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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * arch/arm/mach-ep93xx/edb93xx.c
0004  * Cirrus Logic EDB93xx Development Board support.
0005  *
0006  * EDB93XX, EDB9301, EDB9307A
0007  * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com>
0008  *
0009  * EDB9302
0010  * Copyright (C) 2006 George Kashperko <george@chas.com.ua>
0011  *
0012  * EDB9302A, EDB9315, EDB9315A
0013  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
0014  *
0015  * EDB9307
0016  * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
0017  *
0018  * EDB9312
0019  * Copyright (C) 2006 Infosys Technologies Limited
0020  *                    Toufeeq Hussain <toufeeq_hussain@infosys.com>
0021  */
0022 
0023 #include <linux/kernel.h>
0024 #include <linux/init.h>
0025 #include <linux/platform_device.h>
0026 #include <linux/i2c.h>
0027 #include <linux/spi/spi.h>
0028 #include <linux/gpio/machine.h>
0029 
0030 #include <sound/cs4271.h>
0031 
0032 #include "hardware.h"
0033 #include <linux/platform_data/video-ep93xx.h>
0034 #include <linux/platform_data/spi-ep93xx.h>
0035 #include "gpio-ep93xx.h"
0036 
0037 #include <asm/mach-types.h>
0038 #include <asm/mach/arch.h>
0039 
0040 #include "soc.h"
0041 
0042 static void __init edb93xx_register_flash(void)
0043 {
0044     if (machine_is_edb9307() || machine_is_edb9312() ||
0045         machine_is_edb9315()) {
0046         ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
0047     } else {
0048         ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
0049     }
0050 }
0051 
0052 static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
0053     .phy_id     = 1,
0054 };
0055 
0056 
0057 /*************************************************************************
0058  * EDB93xx i2c peripheral handling
0059  *************************************************************************/
0060 
0061 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
0062     {
0063         I2C_BOARD_INFO("isl1208", 0x6f),
0064     },
0065 };
0066 
0067 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
0068     {
0069         I2C_BOARD_INFO("ds1337", 0x68),
0070     },
0071 };
0072 
0073 static void __init edb93xx_register_i2c(void)
0074 {
0075     if (machine_is_edb9302a() || machine_is_edb9307a() ||
0076         machine_is_edb9315a()) {
0077         ep93xx_register_i2c(edb93xxa_i2c_board_info,
0078                     ARRAY_SIZE(edb93xxa_i2c_board_info));
0079     } else if (machine_is_edb9302() || machine_is_edb9307()
0080         || machine_is_edb9312() || machine_is_edb9315()) {
0081         ep93xx_register_i2c(edb93xx_i2c_board_info,
0082                     ARRAY_SIZE(edb93xx_i2c_board_info));
0083     }
0084 }
0085 
0086 
0087 /*************************************************************************
0088  * EDB93xx SPI peripheral handling
0089  *************************************************************************/
0090 static struct cs4271_platform_data edb93xx_cs4271_data = {
0091     .gpio_nreset    = -EINVAL,  /* filled in later */
0092 };
0093 
0094 static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
0095     {
0096         .modalias       = "cs4271",
0097         .platform_data      = &edb93xx_cs4271_data,
0098         .max_speed_hz       = 6000000,
0099         .bus_num        = 0,
0100         .chip_select        = 0,
0101         .mode           = SPI_MODE_3,
0102     },
0103 };
0104 
0105 static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
0106     .dev_id = "spi0",
0107     .table = {
0108         GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
0109         { },
0110     },
0111 };
0112 
0113 static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
0114     /* Intentionally left blank */
0115 };
0116 
0117 static void __init edb93xx_register_spi(void)
0118 {
0119     if (machine_is_edb9301() || machine_is_edb9302())
0120         edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
0121     else if (machine_is_edb9302a() || machine_is_edb9307a())
0122         edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
0123     else if (machine_is_edb9315a())
0124         edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
0125 
0126     gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table);
0127     ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
0128                 ARRAY_SIZE(edb93xx_spi_board_info));
0129 }
0130 
0131 
0132 /*************************************************************************
0133  * EDB93xx I2S
0134  *************************************************************************/
0135 static struct platform_device edb93xx_audio_device = {
0136     .name       = "edb93xx-audio",
0137     .id     = -1,
0138 };
0139 
0140 static int __init edb93xx_has_audio(void)
0141 {
0142     return (machine_is_edb9301() || machine_is_edb9302() ||
0143         machine_is_edb9302a() || machine_is_edb9307a() ||
0144         machine_is_edb9315a());
0145 }
0146 
0147 static void __init edb93xx_register_i2s(void)
0148 {
0149     if (edb93xx_has_audio()) {
0150         ep93xx_register_i2s();
0151         platform_device_register(&edb93xx_audio_device);
0152     }
0153 }
0154 
0155 
0156 /*************************************************************************
0157  * EDB93xx pwm
0158  *************************************************************************/
0159 static void __init edb93xx_register_pwm(void)
0160 {
0161     if (machine_is_edb9301() ||
0162         machine_is_edb9302() || machine_is_edb9302a()) {
0163         /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
0164         ep93xx_register_pwm(0, 1);
0165     } else if (machine_is_edb9307() || machine_is_edb9307a()) {
0166         /* EP9307 only has pwm.0 (PWMOUT) */
0167         ep93xx_register_pwm(1, 0);
0168     } else {
0169         /* EP9312 and EP9315 have both */
0170         ep93xx_register_pwm(1, 1);
0171     }
0172 }
0173 
0174 
0175 /*************************************************************************
0176  * EDB93xx framebuffer
0177  *************************************************************************/
0178 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
0179     .flags      = 0,
0180 };
0181 
0182 static int __init edb93xx_has_fb(void)
0183 {
0184     /* These platforms have an ep93xx with video capability */
0185     return machine_is_edb9307() || machine_is_edb9307a() ||
0186            machine_is_edb9312() || machine_is_edb9315() ||
0187            machine_is_edb9315a();
0188 }
0189 
0190 static void __init edb93xx_register_fb(void)
0191 {
0192     if (!edb93xx_has_fb())
0193         return;
0194 
0195     if (machine_is_edb9307a() || machine_is_edb9315a())
0196         edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
0197     else
0198         edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
0199 
0200     ep93xx_register_fb(&edb93xxfb_info);
0201 }
0202 
0203 
0204 /*************************************************************************
0205  * EDB93xx IDE
0206  *************************************************************************/
0207 static int __init edb93xx_has_ide(void)
0208 {
0209     /*
0210      * Although EDB9312 and EDB9315 do have IDE capability, they have
0211      * INTRQ line wired as pull-up, which makes using IDE interface
0212      * problematic.
0213      */
0214     return machine_is_edb9312() || machine_is_edb9315() ||
0215            machine_is_edb9315a();
0216 }
0217 
0218 static void __init edb93xx_register_ide(void)
0219 {
0220     if (!edb93xx_has_ide())
0221         return;
0222 
0223     ep93xx_register_ide();
0224 }
0225 
0226 
0227 static void __init edb93xx_init_machine(void)
0228 {
0229     ep93xx_init_devices();
0230     edb93xx_register_flash();
0231     ep93xx_register_eth(&edb93xx_eth_data, 1);
0232     edb93xx_register_i2c();
0233     edb93xx_register_spi();
0234     edb93xx_register_i2s();
0235     edb93xx_register_pwm();
0236     edb93xx_register_fb();
0237     edb93xx_register_ide();
0238     ep93xx_register_adc();
0239 }
0240 
0241 
0242 #ifdef CONFIG_MACH_EDB9301
0243 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
0244     /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
0245     .atag_offset    = 0x100,
0246     .nr_irqs    = NR_EP93XX_IRQS,
0247     .map_io     = ep93xx_map_io,
0248     .init_irq   = ep93xx_init_irq,
0249     .init_time  = ep93xx_timer_init,
0250     .init_machine   = edb93xx_init_machine,
0251     .restart    = ep93xx_restart,
0252 MACHINE_END
0253 #endif
0254 
0255 #ifdef CONFIG_MACH_EDB9302
0256 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
0257     /* Maintainer: George Kashperko <george@chas.com.ua> */
0258     .atag_offset    = 0x100,
0259     .nr_irqs    = NR_EP93XX_IRQS,
0260     .map_io     = ep93xx_map_io,
0261     .init_irq   = ep93xx_init_irq,
0262     .init_time  = ep93xx_timer_init,
0263     .init_machine   = edb93xx_init_machine,
0264     .restart    = ep93xx_restart,
0265 MACHINE_END
0266 #endif
0267 
0268 #ifdef CONFIG_MACH_EDB9302A
0269 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
0270     /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
0271     .atag_offset    = 0x100,
0272     .nr_irqs    = NR_EP93XX_IRQS,
0273     .map_io     = ep93xx_map_io,
0274     .init_irq   = ep93xx_init_irq,
0275     .init_time  = ep93xx_timer_init,
0276     .init_machine   = edb93xx_init_machine,
0277     .restart    = ep93xx_restart,
0278 MACHINE_END
0279 #endif
0280 
0281 #ifdef CONFIG_MACH_EDB9307
0282 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
0283     /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
0284     .atag_offset    = 0x100,
0285     .nr_irqs    = NR_EP93XX_IRQS,
0286     .map_io     = ep93xx_map_io,
0287     .init_irq   = ep93xx_init_irq,
0288     .init_time  = ep93xx_timer_init,
0289     .init_machine   = edb93xx_init_machine,
0290     .restart    = ep93xx_restart,
0291 MACHINE_END
0292 #endif
0293 
0294 #ifdef CONFIG_MACH_EDB9307A
0295 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
0296     /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
0297     .atag_offset    = 0x100,
0298     .nr_irqs    = NR_EP93XX_IRQS,
0299     .map_io     = ep93xx_map_io,
0300     .init_irq   = ep93xx_init_irq,
0301     .init_time  = ep93xx_timer_init,
0302     .init_machine   = edb93xx_init_machine,
0303     .restart    = ep93xx_restart,
0304 MACHINE_END
0305 #endif
0306 
0307 #ifdef CONFIG_MACH_EDB9312
0308 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
0309     /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
0310     .atag_offset    = 0x100,
0311     .nr_irqs    = NR_EP93XX_IRQS,
0312     .map_io     = ep93xx_map_io,
0313     .init_irq   = ep93xx_init_irq,
0314     .init_time  = ep93xx_timer_init,
0315     .init_machine   = edb93xx_init_machine,
0316     .restart    = ep93xx_restart,
0317 MACHINE_END
0318 #endif
0319 
0320 #ifdef CONFIG_MACH_EDB9315
0321 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
0322     /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
0323     .atag_offset    = 0x100,
0324     .nr_irqs    = NR_EP93XX_IRQS,
0325     .map_io     = ep93xx_map_io,
0326     .init_irq   = ep93xx_init_irq,
0327     .init_time  = ep93xx_timer_init,
0328     .init_machine   = edb93xx_init_machine,
0329     .restart    = ep93xx_restart,
0330 MACHINE_END
0331 #endif
0332 
0333 #ifdef CONFIG_MACH_EDB9315A
0334 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
0335     /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
0336     .atag_offset    = 0x100,
0337     .nr_irqs    = NR_EP93XX_IRQS,
0338     .map_io     = ep93xx_map_io,
0339     .init_irq   = ep93xx_init_irq,
0340     .init_time  = ep93xx_timer_init,
0341     .init_machine   = edb93xx_init_machine,
0342     .restart    = ep93xx_restart,
0343 MACHINE_END
0344 #endif
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