dm: i2c: Add functions to read and write a register

[oweals/u-boot.git] / drivers / mmc / sunxi_mmc.c

diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
index 510479516b80432328b26ad827788afd4769f82d..bb0814706c56597d7131f434cc246b3d71e36672 100644 (file)
--- a/drivers/mmc/sunxi_mmc.c
+++ b/drivers/mmc/sunxi_mmc.c
@@ -9,6 +9,7 @@
  */
 
 #include <common.h>
+#include <errno.h>
 #include <malloc.h>
 #include <mmc.h>
 #include <asm/io.h>
@@ -37,7 +38,7 @@ static int sunxi_mmc_getcd_gpio(int sdc_no)
        case 2: return sunxi_name_to_gpio(CONFIG_MMC2_CD_PIN);
        case 3: return sunxi_name_to_gpio(CONFIG_MMC3_CD_PIN);
        }
-       return -1;
+       return -EINVAL;
 }
 
 static int mmc_resource_init(int sdc_no)
@@ -72,7 +73,7 @@ static int mmc_resource_init(int sdc_no)
        mmchost->mmc_no = sdc_no;
 
        cd_pin = sunxi_mmc_getcd_gpio(sdc_no);
-       if (cd_pin != -1) {
+       if (cd_pin >= 0) {
                ret = gpio_request(cd_pin, "mmc_cd");
                if (!ret)
                        ret = gpio_direction_input(cd_pin);
@@ -151,8 +152,7 @@ static int mmc_clk_io_on(int sdc_no)
        /* config ahb clock */
        setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MMC(sdc_no));
 
-#if defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN8I) || \
-    defined(CONFIG_MACH_SUN9I)
+#ifdef CONFIG_SUNXI_GEN_SUN6I
        /* unassert reset */
        setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MMC(sdc_no));
 #endif
@@ -215,7 +215,7 @@ static int mmc_config_clock(struct mmc *mmc)
        return 0;
 }
 
-static void mmc_set_ios(struct mmc *mmc)
+static void sunxi_mmc_set_ios(struct mmc *mmc)
 {
        struct sunxi_mmc_host *mmchost = mmc->priv;
 
@@ -237,7 +237,7 @@ static void mmc_set_ios(struct mmc *mmc)
                writel(0x0, &mmchost->reg->width);
 }
 
-static int mmc_core_init(struct mmc *mmc)
+static int sunxi_mmc_core_init(struct mmc *mmc)
 {
        struct sunxi_mmc_host *mmchost = mmc->priv;
 
@@ -298,8 +298,8 @@ static int mmc_rint_wait(struct mmc *mmc, unsigned int timeout_msecs,
        return 0;
 }
 
-static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
-                       struct mmc_data *data)
+static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
+                             struct mmc_data *data)
 {
        struct sunxi_mmc_host *mmchost = mmc->priv;
        unsigned int cmdval = SUNXI_MMC_CMD_START;
@@ -425,16 +425,16 @@ static int sunxi_mmc_getcd(struct mmc *mmc)
        int cd_pin;
 
        cd_pin = sunxi_mmc_getcd_gpio(mmchost->mmc_no);
-       if (cd_pin == -1)
+       if (cd_pin < 0)
                return 1;
 
        return !gpio_get_value(cd_pin);
 }
 
 static const struct mmc_ops sunxi_mmc_ops = {
-       .send_cmd       = mmc_send_cmd,
-       .set_ios        = mmc_set_ios,
-       .init           = mmc_core_init,
+       .send_cmd       = sunxi_mmc_send_cmd,
+       .set_ios        = sunxi_mmc_set_ios,
+       .init           = sunxi_mmc_core_init,
        .getcd          = sunxi_mmc_getcd,
 };
 
@@ -450,10 +450,6 @@ struct mmc *sunxi_mmc_init(int sdc_no)
        cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
        cfg->host_caps = MMC_MODE_4BIT;
        cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
-#if defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN7I) || \
-    defined(CONFIG_MACH_SUN8I) || defined(CONFIG_MACH_SUN9I)
-       cfg->host_caps |= MMC_MODE_HC;
-#endif
        cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
 
        cfg->f_min = 400000;