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/irqchip.h>
  18 #include <linux/of_platform.h>
  19 #include <asm/mach/arch.h>
  20 #include "generic.h"
  21 #include <mach/spear.h>
  22
  23 /* DMAC platform data's slave info */
  24 struct pl08x_channel_data spear300_dma_info[] = {
  25         {
  26                 .bus_id = "uart0_rx",
  27                 .min_signal = 2,
  28                 .max_signal = 2,
  29                 .muxval = 0,
  30                 .periph_buses = PL08X_AHB1,
  31         }, {
  32                 .bus_id = "uart0_tx",
  33                 .min_signal = 3,
  34                 .max_signal = 3,
  35                 .muxval = 0,
  36                 .periph_buses = PL08X_AHB1,
  37         }, {
  38                 .bus_id = "ssp0_rx",
  39                 .min_signal = 8,
  40                 .max_signal = 8,
  41                 .muxval = 0,
  42                 .periph_buses = PL08X_AHB1,
  43         }, {
  44                 .bus_id = "ssp0_tx",
  45                 .min_signal = 9,
  46                 .max_signal = 9,
  47                 .muxval = 0,
  48                 .periph_buses = PL08X_AHB1,
  49         }, {
  50                 .bus_id = "i2c_rx",
  51                 .min_signal = 10,
  52                 .max_signal = 10,
  53                 .muxval = 0,
  54                 .periph_buses = PL08X_AHB1,
  55         }, {
  56                 .bus_id = "i2c_tx",
  57                 .min_signal = 11,
  58                 .max_signal = 11,
  59                 .muxval = 0,
  60                 .periph_buses = PL08X_AHB1,
  61         }, {
  62                 .bus_id = "irda",
  63                 .min_signal = 12,
  64                 .max_signal = 12,
  65                 .muxval = 0,
  66                 .periph_buses = PL08X_AHB1,
  67         }, {
  68                 .bus_id = "adc",
  69                 .min_signal = 13,
  70                 .max_signal = 13,
  71                 .muxval = 0,
  72                 .periph_buses = PL08X_AHB1,
  73         }, {
  74                 .bus_id = "to_jpeg",
  75                 .min_signal = 14,
  76                 .max_signal = 14,
  77                 .muxval = 0,
  78                 .periph_buses = PL08X_AHB1,
  79         }, {
  80                 .bus_id = "from_jpeg",
  81                 .min_signal = 15,
  82                 .max_signal = 15,
  83                 .muxval = 0,
  84                 .periph_buses = PL08X_AHB1,
  85         }, {
  86                 .bus_id = "ras0_rx",
  87                 .min_signal = 0,
  88                 .max_signal = 0,
  89                 .muxval = 1,
  90                 .periph_buses = PL08X_AHB1,
  91         }, {
  92                 .bus_id = "ras0_tx",
  93                 .min_signal = 1,
  94                 .max_signal = 1,
  95                 .muxval = 1,
  96                 .periph_buses = PL08X_AHB1,
  97         }, {
  98                 .bus_id = "ras1_rx",
  99                 .min_signal = 2,
 100                 .max_signal = 2,
 101                 .muxval = 1,
 102                 .periph_buses = PL08X_AHB1,
 103         }, {
 104                 .bus_id = "ras1_tx",
 105                 .min_signal = 3,
 106                 .max_signal = 3,
 107                 .muxval = 1,
 108                 .periph_buses = PL08X_AHB1,
 109         }, {
 110                 .bus_id = "ras2_rx",
 111                 .min_signal = 4,
 112                 .max_signal = 4,
 113                 .muxval = 1,
 114                 .periph_buses = PL08X_AHB1,
 115         }, {
 116                 .bus_id = "ras2_tx",
 117                 .min_signal = 5,
 118                 .max_signal = 5,
 119                 .muxval = 1,
 120                 .periph_buses = PL08X_AHB1,
 121         }, {
 122                 .bus_id = "ras3_rx",
 123                 .min_signal = 6,
 124                 .max_signal = 6,
 125                 .muxval = 1,
 126                 .periph_buses = PL08X_AHB1,
 127         }, {
 128                 .bus_id = "ras3_tx",
 129                 .min_signal = 7,
 130                 .max_signal = 7,
 131                 .muxval = 1,
 132                 .periph_buses = PL08X_AHB1,
 133         }, {
 134                 .bus_id = "ras4_rx",
 135                 .min_signal = 8,
 136                 .max_signal = 8,
 137                 .muxval = 1,
 138                 .periph_buses = PL08X_AHB1,
 139         }, {
 140                 .bus_id = "ras4_tx",
 141                 .min_signal = 9,
 142                 .max_signal = 9,
 143                 .muxval = 1,
 144                 .periph_buses = PL08X_AHB1,
 145         }, {
 146                 .bus_id = "ras5_rx",
 147                 .min_signal = 10,
 148                 .max_signal = 10,
 149                 .muxval = 1,
 150                 .periph_buses = PL08X_AHB1,
 151         }, {
 152                 .bus_id = "ras5_tx",
 153                 .min_signal = 11,
 154                 .max_signal = 11,
 155                 .muxval = 1,
 156                 .periph_buses = PL08X_AHB1,
 157         }, {
 158                 .bus_id = "ras6_rx",
 159                 .min_signal = 12,
 160                 .max_signal = 12,
 161                 .muxval = 1,
 162                 .periph_buses = PL08X_AHB1,
 163         }, {
 164                 .bus_id = "ras6_tx",
 165                 .min_signal = 13,
 166                 .max_signal = 13,
 167                 .muxval = 1,
 168                 .periph_buses = PL08X_AHB1,
 169         }, {
 170                 .bus_id = "ras7_rx",
 171                 .min_signal = 14,
 172                 .max_signal = 14,
 173                 .muxval = 1,
 174                 .periph_buses = PL08X_AHB1,
 175         }, {
 176                 .bus_id = "ras7_tx",
 177                 .min_signal = 15,
 178                 .max_signal = 15,
 179                 .muxval = 1,
 180                 .periph_buses = PL08X_AHB1,
 181         },
 182 };
 183
 184 /* Add SPEAr300 auxdata to pass platform data */
 185 static struct of_dev_auxdata spear300_auxdata_lookup[] __initdata = {
 186         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
 187                         &pl022_plat_data),
 188         OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
 189                         &pl080_plat_data),
 190         {}
 191 };
 192
 193 static void __init spear300_dt_init(void)
 194 {
 195         pl080_plat_data.slave_channels = spear300_dma_info;
 196         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear300_dma_info);
 197
 198         of_platform_populate(NULL, of_default_bus_match_table,
 199                         spear300_auxdata_lookup, NULL);
 200 }
 201
 202 static const char * const spear300_dt_board_compat[] = {
 203         "st,spear300",
 204         "st,spear300-evb",
 205         NULL,
 206 };
 207
 208 static void __init spear300_map_io(void)
 209 {
 210         spear3xx_map_io();
 211 }
 212
 213 DT_MACHINE_START(SPEAR300_DT, "ST SPEAr300 SoC with Flattened Device Tree")
 214         .map_io         =       spear300_map_io,
 215         .init_irq       =       irqchip_init,
 216         .init_time      =       spear3xx_timer_init,
 217         .init_machine   =       spear300_dt_init,
 218         .restart        =       spear_restart,
 219         .dt_compat      =       spear300_dt_board_compat,
 220 MACHINE_END