kernel/arch/arm/mach-spear/spear310.c

   1 /*
   2  * arch/arm/mach-spear3xx/spear310.c
   3  *
   4  * SPEAr310 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) "SPEAr310: " fmt
  15
  16 #include <linux/amba/pl08x.h>
  17 #include <linux/amba/serial.h>
  18 #include <linux/of_platform.h>
  19 #include <asm/mach/arch.h>
  20 #include "generic.h"
  21 #include <mach/spear.h>
  22
  23 #define SPEAR310_UART1_BASE             UL(0xB2000000)
  24 #define SPEAR310_UART2_BASE             UL(0xB2080000)
  25 #define SPEAR310_UART3_BASE             UL(0xB2100000)
  26 #define SPEAR310_UART4_BASE             UL(0xB2180000)
  27 #define SPEAR310_UART5_BASE             UL(0xB2200000)
  28
  29 /* DMAC platform data's slave info */
  30 struct pl08x_channel_data spear310_dma_info[] = {
  31         {
  32                 .bus_id = "uart0_rx",
  33                 .min_signal = 2,
  34                 .max_signal = 2,
  35                 .muxval = 0,
  36                 .periph_buses = PL08X_AHB1,
  37         }, {
  38                 .bus_id = "uart0_tx",
  39                 .min_signal = 3,
  40                 .max_signal = 3,
  41                 .muxval = 0,
  42                 .periph_buses = PL08X_AHB1,
  43         }, {
  44                 .bus_id = "ssp0_rx",
  45                 .min_signal = 8,
  46                 .max_signal = 8,
  47                 .muxval = 0,
  48                 .periph_buses = PL08X_AHB1,
  49         }, {
  50                 .bus_id = "ssp0_tx",
  51                 .min_signal = 9,
  52                 .max_signal = 9,
  53                 .muxval = 0,
  54                 .periph_buses = PL08X_AHB1,
  55         }, {
  56                 .bus_id = "i2c_rx",
  57                 .min_signal = 10,
  58                 .max_signal = 10,
  59                 .muxval = 0,
  60                 .periph_buses = PL08X_AHB1,
  61         }, {
  62                 .bus_id = "i2c_tx",
  63                 .min_signal = 11,
  64                 .max_signal = 11,
  65                 .muxval = 0,
  66                 .periph_buses = PL08X_AHB1,
  67         }, {
  68                 .bus_id = "irda",
  69                 .min_signal = 12,
  70                 .max_signal = 12,
  71                 .muxval = 0,
  72                 .periph_buses = PL08X_AHB1,
  73         }, {
  74                 .bus_id = "adc",
  75                 .min_signal = 13,
  76                 .max_signal = 13,
  77                 .muxval = 0,
  78                 .periph_buses = PL08X_AHB1,
  79         }, {
  80                 .bus_id = "to_jpeg",
  81                 .min_signal = 14,
  82                 .max_signal = 14,
  83                 .muxval = 0,
  84                 .periph_buses = PL08X_AHB1,
  85         }, {
  86                 .bus_id = "from_jpeg",
  87                 .min_signal = 15,
  88                 .max_signal = 15,
  89                 .muxval = 0,
  90                 .periph_buses = PL08X_AHB1,
  91         }, {
  92                 .bus_id = "uart1_rx",
  93                 .min_signal = 0,
  94                 .max_signal = 0,
  95                 .muxval = 1,
  96                 .periph_buses = PL08X_AHB1,
  97         }, {
  98                 .bus_id = "uart1_tx",
  99                 .min_signal = 1,
 100                 .max_signal = 1,
 101                 .muxval = 1,
 102                 .periph_buses = PL08X_AHB1,
 103         }, {
 104                 .bus_id = "uart2_rx",
 105                 .min_signal = 2,
 106                 .max_signal = 2,
 107                 .muxval = 1,
 108                 .periph_buses = PL08X_AHB1,
 109         }, {
 110                 .bus_id = "uart2_tx",
 111                 .min_signal = 3,
 112                 .max_signal = 3,
 113                 .muxval = 1,
 114                 .periph_buses = PL08X_AHB1,
 115         }, {
 116                 .bus_id = "uart3_rx",
 117                 .min_signal = 4,
 118                 .max_signal = 4,
 119                 .muxval = 1,
 120                 .periph_buses = PL08X_AHB1,
 121         }, {
 122                 .bus_id = "uart3_tx",
 123                 .min_signal = 5,
 124                 .max_signal = 5,
 125                 .muxval = 1,
 126                 .periph_buses = PL08X_AHB1,
 127         }, {
 128                 .bus_id = "uart4_rx",
 129                 .min_signal = 6,
 130                 .max_signal = 6,
 131                 .muxval = 1,
 132                 .periph_buses = PL08X_AHB1,
 133         }, {
 134                 .bus_id = "uart4_tx",
 135                 .min_signal = 7,
 136                 .max_signal = 7,
 137                 .muxval = 1,
 138                 .periph_buses = PL08X_AHB1,
 139         }, {
 140                 .bus_id = "uart5_rx",
 141                 .min_signal = 8,
 142                 .max_signal = 8,
 143                 .muxval = 1,
 144                 .periph_buses = PL08X_AHB1,
 145         }, {
 146                 .bus_id = "uart5_tx",
 147                 .min_signal = 9,
 148                 .max_signal = 9,
 149                 .muxval = 1,
 150                 .periph_buses = PL08X_AHB1,
 151         }, {
 152                 .bus_id = "ras5_rx",
 153                 .min_signal = 10,
 154                 .max_signal = 10,
 155                 .muxval = 1,
 156                 .periph_buses = PL08X_AHB1,
 157         }, {
 158                 .bus_id = "ras5_tx",
 159                 .min_signal = 11,
 160                 .max_signal = 11,
 161                 .muxval = 1,
 162                 .periph_buses = PL08X_AHB1,
 163         }, {
 164                 .bus_id = "ras6_rx",
 165                 .min_signal = 12,
 166                 .max_signal = 12,
 167                 .muxval = 1,
 168                 .periph_buses = PL08X_AHB1,
 169         }, {
 170                 .bus_id = "ras6_tx",
 171                 .min_signal = 13,
 172                 .max_signal = 13,
 173                 .muxval = 1,
 174                 .periph_buses = PL08X_AHB1,
 175         }, {
 176                 .bus_id = "ras7_rx",
 177                 .min_signal = 14,
 178                 .max_signal = 14,
 179                 .muxval = 1,
 180                 .periph_buses = PL08X_AHB1,
 181         }, {
 182                 .bus_id = "ras7_tx",
 183                 .min_signal = 15,
 184                 .max_signal = 15,
 185                 .muxval = 1,
 186                 .periph_buses = PL08X_AHB1,
 187         },
 188 };
 189
 190 /* uart devices plat data */
 191 static struct amba_pl011_data spear310_uart_data[] = {
 192         {
 193                 .dma_filter = pl08x_filter_id,
 194                 .dma_tx_param = "uart1_tx",
 195                 .dma_rx_param = "uart1_rx",
 196         }, {
 197                 .dma_filter = pl08x_filter_id,
 198                 .dma_tx_param = "uart2_tx",
 199                 .dma_rx_param = "uart2_rx",
 200         }, {
 201                 .dma_filter = pl08x_filter_id,
 202                 .dma_tx_param = "uart3_tx",
 203                 .dma_rx_param = "uart3_rx",
 204         }, {
 205                 .dma_filter = pl08x_filter_id,
 206                 .dma_tx_param = "uart4_tx",
 207                 .dma_rx_param = "uart4_rx",
 208         }, {
 209                 .dma_filter = pl08x_filter_id,
 210                 .dma_tx_param = "uart5_tx",
 211                 .dma_rx_param = "uart5_rx",
 212         },
 213 };
 214
 215 /* Add SPEAr310 auxdata to pass platform data */
 216 static struct of_dev_auxdata spear310_auxdata_lookup[] __initdata = {
 217         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
 218                         &pl022_plat_data),
 219         OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
 220                         &pl080_plat_data),
 221         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART1_BASE, NULL,
 222                         &spear310_uart_data[0]),
 223         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART2_BASE, NULL,
 224                         &spear310_uart_data[1]),
 225         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART3_BASE, NULL,
 226                         &spear310_uart_data[2]),
 227         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART4_BASE, NULL,
 228                         &spear310_uart_data[3]),
 229         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART5_BASE, NULL,
 230                         &spear310_uart_data[4]),
 231         {}
 232 };
 233
 234 static void __init spear310_dt_init(void)
 235 {
 236         pl080_plat_data.slave_channels = spear310_dma_info;
 237         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear310_dma_info);
 238
 239         of_platform_populate(NULL, of_default_bus_match_table,
 240                         spear310_auxdata_lookup, NULL);
 241 }
 242
 243 static const char * const spear310_dt_board_compat[] = {
 244         "st,spear310",
 245         "st,spear310-evb",
 246         NULL,
 247 };
 248
 249 static void __init spear310_map_io(void)
 250 {
 251         spear3xx_map_io();
 252 }
 253
 254 DT_MACHINE_START(SPEAR310_DT, "ST SPEAr310 SoC with Flattened Device Tree")
 255         .map_io         =       spear310_map_io,
 256         .init_time      =       spear3xx_timer_init,
 257         .init_machine   =       spear310_dt_init,
 258         .restart        =       spear_restart,
 259         .dt_compat      =       spear310_dt_board_compat,
 260 MACHINE_END