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authorThierry Reding <thierry.reding@avionic-design.de>2012-01-02 01:15:38 +0000
committerAndy Fleming <afleming@freescale.com>2012-01-08 21:28:28 -0600
commitd48d2e21d4cec0f1ae70287a6d32413d3262675c (patch)
tree3915d4d4cecf7465cea830032f312d013b84823a /drivers
parent48972d907a28de17c2a5108a3ee3d5f3eb434376 (diff)
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mmc: fsl_esdhc: Implement card-detect hook.
This card-detect hook probably doesn't work. Perhaps somebody with more knowledge about the hardware can comment on this. I think that perhaps even the complete code from esdhc_init() could go into the getcd() function instead or mmc_getcd() needs to be called at some later time after mmc_init(), which, however, would require many other drivers to change. In addition to implementing the hook, this patch also removes the call to the board_mmc_getcd() function which is now called from the MMC framework and is no longer required here. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Jason Liu <jason.hui@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/fsl_esdhc.c29
1 files changed, 12 insertions, 17 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index f038acc..1ed5355 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -418,7 +418,6 @@ static int esdhc_init(struct mmc *mmc)
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
struct fsl_esdhc *regs = (struct fsl_esdhc *)cfg->esdhc_base;
int timeout = 1000;
- int ret = 0;
/* Reset the entire host controller */
esdhc_write32(&regs->sysctl, SYSCTL_RSTA);
@@ -445,24 +444,19 @@ static int esdhc_init(struct mmc *mmc)
/* Set timout to the maximum value */
esdhc_clrsetbits32(&regs->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
- /* Check if there is a callback for detecting the card */
- ret = board_mmc_getcd(mmc);
- if (ret < 0) {
- timeout = 1000;
- while (!(esdhc_read32(&regs->prsstat) & PRSSTAT_CINS) &&
- --timeout)
- udelay(1000);
+ return 0;
+}
- if (timeout <= 0)
- ret = NO_CARD_ERR;
- } else {
- if (ret == 0)
- ret = NO_CARD_ERR;
- else
- ret = 0;
- }
+static int esdhc_getcd(struct mmc *mmc)
+{
+ struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+ struct fsl_esdhc *regs = (struct fsl_esdhc *)cfg->esdhc_base;
+ int timeout = 1000;
+
+ while (!(esdhc_read32(&regs->prsstat) & PRSSTAT_CINS) && --timeout)
+ udelay(1000);
- return ret;
+ return timeout > 0;
}
static void esdhc_reset(struct fsl_esdhc *regs)
@@ -500,6 +494,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
mmc->send_cmd = esdhc_send_cmd;
mmc->set_ios = esdhc_set_ios;
mmc->init = esdhc_init;
+ mmc->getcd = esdhc_getcd;
voltage_caps = 0;
caps = regs->hostcapblt;