root/arch/arm/mach-ep93xx/edb93xx.c

DEFINITIONS

1. edb93xx_register_flash
2. edb93xx_register_i2c
3. edb93xx_register_spi
4. edb93xx_has_audio
5. edb93xx_register_i2s
6. edb93xx_register_pwm
7. edb93xx_has_fb
8. edb93xx_register_fb
9. edb93xx_has_ide
10. edb93xx_register_ide
11. edb93xx_init_machine

   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