[PATCH 1/4] mmc: sdhci-s3c: use the sdhci-pltfm for Samsung-SoC

[Jaehoon Chung <jh80.chung@samsung.com>]

This patch is change to use the sdhci-pltfm.c

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 drivers/mmc/host/sdhci-s3c.c |  218 ++++++++++++++----------------------------
 1 files changed, 71 insertions(+), 147 deletions(-)

diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 1af756e..a651c1e 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -26,6 +26,7 @@
 #include <plat/sdhci.h>
 #include <plat/regs-sdhci.h>
 
+#include "sdhci-pltfm.h"
 #include "sdhci.h"
 
 #define MAX_BUS_CLK	(4)
@@ -41,9 +42,7 @@
  * @clk_bus: The clocks that are available for the SD/MMC bus clock.
  */
 struct sdhci_s3c {
-	struct sdhci_host	*host;
 	struct platform_device	*pdev;
-	struct resource		*ioarea;
 	struct s3c_sdhci_platdata *pdata;
 	unsigned int		cur_clk;
 	int			ext_cd_irq;
@@ -53,11 +52,6 @@ struct sdhci_s3c {
 	struct clk		*clk_bus[MAX_BUS_CLK];
 };
 
-static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
-{
-	return sdhci_priv(host);
-}
-
 /**
  * get_curclk - convert ctrl2 register to clock source number
  * @ctrl2: Control2 register value.
@@ -72,7 +66,8 @@ static u32 get_curclk(u32 ctrl2)
 
 static void sdhci_s3c_check_sclk(struct sdhci_host *host)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_s3c *ourhost = pltfm_host->priv;
 	u32 tmp = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
 
 	if (get_curclk(tmp) != ourhost->cur_clk) {
@@ -92,13 +87,13 @@ static void sdhci_s3c_check_sclk(struct sdhci_host *host)
 */
 static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_s3c *ourhost = pltfm_host->priv;
 	struct clk *busclk;
 	unsigned int rate, max;
 	int clk;
 
 	/* note, a reset will reset the clock source */
-
 	sdhci_s3c_check_sclk(host);
 
 	for (max = 0, clk = 0; clk < MAX_BUS_CLK; clk++) {
@@ -163,7 +158,8 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
 */
 static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_s3c *ourhost = pltfm_host->priv;
 	unsigned int best = UINT_MAX;
 	unsigned int delta;
 	int best_src = 0;
@@ -233,7 +229,8 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
 */
 static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_s3c *ourhost = pltfm_host->priv;
 	unsigned int delta, min = UINT_MAX;
 	int src;
 
@@ -251,27 +248,27 @@ static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
 /* sdhci_cmu_get_max_clk - callback to get maximum clock frequency.*/
 static unsigned int sdhci_cmu_get_max_clock(struct sdhci_host *host)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 
-	return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], UINT_MAX);
+	return clk_round_rate(pltfm_host->clk, UINT_MAX);
 }
 
 /* sdhci_cmu_get_min_clock - callback to get minimal supported clock value. */
 static unsigned int sdhci_cmu_get_min_clock(struct sdhci_host *host)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 
 	/*
 	 * initial clock can be in the frequency range of
 	 * 100KHz-400KHz, so we set it as max value.
 	 */
-	return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], 400000);
+	return clk_round_rate(pltfm_host->clk, 400000);
 }
 
 /* sdhci_cmu_set_clock - callback on clock change.*/
 static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
 {
-	struct sdhci_s3c *ourhost = to_s3c(host);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 
 	/* don't bother if the clock is going off */
 	if (clock == 0)
@@ -279,7 +276,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
 
 	sdhci_s3c_set_clock(host, clock);
 
-	clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
+	clk_set_rate(pltfm_host->clk, clock);
 
 	host->clock = clock;
 }
@@ -382,52 +379,50 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc)
 	}
 }
 
+static struct sdhci_pltfm_data sdhci_s3c_pdata = {
+	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
+		SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_BUSY_IRQ |
+		SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 |
+		SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC |
+		SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+		SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE,
+	.ops	= &sdhci_s3c_ops,
+};
+
 static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 {
 	struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
 	struct device *dev = &pdev->dev;
+	struct sdhci_pltfm_host *pltfm_host;
+	struct sdhci_pltfm_data *pltfm_pdata = &sdhci_s3c_pdata;
 	struct sdhci_host *host;
 	struct sdhci_s3c *sc;
-	struct resource *res;
-	int ret, irq, ptr, clks;
-
-	if (!pdata) {
-		dev_err(dev, "no device data specified\n");
-		return -ENOENT;
-	}
+	int ret, ptr, clks;
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(dev, "no irq specified\n");
-		return irq;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "no memory specified\n");
-		return -ENOENT;
-	}
-
-	host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c));
+	host = sdhci_pltfm_init(pdev, pltfm_pdata);
 	if (IS_ERR(host)) {
 		dev_err(dev, "sdhci_alloc_host() failed\n");
 		return PTR_ERR(host);
 	}
 
-	sc = sdhci_priv(host);
+	sc = kzalloc(sizeof(struct sdhci_s3c), GFP_KERNEL);
+	if (!sc) {
+		ret = -ENOMEM;
+		goto err_alloc_host;
+	}
+
+	pltfm_host = sdhci_priv(host);
+	pltfm_host->priv = sc;
 
-	sc->host = host;
 	sc->pdev = pdev;
-	sc->pdata = pdata;
+	sc->pdata = pdev->dev.platform_data;
 	sc->ext_cd_gpio = -1; /* invalid gpio number */
 
-	platform_set_drvdata(pdev, host);
-
 	sc->clk_io = clk_get(dev, "hsmmc");
 	if (IS_ERR(sc->clk_io)) {
 		dev_err(dev, "failed to get io clock\n");
 		ret = PTR_ERR(sc->clk_io);
-		goto err_io_clk;
+		goto err_alloc_host;
 	}
 
 	/* enable the local io clock and keep it running for the moment. */
@@ -439,9 +434,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 
 		snprintf(name, 14, "mmc_busclk.%d", ptr);
 		clk = clk_get(dev, name);
-		if (IS_ERR(clk)) {
+		if (IS_ERR(clk))
 			continue;
-		}
 
 		clks++;
 		sc->clk_bus[ptr] = clk;
@@ -450,7 +444,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 		 * save current clock index to know which clock bus
 		 * is used later in overriding functions.
 		 */
-		sc->cur_clk = ptr;
+		pltfm_host->clk = clk;
 
 		clk_enable(clk);
 
@@ -464,53 +458,17 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 		goto err_no_busclks;
 	}
 
-	sc->ioarea = request_mem_region(res->start, resource_size(res),
-					mmc_hostname(host->mmc));
-	if (!sc->ioarea) {
-		dev_err(dev, "failed to reserve register area\n");
-		ret = -ENXIO;
-		goto err_req_regs;
-	}
-
-	host->ioaddr = ioremap_nocache(res->start, resource_size(res));
-	if (!host->ioaddr) {
-		dev_err(dev, "failed to map registers\n");
-		ret = -ENXIO;
-		goto err_req_regs;
-	}
-
 	/* Ensure we have minimal gpio selected CMD/CLK/Detect */
-	if (pdata->cfg_gpio)
-		pdata->cfg_gpio(pdev, pdata->max_width);
-
-	host->hw_name = "samsung-hsmmc";
-	host->ops = &sdhci_s3c_ops;
-	host->quirks = 0;
-	host->irq = irq;
-
-	/* Setup quirks for the controller */
-	host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
-	host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
+	if (sc->pdata->cfg_gpio)
+		sc->pdata->cfg_gpio(pdev, sc->pdata->max_width);
 
 #ifndef CONFIG_MMC_SDHCI_S3C_DMA
-
 	/* we currently see overruns on errors, so disable the SDMA
 	 * support as well. */
 	host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
 
 #endif /* CONFIG_MMC_SDHCI_S3C_DMA */
 
-	/* It seems we do not get an DATA transfer complete on non-busy
-	 * transfers, not sure if this is a problem with this specific
-	 * SDHCI block, or a missing configuration that needs to be set. */
-	host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ;
-
-	/* This host supports the Auto CMD12 */
-	host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
-
-	/* Samsung SoCs need BROKEN_ADMA_ZEROLEN_DESC */
-	host->quirks |= SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC;
-
 	if (pdata->cd_type == S3C_SDHCI_CD_NONE ||
 	    pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
 		host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
@@ -518,17 +476,14 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
 		host->mmc->caps = MMC_CAP_NONREMOVABLE;
 
+	/* It supports additional host capabilities if needed */
 	if (pdata->host_caps)
-		host->mmc->caps |= pdata->host_caps;
-
-	if (pdata->pm_caps)
-		host->mmc->pm_caps |= pdata->pm_caps;
+		host->mmc->caps |= sc->pdata->host_caps;
 
-	host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
-			 SDHCI_QUIRK_32BIT_DMA_SIZE);
+	host->mmc->caps2 |= MMC_CAP2_BROKEN_VOLTAGE;
 
-	/* HSMMC on Samsung SoCs uses SDCLK as timeout clock */
-	host->quirks |= SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK;
+	if (pdata->pm_caps)
+		host->mmc->pm_caps |= sc->pdata->pm_caps;
 
 	/*
 	 * If controller does not have internal clock divider,
@@ -540,10 +495,6 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 		sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
 	}
 
-	/* It supports additional host capabilities if needed */
-	if (pdata->host_caps)
-		host->mmc->caps |= pdata->host_caps;
-
 	ret = sdhci_add_host(host);
 	if (ret) {
 		dev_err(dev, "sdhci_add_host() failed\n");
@@ -561,24 +512,21 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 
 	return 0;
 
- err_add_host:
-	release_resource(sc->ioarea);
-	kfree(sc->ioarea);
-
- err_req_regs:
+err_add_host:
 	for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
 		if (sc->clk_bus[ptr]) {
 			clk_disable(sc->clk_bus[ptr]);
 			clk_put(sc->clk_bus[ptr]);
 		}
 	}
-
- err_no_busclks:
+err_no_busclks:
 	clk_disable(sc->clk_io);
 	clk_put(sc->clk_io);
 
- err_io_clk:
-	sdhci_free_host(host);
+	kfree(sc);
+err_alloc_host:
+	sdhci_pltfm_free(pdev);
+	dev_err(&pdev->dev, "%s failed %d\n", __func__, ret);
 
 	return ret;
 }
@@ -587,8 +535,9 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 {
 	struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
 	struct sdhci_host *host =  platform_get_drvdata(pdev);
-	struct sdhci_s3c *sc = sdhci_priv(host);
-	int ptr;
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_s3c *sc = pltfm_host->priv;
+	int ptr, ret;
 
 	if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_cleanup)
 		pdata->ext_cd_cleanup(&sdhci_s3c_notify_change);
@@ -599,9 +548,9 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 	if (gpio_is_valid(sc->ext_cd_gpio))
 		gpio_free(sc->ext_cd_gpio);
 
-	sdhci_remove_host(host, 1);
+	ret = sdhci_pltfm_unregister(pdev);
 
-	for (ptr = 0; ptr < 3; ptr++) {
+	for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
 		if (sc->clk_bus[ptr]) {
 			clk_disable(sc->clk_bus[ptr]);
 			clk_put(sc->clk_bus[ptr]);
@@ -610,54 +559,29 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 	clk_disable(sc->clk_io);
 	clk_put(sc->clk_io);
 
-	iounmap(host->ioaddr);
-	release_resource(sc->ioarea);
-	kfree(sc->ioarea);
-
-	sdhci_free_host(host);
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int sdhci_s3c_suspend(struct device *dev)
-{
-	struct sdhci_host *host = dev_get_drvdata(dev);
-
-	return sdhci_suspend_host(host);
-}
-
-static int sdhci_s3c_resume(struct device *dev)
-{
-	struct sdhci_host *host = dev_get_drvdata(dev);
-
-	return sdhci_resume_host(host);
+	return ret;
 }
 
-static const struct dev_pm_ops sdhci_s3c_pmops = {
-	.suspend	= sdhci_s3c_suspend,
-	.resume		= sdhci_s3c_resume,
-};
-
-#define SDHCI_S3C_PMOPS (&sdhci_s3c_pmops)
-
-#else
-#define SDHCI_S3C_PMOPS NULL
-#endif
-
 static struct platform_driver sdhci_s3c_driver = {
 	.probe		= sdhci_s3c_probe,
 	.remove		= __devexit_p(sdhci_s3c_remove),
 	.driver		= {
 		.owner	= THIS_MODULE,
 		.name	= "s3c-sdhci",
-		.pm	= SDHCI_S3C_PMOPS,
 	},
 };
 
-module_platform_driver(sdhci_s3c_driver);
+static int __init sdhci_s3c_init(void)
+{
+	return platform_driver_register(&sdhci_s3c_driver);
+}
+module_init(sdhci_s3c_init);
+
+static void __exit sdhci_s3c_exit(void)
+{
+	platform_driver_unregister(&sdhci_s3c_driver);
+}
+module_exit(sdhci_s3c_exit);
 
 MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue");
 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");