1 /* 2 * OMAP16xx specific gpio init 3 * 4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ 5 * 6 * Author: 7 * Charulatha V <charu@ti.com> 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation version 2. 12 * 13 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 14 * kind, whether express or implied; without even the implied warranty 15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19 #include <linux/gpio.h> 20 21 #define OMAP1610_GPIO1_BASE 0xfffbe400 22 #define OMAP1610_GPIO2_BASE 0xfffbec00 23 #define OMAP1610_GPIO3_BASE 0xfffbb400 24 #define OMAP1610_GPIO4_BASE 0xfffbbc00 25 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE 26 27 /* mpu gpio */ 28 static struct __initdata resource omap16xx_mpu_gpio_resources[] = { 29 { 30 .start = OMAP1_MPUIO_VBASE, 31 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1, 32 .flags = IORESOURCE_MEM, 33 }, 34 { 35 .start = INT_MPUIO, 36 .flags = IORESOURCE_IRQ, 37 }, 38 }; 39 40 static struct omap_gpio_reg_offs omap16xx_mpuio_regs = { 41 .revision = USHRT_MAX, 42 .direction = OMAP_MPUIO_IO_CNTL, 43 .datain = OMAP_MPUIO_INPUT_LATCH, 44 .dataout = OMAP_MPUIO_OUTPUT, 45 .irqstatus = OMAP_MPUIO_GPIO_INT, 46 .irqenable = OMAP_MPUIO_GPIO_MASKIT, 47 .irqenable_inv = true, 48 }; 49 50 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = { 51 .virtual_irq_start = IH_MPUIO_BASE, 52 .bank_type = METHOD_MPUIO, 53 .bank_width = 16, 54 .bank_stride = 1, 55 .regs = &omap16xx_mpuio_regs, 56 }; 57 58 static struct platform_device omap16xx_mpu_gpio = { 59 .name = "omap_gpio", 60 .id = 0, 61 .dev = { 62 .platform_data = &omap16xx_mpu_gpio_config, 63 }, 64 .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources), 65 .resource = omap16xx_mpu_gpio_resources, 66 }; 67 68 /* gpio1 */ 69 static struct __initdata resource omap16xx_gpio1_resources[] = { 70 { 71 .start = OMAP1610_GPIO1_BASE, 72 .end = OMAP1610_GPIO1_BASE + SZ_2K - 1, 73 .flags = IORESOURCE_MEM, 74 }, 75 { 76 .start = INT_GPIO_BANK1, 77 .flags = IORESOURCE_IRQ, 78 }, 79 }; 80 81 static struct omap_gpio_reg_offs omap16xx_gpio_regs = { 82 .revision = OMAP1610_GPIO_REVISION, 83 .direction = OMAP1610_GPIO_DIRECTION, 84 .set_dataout = OMAP1610_GPIO_SET_DATAOUT, 85 .clr_dataout = OMAP1610_GPIO_CLEAR_DATAOUT, 86 .datain = OMAP1610_GPIO_DATAIN, 87 .dataout = OMAP1610_GPIO_DATAOUT, 88 .irqstatus = OMAP1610_GPIO_IRQSTATUS1, 89 .irqenable = OMAP1610_GPIO_IRQENABLE1, 90 .set_irqenable = OMAP1610_GPIO_SET_IRQENABLE1, 91 .clr_irqenable = OMAP1610_GPIO_CLEAR_IRQENABLE1, 92 }; 93 94 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = { 95 .virtual_irq_start = IH_GPIO_BASE, 96 .bank_type = METHOD_GPIO_1610, 97 .bank_width = 16, 98 .regs = &omap16xx_gpio_regs, 99 }; 100 101 static struct platform_device omap16xx_gpio1 = { 102 .name = "omap_gpio", 103 .id = 1, 104 .dev = { 105 .platform_data = &omap16xx_gpio1_config, 106 }, 107 .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources), 108 .resource = omap16xx_gpio1_resources, 109 }; 110 111 /* gpio2 */ 112 static struct __initdata resource omap16xx_gpio2_resources[] = { 113 { 114 .start = OMAP1610_GPIO2_BASE, 115 .end = OMAP1610_GPIO2_BASE + SZ_2K - 1, 116 .flags = IORESOURCE_MEM, 117 }, 118 { 119 .start = INT_1610_GPIO_BANK2, 120 .flags = IORESOURCE_IRQ, 121 }, 122 }; 123 124 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = { 125 .virtual_irq_start = IH_GPIO_BASE + 16, 126 .bank_type = METHOD_GPIO_1610, 127 .bank_width = 16, 128 .regs = &omap16xx_gpio_regs, 129 }; 130 131 static struct platform_device omap16xx_gpio2 = { 132 .name = "omap_gpio", 133 .id = 2, 134 .dev = { 135 .platform_data = &omap16xx_gpio2_config, 136 }, 137 .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources), 138 .resource = omap16xx_gpio2_resources, 139 }; 140 141 /* gpio3 */ 142 static struct __initdata resource omap16xx_gpio3_resources[] = { 143 { 144 .start = OMAP1610_GPIO3_BASE, 145 .end = OMAP1610_GPIO3_BASE + SZ_2K - 1, 146 .flags = IORESOURCE_MEM, 147 }, 148 { 149 .start = INT_1610_GPIO_BANK3, 150 .flags = IORESOURCE_IRQ, 151 }, 152 }; 153 154 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = { 155 .virtual_irq_start = IH_GPIO_BASE + 32, 156 .bank_type = METHOD_GPIO_1610, 157 .bank_width = 16, 158 .regs = &omap16xx_gpio_regs, 159 }; 160 161 static struct platform_device omap16xx_gpio3 = { 162 .name = "omap_gpio", 163 .id = 3, 164 .dev = { 165 .platform_data = &omap16xx_gpio3_config, 166 }, 167 .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources), 168 .resource = omap16xx_gpio3_resources, 169 }; 170 171 /* gpio4 */ 172 static struct __initdata resource omap16xx_gpio4_resources[] = { 173 { 174 .start = OMAP1610_GPIO4_BASE, 175 .end = OMAP1610_GPIO4_BASE + SZ_2K - 1, 176 .flags = IORESOURCE_MEM, 177 }, 178 { 179 .start = INT_1610_GPIO_BANK4, 180 .flags = IORESOURCE_IRQ, 181 }, 182 }; 183 184 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = { 185 .virtual_irq_start = IH_GPIO_BASE + 48, 186 .bank_type = METHOD_GPIO_1610, 187 .bank_width = 16, 188 .regs = &omap16xx_gpio_regs, 189 }; 190 191 static struct platform_device omap16xx_gpio4 = { 192 .name = "omap_gpio", 193 .id = 4, 194 .dev = { 195 .platform_data = &omap16xx_gpio4_config, 196 }, 197 .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources), 198 .resource = omap16xx_gpio4_resources, 199 }; 200 201 static struct __initdata platform_device * omap16xx_gpio_dev[] = { 202 &omap16xx_mpu_gpio, 203 &omap16xx_gpio1, 204 &omap16xx_gpio2, 205 &omap16xx_gpio3, 206 &omap16xx_gpio4, 207 }; 208 209 /* 210 * omap16xx_gpio_init needs to be done before 211 * machine_init functions access gpio APIs. 212 * Hence omap16xx_gpio_init is a postcore_initcall. 213 */ 214 static int __init omap16xx_gpio_init(void) 215 { 216 int i; 217 218 if (!cpu_is_omap16xx()) 219 return -EINVAL; 220 221 for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) 222 platform_device_register(omap16xx_gpio_dev[i]); 223 224 gpio_bank_count = ARRAY_SIZE(omap16xx_gpio_dev); 225 226 return 0; 227 } 228 postcore_initcall(omap16xx_gpio_init); 229