Commit 85eb226c authored by David Brownell's avatar David Brownell Committed by Russell King
Browse files

[ARM] 3078/1: lubbock platform updates, mostly mmc detection 



Patch from David Brownell

Lubbock updates:

  * Provide an address for the SMC91x chip that doesn't generate
    a boot-time warning (matching the EEPROM).

  * Update MMC support to (a) detect card insert/remove, and
    (b) report the readonly switch setting for SD cards.

Previously, MMC/SD cards had to be present at boot time else they
couldn't be detected.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 4ebc3364

arch/arm/mach-pxa/lubbock.c

+60 −3
Original line number Diff line number Diff line
@@ -175,7 +175,7 @@ static struct platform_device sa1111_device = { 
static struct resource smc91x_resources[] = {

	[0] = {

		.name	= "smc91x-regs",

		.start	= 0x0c000000,

		.start	= 0x0c000c00,

		.end	= 0x0c0fffff,

		.flags	= IORESOURCE_MEM,

	},
@@ -224,18 +224,75 @@ static struct pxafb_mach_info sharp_lm8v31 __initdata = { 
	.lccr3		= LCCR3_PCP | LCCR3_Acb(255),

};



static int lubbock_mci_init(struct device *dev, irqreturn_t (*lubbock_detect_int)(int, void *, struct pt_regs *), void *data)

#define	MMC_POLL_RATE		msecs_to_jiffies(1000)



static void lubbock_mmc_poll(unsigned long);

static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);



static struct timer_list mmc_timer = {

	.function	= lubbock_mmc_poll,

};



static void lubbock_mmc_poll(unsigned long data)

{

	unsigned long flags;



	/* clear any previous irq state, then ... */

	local_irq_save(flags);

	LUB_IRQ_SET_CLR &= ~(1 << 0);

	local_irq_restore(flags);



	/* poll until mmc/sd card is removed */

	if (LUB_IRQ_SET_CLR & (1 << 0))

		mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);

	else {

		(void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);

		enable_irq(LUBBOCK_SD_IRQ);

	}

}



static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)

{

	/* IRQ is level triggered; disable, and poll for removal */

	disable_irq(irq);

	mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);



	return mmc_detect_int(irq, data, regs);

}



static int lubbock_mci_init(struct device *dev,

		irqreturn_t (*detect_int)(int, void *, struct pt_regs *),

		void *data)

{

	/* setup GPIO for PXA25x MMC controller	*/

	pxa_gpio_mode(GPIO6_MMCCLK_MD);

	pxa_gpio_mode(GPIO8_MMCCS0_MD);



	return 0;

	/* detect card insert/eject */

	mmc_detect_int = detect_int;

	init_timer(&mmc_timer);

	mmc_timer.data = (unsigned long) data;

	return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,

			SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);

}



static int lubbock_mci_get_ro(struct device *dev)

{

	return (LUB_MISC_RD & (1 << 2)) != 0;

}



static void lubbock_mci_exit(struct device *dev, void *data)

{

	free_irq(LUBBOCK_SD_IRQ, data);

	del_timer_sync(&mmc_timer);

}



static struct pxamci_platform_data lubbock_mci_platform_data = {

	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,

	.detect_delay	= 1,

	.init 		= lubbock_mci_init,

	.get_ro		= lubbock_mci_get_ro,

	.exit 		= lubbock_mci_exit,

};



static void lubbock_irda_transceiver_mode(struct device *dev, int mode)

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