diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-06-20 19:10:33 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-07-21 00:02:11 -0400 |
| commit | b958a67c6bbe0a886bebc618aac7a059cdbab418 (patch) | |
| tree | b9006e2907d8a1a4299750bdd307cb35d30338d4 /drivers/mmc | |
| parent | 56c492879318f43b1a7911675ff30fb0ede123b5 (diff) | |
| download | blackbird-op-linux-b958a67c6bbe0a886bebc618aac7a059cdbab418.tar.gz blackbird-op-linux-b958a67c6bbe0a886bebc618aac7a059cdbab418.zip | |
mmc: tmio: add regulator support
Currently the TMIO MMC driver derives the OCR mask from the platform data
and uses a platform callback to turn card power on and off. This patch adds
regulator support to the driver.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_pio.c | 37 |
1 files changed, 29 insertions, 8 deletions
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index c6c0334a20e1..b5c32b40ebc1 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -768,6 +768,18 @@ static int tmio_mmc_clk_update(struct mmc_host *mmc) return ret; } +static void tmio_mmc_set_power(struct tmio_mmc_host *host, struct mmc_ios *ios) +{ + struct mmc_host *mmc = host->mmc; + + if (host->set_pwr) + host->set_pwr(host->pdev, ios->power_mode != MMC_POWER_OFF); + if (!IS_ERR(mmc->supply.vmmc)) + /* Errors ignored... */ + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, + ios->power_mode ? ios->vdd : 0); +} + /* Set MMC clock / power. * Note: This controller uses a simple divider scheme therefore it cannot * run a MMC card at full speed (20MHz). The max clock is 24MHz on SD, but as @@ -820,13 +832,12 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } tmio_mmc_set_clock(host, ios->clock); /* power up SD bus */ - if (host->set_pwr) - host->set_pwr(host->pdev, 1); + tmio_mmc_set_power(host, ios); /* start bus clock */ tmio_mmc_clk_start(host); } else if (ios->power_mode != MMC_POWER_UP) { - if (host->set_pwr && ios->power_mode == MMC_POWER_OFF) - host->set_pwr(host->pdev, 0); + if (ios->power_mode == MMC_POWER_OFF) + tmio_mmc_set_power(host, ios); if (host->power) { struct tmio_mmc_data *pdata = host->pdata; tmio_mmc_clk_stop(host); @@ -888,6 +899,19 @@ static const struct mmc_host_ops tmio_mmc_ops = { .enable_sdio_irq = tmio_mmc_enable_sdio_irq, }; +static void tmio_mmc_init_ocr(struct tmio_mmc_host *host) +{ + struct tmio_mmc_data *pdata = host->pdata; + struct mmc_host *mmc = host->mmc; + + mmc_regulator_get_supply(mmc); + + if (!mmc->ocr_avail) + mmc->ocr_avail = pdata->ocr_mask ? : MMC_VDD_32_33 | MMC_VDD_33_34; + else if (pdata->ocr_mask) + dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n"); +} + int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, struct platform_device *pdev, struct tmio_mmc_data *pdata) @@ -933,10 +957,7 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, mmc->max_segs; mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; mmc->max_seg_size = mmc->max_req_size; - if (pdata->ocr_mask) - mmc->ocr_avail = pdata->ocr_mask; - else - mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + tmio_mmc_init_ocr(_host); _host->native_hotplug = !(pdata->flags & TMIO_MMC_USE_GPIO_CD || mmc->caps & MMC_CAP_NEEDS_POLL || |
