Signed-off-by: Yangbo Lu <yangbo.lu@xxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-of-esdhc.c | 105 +++++++++++++++++++++++++-------------
1 file changed, 69 insertions(+), 36 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 22e9111..858d65d 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -28,7 +28,7 @@ static u32 esdhc_readl(struct sdhci_host *host, int reg)
{
u32 ret;
- ret = in_be32(host->ioaddr + reg);
+ ret = sdhci_32bs_readl(host, reg);
/*
* The bit of ADMA flag in eSDHC is not compatible with standard
* SDHC register, so set fake flag SDHCI_CAN_DO_ADMA2 when ADMA is
@@ -40,7 +40,7 @@ static u32 esdhc_readl(struct sdhci_host *host, int reg)
* the verdor version number, oxFE is SDHCI_HOST_VERSION.
*/
if ((reg == SDHCI_CAPABILITIES) && (ret & SDHCI_CAN_DO_ADMA1)) {
- u32 tmp = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
+ u32 tmp = sdhci_32bs_readl(host, SDHCI_SLOT_INT_STATUS);
tmp = (tmp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
if (tmp > VENDOR_V_22)
ret |= SDHCI_CAN_DO_ADMA2;
@@ -56,9 +56,9 @@ static u16 esdhc_readw(struct sdhci_host *host, int reg)
int shift = (reg & 0x2) * 8;
if (unlikely(reg == SDHCI_HOST_VERSION))
- ret = in_be32(host->ioaddr + base) & 0xffff;
+ ret = sdhci_32bs_readl(host, base) & 0xffff;
else
- ret = (in_be32(host->ioaddr + base) >> shift) & 0xffff;
+ ret = (sdhci_32bs_readl(host, base) >> shift) & 0xffff;
return ret;
}
@@ -66,7 +66,10 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg)
{
int base = reg & ~0x3;
int shift = (reg & 0x3) * 8;
- u8 ret = (in_be32(host->ioaddr + base) >> shift) & 0xff;
+ u32 ret;
+ u8 val;
+
+ ret = sdhci_32bs_readl(host, base);
/*
* "DMA select" locates at offset 0x28 in SD specification, but on
@@ -75,16 +78,18 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg)
if (reg == SDHCI_HOST_CONTROL) {
u32 dma_bits;
- dma_bits = in_be32(host->ioaddr + reg);
/* DMA select is 22,23 bits in Protocol Control Register */
- dma_bits = (dma_bits >> 5) & SDHCI_CTRL_DMA_MASK;
+ dma_bits = (ret >> 5) & SDHCI_CTRL_DMA_MASK;
/* fixup the result */
ret &= ~SDHCI_CTRL_DMA_MASK;
ret |= dma_bits;
+ val = (ret & 0xff);
}
- return ret;
+ val = (ret >> shift) & 0xff;
+
+ return val;
}
static void esdhc_writel(struct sdhci_host *host, u32 val, int reg)
@@ -96,11 +101,28 @@ static void esdhc_writel(struct sdhci_host *host, u32 val, int reg)
*/
if (reg == SDHCI_INT_ENABLE)
val |= SDHCI_INT_BLK_GAP;
- sdhci_be32bs_writel(host, val, reg);
+ sdhci_32bs_writel(host, val, reg);
}
static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+ switch (reg) {
+ case SDHCI_TRANSFER_MODE:
+ /*
+ * Postpone this write, we must do it together with a
+ * command write that is down below.
+ */
+ pltfm_host->xfer_mode_shadow = val;
+ return;
+ case SDHCI_COMMAND:
+ sdhci_32bs_writel(host, val << 16 |
+ pltfm_host->xfer_mode_shadow,
+ SDHCI_TRANSFER_MODE);
+ return;
+ }
+
if (reg == SDHCI_BLOCK_SIZE) {
/*
* Two last DMA bits are reserved, and first one is used for
@@ -109,7 +131,7 @@ static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
*/
val &= ~SDHCI_MAKE_BLKSZ(0x7, 0);
}
- sdhci_be32bs_writew(host, val, reg);
+ sdhci_clrsetbits(host, 0xffff, val, reg);
}
static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
@@ -130,16 +152,16 @@ static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
/* DMA select is 22,23 bits in Protocol Control Register */
dma_bits = (val & SDHCI_CTRL_DMA_MASK) << 5;
- clrsetbits_be32(host->ioaddr + reg , SDHCI_CTRL_DMA_MASK << 5,
- dma_bits);
+ sdhci_clrsetbits(host, SDHCI_CTRL_DMA_MASK << 5, dma_bits,
+ SDHCI_HOST_CONTROL);
val &= ~SDHCI_CTRL_DMA_MASK;
- val |= in_be32(host->ioaddr + reg) & SDHCI_CTRL_DMA_MASK;
+ val |= sdhci_32bs_readl(host, reg) & SDHCI_CTRL_DMA_MASK;
}
/* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */
if (reg == SDHCI_HOST_CONTROL)
val &= ~ESDHC_HOST_CONTROL_RES;
- sdhci_be32bs_writeb(host, val, reg);
+ sdhci_clrsetbits(host, 0xff, val, reg);
}
/*
@@ -156,7 +178,7 @@ static void esdhci_of_adma_workaround(struct sdhci_host *host, u32 intmask)
dma_addr_t dmastart;
dma_addr_t dmanow;
- tmp = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
+ tmp = esdhc_readl(host, SDHCI_SLOT_INT_STATUS);
tmp = (tmp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
applicable = (intmask & SDHCI_INT_DATA_END) &&
@@ -174,12 +196,13 @@ static void esdhci_of_adma_workaround(struct sdhci_host *host, u32 intmask)
dmanow = (dmanow & ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) +
SDHCI_DEFAULT_BOUNDARY_SIZE;
host->data->bytes_xfered = dmanow - dmastart;
- sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS);
+ esdhc_writel(host, dmanow, SDHCI_DMA_ADDRESS);
}
static int esdhc_of_enable_dma(struct sdhci_host *host)
{
- setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP);
+ esdhc_writel(host, esdhc_readl(host, ESDHC_DMA_SYSCTL)
+ | ESDHC_DMA_SNOOP, ESDHC_DMA_SYSCTL);
return 0;
}
@@ -245,7 +268,7 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
{
u32 vvn;
- vvn = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
+ vvn = esdhc_readl(host, SDHCI_SLOT_INT_STATUS);
vvn = (vvn & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
if (vvn == VENDOR_V_22)
host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;
@@ -272,8 +295,8 @@ static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
break;
}
- clrsetbits_be32(host->ioaddr + SDHCI_HOST_CONTROL,
- ESDHC_CTRL_BUSWIDTH_MASK, ctrl);
+ sdhci_clrsetbits(host, ESDHC_CTRL_BUSWIDTH_MASK, ctrl,
+ SDHCI_HOST_CONTROL);
}
static void esdhc_reset(struct sdhci_host *host, u8 mask)
@@ -309,7 +332,7 @@ static int esdhc_of_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
- esdhc_proctl = sdhci_be32bs_readl(host, SDHCI_HOST_CONTROL);
+ esdhc_proctl = esdhc_readl(host, SDHCI_HOST_CONTROL);
return sdhci_suspend_host(host);
}
@@ -322,7 +345,7 @@ static int esdhc_of_resume(struct device *dev)
if (ret == 0) {
/* Isn't this already done by sdhci_resume_host() ? --rmk */
esdhc_of_enable_dma(host);
- sdhci_be32bs_writel(host, esdhc_proctl, SDHCI_HOST_CONTROL);
+ esdhc_writel(host, esdhc_proctl, SDHCI_HOST_CONTROL);
}
return ret;
@@ -348,19 +371,18 @@ static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {
.ops = &sdhci_esdhc_ops,
};
-static int sdhci_esdhc_probe(struct platform_device *pdev)
+static void esdhc_get_property(struct platform_device *pdev)
{
- struct sdhci_host *host;
- struct device_node *np;
- int ret;
-
- host = sdhci_pltfm_init(pdev, &sdhci_esdhc_pdata, 0);
- if (IS_ERR(host))
- return PTR_ERR(host);
+ struct device_node *np = pdev->dev.of_node;
+ struct sdhci_host *host = platform_get_drvdata(pdev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
sdhci_get_of_property(pdev);
- np = pdev->dev.of_node;
+ /* call to generic mmc_of_parse to support additional capabilities */
+ mmc_of_parse(host->mmc);
+ mmc_of_parse_voltage(np, &host->ocr_mask);
+
if (of_device_is_compatible(np, "fsl,p2020-esdhc")) {
/*
* Freescale messed up with P2020 as it has a non-standard
@@ -369,13 +391,24 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL;
}
- /* call to generic mmc_of_parse to support additional capabilities */
- ret = mmc_of_parse(host->mmc);
- if (ret)
- goto err;
+ if (!pltfm_host->clock) {
+ pltfm_host->clk = devm_clk_get(&pdev->dev, NULL);
+ pltfm_host->clock = clk_get_rate(pltfm_host->clk);
+ clk_prepare_enable(pltfm_host->clk);
+ }
+}
- mmc_of_parse_voltage(np, &host->ocr_mask);
+static int sdhci_esdhc_probe(struct platform_device *pdev)
+{
+ struct sdhci_host *host;
+ int ret;
+
+
+ host = sdhci_pltfm_init(pdev, &sdhci_esdhc_pdata, 0);
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+ esdhc_get_property(pdev);
ret = sdhci_add_host(host);
if (ret)
goto err;
--
2.1.0.27.g96db324
--
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