arch/arm/mach-spear/spear320.c

   1 /*
   2  * arch/arm/mach-spear3xx/spear320.c
   3  *
   4  * SPEAr320 machine source file
   5  *
   6  * Copyright (C) 2009-2012 ST Microelectronics
   7  * Viresh Kumar <vireshk@kernel.org>
   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) "SPEAr320: " fmt
  15
  16 #include <linux/amba/pl022.h>
  17 #include <linux/amba/pl08x.h>
  18 #include <linux/amba/serial.h>
  19 #include <linux/of_platform.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/map.h>
  22 #include "generic.h"
  23 #include <mach/spear.h>
  24
  25 #define SPEAR320_UART1_BASE             UL(0xA3000000)
  26 #define SPEAR320_UART2_BASE             UL(0xA4000000)
  27 #define SPEAR320_SSP0_BASE              UL(0xA5000000)
  28 #define SPEAR320_SSP1_BASE              UL(0xA6000000)
  29
  30 /* DMAC platform data's slave info */
  31 struct pl08x_channel_data spear320_dma_info[] = {
  32         {
  33                 .bus_id = "uart0_rx",
  34                 .min_signal = 2,
  35                 .max_signal = 2,
  36                 .muxval = 0,
  37                 .periph_buses = PL08X_AHB1,
  38         }, {
  39                 .bus_id = "uart0_tx",
  40                 .min_signal = 3,
  41                 .max_signal = 3,
  42                 .muxval = 0,
  43                 .periph_buses = PL08X_AHB1,
  44         }, {
  45                 .bus_id = "ssp0_rx",
  46                 .min_signal = 8,
  47                 .max_signal = 8,
  48                 .muxval = 0,
  49                 .periph_buses = PL08X_AHB1,
  50         }, {
  51                 .bus_id = "ssp0_tx",
  52                 .min_signal = 9,
  53                 .max_signal = 9,
  54                 .muxval = 0,
  55                 .periph_buses = PL08X_AHB1,
  56         }, {
  57                 .bus_id = "i2c0_rx",
  58                 .min_signal = 10,
  59                 .max_signal = 10,
  60                 .muxval = 0,
  61                 .periph_buses = PL08X_AHB1,
  62         }, {
  63                 .bus_id = "i2c0_tx",
  64                 .min_signal = 11,
  65                 .max_signal = 11,
  66                 .muxval = 0,
  67                 .periph_buses = PL08X_AHB1,
  68         }, {
  69                 .bus_id = "irda",
  70                 .min_signal = 12,
  71                 .max_signal = 12,
  72                 .muxval = 0,
  73                 .periph_buses = PL08X_AHB1,
  74         }, {
  75                 .bus_id = "adc",
  76                 .min_signal = 13,
  77                 .max_signal = 13,
  78                 .muxval = 0,
  79                 .periph_buses = PL08X_AHB1,
  80         }, {
  81                 .bus_id = "to_jpeg",
  82                 .min_signal = 14,
  83                 .max_signal = 14,
  84                 .muxval = 0,
  85                 .periph_buses = PL08X_AHB1,
  86         }, {
  87                 .bus_id = "from_jpeg",
  88                 .min_signal = 15,
  89                 .max_signal = 15,
  90                 .muxval = 0,
  91                 .periph_buses = PL08X_AHB1,
  92         }, {
  93                 .bus_id = "ssp1_rx",
  94                 .min_signal = 0,
  95                 .max_signal = 0,
  96                 .muxval = 1,
  97                 .periph_buses = PL08X_AHB2,
  98         }, {
  99                 .bus_id = "ssp1_tx",
 100                 .min_signal = 1,
 101                 .max_signal = 1,
 102                 .muxval = 1,
 103                 .periph_buses = PL08X_AHB2,
 104         }, {
 105                 .bus_id = "ssp2_rx",
 106                 .min_signal = 2,
 107                 .max_signal = 2,
 108                 .muxval = 1,
 109                 .periph_buses = PL08X_AHB2,
 110         }, {
 111                 .bus_id = "ssp2_tx",
 112                 .min_signal = 3,
 113                 .max_signal = 3,
 114                 .muxval = 1,
 115                 .periph_buses = PL08X_AHB2,
 116         }, {
 117                 .bus_id = "uart1_rx",
 118                 .min_signal = 4,
 119                 .max_signal = 4,
 120                 .muxval = 1,
 121                 .periph_buses = PL08X_AHB2,
 122         }, {
 123                 .bus_id = "uart1_tx",
 124                 .min_signal = 5,
 125                 .max_signal = 5,
 126                 .muxval = 1,
 127                 .periph_buses = PL08X_AHB2,
 128         }, {
 129                 .bus_id = "uart2_rx",
 130                 .min_signal = 6,
 131                 .max_signal = 6,
 132                 .muxval = 1,
 133                 .periph_buses = PL08X_AHB2,
 134         }, {
 135                 .bus_id = "uart2_tx",
 136                 .min_signal = 7,
 137                 .max_signal = 7,
 138                 .muxval = 1,
 139                 .periph_buses = PL08X_AHB2,
 140         }, {
 141                 .bus_id = "i2c1_rx",
 142                 .min_signal = 8,
 143                 .max_signal = 8,
 144                 .muxval = 1,
 145                 .periph_buses = PL08X_AHB2,
 146         }, {
 147                 .bus_id = "i2c1_tx",
 148                 .min_signal = 9,
 149                 .max_signal = 9,
 150                 .muxval = 1,
 151                 .periph_buses = PL08X_AHB2,
 152         }, {
 153                 .bus_id = "i2c2_rx",
 154                 .min_signal = 10,
 155                 .max_signal = 10,
 156                 .muxval = 1,
 157                 .periph_buses = PL08X_AHB2,
 158         }, {
 159                 .bus_id = "i2c2_tx",
 160                 .min_signal = 11,
 161                 .max_signal = 11,
 162                 .muxval = 1,
 163                 .periph_buses = PL08X_AHB2,
 164         }, {
 165                 .bus_id = "i2s_rx",
 166                 .min_signal = 12,
 167                 .max_signal = 12,
 168                 .muxval = 1,
 169                 .periph_buses = PL08X_AHB2,
 170         }, {
 171                 .bus_id = "i2s_tx",
 172                 .min_signal = 13,
 173                 .max_signal = 13,
 174                 .muxval = 1,
 175                 .periph_buses = PL08X_AHB2,
 176         }, {
 177                 .bus_id = "rs485_rx",
 178                 .min_signal = 14,
 179                 .max_signal = 14,
 180                 .muxval = 1,
 181                 .periph_buses = PL08X_AHB2,
 182         }, {
 183                 .bus_id = "rs485_tx",
 184                 .min_signal = 15,
 185                 .max_signal = 15,
 186                 .muxval = 1,
 187                 .periph_buses = PL08X_AHB2,
 188         },
 189 };
 190
 191 static struct pl022_ssp_controller spear320_ssp_data[] = {
 192         {
 193                 .bus_id = 1,
 194                 .enable_dma = 1,
 195                 .dma_filter = pl08x_filter_id,
 196                 .dma_tx_param = "ssp1_tx",
 197                 .dma_rx_param = "ssp1_rx",
 198                 .num_chipselect = 2,
 199         }, {
 200                 .bus_id = 2,
 201                 .enable_dma = 1,
 202                 .dma_filter = pl08x_filter_id,
 203                 .dma_tx_param = "ssp2_tx",
 204                 .dma_rx_param = "ssp2_rx",
 205                 .num_chipselect = 2,
 206         }
 207 };
 208
 209 static struct amba_pl011_data spear320_uart_data[] = {
 210         {
 211                 .dma_filter = pl08x_filter_id,
 212                 .dma_tx_param = "uart1_tx",
 213                 .dma_rx_param = "uart1_rx",
 214         }, {
 215                 .dma_filter = pl08x_filter_id,
 216                 .dma_tx_param = "uart2_tx",
 217                 .dma_rx_param = "uart2_rx",
 218         },
 219 };
 220
 221 /* Add SPEAr310 auxdata to pass platform data */
 222 static struct of_dev_auxdata spear320_auxdata_lookup[] __initdata = {
 223         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
 224                         &pl022_plat_data),
 225         OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
 226                         &pl080_plat_data),
 227         OF_DEV_AUXDATA("arm,pl022", SPEAR320_SSP0_BASE, NULL,
 228                         &spear320_ssp_data[0]),
 229         OF_DEV_AUXDATA("arm,pl022", SPEAR320_SSP1_BASE, NULL,
 230                         &spear320_ssp_data[1]),
 231         OF_DEV_AUXDATA("arm,pl011", SPEAR320_UART1_BASE, NULL,
 232                         &spear320_uart_data[0]),
 233         OF_DEV_AUXDATA("arm,pl011", SPEAR320_UART2_BASE, NULL,
 234                         &spear320_uart_data[1]),
 235         {}
 236 };
 237
 238 static void __init spear320_dt_init(void)
 239 {
 240         pl080_plat_data.slave_channels = spear320_dma_info;
 241         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear320_dma_info);
 242
 243         of_platform_populate(NULL, of_default_bus_match_table,
 244                         spear320_auxdata_lookup, NULL);
 245 }
 246
 247 static const char * const spear320_dt_board_compat[] = {
 248         "st,spear320",
 249         "st,spear320-evb",
 250         "st,spear320-hmi",
 251         NULL,
 252 };
 253
 254 struct map_desc spear320_io_desc[] __initdata = {
 255         {
 256                 .virtual        = (unsigned long)VA_SPEAR320_SOC_CONFIG_BASE,
 257                 .pfn            = __phys_to_pfn(SPEAR320_SOC_CONFIG_BASE),
 258                 .length         = SZ_16M,
 259                 .type           = MT_DEVICE
 260         },
 261 };
 262
 263 static void __init spear320_map_io(void)
 264 {
 265         iotable_init(spear320_io_desc, ARRAY_SIZE(spear320_io_desc));
 266         spear3xx_map_io();
 267 }
 268
 269 DT_MACHINE_START(SPEAR320_DT, "ST SPEAr320 SoC with Flattened Device Tree")
 270         .map_io         =       spear320_map_io,
 271         .init_time      =       spear3xx_timer_init,
 272         .init_machine   =       spear320_dt_init,
 273         .restart        =       spear_restart,
 274         .dt_compat      =       spear320_dt_board_compat,
 275 MACHINE_END