mci: sdhci: Get rid of many register ops

Most SDHCI drivers use standard readl/writel to access registers.
Implement these in the common register accessor functions so that
drivers only to overwrite them when they want to do something different.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20210607104411.23071-12-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

8 files changed, 51 insertions, 167 deletions

diff --git a/drivers/mci/arasan-sdhci.c b/drivers/mci/arasan-sdhci.c
index 7924e48832..dd5ad9d69b 100644
--- a/drivers/mci/arasan-sdhci.c
+++ b/drivers/mci/arasan-sdhci.c
@@ -33,7 +33,6 @@
 struct arasan_sdhci_host {
 	struct mci_host		mci;
 	struct sdhci		sdhci;
-	void __iomem		*ioaddr;
 	unsigned int		quirks; /* Arasan deviations from spec */
 /* Controller does not have CD wired and will not function normally without */
 #define SDHCI_ARASAN_QUIRK_FORCE_CDTEST		BIT(0)
@@ -53,48 +52,6 @@ struct arasan_sdhci_host *sdhci_to_arasan(struct sdhci *sdhci)
 	return container_of(sdhci, struct arasan_sdhci_host, sdhci);
 }
 
-static void arasan_sdhci_writel(struct sdhci *sdhci, int reg, u32 val)
-{
-	struct arasan_sdhci_host *p = sdhci_to_arasan(sdhci);
-
-	writel(val, p->ioaddr + reg);
-}
-
-static void arasan_sdhci_writew(struct sdhci *sdhci, int reg, u16 val)
-{
-	struct arasan_sdhci_host *p = sdhci_to_arasan(sdhci);
-
-	writew(val, p->ioaddr + reg);
-}
-
-static void arasan_sdhci_writeb(struct sdhci *sdhci, int reg, u8 val)
-{
-	struct arasan_sdhci_host *p = sdhci_to_arasan(sdhci);
-
-	writeb(val, p->ioaddr + reg);
-}
-
-static u32 arasan_sdhci_readl(struct sdhci *sdhci, int reg)
-{
-	struct arasan_sdhci_host *p = sdhci_to_arasan(sdhci);
-
-	return readl(p->ioaddr + reg);
-}
-
-static u16 arasan_sdhci_readw(struct sdhci *sdhci, int reg)
-{
-	struct arasan_sdhci_host *p = sdhci_to_arasan(sdhci);
-
-	return readw(p->ioaddr + reg);
-}
-
-static u8 arasan_sdhci_readb(struct sdhci *sdhci, int reg)
-{
-	struct arasan_sdhci_host *p = sdhci_to_arasan(sdhci);
-
-	return readb(p->ioaddr + reg);
-}
-
 static int arasan_sdhci_card_present(struct mci_host *mci)
 {
 	struct arasan_sdhci_host *host = to_arasan_sdhci_host(mci);
@@ -285,7 +242,6 @@ static int arasan_sdhci_probe(struct device_d *dev)
 	iores = dev_request_mem_resource(dev, 0);
 	if (IS_ERR(iores))
 		return PTR_ERR(iores);
-	arasan_sdhci->ioaddr = IOMEM(iores->start);
 
 	clk_ahb = clk_get(dev, "clk_ahb");
 	if (IS_ERR(clk_ahb)) {
@@ -317,12 +273,7 @@ static int arasan_sdhci_probe(struct device_d *dev)
 	if (of_property_read_bool(np, "no-1-8-v"))
 		arasan_sdhci->quirks |= SDHCI_ARASAN_QUIRK_NO_1_8_V;
 
-	arasan_sdhci->sdhci.read32 = arasan_sdhci_readl;
-	arasan_sdhci->sdhci.read16 = arasan_sdhci_readw;
-	arasan_sdhci->sdhci.read8 = arasan_sdhci_readb;
-	arasan_sdhci->sdhci.write32 = arasan_sdhci_writel;
-	arasan_sdhci->sdhci.write16 = arasan_sdhci_writew;
-	arasan_sdhci->sdhci.write8 = arasan_sdhci_writeb;
+	arasan_sdhci->sdhci.base = IOMEM(iores->start);
 	arasan_sdhci->sdhci.mci = mci;
 	mci->send_cmd = arasan_sdhci_send_cmd;
 	mci->set_ios = arasan_sdhci_set_ios;
diff --git a/drivers/mci/atmel-sdhci-common.c b/drivers/mci/atmel-sdhci-common.c
index 242e0084b9..9d78c59e95 100644
--- a/drivers/mci/atmel-sdhci-common.c
+++ b/drivers/mci/atmel-sdhci-common.c
@@ -378,43 +378,7 @@ int at91_sdhci_init(struct at91_sdhci *host, u32 maxclk,
 	return 0;
 }
 
-static u32 at91_sdhci_read32(struct sdhci *sdhci, int reg)
-{
-	return readl(to_priv(sdhci)->base + reg);
-}
-
-static void at91_sdhci_write32(struct sdhci *sdhci, int reg, u32 value)
-{
-	writel(value, to_priv(sdhci)->base + reg);
-}
-
-static u16 at91_sdhci_read16(struct sdhci *sdhci, int reg)
-{
-	return readw(to_priv(sdhci)->base + reg);
-}
-
-static void at91_sdhci_write16(struct sdhci *sdhci, int reg, u16 value)
-{
-	writew(value, to_priv(sdhci)->base + reg);
-}
-
-static u8 at91_sdhci_read8(struct sdhci *sdhci, int reg)
-{
-	return readb(to_priv(sdhci)->base + reg);
-}
-
-static void at91_sdhci_write8(struct sdhci *sdhci, int reg, u8 value)
-{
-	writeb(value, to_priv(sdhci)->base + reg);
-}
-
 void at91_sdhci_mmio_init(struct at91_sdhci *host, void __iomem *base)
 {
-	host->base = base;
-	host->sdhci.read8 = at91_sdhci_read8;
-	host->sdhci.read16 = at91_sdhci_read16;
-	host->sdhci.read32 = at91_sdhci_read32;
-	host->sdhci.write8 = at91_sdhci_write8;
-	host->sdhci.write16 = at91_sdhci_write16;
-	host->sdhci.write32 = at91_sdhci_write32;
+	host->sdhci.base = base;
 }
diff --git a/drivers/mci/dove-sdhci.c b/drivers/mci/dove-sdhci.c
index f4f8dabba1..e6ac769bde 100644
--- a/drivers/mci/dove-sdhci.c
+++ b/drivers/mci/dove-sdhci.c
@@ -20,55 +20,12 @@
 
 struct dove_sdhci {
 	struct mci_host mci;
-	void __iomem *base;
 	struct sdhci sdhci;
 };
 
 #define priv_from_mci_host(h)	\
 	container_of(h, struct dove_sdhci, mci);
 
-static void dove_sdhci_writel(struct sdhci *sdhci, int reg, u32 val)
-{
-	struct dove_sdhci *p = container_of(sdhci, struct dove_sdhci, sdhci);
-
-	writel(val, p->base + reg);
-}
-
-static void dove_sdhci_writew(struct sdhci *sdhci, int reg, u16 val)
-{
-	struct dove_sdhci *p = container_of(sdhci, struct dove_sdhci, sdhci);
-
-	writew(val, p->base + reg);
-}
-
-static void dove_sdhci_writeb(struct sdhci *sdhci, int reg, u8 val)
-{
-	struct dove_sdhci *p = container_of(sdhci, struct dove_sdhci, sdhci);
-
-	writeb(val, p->base + reg);
-}
-
-static u32 dove_sdhci_readl(struct sdhci *sdhci, int reg)
-{
-	struct dove_sdhci *p = container_of(sdhci, struct dove_sdhci, sdhci);
-
-	return readl(p->base + reg);
-}
-
-static u16 dove_sdhci_readw(struct sdhci *sdhci, int reg)
-{
-	struct dove_sdhci *p = container_of(sdhci, struct dove_sdhci, sdhci);
-
-	return readw(p->base + reg);
-}
-
-static u8 dove_sdhci_readb(struct sdhci *sdhci, int reg)
-{
-	struct dove_sdhci *p = container_of(sdhci, struct dove_sdhci, sdhci);
-
-	return readb(p->base + reg);
-}
-
 static int dove_sdhci_wait_for_done(struct dove_sdhci *host, u16 mask)
 {
 	u16 status;
@@ -320,7 +277,7 @@ static int dove_sdhci_probe(struct device_d *dev)
 	int ret;
 
 	host = xzalloc(sizeof(*host));
-	host->base = dev_request_mem_region(dev, 0);
+	host->sdhci.base = dev_request_mem_region(dev, 0);
 	host->mci.max_req_size = 0x8000;
 	host->mci.hw_dev = dev;
 	host->mci.send_cmd = dove_sdhci_mci_send_cmd;
@@ -328,12 +285,6 @@ static int dove_sdhci_probe(struct device_d *dev)
 	host->mci.init = dove_sdhci_mci_init;
 	host->mci.f_max = 50000000;
 	host->mci.f_min = host->mci.f_max / 256;
-	host->sdhci.read32 = dove_sdhci_readl;
-	host->sdhci.read16 = dove_sdhci_readw;
-	host->sdhci.read8 = dove_sdhci_readb;
-	host->sdhci.write32 = dove_sdhci_writel;
-	host->sdhci.write16 = dove_sdhci_writew;
-	host->sdhci.write8 = dove_sdhci_writeb;
 
 	dove_sdhci_set_mci_caps(host);
 
diff --git a/drivers/mci/imx-esdhc-common.c b/drivers/mci/imx-esdhc-common.c
index c9d589468f..7980278801 100644
--- a/drivers/mci/imx-esdhc-common.c
+++ b/drivers/mci/imx-esdhc-common.c
@@ -16,42 +16,41 @@ struct fsl_esdhc_dma_transfer {
 	enum dma_data_direction dir;
 };
 
-static u32 esdhc_op_read32_le(struct sdhci *sdhci, int reg)
+static u32 esdhc_op_read32_be(struct sdhci *sdhci, int reg)
 {
 	struct fsl_esdhc_host *host = sdhci_to_esdhc(sdhci);
 
-	return readl(host->regs + reg);
+	return in_be32(host->sdhci.base + reg);
 }
 
-static u32 esdhc_op_read32_be(struct sdhci *sdhci, int reg)
+static void esdhc_op_write32_be(struct sdhci *sdhci, int reg, u32 val)
 {
 	struct fsl_esdhc_host *host = sdhci_to_esdhc(sdhci);
 
-	return in_be32(host->regs + reg);
+	out_be32(host->sdhci.base + reg, val);
 }
 
-static void esdhc_op_write32_le(struct sdhci *sdhci, int reg, u32 val)
+static u16 esdhc_op_read16_be(struct sdhci *sdhci, int reg)
 {
 	struct fsl_esdhc_host *host = sdhci_to_esdhc(sdhci);
 
-	writel(val, host->regs + reg);
+	return in_be16(host->sdhci.base + reg);
 }
 
-static void esdhc_op_write32_be(struct sdhci *sdhci, int reg, u32 val)
+static void esdhc_op_write16_be(struct sdhci *sdhci, int reg, u16 val)
 {
 	struct fsl_esdhc_host *host = sdhci_to_esdhc(sdhci);
 
-	out_be32(host->regs + reg, val);
+	out_be16(host->sdhci.base + reg, val);
 }
 
 void esdhc_populate_sdhci(struct fsl_esdhc_host *host)
 {
 	if (host->socdata->flags & ESDHC_FLAG_BIGENDIAN) {
+		host->sdhci.read16 = esdhc_op_read16_be;
+		host->sdhci.write16 = esdhc_op_write16_be;
 		host->sdhci.read32 = esdhc_op_read32_be;
 		host->sdhci.write32 = esdhc_op_write32_be;
-	} else {
-		host->sdhci.read32 = esdhc_op_read32_le;
-		host->sdhci.write32 = esdhc_op_write32_le;
 	}
 }
 
diff --git a/drivers/mci/imx-esdhc-pbl.c b/drivers/mci/imx-esdhc-pbl.c
index c3a8b377e2..d7136f5492 100644
--- a/drivers/mci/imx-esdhc-pbl.c
+++ b/drivers/mci/imx-esdhc-pbl.c
@@ -200,14 +200,14 @@ static int imx8m_esdhc_init(struct fsl_esdhc_host *host,
 {
 	switch (instance) {
 	case 0:
-		host->regs = IOMEM(MX8M_USDHC1_BASE_ADDR);
+		host->sdhci.base = IOMEM(MX8M_USDHC1_BASE_ADDR);
 		break;
 	case 1:
-		host->regs = IOMEM(MX8M_USDHC2_BASE_ADDR);
+		host->sdhci.base = IOMEM(MX8M_USDHC2_BASE_ADDR);
 		break;
 	case 2:
 		/* Only exists on i.MX8MM, not on i.MX8MQ */
-		host->regs = IOMEM(MX8MM_USDHC3_BASE_ADDR);
+		host->sdhci.base = IOMEM(MX8MM_USDHC3_BASE_ADDR);
 		break;
 	default:
 		return -EINVAL;
@@ -237,16 +237,16 @@ int imx6_esdhc_start_image(int instance)
 
 	switch (instance) {
 	case 0:
-		host.regs = IOMEM(MX6_USDHC1_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX6_USDHC1_BASE_ADDR);
 		break;
 	case 1:
-		host.regs = IOMEM(MX6_USDHC2_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX6_USDHC2_BASE_ADDR);
 		break;
 	case 2:
-		host.regs = IOMEM(MX6_USDHC3_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX6_USDHC3_BASE_ADDR);
 		break;
 	case 3:
-		host.regs = IOMEM(MX6_USDHC4_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX6_USDHC4_BASE_ADDR);
 		break;
 	default:
 		return -EINVAL;
@@ -276,13 +276,13 @@ int imx7_esdhc_start_image(int instance)
 
 	switch (instance) {
 	case 0:
-		host.regs = IOMEM(MX7_USDHC1_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX7_USDHC1_BASE_ADDR);
 		break;
 	case 1:
-		host.regs = IOMEM(MX7_USDHC2_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX7_USDHC2_BASE_ADDR);
 		break;
 	case 2:
-		host.regs = IOMEM(MX7_USDHC3_BASE_ADDR);
+		host.sdhci.base = IOMEM(MX7_USDHC3_BASE_ADDR);
 		break;
 	default:
 		return -EINVAL;
@@ -375,7 +375,7 @@ int ls1046a_esdhc_start_image(unsigned long r0, unsigned long r1, unsigned long
 		.flags = ESDHC_FLAG_BIGENDIAN,
 	};
 	struct fsl_esdhc_host host = {
-		.regs = IOMEM(0x01560000),
+		.sdhci.base = IOMEM(0x01560000),
 		.socdata = &data,
 	};
 	unsigned long sdram = 0x80000000;
diff --git a/drivers/mci/imx-esdhc.c b/drivers/mci/imx-esdhc.c
index 12e98ce26a..5a664ce4c3 100644
--- a/drivers/mci/imx-esdhc.c
+++ b/drivers/mci/imx-esdhc.c
@@ -264,7 +264,7 @@ static int fsl_esdhc_probe(struct device_d *dev)
 		ret = PTR_ERR(iores);
 		goto err_clk_disable;
 	}
-	host->regs = IOMEM(iores->start);
+	host->sdhci.base = IOMEM(iores->start);
 
 	esdhc_populate_sdhci(host);
 
diff --git a/drivers/mci/imx-esdhc.h b/drivers/mci/imx-esdhc.h
index 0de1e72e7b..f1685eac06 100644
--- a/drivers/mci/imx-esdhc.h
+++ b/drivers/mci/imx-esdhc.h
@@ -101,7 +101,6 @@ struct fsl_esdhc_host {
 	struct mci_host		mci;
 	struct clk		*clk;
 	struct device_d		*dev;
-	void __iomem		*regs;
 	const struct esdhc_soc_data *socdata;
 	struct sdhci	sdhci;
 };
diff --git a/drivers/mci/sdhci.h b/drivers/mci/sdhci.h
index 3e505c5b15..0cdd558565 100644
--- a/drivers/mci/sdhci.h
+++ b/drivers/mci/sdhci.h
@@ -184,6 +184,8 @@ struct sdhci {
 	void (*write16)(struct sdhci *host, int reg, u16 val);
 	void (*write8)(struct sdhci *host, int reg, u8 val);
 
+	void __iomem *base;
+
 	int max_clk; /* Max possible freq (Hz) */
 	int clk_mul; /* Clock Muliplier value */
 
@@ -205,32 +207,50 @@ struct sdhci {
 
 static inline u32 sdhci_read32(struct sdhci *host, int reg)
 {
-	return host->read32(host, reg);
+	if (host->read32)
+		return host->read32(host, reg);
+	else
+		return readl(host->base + reg);
 }
 
 static inline u32 sdhci_read16(struct sdhci *host, int reg)
 {
-	return host->read16(host, reg);
+	if (host->read16)
+		return host->read16(host, reg);
+	else
+		return readw(host->base + reg);
 }
 
 static inline u32 sdhci_read8(struct sdhci *host, int reg)
 {
-	return host->read8(host, reg);
+	if (host->read8)
+		return host->read8(host, reg);
+	else
+		return readb(host->base + reg);
 }
 
 static inline void sdhci_write32(struct sdhci *host, int reg, u32 val)
 {
-	host->write32(host, reg, val);
+	if (host->write32)
+		host->write32(host, reg, val);
+	else
+		writel(val, host->base + reg);
 }
 
 static inline void sdhci_write16(struct sdhci *host, int reg, u32 val)
 {
-	host->write16(host, reg, val);
+	if (host->write16)
+		host->write16(host, reg, val);
+	else
+		writew(val, host->base + reg);
 }
 
 static inline void sdhci_write8(struct sdhci *host, int reg, u32 val)
 {
-	host->write8(host, reg, val);
+	if (host->write8)
+		host->write8(host, reg, val);
+	else
+		writeb(val, host->base + reg);
 }
 
 void sdhci_read_response(struct sdhci *host, struct mci_cmd *cmd);