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mmc: Implement card detection.

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Check for card detect each time an MMC/SD device is initialized. If card
detection is not implemented, this code behaves as before and continues
assuming a card is present. If no card is detected, has_init is reset
for the MMC/SD device (to force initialization next time) and an error
is returned.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Jason Liu <jason.hui@linaro.org>
This commit is contained in:
Thierry Reding 2012-01-02 01:15:37 +00:00 committed by Andy Fleming
parent 314284b156
commit 48972d907a
15 changed files with 33 additions and 0 deletions
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1
drivers/mmc/arm_pl180_mmci.c
View file

@ -385,6 +385,7 @@ static int arm_pl180_mmci_host_init(struct mmc *dev)
dev->send_cmd = host_request;
dev->set_ios = host_set_ios;
dev->init = mmc_host_reset;
dev->getcd = NULL;
dev->host_caps = 0;
dev->voltages = VOLTAGE_WINDOW_MMC;
dev->f_min = dev->clock;

1
drivers/mmc/bfin_sdh.c
View file

@ -250,6 +250,7 @@ int bfin_mmc_init(bd_t *bis)
mmc->send_cmd = bfin_sdh_request;
mmc->set_ios = bfin_sdh_set_ios;
mmc->init = bfin_sdh_init;
mmc->getcd = NULL;
mmc->host_caps = MMC_MODE_4BIT;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;

1
drivers/mmc/davinci_mmc.c
View file

@ -387,6 +387,7 @@ int davinci_mmc_init(bd_t *bis, struct davinci_mmc *host)
mmc->send_cmd = dmmc_send_cmd;
mmc->set_ios = dmmc_set_ios;
mmc->init = dmmc_init;
mmc->getcd = NULL;
mmc->f_min = 200000;
mmc->f_max = 25000000;

1
drivers/mmc/ftsdc010_esdhc.c
View file

@ -665,6 +665,7 @@ int ftsdc010_mmc_init(int dev_index)
mmc->send_cmd = ftsdc010_request;
mmc->set_ios = ftsdc010_set_ios;
mmc->init = ftsdc010_core_init;
mmc->getcd = NULL;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;

1
drivers/mmc/gen_atmel_mci.c
View file

@ -337,6 +337,7 @@ int atmel_mci_init(void *regs)
mmc->send_cmd = mci_send_cmd;
mmc->set_ios = mci_set_ios;
mmc->init = mci_init;
mmc->getcd = NULL;
/* need to be able to pass these in on a board by board basis */
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;

18
drivers/mmc/mmc.c
View file

@ -674,6 +674,18 @@ int mmc_switch_part(int dev_num, unsigned int part_num)
| (part_num & PART_ACCESS_MASK));
}
int mmc_getcd(struct mmc *mmc)
{
int cd;
cd = board_mmc_getcd(mmc);
if ((cd < 0) && mmc->getcd)
cd = mmc->getcd(mmc);
return cd;
}
int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
{
struct mmc_cmd cmd;
@ -1202,6 +1214,12 @@ int mmc_init(struct mmc *mmc)
{
int err;
if (mmc_getcd(mmc) == 0) {
mmc->has_init = 0;
printf("MMC: no card present\n");
return NO_CARD_ERR;
}
if (mmc->has_init)
return 0;

1
drivers/mmc/mmc_spi.c
View file

@ -272,6 +272,7 @@ struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode)
mmc->send_cmd = mmc_spi_request;
mmc->set_ios = mmc_spi_set_ios;
mmc->init = mmc_spi_init_p;
mmc->getcd = NULL;
mmc->host_caps = MMC_MODE_SPI;
mmc->voltages = MMC_SPI_VOLTAGE;

1
drivers/mmc/mxcmmc.c
View file

@ -500,6 +500,7 @@ static int mxcmci_initialize(bd_t *bis)
mmc->send_cmd = mxcmci_request;
mmc->set_ios = mxcmci_set_ios;
mmc->init = mxcmci_init;
mmc->getcd = NULL;
mmc->host_caps = MMC_MODE_4BIT;
host->base = (struct mxcmci_regs *)CONFIG_MXC_MCI_REGS_BASE;

1
drivers/mmc/mxsmmc.c
View file

@ -329,6 +329,7 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int))
mmc->send_cmd = mxsmmc_send_cmd;
mmc->set_ios = mxsmmc_set_ios;
mmc->init = mxsmmc_init;
mmc->getcd = NULL;
mmc->priv = priv;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;

1
drivers/mmc/omap_hsmmc.c
View file

@ -472,6 +472,7 @@ int omap_mmc_init(int dev_index)
mmc->send_cmd = mmc_send_cmd;
mmc->set_ios = mmc_set_ios;
mmc->init = mmc_init_setup;
mmc->getcd = NULL;
switch (dev_index) {
case 0:

1
drivers/mmc/pxa_mmc_gen.c
View file

@ -411,6 +411,7 @@ int pxa_mmc_register(int card_index)
mmc->send_cmd = pxa_mmc_request;
mmc->set_ios = pxa_mmc_set_ios;
mmc->init = pxa_mmc_init;
mmc->getcd = NULL;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
mmc->f_max = PXAMMC_MAX_SPEED;

1
drivers/mmc/s5p_mmc.c
View file

@ -463,6 +463,7 @@ static int s5p_mmc_initialize(int dev_index, int bus_width)
mmc->send_cmd = mmc_send_cmd;
mmc->set_ios = mmc_set_ios;
mmc->init = mmc_core_init;
mmc->getcd = NULL;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
if (bus_width == 8)

1
drivers/mmc/sdhci.c
View file

@ -390,6 +390,7 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
mmc->send_cmd = sdhci_send_command;
mmc->set_ios = sdhci_set_ios;
mmc->init = sdhci_init;
mmc->getcd = NULL;
caps = sdhci_readl(host, SDHCI_CAPABILITIES);
#ifdef CONFIG_MMC_SDMA

1
drivers/mmc/sh_mmcif.c
View file

@ -598,6 +598,7 @@ int mmcif_mmc_init(void)
mmc->send_cmd = sh_mmcif_request;
mmc->set_ios = sh_mmcif_set_ios;
mmc->init = sh_mmcif_init;
mmc->getcd = NULL;
host->regs = (struct sh_mmcif_regs *)CONFIG_SH_MMCIF_ADDR;
host->clk = CONFIG_SH_MMCIF_CLK;
mmc->priv = host;

2
include/mmc.h
View file

@ -302,6 +302,7 @@ struct mmc {
struct mmc_cmd *cmd, struct mmc_data *data);
void (*set_ios)(struct mmc *mmc);
int (*init)(struct mmc *mmc);
int (*getcd)(struct mmc *mmc);
uint b_max;
};
@ -316,6 +317,7 @@ void print_mmc_devices(char separator);
int get_mmc_num(void);
int board_mmc_getcd(struct mmc *mmc);
int mmc_switch_part(int dev_num, unsigned int part_num);
int mmc_getcd(struct mmc *mmc);
#ifdef CONFIG_GENERIC_MMC
int atmel_mci_init(void *regs);