s3cmci: change GPIO to gpiolib from S3C24XX specific calls

Move to using gpiolib to access the card detect and write protect GPIO
lines instead of using the platform speicifc s3c2410_gpio calls.

Also ensure that the card lines are claimed the same way to avoid overlap
with any other drivers.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 20ed46c..63d211b 100644 (file)
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -1047,7 +1047,7 @@ static int s3cmci_card_present(struct mmc_host *mmc)
        if (pdata->gpio_detect == 0)
                return -ENOSYS;
 
-       ret = s3c2410_gpio_getpin(pdata->gpio_detect) ? 0 : 1;
+       ret = gpio_get_value(pdata->gpio_detect) ? 0 : 1;
        return ret ^ pdata->detect_invert;
 }
 
@@ -1102,12 +1102,12 @@ static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
        switch (ios->power_mode) {
        case MMC_POWER_ON:
        case MMC_POWER_UP:
-               s3c2410_gpio_cfgpin(S3C2410_GPE5, S3C2410_GPE5_SDCLK);
-               s3c2410_gpio_cfgpin(S3C2410_GPE6, S3C2410_GPE6_SDCMD);
-               s3c2410_gpio_cfgpin(S3C2410_GPE7, S3C2410_GPE7_SDDAT0);
-               s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
-               s3c2410_gpio_cfgpin(S3C2410_GPE9, S3C2410_GPE9_SDDAT2);
-               s3c2410_gpio_cfgpin(S3C2410_GPE10, S3C2410_GPE10_SDDAT3);
+               s3c2410_gpio_cfgpin(S3C2410_GPE(5), S3C2410_GPE5_SDCLK);
+               s3c2410_gpio_cfgpin(S3C2410_GPE(6), S3C2410_GPE6_SDCMD);
+               s3c2410_gpio_cfgpin(S3C2410_GPE(7), S3C2410_GPE7_SDDAT0);
+               s3c2410_gpio_cfgpin(S3C2410_GPE(8), S3C2410_GPE8_SDDAT1);
+               s3c2410_gpio_cfgpin(S3C2410_GPE(9), S3C2410_GPE9_SDDAT2);
+               s3c2410_gpio_cfgpin(S3C2410_GPE(10), S3C2410_GPE10_SDDAT3);
 
                if (host->pdata->set_power)
                        host->pdata->set_power(ios->power_mode, ios->vdd);
@@ -1119,8 +1119,7 @@ static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
        case MMC_POWER_OFF:
        default:
-               s3c2410_gpio_setpin(S3C2410_GPE5, 0);
-               s3c2410_gpio_cfgpin(S3C2410_GPE5, S3C2410_GPIO_OUTPUT);
+               gpio_direction_output(S3C2410_GPE(5), 0);
 
                if (host->is2440)
                        mci_con |= S3C2440_SDICON_SDRESET;
@@ -1244,12 +1243,14 @@ static inline void s3cmci_cpufreq_deregister(struct s3cmci_host *host)
 }
 #endif
 
+
 static int __devinit s3cmci_probe(struct platform_device *pdev)
 {
        struct s3cmci_host *host;
        struct mmc_host *mmc;
        int ret;
        int is2440;
+       int i;
 
        is2440 = platform_get_device_id(pdev)->driver_data;
 
@@ -1259,6 +1260,18 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
                goto probe_out;
        }
 
+       for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++) {
+               ret = gpio_request(i, dev_name(&pdev->dev));
+               if (ret) {
+                       dev_err(&pdev->dev, "failed to get gpio %d\n", i);
+
+                       for (i--; i >= S3C2410_GPE(5); i--)
+                               gpio_free(i);
+
+                       goto probe_free_host;
+               }
+       }
+
        host = mmc_priv(mmc);
        host->mmc       = mmc;
        host->pdev      = pdev;
@@ -1295,7 +1308,7 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
                        "failed to get io memory region resouce.\n");
 
                ret = -ENOENT;
-               goto probe_free_host;
+               goto probe_free_gpio;
        }
 
        host->mem = request_mem_region(host->mem->start,
@@ -1304,7 +1317,7 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
        if (!host->mem) {
                dev_err(&pdev->dev, "failed to request io memory region.\n");
                ret = -ENOENT;
-               goto probe_free_host;
+               goto probe_free_gpio;
        }
 
        host->base = ioremap(host->mem->start, resource_size(host->mem));
@@ -1333,6 +1346,14 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
 
        disable_irq(host->irq);
 
+       if (host->pdata->gpio_detect) {
+               ret = gpio_request(host->pdata->gpio_detect, "s3cmci detect");
+               if (ret) {
+                       dev_err(&pdev->dev, "failed to get detect gpio\n");
+                       goto probe_free_irq;
+               }
+       }
+
        host->irq_cd = s3c2410_gpio_getirq(host->pdata->gpio_detect);
 
        if (host->irq_cd >= 0) {
@@ -1341,22 +1362,27 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
                                DRIVER_NAME, host)) {
                        dev_err(&pdev->dev, "can't get card detect irq.\n");
                        ret = -ENOENT;
-                       goto probe_free_irq;
+                       goto probe_free_gpio_cd;
                }
        } else {
                dev_warn(&pdev->dev, "host detect has no irq available\n");
-               s3c2410_gpio_cfgpin(host->pdata->gpio_detect,
-                                   S3C2410_GPIO_INPUT);
+               gpio_direction_input(host->pdata->gpio_detect);
        }
 
-       if (host->pdata->gpio_wprotect)
-               s3c2410_gpio_cfgpin(host->pdata->gpio_wprotect,
-                                   S3C2410_GPIO_INPUT);
+       if (host->pdata->gpio_wprotect) {
+               ret = gpio_request(host->pdata->gpio_wprotect, "s3cmci wp");
+               if (ret) {
+                       dev_err(&pdev->dev, "failed to get writeprotect\n");
+                       goto probe_free_irq_cd;
+               }
+
+               gpio_direction_input(host->pdata->gpio_wprotect);
+       }
 
        if (s3c2410_dma_request(S3CMCI_DMA, &s3cmci_dma_client, NULL) < 0) {
                dev_err(&pdev->dev, "unable to get DMA channel.\n");
                ret = -EBUSY;
-               goto probe_free_irq_cd;
+               goto probe_free_gpio_wp;
        }
 
        host->clk = clk_get(&pdev->dev, "sdi");
@@ -1423,6 +1449,14 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
  clk_free:
        clk_put(host->clk);
 
+ probe_free_gpio_wp:
+       if (host->pdata->gpio_wprotect)
+               gpio_free(host->pdata->gpio_wprotect);
+
+ probe_free_gpio_cd:
+       if (host->pdata->gpio_detect)
+               gpio_free(host->pdata->gpio_detect);
+
  probe_free_irq_cd:
        if (host->irq_cd >= 0)
                free_irq(host->irq_cd, host);
@@ -1436,8 +1470,13 @@ static int __devinit s3cmci_probe(struct platform_device *pdev)
  probe_free_mem_region:
        release_mem_region(host->mem->start, resource_size(host->mem));
 
+ probe_free_gpio:
+       for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
+               gpio_free(i);
+
  probe_free_host:
        mmc_free_host(mmc);
+
  probe_out:
        return ret;
 }
@@ -1459,6 +1498,8 @@ static int __devexit s3cmci_remove(struct platform_device *pdev)
 {
        struct mmc_host         *mmc  = platform_get_drvdata(pdev);
        struct s3cmci_host      *host = mmc_priv(mmc);
+       struct s3c24xx_mci_pdata *pd = host->pdata;
+       int i;
 
        s3cmci_shutdown(pdev);
 
@@ -1469,6 +1510,16 @@ static int __devexit s3cmci_remove(struct platform_device *pdev)
 
        free_irq(host->irq, host);
 
+       if (pd->gpio_wprotect)
+               gpio_free(pd->gpio_wprotect);
+
+       if (pd->gpio_detect)
+               gpio_free(pd->gpio_detect);
+
+       for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
+               gpio_free(i);
+
+
        iounmap(host->base);
        release_mem_region(host->mem->start, resource_size(host->mem));