arch/arm/mach-mmp/ttc_dkb.c

   1 /*
   2  *  linux/arch/arm/mach-mmp/ttc_dkb.c
   3  *
   4  *  Support for the Marvell PXA910-based TTC_DKB Development Platform.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License version 2 as
   8  *  publishhed by the Free Software Foundation.
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/kernel.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/mtd/mtd.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/mtd/onenand.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/i2c/pca953x.h>
  19 #include <linux/gpio.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/flash.h>
  24 #include <mach/addr-map.h>
  25 #include <mach/mfp-pxa910.h>
  26 #include <mach/pxa910.h>
  27
  28 #include "common.h"
  29
  30 #define TTCDKB_GPIO_EXT0(x)     (NR_BUILTIN_GPIO + ((x < 0) ? 0 :       \
  31                                 ((x < 16) ? x : 15)))
  32 #define TTCDKB_GPIO_EXT1(x)     (NR_BUILTIN_GPIO + 16 + ((x < 0) ? 0 :  \
  33                                 ((x < 16) ? x : 15)))
  34
  35 /*
  36  * 16 board interrupts -- MAX7312 GPIO expander
  37  * 16 board interrupts -- PCA9575 GPIO expander
  38  * 24 board interrupts -- 88PM860x PMIC
  39  */
  40 #define TTCDKB_NR_IRQS          (IRQ_BOARD_START + 16 + 16 + 24)
  41
  42 static unsigned long ttc_dkb_pin_config[] __initdata = {
  43         /* UART2 */
  44         GPIO47_UART2_RXD,
  45         GPIO48_UART2_TXD,
  46
  47         /* DFI */
  48         DF_IO0_ND_IO0,
  49         DF_IO1_ND_IO1,
  50         DF_IO2_ND_IO2,
  51         DF_IO3_ND_IO3,
  52         DF_IO4_ND_IO4,
  53         DF_IO5_ND_IO5,
  54         DF_IO6_ND_IO6,
  55         DF_IO7_ND_IO7,
  56         DF_IO8_ND_IO8,
  57         DF_IO9_ND_IO9,
  58         DF_IO10_ND_IO10,
  59         DF_IO11_ND_IO11,
  60         DF_IO12_ND_IO12,
  61         DF_IO13_ND_IO13,
  62         DF_IO14_ND_IO14,
  63         DF_IO15_ND_IO15,
  64         DF_nCS0_SM_nCS2_nCS0,
  65         DF_ALE_SM_WEn_ND_ALE,
  66         DF_CLE_SM_OEn_ND_CLE,
  67         DF_WEn_DF_WEn,
  68         DF_REn_DF_REn,
  69         DF_RDY0_DF_RDY0,
  70 };
  71
  72 static struct mtd_partition ttc_dkb_onenand_partitions[] = {
  73         {
  74                 .name           = "bootloader",
  75                 .offset         = 0,
  76                 .size           = SZ_1M,
  77                 .mask_flags     = MTD_WRITEABLE,
  78         }, {
  79                 .name           = "reserved",
  80                 .offset         = MTDPART_OFS_APPEND,
  81                 .size           = SZ_128K,
  82                 .mask_flags     = MTD_WRITEABLE,
  83         }, {
  84                 .name           = "reserved",
  85                 .offset         = MTDPART_OFS_APPEND,
  86                 .size           = SZ_8M,
  87                 .mask_flags     = MTD_WRITEABLE,
  88         }, {
  89                 .name           = "kernel",
  90                 .offset         = MTDPART_OFS_APPEND,
  91                 .size           = (SZ_2M + SZ_1M),
  92                 .mask_flags     = 0,
  93         }, {
  94                 .name           = "filesystem",
  95                 .offset         = MTDPART_OFS_APPEND,
  96                 .size           = SZ_32M + SZ_16M,
  97                 .mask_flags     = 0,
  98         }
  99 };
 100
 101 static struct onenand_platform_data ttc_dkb_onenand_info = {
 102         .parts          = ttc_dkb_onenand_partitions,
 103         .nr_parts       = ARRAY_SIZE(ttc_dkb_onenand_partitions),
 104 };
 105
 106 static struct resource ttc_dkb_resource_onenand[] = {
 107         [0] = {
 108                 .start  = SMC_CS0_PHYS_BASE,
 109                 .end    = SMC_CS0_PHYS_BASE + SZ_1M,
 110                 .flags  = IORESOURCE_MEM,
 111         },
 112 };
 113
 114 static struct platform_device ttc_dkb_device_onenand = {
 115         .name           = "onenand-flash",
 116         .id             = -1,
 117         .resource       = ttc_dkb_resource_onenand,
 118         .num_resources  = ARRAY_SIZE(ttc_dkb_resource_onenand),
 119         .dev            = {
 120                 .platform_data  = &ttc_dkb_onenand_info,
 121         },
 122 };
 123
 124 static struct platform_device *ttc_dkb_devices[] = {
 125         &ttc_dkb_device_onenand,
 126 };
 127
 128 static struct pca953x_platform_data max7312_data[] = {
 129         {
 130                 .gpio_base      = TTCDKB_GPIO_EXT0(0),
 131                 .irq_base       = IRQ_BOARD_START,
 132         },
 133 };
 134
 135 static struct i2c_board_info ttc_dkb_i2c_info[] = {
 136         {
 137                 .type           = "max7312",
 138                 .addr           = 0x23,
 139                 .irq            = IRQ_GPIO(80),
 140                 .platform_data  = &max7312_data,
 141         },
 142 };
 143
 144 static void __init ttc_dkb_init(void)
 145 {
 146         mfp_config(ARRAY_AND_SIZE(ttc_dkb_pin_config));
 147
 148         /* on-chip devices */
 149         pxa910_add_uart(1);
 150
 151         /* off-chip devices */
 152         pxa910_add_twsi(0, NULL, ARRAY_AND_SIZE(ttc_dkb_i2c_info));
 153         platform_add_devices(ARRAY_AND_SIZE(ttc_dkb_devices));
 154 }
 155
 156 MACHINE_START(TTC_DKB, "PXA910-based TTC_DKB Development Platform")
 157         .map_io         = mmp_map_io,
 158         .nr_irqs        = TTCDKB_NR_IRQS,
 159         .init_irq       = pxa910_init_irq,
 160         .timer          = &pxa910_timer,
 161         .init_machine   = ttc_dkb_init,
 162 MACHINE_END