arch/arm/mach-spear/spear300.c

   1 /*
   2  * arch/arm/mach-spear3xx/spear300.c
   3  *
   4  * SPEAr300 machine source file
   5  *
   6  * Copyright (C) 2009-2012 ST Microelectronics
   7  * Viresh Kumar <viresh.linux@gmail.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #define pr_fmt(fmt) "SPEAr300: " fmt
  15
  16 #include <linux/amba/pl08x.h>
  17 #include <linux/of_platform.h>
  18 #include <asm/mach/arch.h>
  19 #include "generic.h"
  20 #include <mach/spear.h>
  21
  22 /* DMAC platform data's slave info */
  23 struct pl08x_channel_data spear300_dma_info[] = {
  24         {
  25                 .bus_id = "uart0_rx",
  26                 .min_signal = 2,
  27                 .max_signal = 2,
  28                 .muxval = 0,
  29                 .periph_buses = PL08X_AHB1,
  30         }, {
  31                 .bus_id = "uart0_tx",
  32                 .min_signal = 3,
  33                 .max_signal = 3,
  34                 .muxval = 0,
  35                 .periph_buses = PL08X_AHB1,
  36         }, {
  37                 .bus_id = "ssp0_rx",
  38                 .min_signal = 8,
  39                 .max_signal = 8,
  40                 .muxval = 0,
  41                 .periph_buses = PL08X_AHB1,
  42         }, {
  43                 .bus_id = "ssp0_tx",
  44                 .min_signal = 9,
  45                 .max_signal = 9,
  46                 .muxval = 0,
  47                 .periph_buses = PL08X_AHB1,
  48         }, {
  49                 .bus_id = "i2c_rx",
  50                 .min_signal = 10,
  51                 .max_signal = 10,
  52                 .muxval = 0,
  53                 .periph_buses = PL08X_AHB1,
  54         }, {
  55                 .bus_id = "i2c_tx",
  56                 .min_signal = 11,
  57                 .max_signal = 11,
  58                 .muxval = 0,
  59                 .periph_buses = PL08X_AHB1,
  60         }, {
  61                 .bus_id = "irda",
  62                 .min_signal = 12,
  63                 .max_signal = 12,
  64                 .muxval = 0,
  65                 .periph_buses = PL08X_AHB1,
  66         }, {
  67                 .bus_id = "adc",
  68                 .min_signal = 13,
  69                 .max_signal = 13,
  70                 .muxval = 0,
  71                 .periph_buses = PL08X_AHB1,
  72         }, {
  73                 .bus_id = "to_jpeg",
  74                 .min_signal = 14,
  75                 .max_signal = 14,
  76                 .muxval = 0,
  77                 .periph_buses = PL08X_AHB1,
  78         }, {
  79                 .bus_id = "from_jpeg",
  80                 .min_signal = 15,
  81                 .max_signal = 15,
  82                 .muxval = 0,
  83                 .periph_buses = PL08X_AHB1,
  84         }, {
  85                 .bus_id = "ras0_rx",
  86                 .min_signal = 0,
  87                 .max_signal = 0,
  88                 .muxval = 1,
  89                 .periph_buses = PL08X_AHB1,
  90         }, {
  91                 .bus_id = "ras0_tx",
  92                 .min_signal = 1,
  93                 .max_signal = 1,
  94                 .muxval = 1,
  95                 .periph_buses = PL08X_AHB1,
  96         }, {
  97                 .bus_id = "ras1_rx",
  98                 .min_signal = 2,
  99                 .max_signal = 2,
 100                 .muxval = 1,
 101                 .periph_buses = PL08X_AHB1,
 102         }, {
 103                 .bus_id = "ras1_tx",
 104                 .min_signal = 3,
 105                 .max_signal = 3,
 106                 .muxval = 1,
 107                 .periph_buses = PL08X_AHB1,
 108         }, {
 109                 .bus_id = "ras2_rx",
 110                 .min_signal = 4,
 111                 .max_signal = 4,
 112                 .muxval = 1,
 113                 .periph_buses = PL08X_AHB1,
 114         }, {
 115                 .bus_id = "ras2_tx",
 116                 .min_signal = 5,
 117                 .max_signal = 5,
 118                 .muxval = 1,
 119                 .periph_buses = PL08X_AHB1,
 120         }, {
 121                 .bus_id = "ras3_rx",
 122                 .min_signal = 6,
 123                 .max_signal = 6,
 124                 .muxval = 1,
 125                 .periph_buses = PL08X_AHB1,
 126         }, {
 127                 .bus_id = "ras3_tx",
 128                 .min_signal = 7,
 129                 .max_signal = 7,
 130                 .muxval = 1,
 131                 .periph_buses = PL08X_AHB1,
 132         }, {
 133                 .bus_id = "ras4_rx",
 134                 .min_signal = 8,
 135                 .max_signal = 8,
 136                 .muxval = 1,
 137                 .periph_buses = PL08X_AHB1,
 138         }, {
 139                 .bus_id = "ras4_tx",
 140                 .min_signal = 9,
 141                 .max_signal = 9,
 142                 .muxval = 1,
 143                 .periph_buses = PL08X_AHB1,
 144         }, {
 145                 .bus_id = "ras5_rx",
 146                 .min_signal = 10,
 147                 .max_signal = 10,
 148                 .muxval = 1,
 149                 .periph_buses = PL08X_AHB1,
 150         }, {
 151                 .bus_id = "ras5_tx",
 152                 .min_signal = 11,
 153                 .max_signal = 11,
 154                 .muxval = 1,
 155                 .periph_buses = PL08X_AHB1,
 156         }, {
 157                 .bus_id = "ras6_rx",
 158                 .min_signal = 12,
 159                 .max_signal = 12,
 160                 .muxval = 1,
 161                 .periph_buses = PL08X_AHB1,
 162         }, {
 163                 .bus_id = "ras6_tx",
 164                 .min_signal = 13,
 165                 .max_signal = 13,
 166                 .muxval = 1,
 167                 .periph_buses = PL08X_AHB1,
 168         }, {
 169                 .bus_id = "ras7_rx",
 170                 .min_signal = 14,
 171                 .max_signal = 14,
 172                 .muxval = 1,
 173                 .periph_buses = PL08X_AHB1,
 174         }, {
 175                 .bus_id = "ras7_tx",
 176                 .min_signal = 15,
 177                 .max_signal = 15,
 178                 .muxval = 1,
 179                 .periph_buses = PL08X_AHB1,
 180         },
 181 };
 182
 183 /* Add SPEAr300 auxdata to pass platform data */
 184 static struct of_dev_auxdata spear300_auxdata_lookup[] __initdata = {
 185         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
 186                         &pl022_plat_data),
 187         OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
 188                         &pl080_plat_data),
 189         {}
 190 };
 191
 192 static void __init spear300_dt_init(void)
 193 {
 194         pl080_plat_data.slave_channels = spear300_dma_info;
 195         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear300_dma_info);
 196
 197         of_platform_populate(NULL, of_default_bus_match_table,
 198                         spear300_auxdata_lookup, NULL);
 199 }
 200
 201 static const char * const spear300_dt_board_compat[] = {
 202         "st,spear300",
 203         "st,spear300-evb",
 204         NULL,
 205 };
 206
 207 static void __init spear300_map_io(void)
 208 {
 209         spear3xx_map_io();
 210 }
 211
 212 DT_MACHINE_START(SPEAR300_DT, "ST SPEAr300 SoC with Flattened Device Tree")
 213         .map_io         =       spear300_map_io,
 214         .init_time      =       spear3xx_timer_init,
 215         .init_machine   =       spear300_dt_init,
 216         .restart        =       spear_restart,
 217         .dt_compat      =       spear300_dt_board_compat,
 218 MACHINE_END