diff options
Diffstat (limited to 'arch/arm/mach-tegra/p852/board-p852-sdhci.c')
| -rw-r--r-- | arch/arm/mach-tegra/p852/board-p852-sdhci.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/p852/board-p852-sdhci.c b/arch/arm/mach-tegra/p852/board-p852-sdhci.c new file mode 100644 index 000000000000..dc5b81fa3727 --- /dev/null +++ b/arch/arm/mach-tegra/p852/board-p852-sdhci.c @@ -0,0 +1,199 @@ +/* + * arch/arm/mach-tegra/board-p852-sdhci.c + * + * Copyright (c) 2010-2011, NVIDIA Corporation. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/resource.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/gpio.h> + +#include <asm/mach-types.h> +#include <mach/irqs.h> +#include <mach/iomap.h> +#include <mach/sdhci.h> +#include <mach/pinmux.h> +#include <asm/mach-types.h> + +#include "board-p852.h" + +static struct resource sdhci_resource1[] = { + [0] = { + .start = INT_SDMMC1, + .end = INT_SDMMC1, + .flags = IORESOURCE_IRQ, + }, + [1] = { + .start = TEGRA_SDMMC1_BASE, + .end = TEGRA_SDMMC1_BASE + TEGRA_SDMMC1_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct resource sdhci_resource2[] = { + [0] = { + .start = INT_SDMMC2, + .end = INT_SDMMC2, + .flags = IORESOURCE_IRQ, + }, + [1] = { + .start = TEGRA_SDMMC2_BASE, + .end = TEGRA_SDMMC2_BASE + TEGRA_SDMMC2_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct resource sdhci_resource3[] = { + [0] = { + .start = INT_SDMMC3, + .end = INT_SDMMC3, + .flags = IORESOURCE_IRQ, + }, + [1] = { + .start = TEGRA_SDMMC3_BASE, + .end = TEGRA_SDMMC3_BASE + TEGRA_SDMMC3_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct resource sdhci_resource4[] = { + [0] = { + .start = INT_SDMMC4, + .end = INT_SDMMC4, + .flags = IORESOURCE_IRQ, + }, + [1] = { + .start = TEGRA_SDMMC4_BASE, + .end = TEGRA_SDMMC4_BASE + TEGRA_SDMMC4_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +struct tegra_sdhci_platform_data p852_sdhci_platform_data[] = { + { + .cd_gpio = -1, + .wp_gpio = -1, + .power_gpio = -1, + }, + { + .cd_gpio = -1, + .wp_gpio = -1, + .power_gpio = -1, + }, + { + .cd_gpio = -1, + .wp_gpio = -1, + .power_gpio = -1, + }, + { + .cd_gpio = -1, + .wp_gpio = -1, + .power_gpio = -1, + }, +}; + +static struct platform_device tegra_sdhci_device[] = { + { + .name = "sdhci-tegra", + .id = 0, + .resource = sdhci_resource1, + .num_resources = ARRAY_SIZE(sdhci_resource1), + .dev = { + .platform_data = &p852_sdhci_platform_data[0], + }, + }, + { + .name = "sdhci-tegra", + .id = 1, + .resource = sdhci_resource2, + .num_resources = ARRAY_SIZE(sdhci_resource2), + .dev = { + .platform_data = &p852_sdhci_platform_data[1], + }, + }, + { + .name = "sdhci-tegra", + .id = 2, + .resource = sdhci_resource3, + .num_resources = ARRAY_SIZE(sdhci_resource3), + .dev = { + .platform_data = &p852_sdhci_platform_data[2], + }, + }, + { + .name = "sdhci-tegra", + .id = 3, + .resource = sdhci_resource4, + .num_resources = ARRAY_SIZE(sdhci_resource4), + .dev = { + .platform_data = &p852_sdhci_platform_data[3], + }, + }, + +}; + +void __init p852_sdhci_init(void) +{ + + int i, count = 10; + int cd = 0, wp = 0, pw = 0; + static char gpio_name[12][10]; + unsigned int sdhci_config = 0; + + if (p852_sku_peripherals & P852_SKU_SDHCI_ENABLE) + for (i = 0; i < P852_MAX_SDHCI; i++) { + sdhci_config = + (p852_sdhci_peripherals >> (P852_SDHCI_SHIFT * i)); + cd = i * 3; + wp = cd + 1; + pw = wp + 1; + if (sdhci_config & P852_SDHCI_ENABLE) { + if (sdhci_config & P852_SDHCI_CD_EN) { + snprintf(gpio_name[cd], count, + "sdhci%d_cd", i); + gpio_request(p852_sdhci_platform_data + [i].cd_gpio, + gpio_name[cd]); + tegra_gpio_enable + (p852_sdhci_platform_data[i]. + cd_gpio); + } + + if (sdhci_config & P852_SDHCI_WP_EN) { + snprintf(gpio_name[wp], count, + "sdhci%d_wp", i); + gpio_request(p852_sdhci_platform_data + [i].wp_gpio, + gpio_name[wp]); + tegra_gpio_enable + (p852_sdhci_platform_data[i]. + wp_gpio); + } + + if (sdhci_config & P852_SDHCI_PW_EN) { + snprintf(gpio_name[pw], count, + "sdhci%d_pw", i); + gpio_request(p852_sdhci_platform_data + [i].power_gpio, + gpio_name[pw]); + tegra_gpio_enable + (p852_sdhci_platform_data[i]. + power_gpio); + } + + platform_device_register(&tegra_sdhci_device + [i]); + } + } +} |