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| author | Haojian Zhuang <haojian.zhuang@marvell.com> | 2011-04-01 10:39:28 +0800 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2011-07-12 19:50:38 +0800 |
| commit | e04eb14fd28ab044a48fd0a71e8c9117087176fb (patch) | |
| tree | e48cb690a2261ffa1520e7a8a91f09fac7d89b44 /arch/arm | |
| parent | f16e05c7501d6cc5d7c947e8d8ff2f8ac6fa97f4 (diff) | |
| download | linux-e04eb14fd28ab044a48fd0a71e8c9117087176fb.tar.gz linux-e04eb14fd28ab044a48fd0a71e8c9117087176fb.tar.bz2 linux-e04eb14fd28ab044a48fd0a71e8c9117087176fb.zip | |
ARM: mmp/dkb: enable max7312 gpio expander
Support max7312 gpio expander in TTC DKB.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-mmp/ttc_dkb.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/arch/arm/mach-mmp/ttc_dkb.c b/arch/arm/mach-mmp/ttc_dkb.c index e411039ea59e..6bd37a27e5fc 100644 --- a/arch/arm/mach-mmp/ttc_dkb.c +++ b/arch/arm/mach-mmp/ttc_dkb.c @@ -15,6 +15,8 @@ #include <linux/mtd/partitions.h> #include <linux/mtd/onenand.h> #include <linux/interrupt.h> +#include <linux/i2c/pca953x.h> +#include <linux/gpio.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -25,7 +27,17 @@ #include "common.h" -#define TTCDKB_NR_IRQS (IRQ_BOARD_START + 24) +#define TTCDKB_GPIO_EXT0(x) (NR_BUILTIN_GPIO + ((x < 0) ? 0 : \ + ((x < 16) ? x : 15))) +#define TTCDKB_GPIO_EXT1(x) (NR_BUILTIN_GPIO + 16 + ((x < 0) ? 0 : \ + ((x < 16) ? x : 15))) + +/* + * 16 board interrupts -- MAX7312 GPIO expander + * 16 board interrupts -- PCA9575 GPIO expander + * 24 board interrupts -- 88PM860x PMIC + */ +#define TTCDKB_NR_IRQS (IRQ_BOARD_START + 16 + 16 + 24) static unsigned long ttc_dkb_pin_config[] __initdata = { /* UART2 */ @@ -113,6 +125,22 @@ static struct platform_device *ttc_dkb_devices[] = { &ttc_dkb_device_onenand, }; +static struct pca953x_platform_data max7312_data[] = { + { + .gpio_base = TTCDKB_GPIO_EXT0(0), + .irq_base = IRQ_BOARD_START, + }, +}; + +static struct i2c_board_info ttc_dkb_i2c_info[] = { + { + .type = "max7312", + .addr = 0x23, + .irq = IRQ_GPIO(80), + .platform_data = &max7312_data, + }, +}; + static void __init ttc_dkb_init(void) { mfp_config(ARRAY_AND_SIZE(ttc_dkb_pin_config)); @@ -121,6 +149,7 @@ static void __init ttc_dkb_init(void) pxa910_add_uart(1); /* off-chip devices */ + pxa910_add_twsi(0, NULL, ARRAY_AND_SIZE(ttc_dkb_i2c_info)); platform_add_devices(ARRAY_AND_SIZE(ttc_dkb_devices)); } |