arch/arm/mach-ep93xx/edb93xx.c

   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         .restart        = ep93xx_restart,
 251 MACHINE_END
 252 #endif
 253
 254 #ifdef CONFIG_MACH_EDB9302
 255 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
 256         /* Maintainer: George Kashperko <george@chas.com.ua> */
 257         .atag_offset    = 0x100,
 258         .map_io         = ep93xx_map_io,
 259         .init_irq       = ep93xx_init_irq,
 260         .init_time      = ep93xx_timer_init,
 261         .init_machine   = edb93xx_init_machine,
 262         .restart        = ep93xx_restart,
 263 MACHINE_END
 264 #endif
 265
 266 #ifdef CONFIG_MACH_EDB9302A
 267 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
 268         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 269         .atag_offset    = 0x100,
 270         .map_io         = ep93xx_map_io,
 271         .init_irq       = ep93xx_init_irq,
 272         .init_time      = ep93xx_timer_init,
 273         .init_machine   = edb93xx_init_machine,
 274         .restart        = ep93xx_restart,
 275 MACHINE_END
 276 #endif
 277
 278 #ifdef CONFIG_MACH_EDB9307
 279 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
 280         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 281         .atag_offset    = 0x100,
 282         .map_io         = ep93xx_map_io,
 283         .init_irq       = ep93xx_init_irq,
 284         .init_time      = ep93xx_timer_init,
 285         .init_machine   = edb93xx_init_machine,
 286         .restart        = ep93xx_restart,
 287 MACHINE_END
 288 #endif
 289
 290 #ifdef CONFIG_MACH_EDB9307A
 291 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
 292         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 293         .atag_offset    = 0x100,
 294         .map_io         = ep93xx_map_io,
 295         .init_irq       = ep93xx_init_irq,
 296         .init_time      = ep93xx_timer_init,
 297         .init_machine   = edb93xx_init_machine,
 298         .restart        = ep93xx_restart,
 299 MACHINE_END
 300 #endif
 301
 302 #ifdef CONFIG_MACH_EDB9312
 303 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
 304         /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
 305         .atag_offset    = 0x100,
 306         .map_io         = ep93xx_map_io,
 307         .init_irq       = ep93xx_init_irq,
 308         .init_time      = ep93xx_timer_init,
 309         .init_machine   = edb93xx_init_machine,
 310         .restart        = ep93xx_restart,
 311 MACHINE_END
 312 #endif
 313
 314 #ifdef CONFIG_MACH_EDB9315
 315 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
 316         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 317         .atag_offset    = 0x100,
 318         .map_io         = ep93xx_map_io,
 319         .init_irq       = ep93xx_init_irq,
 320         .init_time      = ep93xx_timer_init,
 321         .init_machine   = edb93xx_init_machine,
 322         .restart        = ep93xx_restart,
 323 MACHINE_END
 324 #endif
 325
 326 #ifdef CONFIG_MACH_EDB9315A
 327 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
 328         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 329         .atag_offset    = 0x100,
 330         .map_io         = ep93xx_map_io,
 331         .init_irq       = ep93xx_init_irq,
 332         .init_time      = ep93xx_timer_init,
 333         .init_machine   = edb93xx_init_machine,
 334         .restart        = ep93xx_restart,
 335 MACHINE_END
 336 #endif