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raw | patch | inline | side by side (parent: bfe6f62)
author | Thierry Reding <thierry.reding@avionic-design.de> | |
Mon, 2 Jan 2012 01:15:36 +0000 (01:15 +0000) | ||
committer | Andy Fleming <afleming@freescale.com> | |
Mon, 9 Jan 2012 03:28:27 +0000 (21:28 -0600) |
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.reding@avionic-design.de>
Tested-by: Jason Liu <jason.hui@linaro.org>
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.reding@avionic-design.de>
Tested-by: Jason Liu <jason.hui@linaro.org>
index 1f6c457e9909e41d14710cb38a05831533ec11b2..e88b2edfa10865aeccb7477f13a63f6451754fee 100644 (file)
--- a/board/efikamx/efikamx.c
+++ b/board/efikamx/efikamx.c
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();
+ int ret;
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *absent = gpio_get_value(IOMUX_TO_GPIO(cd));
+ ret = !gpio_get_value(IOMUX_TO_GPIO(cd));
else
- *absent = gpio_get_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_8));
+ ret = !gpio_get_value(IOMUX_TO_GPIO(MX51_PIN_GPIO1_8));
- return 0;
+ return ret;
}
int board_mmc_init(bd_t *bis)
index 6f5662a96d506f5b195f92dd17bb1ed7e380b5c3..e0b4cf2c330599484a6ea1dfa60a0a72fe6c1726 100644 (file)
}
/* 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
index e43aaf726ec605959e257aefce05553e0e2b7d81..8d1f6a33ce55b2d6418f61fd3631881ad810ef20 100644 (file)
}
#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;
+ int ret;
mxc_request_iomux(MX51_PIN_GPIO1_0, IOMUX_CONFIG_ALT1);
mxc_request_iomux(MX51_PIN_GPIO1_6, IOMUX_CONFIG_ALT0);
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(0);
+ ret = !gpio_get_value(0);
else
- *cd = gpio_get_value(6);
+ ret = !gpio_get_value(6);
- return 0;
+ return ret;
}
int board_mmc_init(bd_t *bis)
index e5a11429f29540688367f92537b423448b99b91a..40b5c1967ff6b344ad0a83bb55ee90f404ff20d5 100644 (file)
{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;
+ int ret;
mxc_request_iomux(MX53_PIN_GPIO_1, IOMUX_CONFIG_ALT1);
mxc_request_iomux(MX53_PIN_GPIO_4, IOMUX_CONFIG_ALT1);
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(1); /*GPIO1_1*/
+ ret = !gpio_get_value(1); /* GPIO1_1 */
else
- *cd = gpio_get_value(4); /*GPIO1_4*/
+ ret = !gpio_get_value(4); /* GPIO1_4 */
- return 0;
+ return ret;
}
int board_mmc_init(bd_t *bis)
index aa4a2c93dd0eba6a49ba4673bb54aa820dc1ff42..e976ae1c083d40dd132015a0587a98929dd752ac 100644 (file)
{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;
+ int ret;
mxc_request_iomux(MX53_PIN_EIM_DA11, IOMUX_CONFIG_ALT1);
mxc_request_iomux(MX53_PIN_EIM_DA13, IOMUX_CONFIG_ALT1);
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(77); /*GPIO3_13*/
+ ret = !gpio_get_value(77); /* GPIO3_13 */
else
- *cd = gpio_get_value(75); /*GPIO3_11*/
+ ret = !gpio_get_value(75); /* GPIO3_11 */
- return 0;
+ return ret;
}
int board_mmc_init(bd_t *bis)
index ea4d3543117f015e9f2b9aed914bfee92ec248da..e6345e7e5c2915500dbcc615d02287dc7169dc13 100644 (file)
{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;
+ int ret;
mxc_request_iomux(MX53_PIN_EIM_DA11, IOMUX_CONFIG_ALT1);
mxc_request_iomux(MX53_PIN_EIM_DA13, IOMUX_CONFIG_ALT1);
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(77); /*GPIO3_13*/
+ ret = !gpio_get_value(77); /* GPIO3_13 */
else
- *cd = gpio_get_value(75); /*GPIO3_11*/
+ ret = !gpio_get_value(75); /* GPIO3_11 */
- return 0;
+ return ret;
}
int board_mmc_init(bd_t *bis)
index 55af4e480c2e6884e95904f4b2a38cb4356b324b..e273192cac12ff5a1c4524a25cfff9558f78db06 100644 (file)
{MMC_SDHC1_BASE_ADDR, 1},
};
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
mxc_request_iomux(MX53_PIN_EIM_DA13, IOMUX_CONFIG_ALT1);
- *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 dee0cf0a9b3d0230538b0b5692f9135edf676d7b..0cbd90982943714eff57f8cf74f163726f4b6fda 100644 (file)
--- a/doc/README.atmel_mci
+++ b/doc/README.atmel_mci
}
/* 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
index ddd1b4c6f3feec13a26336f4c1ce3dda9163ebe5..f038acc8632194ab90c328edae441a93046b69e1 100644 (file)
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
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);
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)
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 98abf1c8e8d70eba58cb028c1c95161111197822..11c6aa67c16bbe812c58c681044929fb1c2410f1 100644 (file)
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
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 015a7f36ae91d04da9bcc66ab8029b0deeaf781d..a850174ab869f6ad3a6cbd464d3a2526b87194ee 100644 (file)
--- a/include/mmc.h
+++ b/include/mmc.h
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