sunxi: mmc: set transfer timeout according to byte_cnt.

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

diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
index 0b7eb1246ba920ddcba2cca0a2ccfe8d6a645cd4..25f18adb67257359160803e92733a7ebaa938ac2 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)
@@ -72,10 +73,12 @@ 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)
+               if (!ret) {
+                       sunxi_gpio_set_pull(cd_pin, SUNXI_GPIO_PULL_UP);
                        ret = gpio_direction_input(cd_pin);
+               }
        }
 
        return ret;
@@ -151,8 +154,7 @@ 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
@@ -255,9 +257,11 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
        const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY :
                                              SUNXI_MMC_STATUS_FIFO_FULL;
        unsigned i;
-       unsigned byte_cnt = data->blocksize * data->blocks;
-       unsigned timeout_msecs = 2000;
        unsigned *buff = (unsigned int *)(reading ? data->dest : data->src);
+       unsigned byte_cnt = data->blocksize * data->blocks;
+       unsigned timeout_msecs = byte_cnt >> 8;
+       if (timeout_msecs < 2000)
+               timeout_msecs = 2000;
 
        /* Always read / write data through the CPU */
        setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
@@ -425,12 +429,29 @@ 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);
 }
 
+int sunxi_mmc_has_egon_boot_signature(struct mmc *mmc)
+{
+       char *buf = malloc(512);
+       int valid_signature = 0;
+
+       if (buf == NULL)
+               panic("Failed to allocate memory\n");
+
+       if (mmc_getcd(mmc) && mmc_init(mmc) == 0 &&
+           mmc->block_dev.block_read(mmc->block_dev.dev, 16, 1, buf) == 1 &&
+           strncmp(&buf[4], "eGON.BT0", 8) == 0)
+               valid_signature = 1;
+
+       free(buf);
+       return valid_signature;
+}
+
 static const struct mmc_ops sunxi_mmc_ops = {
        .send_cmd       = sunxi_mmc_send_cmd,
        .set_ios        = sunxi_mmc_set_ios,