Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | */ |
| 18 | |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 19 | #include <linux/gpio.h> |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 20 | #include <linux/init.h> |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 21 | #include <linux/interrupt.h> |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 22 | #include <linux/platform_device.h> |
Valentin Longchamp | 220bbce | 2009-04-17 15:20:25 +0200 | [diff] [blame] | 23 | #include <linux/types.h> |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 24 | |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 25 | #include <mach/common.h> |
Valentin Longchamp | 220bbce | 2009-04-17 15:20:25 +0200 | [diff] [blame] | 26 | #include <mach/hardware.h> |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 27 | #include <mach/imx-uart.h> |
| 28 | #include <mach/iomux-mx3.h> |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 29 | #include <mach/mmc.h> |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 30 | |
| 31 | #include "devices.h" |
| 32 | |
Valentin Longchamp | 56c7a45 | 2009-04-22 10:55:50 +0200 | [diff] [blame] | 33 | static unsigned int marxbot_pins[] = { |
| 34 | /* SDHC2 */ |
| 35 | MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2, |
| 36 | MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0, |
| 37 | MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD, |
| 38 | MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29, |
| 39 | /* CSI */ |
| 40 | MX31_PIN_CSI_D4__CSI_D4, MX31_PIN_CSI_D5__CSI_D5, |
| 41 | MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7, |
| 42 | MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9, |
| 43 | MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11, |
| 44 | MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13, |
| 45 | MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15, |
| 46 | MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK, |
| 47 | MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC, |
| 48 | MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1, |
| 49 | MX31_PIN_TXD2__GPIO1_28, |
Valentin Longchamp | 2718c15 | 2009-08-12 11:29:21 +0200 | [diff] [blame] | 50 | /* dsPIC resets */ |
| 51 | MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22, |
Valentin Longchamp | 10949ff | 2009-11-03 18:09:48 +0100 | [diff] [blame^] | 52 | /*battery detection */ |
| 53 | MX31_PIN_LCS0__GPIO3_23, |
Valentin Longchamp | 56c7a45 | 2009-04-22 10:55:50 +0200 | [diff] [blame] | 54 | }; |
| 55 | |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 56 | #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR) |
| 57 | #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW) |
| 58 | |
| 59 | static int marxbot_sdhc2_get_ro(struct device *dev) |
| 60 | { |
Valentin Longchamp | 563abb4 | 2009-08-11 17:29:21 +0200 | [diff] [blame] | 61 | return !gpio_get_value(SDHC2_WP); |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq, |
| 65 | void *data) |
| 66 | { |
Sascha Hauer | 4f163eb | 2009-05-06 12:55:50 +0200 | [diff] [blame] | 67 | int ret; |
| 68 | |
| 69 | ret = gpio_request(SDHC2_CD, "sdhc-detect"); |
| 70 | if (ret) |
| 71 | return ret; |
| 72 | |
| 73 | gpio_direction_input(SDHC2_CD); |
| 74 | |
| 75 | ret = gpio_request(SDHC2_WP, "sdhc-wp"); |
| 76 | if (ret) |
| 77 | goto err_gpio_free; |
| 78 | gpio_direction_input(SDHC2_WP); |
| 79 | |
| 80 | ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq, |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 81 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
| 82 | "sdhc2-card-detect", data); |
Sascha Hauer | 4f163eb | 2009-05-06 12:55:50 +0200 | [diff] [blame] | 83 | if (ret) |
| 84 | goto err_gpio_free_2; |
| 85 | |
| 86 | return 0; |
| 87 | |
| 88 | err_gpio_free_2: |
| 89 | gpio_free(SDHC2_WP); |
| 90 | err_gpio_free: |
| 91 | gpio_free(SDHC2_CD); |
| 92 | |
| 93 | return ret; |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | static void marxbot_sdhc2_exit(struct device *dev, void *data) |
| 97 | { |
| 98 | free_irq(gpio_to_irq(SDHC2_CD), data); |
Sascha Hauer | 4f163eb | 2009-05-06 12:55:50 +0200 | [diff] [blame] | 99 | gpio_free(SDHC2_WP); |
| 100 | gpio_free(SDHC2_CD); |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | static struct imxmmc_platform_data sdhc2_pdata = { |
| 104 | .get_ro = marxbot_sdhc2_get_ro, |
| 105 | .init = marxbot_sdhc2_init, |
| 106 | .exit = marxbot_sdhc2_exit, |
| 107 | }; |
| 108 | |
Valentin Longchamp | 2718c15 | 2009-08-12 11:29:21 +0200 | [diff] [blame] | 109 | #define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_STXD5) |
| 110 | #define DSPICS_RST_B IOMUX_TO_GPIO(MX31_PIN_SRXD5) |
| 111 | |
| 112 | static void dspics_resets_init(void) |
| 113 | { |
| 114 | if (!gpio_request(TRSLAT_RST_B, "translator-rst")) { |
| 115 | gpio_direction_output(TRSLAT_RST_B, 1); |
| 116 | gpio_export(TRSLAT_RST_B, false); |
| 117 | } |
| 118 | |
| 119 | if (!gpio_request(DSPICS_RST_B, "dspics-rst")) { |
| 120 | gpio_direction_output(DSPICS_RST_B, 1); |
| 121 | gpio_export(DSPICS_RST_B, false); |
| 122 | } |
| 123 | } |
| 124 | |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 125 | /* |
| 126 | * system init for baseboard usage. Will be called by mx31moboard init. |
| 127 | */ |
| 128 | void __init mx31moboard_marxbot_init(void) |
| 129 | { |
| 130 | printk(KERN_INFO "Initializing mx31marxbot peripherals\n"); |
Valentin Longchamp | 56c7a45 | 2009-04-22 10:55:50 +0200 | [diff] [blame] | 131 | |
| 132 | mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins), |
| 133 | "marxbot"); |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 134 | |
Valentin Longchamp | 2718c15 | 2009-08-12 11:29:21 +0200 | [diff] [blame] | 135 | dspics_resets_init(); |
| 136 | |
Valentin Longchamp | 45b131a | 2009-04-21 10:24:56 +0200 | [diff] [blame] | 137 | mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata); |
Valentin Longchamp | 10949ff | 2009-11-03 18:09:48 +0100 | [diff] [blame^] | 138 | |
| 139 | /* battery present pin */ |
| 140 | gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present"); |
| 141 | gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0)); |
| 142 | gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false); |
Valentin Longchamp | e00f0b4 | 2009-02-16 12:47:51 +0100 | [diff] [blame] | 143 | } |