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

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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: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
David Brownell 2005-11-01 19:44:30 +00:00 committed by Russell King
parent 4ebc3364de
commit 85eb226c44
1 changed files with 60 additions and 3 deletions
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63
arch/arm/mach-pxa/lubbock.c
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@ -175,7 +175,7 @@ static struct platform_device sa1111_device = {
static struct resource smc91x_resources[] = { static struct resource smc91x_resources[] = {
[0] = { [0] = {
.name = "smc91x-regs", .name = "smc91x-regs",
.start = 0x0c000000, .start = 0x0c000c00,
.end = 0x0c0fffff, .end = 0x0c0fffff,
.flags = IORESOURCE_MEM, .flags = IORESOURCE_MEM,
}, },
@ -224,18 +224,75 @@ static struct pxafb_mach_info sharp_lm8v31 __initdata = {
.lccr3 = LCCR3_PCP | LCCR3_Acb(255), .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 */ /* setup GPIO for PXA25x MMC controller */
pxa_gpio_mode(GPIO6_MMCCLK_MD); pxa_gpio_mode(GPIO6_MMCCLK_MD);
pxa_gpio_mode(GPIO8_MMCCS0_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 = { static struct pxamci_platform_data lubbock_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.detect_delay = 1,
.init = lubbock_mci_init, .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) static void lubbock_irda_transceiver_mode(struct device *dev, int mode)