From aca6741a1d26736f6000d18b3c60a18a313be6ea Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 26 Jan 2015 17:40:22 +0000 Subject: [PATCH 097/114] bcm2709: Port pps-gpio and i2c patches --- arch/arm/mach-bcm2709/bcm2709.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) --- a/arch/arm/mach-bcm2709/bcm2709.c +++ b/arch/arm/mach-bcm2709/bcm2709.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include @@ -95,6 +96,8 @@ static unsigned disk_led_active_low = 1; static unsigned reboot_part = 0; static unsigned w1_gpio_pin = W1_GPIO; static unsigned w1_gpio_pullup = W1_PULLUP; +static int pps_gpio_pin = -1; +static bool vc_i2c_override = false; static unsigned use_dt = 0; @@ -283,6 +286,19 @@ static struct platform_device w1_device }; #endif +static struct pps_gpio_platform_data pps_gpio_info = { + .assert_falling_edge = false, + .capture_clear = false, + .gpio_pin = -1, + .gpio_label = "PPS", +}; + +static struct platform_device pps_gpio_device = { + .name = "pps-gpio", + .id = PLATFORM_DEVID_NONE, + .dev.platform_data = &pps_gpio_info, +}; + static u64 fb_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON); static struct platform_device bcm2708_fb_device = { @@ -860,6 +876,16 @@ void __init bcm2709_init(void) #ifdef CONFIG_BCM2708_GPIO bcm_register_device_dt(&bcm2708_gpio_device); #endif + +#if defined(CONFIG_PPS_CLIENT_GPIO) || defined(CONFIG_PPS_CLIENT_GPIO_MODULE) + if (!use_dt && (pps_gpio_pin >= 0)) { + pr_info("bcm2709: GPIO %d setup as pps-gpio device\n", pps_gpio_pin); + pps_gpio_info.gpio_pin = pps_gpio_pin; + pps_gpio_device.id = pps_gpio_pin; + bcm_register_device(&pps_gpio_device); + } +#endif + #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE) w1_gpio_pdata.pin = w1_gpio_pin; w1_gpio_pdata.ext_pullup_enable_pin = w1_gpio_pullup; @@ -884,8 +910,15 @@ void __init bcm2709_init(void) bcm_register_device(&bcm2835_thermal_device); bcm_register_device_dt(&bcm2708_spi_device); - bcm_register_device_dt(&bcm2708_bsc0_device); - bcm_register_device_dt(&bcm2708_bsc1_device); + + if (vc_i2c_override) { + bcm_register_device_dt(&bcm2708_bsc0_device); + bcm_register_device_dt(&bcm2708_bsc1_device); + } else if ((boardrev & 0xffffff) == 0x2 || (boardrev & 0xffffff) == 0x3) { + bcm_register_device_dt(&bcm2708_bsc0_device); + } else { + bcm_register_device_dt(&bcm2708_bsc1_device); + } #if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE) bcm_register_device_dt(&bcm2708_i2s_device); @@ -1245,3 +1278,7 @@ module_param(disk_led_active_low, uint, module_param(reboot_part, uint, 0644); module_param(w1_gpio_pin, uint, 0644); module_param(w1_gpio_pullup, uint, 0644); +module_param(pps_gpio_pin, int, 0644); +MODULE_PARM_DESC(pps_gpio_pin, "Set GPIO pin to reserve for PPS"); +module_param(vc_i2c_override, bool, 0644); +MODULE_PARM_DESC(vc_i2c_override, "Allow the use of VC's I2C peripheral.");