Hi ,
I tested the patch on the OMAP 3 EVM. I still find that the hotplug feature does not work on the OMAP3 EVM. The issue is that if I read the gpio_cd, I am getting
the correct value on the gpio pin(INSERT = 0, PLUGOUT = 1) but the interrupts are not generated.
The mmc0 interrupts always shows 0.
root@xxxxxxxxxxxxx:~# cat /proc/interrupts
CPU0
11: 0 INTC prcm
12: 4 INTC DMA
25: 0 INTC dispc
37: 1724 INTC gp timer
56: 267 INTC i2c_omap
57: 0 INTC i2c_omap
61: 0 INTC i2c_omap
72: 178 INTC serial idle, serial
73: 1 INTC serial idle
74: 1 INTC serial idle
83: 43 INTC mmc0
92: 0 INTC musb_hdrc
93: 0 INTC musb_hdrc
335: 0 GPIO ads7846
336: 3565 GPIO eth0
369: 0 twl4030 twl4030_keypad
378: 0 twl4030 twl4030_usb
384: 0 twl4030 mmc0
Err: 0
Regards
Mani
> -----Original Message-----
> From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-
> owner@xxxxxxxxxxxxxxx] On Behalf Of David Brownell
> Sent: Thursday, February 05, 2009 4:53 AM
> To: OMAP
> Subject: [patch/rft 2.6.29-rc3-omap-git] omap3 evm: MMC switch support
>
> Update OMAP3 EVM board support to support the MMC/SD switches,
> when used with the twl4030 based power card.
>
> Also, less usefully, LEDB as a GPIO LED ... it's on the underside
> of the board, so it's probably not very useful to most folk. The
> LCD backlight is controlled by LEDA though; more useful, though
> its PWM mode might not be practical on this board (I don't know
> how that inductor will affect things).
>
> This is done from schematics, so it needs testing (and maybe some
> bugfixes) from folk with an EVM board.
>
> - Dave
>
> ---
> arch/arm/mach-omap2/board-omap3evm.c | 69 ++++++++++++++++++++++++++------
> arch/arm/mach-omap2/mux.c | 2
> arch/arm/plat-omap/include/mach/mux.h | 1
> 3 files changed, 61 insertions(+), 11 deletions(-)
>
> --- a/arch/arm/mach-omap2/board-omap3evm.c
> +++ b/arch/arm/mach-omap2/board-omap3evm.c
> @@ -19,6 +19,7 @@
> #include <linux/err.h>
> #include <linux/clk.h>
> #include <linux/input.h>
> +#include <linux/leds.h>
>
> #include <linux/spi/spi.h>
> #include <linux/spi/ads7846.h>
> @@ -31,6 +32,7 @@
>
> #include <mach/gpio.h>
> #include <mach/board.h>
> +#include <mach/mux.h>
> #include <mach/usb-musb.h>
> #include <mach/usb-ehci.h>
> #include <mach/common.h>
> @@ -88,10 +90,66 @@ static struct omap_uart_config omap3_evm
> .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
> };
>
> +static struct twl4030_hsmmc_info mmc[] = {
> + {
> + .mmc = 1,
> + .wires = 4,
> + .gpio_cd = -EINVAL,
> + .gpio_wp = 63,
> + },
> + {} /* Terminator */
> +};
> +
> +static struct gpio_led gpio_leds[] = {
> + {
> + .name = "omap3evm::ledb",
> + /* normally not visible (board underside) */
> + .default_trigger = "default-on",
> + .gpio = -EINVAL, /* gets replaced */
> + .active_low = true,
> + },
> +};
> +
> +static struct gpio_led_platform_data gpio_led_info = {
> + .leds = gpio_leds,
> + .num_leds = ARRAY_SIZE(gpio_leds),
> +};
> +
> +static struct platform_device leds_gpio = {
> + .name = "leds-gpio",
> + .id = -1,
> + .dev = {
> + .platform_data = &gpio_led_info,
> + },
> +};
> +
> +
> +static int omap3evm_twl_gpio_setup(struct device *dev,
> + unsigned gpio, unsigned ngpio)
> +{
> + /* gpio + 0 is "mmc0_cd" (input/IRQ) */
> + omap_cfg_reg(L8_34XX_GPIO63);
> + mmc[0].gpio_cd = gpio + 0;
> + twl4030_mmc_init(mmc);
> +
> + /* Most GPIOs are for USB OTG. Some are mostly sent to
> + * the P2 connector; notably LEDA for the LCD backlight.
> + */
> +
> + /* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
> + gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
> +
> + platform_device_register(&leds_gpio);
> +
> + return 0;
> +}
> +
> static struct twl4030_gpio_platform_data omap3evm_gpio_data = {
> .gpio_base = OMAP_MAX_GPIO_LINES,
> .irq_base = TWL4030_GPIO_IRQ_BASE,
> .irq_end = TWL4030_GPIO_IRQ_END,
> + .use_leds = true,
> + .setup = omap3evm_twl_gpio_setup,
> };
>
> static struct twl4030_usb_data omap3evm_usb_data = {
> @@ -232,16 +290,6 @@ static struct platform_device *omap3_evm
> &omap3evm_smc911x_device,
> };
>
> -static struct twl4030_hsmmc_info mmc[] __initdata = {
> - {
> - .mmc = 1,
> - .wires = 4,
> - .gpio_cd = -EINVAL,
> - .gpio_wp = -EINVAL,
> - },
> - {} /* Terminator */
> -};
> -
> static void __init omap3_evm_init(void)
> {
> omap3_evm_i2c_init();
> @@ -254,7 +302,6 @@ static void __init omap3_evm_init(void)
> ARRAY_SIZE(omap3evm_spi_board_info));
>
> omap_serial_init();
> - twl4030_mmc_init(mmc);
> usb_musb_init();
> usb_ehci_init();
> omap3evm_flash_init();
> --- a/arch/arm/mach-omap2/mux.c
> +++ b/arch/arm/mach-omap2/mux.c
> @@ -463,6 +463,8 @@ MUX_CFG_34XX("AF26_34XX_GPIO0", 0x1e0,
> OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_OUTPUT)
> MUX_CFG_34XX("AF22_34XX_GPIO9", 0xa18,
> OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_OUTPUT)
> +MUX_CFG_34XX("L8_34XX_GPIO63", 0x0ce,
> + OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_OUTPUT)
> MUX_CFG_34XX("AF6_34XX_GPIO140_UP", 0x16c,
> OMAP34XX_MUX_MODE4 | OMAP34XX_PIN_INPUT_PULLUP)
> MUX_CFG_34XX("AE6_34XX_GPIO141", 0x16e,
> --- a/arch/arm/plat-omap/include/mach/mux.h
> +++ b/arch/arm/plat-omap/include/mach/mux.h
> @@ -792,6 +792,7 @@ enum omap34xx_index {
> J25_34XX_GPIO170,
> AF26_34XX_GPIO0,
> AF22_34XX_GPIO9,
> + L8_34XX_GPIO63,
> AF6_34XX_GPIO140_UP,
> AE6_34XX_GPIO141,
> AF5_34XX_GPIO142,
> --
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