The new API no longer uses the extra cd parameter that was used to store
the card presence state. Instead, this information is returned via the
function's return value. board_mmc_getcd() returns -1 to indicate that
no card-detection mechanism is implemented; 0 indicates that no card is
present and 1 is returned if it was detected that a card is present.
The rationale for this change can be found in the following email
thread:
http://lists.denx.de/pipermail/u-boot/2011-November/110180.html
In summary, the old API was not consistent with the rest of the MMC API
which always passes a struct mmc as the first parameter. Furthermore the
cd parameter was used to mean "card absence" in some implementations and
"card presence" in others.
Signed-off-by: Thierry Reding <thierry.red...@avionic-design.de>
---
board/efikamx/efikamx.c | 8 +++-----
board/emk/top9000/top9000.c | 12 ++----------
board/freescale/mx51evk/mx51evk.c | 8 +++-----
board/freescale/mx53ard/mx53ard.c | 8 +++-----
board/freescale/mx53evk/mx53evk.c | 8 +++-----
board/freescale/mx53loco/mx53loco.c | 8 +++-----
board/freescale/mx53smd/mx53smd.c | 6 ++----
doc/README.atmel_mci | 12 ++----------
drivers/mmc/fsl_esdhc.c | 8 +++++---
drivers/mmc/mmc.c | 4 ++--
include/mmc.h | 2 +-
11 files changed, 29 insertions(+), 55 deletions(-)
diff --git a/board/efikamx/efikamx.c b/board/efikamx/efikamx.c
index b78bf6c..451d709 100644
--- a/board/efikamx/efikamx.c
+++ b/board/efikamx/efikamx.c
@@ -309,17 +309,15 @@ static inline uint32_t efika_mmc_cd(void)
return MX51_PIN_EIM_CS2;
}
-int board_mmc_getcd(u8 *absent, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
uint32_t cd = efika_mmc_cd();
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *absent = gpio_get_value(IOMUX_TO_GPIO(cd));
- else
- *absent = gpio_get_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_8));
+ return !gpio_get_value(IOMUX_TO_GPIO(cd));
- return 0;
+ return !gpio_get_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_8));
}
int board_mmc_init(bd_t *bis)
diff --git a/board/emk/top9000/top9000.c b/board/emk/top9000/top9000.c
index 61dee62..d156e32 100644
--- a/board/emk/top9000/top9000.c
+++ b/board/emk/top9000/top9000.c
@@ -108,17 +108,9 @@ int board_mmc_init(bd_t *bd)
}
/* this is a weak define that we are overriding */
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
- /*
- * the only currently existing use of this function
- * (fsl_esdhc.c) suggests this function must return
- * *cs = TRUE if a card is NOT detected -> in most
- * cases the value of the pin when the detect switch
- * closes to GND
- */
- *cd = at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN) ? 1 : 0;
- return 0;
+ return !at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN);
}
#endif
diff --git a/board/freescale/mx51evk/mx51evk.c
b/board/freescale/mx51evk/mx51evk.c
index 37e6e4d..bc03496 100644
--- a/board/freescale/mx51evk/mx51evk.c
+++ b/board/freescale/mx51evk/mx51evk.c
@@ -261,16 +261,14 @@ static void power_init(void)
}
#ifdef CONFIG_FSL_ESDHC
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(0);
- else
- *cd = gpio_get_value(6);
+ return !gpio_get_value(0);
- return 0;
+ return !gpio_get_value(6);
}
int board_mmc_init(bd_t *bis)
diff --git a/board/freescale/mx53ard/mx53ard.c
b/board/freescale/mx53ard/mx53ard.c
index be32aee..786770a 100644
--- a/board/freescale/mx53ard/mx53ard.c
+++ b/board/freescale/mx53ard/mx53ard.c
@@ -83,16 +83,14 @@ struct fsl_esdhc_cfg esdhc_cfg[2] = {
{MMC_SDHC2_BASE_ADDR, 1 },
};
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(1); /*GPIO1_1*/
- else
- *cd = gpio_get_value(4); /*GPIO1_4*/
+ return !gpio_get_value(1); /*GPIO1_1*/
- return 0;
+ return !gpio_get_value(4); /*GPIO1_4*/
}
int board_mmc_init(bd_t *bis)
diff --git a/board/freescale/mx53evk/mx53evk.c
b/board/freescale/mx53evk/mx53evk.c
index 335661f..a4cd983 100644
--- a/board/freescale/mx53evk/mx53evk.c
+++ b/board/freescale/mx53evk/mx53evk.c
@@ -208,16 +208,14 @@ struct fsl_esdhc_cfg esdhc_cfg[2] = {
{MMC_SDHC3_BASE_ADDR, 1},
};
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(77); /*GPIO3_13*/
- else
- *cd = gpio_get_value(75); /*GPIO3_11*/
+ return !gpio_get_value(77); /*GPIO3_13*/
- return 0;
+ return !gpio_get_value(75); /*GPIO3_11*/
}
int board_mmc_init(bd_t *bis)
diff --git a/board/freescale/mx53loco/mx53loco.c
b/board/freescale/mx53loco/mx53loco.c
index b4c7f33..a0fe5fd 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -136,16 +136,14 @@ struct fsl_esdhc_cfg esdhc_cfg[2] = {
{MMC_SDHC3_BASE_ADDR, 1},
};
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(77); /*GPIO3_13*/
- else
- *cd = gpio_get_value(75); /*GPIO3_11*/
+ return !gpio_get_value(77); /*GPIO3_13*/
- return 0;
+ return !gpio_get_value(75); /*GPIO3_11*/
}
int board_mmc_init(bd_t *bis)
diff --git a/board/freescale/mx53smd/mx53smd.c
b/board/freescale/mx53smd/mx53smd.c
index 87fa7fa..39274f9 100644
--- a/board/freescale/mx53smd/mx53smd.c
+++ b/board/freescale/mx53smd/mx53smd.c
@@ -132,11 +132,9 @@ struct fsl_esdhc_cfg esdhc_cfg[1] = {
{MMC_SDHC1_BASE_ADDR, 1},
};
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
- *cd = gpio_get_value(77); /*GPIO3_13*/
-
- return 0;
+ return !gpio_get_value(77); /*GPIO3_13*/
}
int board_mmc_init(bd_t *bis)
diff --git a/doc/README.atmel_mci b/doc/README.atmel_mci
index dee0cf0..0cbd909 100644
--- a/doc/README.atmel_mci
+++ b/doc/README.atmel_mci
@@ -59,17 +59,9 @@ int board_mmc_init(bd_t *bd)
}
/* this is a weak define that we are overriding */
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
- /*
- * the only currently existing use of this function
- * (fsl_esdhc.c) suggests this function must return
- * *cs = TRUE if a card is NOT detected -> in most
- * cases the value of the pin when the detect switch
- * closes to GND
- */
- *cd = at91_get_gpio_value (CONFIG_SYS_MMC_CD_PIN) ? 1 : 0;
- return 0;
+ return !at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN);
}
#endif
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index ec953f0..f719afd 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -413,7 +413,6 @@ static int esdhc_init(struct mmc *mmc)
struct fsl_esdhc *regs = (struct fsl_esdhc *)cfg->esdhc_base;
int timeout = 1000;
int ret = 0;
- u8 card_absent;
/* Reset the entire host controller */
esdhc_write32(®s->sysctl, SYSCTL_RSTA);
@@ -441,7 +440,8 @@ static int esdhc_init(struct mmc *mmc)
esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
/* Check if there is a callback for detecting the card */
- if (board_mmc_getcd(&card_absent, mmc)) {
+ ret = board_mmc_getcd(mmc);
+ if (ret < 0) {
timeout = 1000;
while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) &&
--timeout)
@@ -450,8 +450,10 @@ static int esdhc_init(struct mmc *mmc)
if (timeout <= 0)
ret = NO_CARD_ERR;
} else {
- if (card_absent)
+ if (ret == 0)
ret = NO_CARD_ERR;
+ else
+ ret = 0;
}
return ret;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 37ce6e8..936259f 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -40,11 +40,11 @@
static struct list_head mmc_devices;
static int cur_dev_num = -1;
-int __board_mmc_getcd(u8 *cd, struct mmc *mmc) {
+int __board_mmc_getcd(struct mmc *mmc) {
return -1;
}
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak,
+int board_mmc_getcd(struct mmc *mmc)__attribute__((weak,
alias("__board_mmc_getcd")));
int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
diff --git a/include/mmc.h b/include/mmc.h
index 015a7f3..a850174 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -314,7 +314,7 @@ struct mmc *find_mmc_device(int dev_num);
int mmc_set_dev(int dev_num);
void print_mmc_devices(char separator);
int get_mmc_num(void);
-int board_mmc_getcd(u8 *cd, struct mmc *mmc);
+int board_mmc_getcd(struct mmc *mmc);
int mmc_switch_part(int dev_num, unsigned int part_num);
#ifdef CONFIG_GENERIC_MMC
--
1.7.8
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