Andrew, Can this patch be taken now as there are no comments. Regards, Kishore On Wed, Jul 7, 2010 at 7:42 PM, kishore kadiyala <kishore.kadiyala@xxxxxx> wrote: > Adding card detect callback function and card detect configuration > function for MMC1 Controller. > > 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 and the card detect call back function provides card present/absent > status by reading MMC Control register. > > Signed-off-by: Kishore Kadiyala <kishore.kadiyala@xxxxxx> > Cc: Tony Lindgren <tony@xxxxxxxxxxx> > Cc: Madhusudhan Chikkature <madhu.cr@xxxxxx> > Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx> > --- > V5: > https://patchwork.kernel.org/patch/106697/ > https://patchwork.kernel.org/patch/106698/ > V4: > http://www.mail-archive.com/linux-mmc@xxxxxxxxxxxxxxx/msg01958.html > http://www.mail-archive.com/linux-mmc@xxxxxxxxxxxxxxx/msg01949.html > > > arch/arm/mach-omap2/board-4430sdp.c | 7 +++- > drivers/mfd/twl6030-irq.c | 76 +++++++++++++++++++++++++++++++++++ > drivers/mmc/host/omap_hsmmc.c | 4 +- > include/linux/i2c/twl.h | 16 +++++++ > 4 files changed, 100 insertions(+), 3 deletions(-) > > diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c > index f287461..388b96d 100644 > --- a/arch/arm/mach-omap2/board-4430sdp.c > +++ b/arch/arm/mach-omap2/board-4430sdp.c > @@ -227,9 +227,14 @@ static int omap4_twl6030_hsmmc_late_init(struct device *dev) > struct omap_mmc_platform_data *pdata = dev->platform_data; > > /* Setting MMC1 Card detect Irq */ > - if (pdev->id == 0) > + if (pdev->id == 0) { > + ret = twl6030_mmc_card_detect_config(); > + if (ret) > + pr_err("Failed configuring MMC1 card detect\n"); > pdata->slots[0].card_detect_irq = TWL6030_IRQ_BASE + > MMCDETECT_INTR_OFFSET; > + pdata->slots[0].card_detect = twl6030_mmc_card_detect; > + } > return ret; > } > > diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c > index 10bf228..c027692 100644 > --- a/drivers/mfd/twl6030-irq.c > +++ b/drivers/mfd/twl6030-irq.c > @@ -36,6 +36,7 @@ > #include <linux/irq.h> > #include <linux/kthread.h> > #include <linux/i2c/twl.h> > +#include <linux/platform_device.h> > > /* > * TWL6030 (unlike its predecessors, which had two level interrupt handling) > @@ -223,6 +224,81 @@ int twl6030_interrupt_mask(u8 bit_mask, u8 offset) > } > EXPORT_SYMBOL(twl6030_interrupt_mask); > > +int twl6030_mmc_card_detect_config(void) > +{ > + int ret; > + u8 reg_val = 0; > + > + /* Unmasking the Card detect Interrupt line for MMC1 from Phoenix */ > + if (twl_class_is_6030()) { > + twl6030_interrupt_unmask(TWL6030_MMCDETECT_INT_MASK, > + REG_INT_MSK_LINE_B); > + twl6030_interrupt_unmask(TWL6030_MMCDETECT_INT_MASK, > + REG_INT_MSK_STS_B); > + } > + > + /* > + * Intially Configuring MMC_CTRL for receving interrupts & > + * Card status on TWL6030 for MMC1 > + */ > + ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, ®_val, TWL6030_MMCCTRL); > + if (ret < 0) { > + pr_err("twl6030: Failed to read MMCCTRL, error %d\n", ret); > + return ret; > + } > + reg_val &= ~VMMC_AUTO_OFF; > + reg_val |= SW_FC; > + ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, reg_val, TWL6030_MMCCTRL); > + if (ret < 0) { > + return ret; > + pr_err("twl6030: Failed to write MMCCTRL, error %d\n", ret); > + } > + > + /* Configuring PullUp-PullDown register */ > + ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, ®_val, > + TWL6030_CFG_INPUT_PUPD3); > + if (ret < 0) { > + return ret; > + pr_err("twl6030: Failed to read CFG_INPUT_PUPD3, error %d\n", > + ret); > + } > + reg_val &= ~(MMC_PU | MMC_PD); > + ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, reg_val, > + TWL6030_CFG_INPUT_PUPD3); > + if (ret < 0) { > + pr_err("twl6030: Failed to write CFG_INPUT_PUPD3, error %d\n", > + ret); > + return ret; > + } > + return 0; > +} > +EXPORT_SYMBOL(twl6030_mmc_card_detect_config); > + > +int twl6030_mmc_card_detect(struct device *dev, int slot) > +{ > + int ret = -EIO; > + u8 read_reg; > + struct platform_device *pdev = container_of(dev, > + struct platform_device, dev); > + > + switch (pdev->id) { > + case 0: > + /* > + * BIT0 of REG_MMC_CTRL > + * 0 - Card not present ,1 - Card present > + */ > + ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &read_reg, > + TWL6030_MMCCTRL); > + if (ret >= 0) > + ret = read_reg & STS_MMC; > + break; > + default: > + pr_err("Unkown MMC controller %d in %s\n", pdev->id, __func__); > + } > + return ret; > +} > +EXPORT_SYMBOL(twl6030_mmc_card_detect); > + > int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) > { > > diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c > index b032828..c047b13 100644 > --- a/drivers/mmc/host/omap_hsmmc.c > +++ b/drivers/mmc/host/omap_hsmmc.c > @@ -464,8 +464,6 @@ 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; > @@ -2170,6 +2168,8 @@ 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); > diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h > index 6de90bf..9493292 100644 > --- a/include/linux/i2c/twl.h > +++ b/include/linux/i2c/twl.h > @@ -141,6 +141,16 @@ > #define TWL6030_CHARGER_CTRL_INT_MASK 0x10 > #define TWL6030_CHARGER_FAULT_INT_MASK 0x60 > > +#define TWL6030_MMCCTRL 0xEE > +#define VMMC_AUTO_OFF (0x1 << 3) > +#define SW_FC (0x1 << 2) > +#define STS_MMC 0x1 > + > +#define TWL6030_CFG_INPUT_PUPD3 0xF2 > +#define MMC_PU (0x1 << 3) > +#define MMC_PD (0x1 << 2) > + > + > > #define TWL4030_CLASS_ID 0x4030 > #define TWL6030_CLASS_ID 0x6030 > @@ -173,6 +183,12 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes); > int twl6030_interrupt_unmask(u8 bit_mask, u8 offset); > int twl6030_interrupt_mask(u8 bit_mask, u8 offset); > > +/* Card detect Configuration for MMC1 Controller on OMAP4 */ > +int twl6030_mmc_card_detect_config(void); > + > +/* MMC1 Controller on OMAP4 uses Phoenix irq for Card detect */ > +int twl6030_mmc_card_detect(struct device *dev, int slot); > + > /*----------------------------------------------------------------------*/ > > /* > -- > 1.6.3.3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
