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