ */
/* Configure to enable SDIO mode. it's must otherwise sdio cmd5 failed */
sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO);
- /* disable detect SDIO device interupt function */
+ /* disable detect SDIO device interrupt function */
sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
/* eneable SMT for glitch filter */
@@ -1693,7 +1673,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
host->mrq = NULL;
//init_MUTEX(&host->sem); /* we don't need to support multiple threads access */
- mmc_dev(mmc)->dma_mask = NULL;
+ dma_coerce_mask_and_coherent(mmc_dev(mmc), DMA_BIT_MASK(32));
/* using dma_alloc_coherent*/ /* todo: using 1, for all 4 slots */
host->dma.gpd = dma_alloc_coherent(&pdev->dev,
@@ -1797,6 +1777,7 @@ static void msdc_drv_pm(struct platform_device *pdev, pm_message_t state)
if (mmc) {
struct msdc_host *host = mmc_priv(mmc);
+
msdc_pm(state, (void *)host);
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.