diff options
| author | Thierry Reding <thierry.reding@avionic-design.de> | 2012-01-02 01:15:39 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-01-08 21:28:28 -0600 |
| commit | bf83662ba3a8586e52d3cfee1d82d5e06b61eefc (patch) | |
| tree | 52f4541d6dae623210ec3232d5b69a7b6027cc6d /drivers | |
| parent | d48d2e21d4cec0f1ae70287a6d32413d3262675c (diff) | |
mmc: tegra2: Implement card-detect hook.
On Tegra2, card-detection is implemented by passing the card-detection
GPIOs to the MMC driver at initialization time. Instead of implementing
the board_mmc_getcd() function, use the card-detect hook and allow
boards to override it by providing their own board_mmc_getcd()
implementation.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/tegra2_mmc.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c index 035a8687df..5b4c9f69a1 100644 --- a/drivers/mmc/tegra2_mmc.c +++ b/drivers/mmc/tegra2_mmc.c @@ -474,6 +474,18 @@ static int mmc_core_init(struct mmc *mmc) return 0; } +int tegra2_mmc_getcd(struct mmc *mmc) +{ + struct mmc_host *host = (struct mmc_host *)mmc->priv; + + debug("tegra2_mmc_getcd called\n"); + + if (host->cd_gpio >= 0) + return !gpio_get_value(host->cd_gpio); + + return 1; +} + int tegra2_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio) { struct mmc_host *host; @@ -512,6 +524,7 @@ int tegra2_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio) mmc->send_cmd = mmc_send_cmd; mmc->set_ios = mmc_set_ios; mmc->init = mmc_core_init; + mmc->getcd = tegra2_mmc_getcd; mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; if (bus_width == 8) @@ -535,22 +548,3 @@ int tegra2_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio) return 0; } - -/* this is a weak define that we are overriding */ -int board_mmc_getcd(u8 *cd, struct mmc *mmc) -{ - struct mmc_host *host = (struct mmc_host *)mmc->priv; - - debug("board_mmc_getcd called\n"); - - *cd = 1; /* Assume card is inserted, or eMMC */ - - if (IS_SD(mmc)) { - if (host->cd_gpio >= 0) { - if (gpio_get_value(host->cd_gpio)) - *cd = 0; - } - } - - return 0; -} |