linux/arch/arm/mach-ep93xx/edb93xx.c
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   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
  42static 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
  52static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
  53        .phy_id         = 1,
  54};
  55
  56
  57/*************************************************************************
  58 * EDB93xx i2c peripheral handling
  59 *************************************************************************/
  60
  61static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
  62        {
  63                I2C_BOARD_INFO("isl1208", 0x6f),
  64        },
  65};
  66
  67static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
  68        {
  69                I2C_BOARD_INFO("ds1337", 0x68),
  70        },
  71};
  72
  73static 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 *************************************************************************/
  90static struct cs4271_platform_data edb93xx_cs4271_data = {
  91        .gpio_nreset    = -EINVAL,      /* filled in later */
  92};
  93
  94static 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
 105static 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
 113static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
 114        /* Intentionally left blank */
 115};
 116
 117static 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 *************************************************************************/
 135static struct platform_device edb93xx_audio_device = {
 136        .name           = "edb93xx-audio",
 137        .id             = -1,
 138};
 139
 140static 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
 147static 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 *************************************************************************/
 159static 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 *************************************************************************/
 178static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
 179        .flags          = 0,
 180};
 181
 182static 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
 190static 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 *************************************************************************/
 207static 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
 218static void __init edb93xx_register_ide(void)
 219{
 220        if (!edb93xx_has_ide())
 221                return;
 222
 223        ep93xx_register_ide();
 224}
 225
 226
 227static 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
 243MACHINE_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,
 252MACHINE_END
 253#endif
 254
 255#ifdef CONFIG_MACH_EDB9302
 256MACHINE_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,
 265MACHINE_END
 266#endif
 267
 268#ifdef CONFIG_MACH_EDB9302A
 269MACHINE_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,
 278MACHINE_END
 279#endif
 280
 281#ifdef CONFIG_MACH_EDB9307
 282MACHINE_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,
 291MACHINE_END
 292#endif
 293
 294#ifdef CONFIG_MACH_EDB9307A
 295MACHINE_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,
 304MACHINE_END
 305#endif
 306
 307#ifdef CONFIG_MACH_EDB9312
 308MACHINE_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,
 317MACHINE_END
 318#endif
 319
 320#ifdef CONFIG_MACH_EDB9315
 321MACHINE_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,
 330MACHINE_END
 331#endif
 332
 333#ifdef CONFIG_MACH_EDB9315A
 334MACHINE_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,
 343MACHINE_END
 344#endif
 345