diff options
author | Balaji Rao <balajirrao@openmoko.org> | 2008-11-20 19:46:50 +0000 |
---|---|---|
committer | Andy Green <agreen@pads.home.warmcat.com> | 2008-11-20 19:46:50 +0000 |
commit | f00ed35e0335f26e45405eb82776cef1d76ee5f3 (patch) | |
tree | dc925a8d462428122efdab66418def1bdc3c2f82 /drivers/mfd/glamo/glamo-mci.c | |
parent | 1552c51b244b71d57b73edef14047682e70717ca (diff) |
glamo_mci_use_regulator_api.patch
Changes the glamo-mci driver to use the regulator API.
Diffstat (limited to 'drivers/mfd/glamo/glamo-mci.c')
-rw-r--r-- | drivers/mfd/glamo/glamo-mci.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c index 00e3c5c5ccd..5079796ba28 100644 --- a/drivers/mfd/glamo/glamo-mci.c +++ b/drivers/mfd/glamo/glamo-mci.c @@ -757,13 +757,24 @@ static void glamo_mci_reset(struct glamo_mci_host *host) glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_MMC); } #endif +static inline int glamo_mci_get_mv(int vdd) +{ + int mv = 1650; + + if (vdd > 7) + mv += 350 + 100 * (vdd - 8); + + return mv; +} static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct glamo_mci_host *host = mmc_priv(mmc); + struct regulator *regulator; int n = 0; int div; int powering = 0; + int mv; if (host->suspending) { dev_err(&host->pdev->dev, "IGNORING glamo_mci_set_ios while " @@ -771,10 +782,18 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) return; } + regulator = host->regulator; + /* Set power */ switch(ios->power_mode) { - case MMC_POWER_ON: case MMC_POWER_UP: + if (host->pdata->glamo_can_set_mci_power()) { + mv = glamo_mci_get_mv(ios->vdd); + regulator_set_voltage(regulator, mv * 1000, mv * 1000); + regulator_enable(regulator); + } + break; + case MMC_POWER_ON: /* * we should use very slow clock until first bulk * transfer completes OK @@ -782,8 +801,11 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) host->force_slow_during_powerup = 1; if (host->vdd_current != ios->vdd) { - host->pdata->glamo_set_mci_power(ios->power_mode, - ios->vdd); + if (host->pdata->glamo_can_set_mci_power()) { + mv = glamo_mci_get_mv(ios->vdd); + regulator_set_voltage(regulator, mv * 1000, mv * 1000); + printk(KERN_INFO "SD power -> %dmV\n", mv); + } host->vdd_current = ios->vdd; } if (host->power_mode_current == MMC_POWER_OFF) { @@ -802,7 +824,7 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) glamo_engine_disable(glamo_mci_def_pdata.pglamo, GLAMO_ENGINE_MMC); - host->pdata->glamo_set_mci_power(MMC_POWER_OFF, 0); + regulator_disable(regulator); host->vdd_current = -1; break; } @@ -907,6 +929,12 @@ static int glamo_mci_probe(struct platform_device *pdev) goto probe_free_mem_region; } + host->regulator = regulator_get(&pdev->dev, "SD_3V3"); + if (!host->regulator) { + dev_err(&pdev->dev, "Cannot proceed without regulator.\n"); + return -ENODEV; + } + /* set the handler for our bit of the shared chip irq register */ set_irq_handler(IRQ_GLAMO(GLAMO_IRQIDX_MMC), glamo_mci_irq); /* stash host as our handler's private data */ @@ -994,6 +1022,7 @@ static int glamo_mci_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); struct glamo_mci_host *host = mmc_priv(mmc); + struct regulator *regulator; mmc_remove_host(mmc); /* stop using our handler, revert it to default */ @@ -1002,6 +1031,10 @@ static int glamo_mci_remove(struct platform_device *pdev) iounmap(host->base_data); release_mem_region(host->mem->start, RESSIZE(host->mem)); release_mem_region(host->mem_data->start, RESSIZE(host->mem_data)); + + regulator = host->regulator; + regulator_put(regulator); + mmc_free_host(mmc); glamo_engine_disable(glamo_mci_def_pdata.pglamo, GLAMO_ENGINE_MMC); |