1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * arch/arm/mach-ep93xx/edb93xx.c 4 * Cirrus Logic EDB93xx Development Board support. 5 * 6 * EDB93XX, EDB9301, EDB9307A 7 * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com> 8 * 9 * EDB9302 10 * Copyright (C) 2006 George Kashperko <george@chas.com.ua> 11 * 12 * EDB9302A, EDB9315, EDB9315A 13 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> 14 * 15 * EDB9307 16 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org> 17 * 18 * EDB9312 19 * Copyright (C) 2006 Infosys Technologies Limited 20 * Toufeeq Hussain <toufeeq_hussain@infosys.com> 21 */ 22 23 #include <linux/kernel.h> 24 #include <linux/init.h> 25 #include <linux/platform_device.h> 26 #include <linux/i2c.h> 27 #include <linux/spi/spi.h> 28 #include <linux/gpio/machine.h> 29 30 #include <sound/cs4271.h> 31 32 #include "hardware.h" 33 #include <linux/platform_data/video-ep93xx.h> 34 #include <linux/platform_data/spi-ep93xx.h> 35 #include "gpio-ep93xx.h" 36 37 #include <asm/mach-types.h> 38 #include <asm/mach/arch.h> 39 40 #include "soc.h" 41 42 static void __init edb93xx_register_flash(void) 43 { 44 if (machine_is_edb9307() || machine_is_edb9312() || 45 machine_is_edb9315()) { 46 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M); 47 } else { 48 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); 49 } 50 } 51 52 static struct ep93xx_eth_data __initdata edb93xx_eth_data = { 53 .phy_id = 1, 54 }; 55 56 57 /************************************************************************* 58 * EDB93xx i2c peripheral handling 59 *************************************************************************/ 60 61 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { 62 { 63 I2C_BOARD_INFO("isl1208", 0x6f), 64 }, 65 }; 66 67 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = { 68 { 69 I2C_BOARD_INFO("ds1337", 0x68), 70 }, 71 }; 72 73 static void __init edb93xx_register_i2c(void) 74 { 75 if (machine_is_edb9302a() || machine_is_edb9307a() || 76 machine_is_edb9315a()) { 77 ep93xx_register_i2c(edb93xxa_i2c_board_info, 78 ARRAY_SIZE(edb93xxa_i2c_board_info)); 79 } else if (machine_is_edb9302() || machine_is_edb9307() 80 || machine_is_edb9312() || machine_is_edb9315()) { 81 ep93xx_register_i2c(edb93xx_i2c_board_info, 82 ARRAY_SIZE(edb93xx_i2c_board_info)); 83 } 84 } 85 86 87 /************************************************************************* 88 * EDB93xx SPI peripheral handling 89 *************************************************************************/ 90 static struct cs4271_platform_data edb93xx_cs4271_data = { 91 .gpio_nreset = -EINVAL, /* filled in later */ 92 }; 93 94 static struct spi_board_info edb93xx_spi_board_info[] __initdata = { 95 { 96 .modalias = "cs4271", 97 .platform_data = &edb93xx_cs4271_data, 98 .max_speed_hz = 6000000, 99 .bus_num = 0, 100 .chip_select = 0, 101 .mode = SPI_MODE_3, 102 }, 103 }; 104 105 static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = { 106 .dev_id = "spi0", 107 .table = { 108 GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW), 109 { }, 110 }, 111 }; 112 113 static struct ep93xx_spi_info edb93xx_spi_info __initdata = { 114 /* Intentionally left blank */ 115 }; 116 117 static void __init edb93xx_register_spi(void) 118 { 119 if (machine_is_edb9301() || machine_is_edb9302()) 120 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; 121 else if (machine_is_edb9302a() || machine_is_edb9307a()) 122 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); 123 else if (machine_is_edb9315a()) 124 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; 125 126 gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table); 127 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, 128 ARRAY_SIZE(edb93xx_spi_board_info)); 129 } 130 131 132 /************************************************************************* 133 * EDB93xx I2S 134 *************************************************************************/ 135 static struct platform_device edb93xx_audio_device = { 136 .name = "edb93xx-audio", 137 .id = -1, 138 }; 139 140 static int __init edb93xx_has_audio(void) 141 { 142 return (machine_is_edb9301() || machine_is_edb9302() || 143 machine_is_edb9302a() || machine_is_edb9307a() || 144 machine_is_edb9315a()); 145 } 146 147 static void __init edb93xx_register_i2s(void) 148 { 149 if (edb93xx_has_audio()) { 150 ep93xx_register_i2s(); 151 platform_device_register(&edb93xx_audio_device); 152 } 153 } 154 155 156 /************************************************************************* 157 * EDB93xx pwm 158 *************************************************************************/ 159 static void __init edb93xx_register_pwm(void) 160 { 161 if (machine_is_edb9301() || 162 machine_is_edb9302() || machine_is_edb9302a()) { 163 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */ 164 ep93xx_register_pwm(0, 1); 165 } else if (machine_is_edb9307() || machine_is_edb9307a()) { 166 /* EP9307 only has pwm.0 (PWMOUT) */ 167 ep93xx_register_pwm(1, 0); 168 } else { 169 /* EP9312 and EP9315 have both */ 170 ep93xx_register_pwm(1, 1); 171 } 172 } 173 174 175 /************************************************************************* 176 * EDB93xx framebuffer 177 *************************************************************************/ 178 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = { 179 .flags = 0, 180 }; 181 182 static int __init edb93xx_has_fb(void) 183 { 184 /* These platforms have an ep93xx with video capability */ 185 return machine_is_edb9307() || machine_is_edb9307a() || 186 machine_is_edb9312() || machine_is_edb9315() || 187 machine_is_edb9315a(); 188 } 189 190 static void __init edb93xx_register_fb(void) 191 { 192 if (!edb93xx_has_fb()) 193 return; 194 195 if (machine_is_edb9307a() || machine_is_edb9315a()) 196 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0; 197 else 198 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3; 199 200 ep93xx_register_fb(&edb93xxfb_info); 201 } 202 203 204 /************************************************************************* 205 * EDB93xx IDE 206 *************************************************************************/ 207 static int __init edb93xx_has_ide(void) 208 { 209 /* 210 * Although EDB9312 and EDB9315 do have IDE capability, they have 211 * INTRQ line wired as pull-up, which makes using IDE interface 212 * problematic. 213 */ 214 return machine_is_edb9312() || machine_is_edb9315() || 215 machine_is_edb9315a(); 216 } 217 218 static void __init edb93xx_register_ide(void) 219 { 220 if (!edb93xx_has_ide()) 221 return; 222 223 ep93xx_register_ide(); 224 } 225 226 227 static void __init edb93xx_init_machine(void) 228 { 229 ep93xx_init_devices(); 230 edb93xx_register_flash(); 231 ep93xx_register_eth(&edb93xx_eth_data, 1); 232 edb93xx_register_i2c(); 233 edb93xx_register_spi(); 234 edb93xx_register_i2s(); 235 edb93xx_register_pwm(); 236 edb93xx_register_fb(); 237 edb93xx_register_ide(); 238 ep93xx_register_adc(); 239 } 240 241 242 #ifdef CONFIG_MACH_EDB9301 243 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board") 244 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 245 .atag_offset = 0x100, 246 .map_io = ep93xx_map_io, 247 .init_irq = ep93xx_init_irq, 248 .init_time = ep93xx_timer_init, 249 .init_machine = edb93xx_init_machine, 250 .init_late = ep93xx_init_late, 251 .restart = ep93xx_restart, 252 MACHINE_END 253 #endif 254 255 #ifdef CONFIG_MACH_EDB9302 256 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board") 257 /* Maintainer: George Kashperko <george@chas.com.ua> */ 258 .atag_offset = 0x100, 259 .map_io = ep93xx_map_io, 260 .init_irq = ep93xx_init_irq, 261 .init_time = ep93xx_timer_init, 262 .init_machine = edb93xx_init_machine, 263 .init_late = ep93xx_init_late, 264 .restart = ep93xx_restart, 265 MACHINE_END 266 #endif 267 268 #ifdef CONFIG_MACH_EDB9302A 269 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board") 270 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 271 .atag_offset = 0x100, 272 .map_io = ep93xx_map_io, 273 .init_irq = ep93xx_init_irq, 274 .init_time = ep93xx_timer_init, 275 .init_machine = edb93xx_init_machine, 276 .init_late = ep93xx_init_late, 277 .restart = ep93xx_restart, 278 MACHINE_END 279 #endif 280 281 #ifdef CONFIG_MACH_EDB9307 282 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board") 283 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */ 284 .atag_offset = 0x100, 285 .map_io = ep93xx_map_io, 286 .init_irq = ep93xx_init_irq, 287 .init_time = ep93xx_timer_init, 288 .init_machine = edb93xx_init_machine, 289 .init_late = ep93xx_init_late, 290 .restart = ep93xx_restart, 291 MACHINE_END 292 #endif 293 294 #ifdef CONFIG_MACH_EDB9307A 295 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") 296 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 297 .atag_offset = 0x100, 298 .map_io = ep93xx_map_io, 299 .init_irq = ep93xx_init_irq, 300 .init_time = ep93xx_timer_init, 301 .init_machine = edb93xx_init_machine, 302 .init_late = ep93xx_init_late, 303 .restart = ep93xx_restart, 304 MACHINE_END 305 #endif 306 307 #ifdef CONFIG_MACH_EDB9312 308 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board") 309 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */ 310 .atag_offset = 0x100, 311 .map_io = ep93xx_map_io, 312 .init_irq = ep93xx_init_irq, 313 .init_time = ep93xx_timer_init, 314 .init_machine = edb93xx_init_machine, 315 .init_late = ep93xx_init_late, 316 .restart = ep93xx_restart, 317 MACHINE_END 318 #endif 319 320 #ifdef CONFIG_MACH_EDB9315 321 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board") 322 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 323 .atag_offset = 0x100, 324 .map_io = ep93xx_map_io, 325 .init_irq = ep93xx_init_irq, 326 .init_time = ep93xx_timer_init, 327 .init_machine = edb93xx_init_machine, 328 .init_late = ep93xx_init_late, 329 .restart = ep93xx_restart, 330 MACHINE_END 331 #endif 332 333 #ifdef CONFIG_MACH_EDB9315A 334 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board") 335 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 336 .atag_offset = 0x100, 337 .map_io = ep93xx_map_io, 338 .init_irq = ep93xx_init_irq, 339 .init_time = ep93xx_timer_init, 340 .init_machine = edb93xx_init_machine, 341 .init_late = ep93xx_init_late, 342 .restart = ep93xx_restart, 343 MACHINE_END 344 #endif 345