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[s3c24xx] glamo mmc regulator fixes.

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16922 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
lars 2009-07-19 16:42:37 +00:00
parent 04052c7fd2
commit 99683d6295
2 changed files with 22 additions and 10 deletions
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2
target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/Kconfig
View File

@ -43,7 +43,7 @@ config MFD_GLAMO_SPI_GPIO
config MFD_GLAMO_MCI
tristate "Glamo S3C SD/MMC Card Interface support"
depends on MFD_GLAMO && MMC
depends on MFD_GLAMO && MMC && REGULATOR
help
This selects a driver for the MCI interface found in
the S-Media GLAMO chip, as used in Openmoko

30
target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-mci.c
View File

@ -618,6 +618,7 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
struct glamo_mci_host *host = mmc_priv(mmc);
int bus_width = 0;
int powering = 0;
int ret;
if (host->suspending) {
dev_err(&host->pdev->dev, "IGNORING glamo_mci_set_ios while "
@ -628,8 +629,9 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
/* Set power */
switch(ios->power_mode) {
case MMC_POWER_UP:
mmc_regulator_set_ocr(host->regulator, ios->vdd);
host->vdd_current = ios->vdd;
ret = regulator_enable(host->regulator);
if (ret)
dev_err(&host->pdev->dev, "Failed to enable regulator: %d\n", ret);
break;
case MMC_POWER_ON:
/*
@ -638,10 +640,6 @@ 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) {
mmc_regulator_set_ocr(host->regulator, ios->vdd);
host->vdd_current = ios->vdd;
}
if (host->power_mode_current == MMC_POWER_OFF) {
glamo_engine_enable(host->pdata->core,
GLAMO_ENGINE_MMC);
@ -659,12 +657,20 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
glamo_engine_disable(host->pdata->core,
GLAMO_ENGINE_MMC);
mmc_regulator_set_ocr(host->regulator, 0);
host->vdd_current = -1;
ret = regulator_disable(host->regulator);
if (ret)
dev_warn(&host->pdev->dev, "Failed to disable regulator: %d\n", ret);
break;
}
host->power_mode_current = ios->power_mode;
if (host->vdd_current != ios->vdd) {
ret = mmc_regulator_set_ocr(host->regulator, ios->vdd);
if (ret)
dev_err(&host->pdev->dev, "Failed to set regulator voltage: %d\n", ret);
else
host->vdd_current = ios->vdd;
}
glamo_mci_set_card_clock(host, ios->clock);
/* after power-up, we are meant to give it >= 74 clocks so it can
@ -804,7 +810,7 @@ static int glamo_mci_probe(struct platform_device *pdev)
}
host->vdd_current = -1;
host->vdd_current = 0;
host->clk_rate = 50000000; /* really it's 49152000 */
host->clk_div = 16;
@ -824,6 +830,12 @@ static int glamo_mci_probe(struct platform_device *pdev)
mmc->max_phys_segs = 128;
mmc->max_hw_segs = 128;
if (mmc->ocr_avail < 0) {
dev_warn(&pdev->dev, "Failed to get ocr list for regulator: %d.\n",
mmc->ocr_avail);
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
}
platform_set_drvdata(pdev, mmc);
glamo_engine_enable(host->pdata->core, GLAMO_ENGINE_MMC);