diff options
Diffstat (limited to 'drivers/mmc/host/rtsx_pci_sdmmc.c')
| -rw-r--r-- | drivers/mmc/host/rtsx_pci_sdmmc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index f981f7d1f6e3..ad13f4240c49 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -57,6 +57,9 @@ struct realtek_pci_sdmmc { bool eject; bool initial_mode; bool ddr_mode; + int power_state; +#define SDMMC_POWER_ON 1 +#define SDMMC_POWER_OFF 0 }; static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host) @@ -765,6 +768,9 @@ static int sd_power_on(struct realtek_pci_sdmmc *host) struct rtsx_pcr *pcr = host->pcr; int err; + if (host->power_state == SDMMC_POWER_ON) + return 0; + rtsx_pci_init_cmd(pcr); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE, @@ -787,6 +793,7 @@ static int sd_power_on(struct realtek_pci_sdmmc *host) if (err < 0) return err; + host->power_state = SDMMC_POWER_ON; return 0; } @@ -795,6 +802,8 @@ static int sd_power_off(struct realtek_pci_sdmmc *host) struct rtsx_pcr *pcr = host->pcr; int err; + host->power_state = SDMMC_POWER_OFF; + rtsx_pci_init_cmd(pcr); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0); @@ -1260,6 +1269,7 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev) host->pcr = pcr; host->mmc = mmc; host->pdev = pdev; + host->power_state = SDMMC_POWER_OFF; platform_set_drvdata(pdev, host); pcr->slots[RTSX_SD_CARD].p_dev = pdev; pcr->slots[RTSX_SD_CARD].card_event = rtsx_pci_sdmmc_card_event; |