arch/arm/mach-sa1100/shannon.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/arch/arm/mach-sa1100/shannon.c
   4  */
   5
   6 #include <linux/init.h>
   7 #include <linux/device.h>
   8 #include <linux/gpio/machine.h>
   9 #include <linux/kernel.h>
  10 #include <linux/platform_data/sa11x0-serial.h>
  11 #include <linux/tty.h>
  12 #include <linux/mtd/mtd.h>
  13 #include <linux/mtd/partitions.h>
  14 #include <linux/regulator/fixed.h>
  15 #include <linux/regulator/machine.h>
  16
  17 #include <video/sa1100fb.h>
  18
  19 #include <mach/hardware.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/setup.h>
  22
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/flash.h>
  25 #include <asm/mach/map.h>
  26 #include <linux/platform_data/mfd-mcp-sa11x0.h>
  27 #include <mach/shannon.h>
  28 #include <mach/irqs.h>
  29
  30 #include "generic.h"
  31
  32 static struct mtd_partition shannon_partitions[] = {
  33         {
  34                 .name           = "BLOB boot loader",
  35                 .offset         = 0,
  36                 .size           = 0x20000
  37         },
  38         {
  39                 .name           = "kernel",
  40                 .offset         = MTDPART_OFS_APPEND,
  41                 .size           = 0xe0000
  42         },
  43         {
  44                 .name           = "initrd",
  45                 .offset         = MTDPART_OFS_APPEND,
  46                 .size           = MTDPART_SIZ_FULL
  47         }
  48 };
  49
  50 static struct flash_platform_data shannon_flash_data = {
  51         .map_name       = "cfi_probe",
  52         .parts          = shannon_partitions,
  53         .nr_parts       = ARRAY_SIZE(shannon_partitions),
  54 };
  55
  56 static struct resource shannon_flash_resource =
  57         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_4M);
  58
  59 static struct mcp_plat_data shannon_mcp_data = {
  60         .mccr0          = MCCR0_ADM,
  61         .sclk_rate      = 11981000,
  62 };
  63
  64 static struct sa1100fb_mach_info shannon_lcd_info = {
  65         .pixclock       = 152500,       .bpp            = 8,
  66         .xres           = 640,          .yres           = 480,
  67
  68         .hsync_len      = 4,            .vsync_len      = 3,
  69         .left_margin    = 2,            .upper_margin   = 0,
  70         .right_margin   = 1,            .lower_margin   = 0,
  71
  72         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  73
  74         .lccr0          = LCCR0_Color | LCCR0_Dual | LCCR0_Pas,
  75         .lccr3          = LCCR3_ACBsDiv(512),
  76 };
  77
  78 static struct gpiod_lookup_table shannon_pcmcia0_gpio_table = {
  79         .dev_id = "sa11x0-pcmcia.0",
  80         .table = {
  81                 GPIO_LOOKUP("gpio", 24, "detect", GPIO_ACTIVE_LOW),
  82                 GPIO_LOOKUP("gpio", 26, "ready", GPIO_ACTIVE_HIGH),
  83                 { },
  84         },
  85 };
  86
  87 static struct gpiod_lookup_table shannon_pcmcia1_gpio_table = {
  88         .dev_id = "sa11x0-pcmcia.1",
  89         .table = {
  90                 GPIO_LOOKUP("gpio", 25, "detect", GPIO_ACTIVE_LOW),
  91                 GPIO_LOOKUP("gpio", 27, "ready", GPIO_ACTIVE_HIGH),
  92                 { },
  93         },
  94 };
  95
  96 static struct regulator_consumer_supply shannon_cf_vcc_consumers[] = {
  97         REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.0"),
  98         REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.1"),
  99 };
 100
 101 static struct fixed_voltage_config shannon_cf_vcc_pdata __initdata = {
 102         .supply_name = "cf-power",
 103         .microvolts = 3300000,
 104         .enabled_at_boot = 1,
 105 };
 106
 107 static struct gpiod_lookup_table shannon_display_gpio_table = {
 108         .dev_id = "sa11x0-fb",
 109         .table = {
 110                 GPIO_LOOKUP("gpio", 22, "shannon-lcden", GPIO_ACTIVE_HIGH),
 111                 { },
 112         },
 113 };
 114
 115 static void __init shannon_init(void)
 116 {
 117         sa11x0_register_fixed_regulator(0, &shannon_cf_vcc_pdata,
 118                                         shannon_cf_vcc_consumers,
 119                                         ARRAY_SIZE(shannon_cf_vcc_consumers),
 120                                         false);
 121         sa11x0_register_pcmcia(0, &shannon_pcmcia0_gpio_table);
 122         sa11x0_register_pcmcia(1, &shannon_pcmcia1_gpio_table);
 123         sa11x0_ppc_configure_mcp();
 124         gpiod_add_lookup_table(&shannon_display_gpio_table);
 125         sa11x0_register_lcd(&shannon_lcd_info);
 126         sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1);
 127         sa11x0_register_mcp(&shannon_mcp_data);
 128 }
 129
 130 static void __init shannon_map_io(void)
 131 {
 132         sa1100_map_io();
 133
 134         sa1100_register_uart(0, 3);
 135         sa1100_register_uart(1, 1);
 136
 137         Ser1SDCR0 |= SDCR0_SUS;
 138         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 139         GPDR |= GPIO_UART_TXD | SHANNON_GPIO_CODEC_RESET;
 140         GPDR &= ~GPIO_UART_RXD;
 141         PPAR |= PPAR_UPR;
 142
 143         /* reset the codec */
 144         GPCR = SHANNON_GPIO_CODEC_RESET;
 145         GPSR = SHANNON_GPIO_CODEC_RESET;
 146 }
 147
 148 MACHINE_START(SHANNON, "Shannon (AKA: Tuxscreen)")
 149         .atag_offset    = 0x100,
 150         .map_io         = shannon_map_io,
 151         .nr_irqs        = SA1100_NR_IRQS,
 152         .init_irq       = sa1100_init_irq,
 153         .init_time      = sa1100_timer_init,
 154         .init_machine   = shannon_init,
 155         .init_late      = sa11x0_init_late,
 156         .restart        = sa11x0_restart,
 157 MACHINE_END