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| author |   Rui Feng <rui_feng@realsil.com.cn> | 2020-11-03 17:54:29 +0800 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2020-11-16 11:59:29 +0100 |
| commit | 6b7b58f425c3359787483479d73c0bb98ffc65b8 (patch) | |
| tree | 27b6cbe16ea97245a86f5cd159158f194f09e211 /drivers/mmc/host/rtsx_pci_sdmmc.c | |
| parent | mmc: mediatek: add HS400 enhanced strobe support (diff) | |
| download | linux-dev-6b7b58f425c3359787483479d73c0bb98ffc65b8.tar.xz linux-dev-6b7b58f425c3359787483479d73c0bb98ffc65b8.zip | |
mmc: rtsx: Add test mode for RTS5261
This patch add test mode for RTS5261.
If test mode is set, reader will switch to SD Express mode
mandatorily, and this mode is used by factory testing only.
Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397269-2780-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/rtsx_pci_sdmmc.c')
| -rw-r--r-- | drivers/mmc/host/rtsx_pci_sdmmc.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index c584070b39fe..e9ea703f08c5 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -47,6 +47,8 @@ struct realtek_pci_sdmmc { bool using_cookie; }; +static int sdmmc_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios); + static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host) { return &(host->pdev->dev); @@ -898,6 +900,7 @@ static int sd_power_on(struct realtek_pci_sdmmc *host) struct mmc_host *mmc = host->mmc; int err; u32 val; + u8 test_mode; if (host->power_state == SDMMC_POWER_ON) return 0; @@ -925,6 +928,15 @@ static int sd_power_on(struct realtek_pci_sdmmc *host) return err; if (PCI_PID(pcr) == PID_5261) { + /* + * If test mode is set switch to SD Express mandatorily, + * this is only for factory testing. + */ + rtsx_pci_read_register(pcr, RTS5261_FW_CFG_INFO0, &test_mode); + if (test_mode & RTS5261_FW_EXPRESS_TEST_MASK) { + sdmmc_init_sd_express(mmc, NULL); + return 0; + } if (pcr->extra_caps & EXTRA_CAPS_SD_EXPRESS) mmc->caps2 |= MMC_CAP2_SD_EXP | MMC_CAP2_SD_EXP_1_2V; /* @@ -1355,10 +1367,11 @@ static int sdmmc_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios) rtsx_pci_write_register(pcr, RTS5261_FW_CFG0, RTS5261_FW_ENTER_EXPRESS, RTS5261_FW_ENTER_EXPRESS); rtsx_pci_write_register(pcr, RTS5261_FW_CFG1, + RTS5261_MCU_CLOCK_GATING, RTS5261_MCU_CLOCK_GATING); + rtsx_pci_write_register(pcr, RTS5261_FW_CFG1, RTS5261_MCU_BUS_SEL_MASK | RTS5261_MCU_CLOCK_SEL_MASK - | RTS5261_MCU_CLOCK_GATING | RTS5261_DRIVER_ENABLE_FW, - RTS5261_MCU_CLOCK_SEL_16M | RTS5261_MCU_CLOCK_GATING - | RTS5261_DRIVER_ENABLE_FW); + | RTS5261_DRIVER_ENABLE_FW, + RTS5261_MCU_CLOCK_SEL_16M | RTS5261_DRIVER_ENABLE_FW); host->eject = true; return 0; } |