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mfd: Adding twl6030 mmc card detect support for MMC1

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Adding card detect callback function and card detect configuration
function for MMC1 Controller on OMAP4.

Card detect configuration function does initial configuration of the
MMC Control & PullUp-PullDown registers of Phoenix.

For MMC1 Controller, card detect interrupt source is
twl6030 which is non-gpio. The card detect call back function provides
card present/absent status by reading MMC Control register present
on twl6030.

Since OMAP4 doesn't use any GPIO line as used in OMAP3 for card detect,
the suspend/resume initialization which was done in omap_hsmmc_gpio_init
previously is moved to the probe thus making it generic for both OMAP3 &
OMAP4.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Madhusudhan Chikkature <madhu.cr@ti.com>
Cc: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
kishore kadiyala
2010-09-24 17:13:20 +00:00
committed by Samuel Ortiz
parent 8e00593557
commit 72f2e2c763
4 changed files with 112 additions and 3 deletions
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4
drivers/mmc/host/omap_hsmmc.c
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@ -483,8 +483,6 @@ static int omap_hsmmc_gpio_init(struct omap_mmc_platform_data *pdata)
int ret;
if (gpio_is_valid(pdata->slots[0].switch_pin)) {
pdata->suspend = omap_hsmmc_suspend_cdirq;
pdata->resume = omap_hsmmc_resume_cdirq;
if (pdata->slots[0].cover)
pdata->slots[0].get_cover_state =
omap_hsmmc_get_cover_state;
@ -2218,6 +2216,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
"Unable to grab MMC CD IRQ\n");
goto err_irq_cd;
}
pdata->suspend = omap_hsmmc_suspend_cdirq;
pdata->resume = omap_hsmmc_resume_cdirq;
}
omap_hsmmc_disable_irq(host);