arch/arm/mach-spear3xx/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/hardware/vic.h>
  19 #include <asm/mach/arch.h>
  20 #include <plat/shirq.h>
  21 #include <mach/generic.h>
  22 #include <mach/spear.h>
  23
  24 /* Base address of various IPs */
  25 #define SPEAR300_TELECOM_BASE           UL(0x50000000)
  26
  27 /* Interrupt registers offsets and masks */
  28 #define SPEAR300_INT_ENB_MASK_REG       0x54
  29 #define SPEAR300_INT_STS_MASK_REG       0x58
  30 #define SPEAR300_IT_PERS_S_IRQ_MASK     (1 << 0)
  31 #define SPEAR300_IT_CHANGE_S_IRQ_MASK   (1 << 1)
  32 #define SPEAR300_I2S_IRQ_MASK           (1 << 2)
  33 #define SPEAR300_TDM_IRQ_MASK           (1 << 3)
  34 #define SPEAR300_CAMERA_L_IRQ_MASK      (1 << 4)
  35 #define SPEAR300_CAMERA_F_IRQ_MASK      (1 << 5)
  36 #define SPEAR300_CAMERA_V_IRQ_MASK      (1 << 6)
  37 #define SPEAR300_KEYBOARD_IRQ_MASK      (1 << 7)
  38 #define SPEAR300_GPIO1_IRQ_MASK         (1 << 8)
  39
  40 #define SPEAR300_SHIRQ_RAS1_MASK        0x1FF
  41
  42 #define SPEAR300_SOC_CONFIG_BASE        UL(0x99000000)
  43
  44
  45 /* SPEAr300 Virtual irq definitions */
  46 /* IRQs sharing IRQ_GEN_RAS_1 */
  47 #define SPEAR300_VIRQ_IT_PERS_S                 (SPEAR3XX_VIRQ_START + 0)
  48 #define SPEAR300_VIRQ_IT_CHANGE_S               (SPEAR3XX_VIRQ_START + 1)
  49 #define SPEAR300_VIRQ_I2S                       (SPEAR3XX_VIRQ_START + 2)
  50 #define SPEAR300_VIRQ_TDM                       (SPEAR3XX_VIRQ_START + 3)
  51 #define SPEAR300_VIRQ_CAMERA_L                  (SPEAR3XX_VIRQ_START + 4)
  52 #define SPEAR300_VIRQ_CAMERA_F                  (SPEAR3XX_VIRQ_START + 5)
  53 #define SPEAR300_VIRQ_CAMERA_V                  (SPEAR3XX_VIRQ_START + 6)
  54 #define SPEAR300_VIRQ_KEYBOARD                  (SPEAR3XX_VIRQ_START + 7)
  55 #define SPEAR300_VIRQ_GPIO1                     (SPEAR3XX_VIRQ_START + 8)
  56
  57 /* IRQs sharing IRQ_GEN_RAS_3 */
  58 #define SPEAR300_IRQ_CLCD                       SPEAR3XX_IRQ_GEN_RAS_3
  59
  60 /* IRQs sharing IRQ_INTRCOMM_RAS_ARM */
  61 #define SPEAR300_IRQ_SDHCI                      SPEAR3XX_IRQ_INTRCOMM_RAS_ARM
  62
  63 /* spear3xx shared irq */
  64 static struct shirq_dev_config shirq_ras1_config[] = {
  65         {
  66                 .virq = SPEAR300_VIRQ_IT_PERS_S,
  67                 .enb_mask = SPEAR300_IT_PERS_S_IRQ_MASK,
  68                 .status_mask = SPEAR300_IT_PERS_S_IRQ_MASK,
  69         }, {
  70                 .virq = SPEAR300_VIRQ_IT_CHANGE_S,
  71                 .enb_mask = SPEAR300_IT_CHANGE_S_IRQ_MASK,
  72                 .status_mask = SPEAR300_IT_CHANGE_S_IRQ_MASK,
  73         }, {
  74                 .virq = SPEAR300_VIRQ_I2S,
  75                 .enb_mask = SPEAR300_I2S_IRQ_MASK,
  76                 .status_mask = SPEAR300_I2S_IRQ_MASK,
  77         }, {
  78                 .virq = SPEAR300_VIRQ_TDM,
  79                 .enb_mask = SPEAR300_TDM_IRQ_MASK,
  80                 .status_mask = SPEAR300_TDM_IRQ_MASK,
  81         }, {
  82                 .virq = SPEAR300_VIRQ_CAMERA_L,
  83                 .enb_mask = SPEAR300_CAMERA_L_IRQ_MASK,
  84                 .status_mask = SPEAR300_CAMERA_L_IRQ_MASK,
  85         }, {
  86                 .virq = SPEAR300_VIRQ_CAMERA_F,
  87                 .enb_mask = SPEAR300_CAMERA_F_IRQ_MASK,
  88                 .status_mask = SPEAR300_CAMERA_F_IRQ_MASK,
  89         }, {
  90                 .virq = SPEAR300_VIRQ_CAMERA_V,
  91                 .enb_mask = SPEAR300_CAMERA_V_IRQ_MASK,
  92                 .status_mask = SPEAR300_CAMERA_V_IRQ_MASK,
  93         }, {
  94                 .virq = SPEAR300_VIRQ_KEYBOARD,
  95                 .enb_mask = SPEAR300_KEYBOARD_IRQ_MASK,
  96                 .status_mask = SPEAR300_KEYBOARD_IRQ_MASK,
  97         }, {
  98                 .virq = SPEAR300_VIRQ_GPIO1,
  99                 .enb_mask = SPEAR300_GPIO1_IRQ_MASK,
 100                 .status_mask = SPEAR300_GPIO1_IRQ_MASK,
 101         },
 102 };
 103
 104 static struct spear_shirq shirq_ras1 = {
 105         .irq = SPEAR3XX_IRQ_GEN_RAS_1,
 106         .dev_config = shirq_ras1_config,
 107         .dev_count = ARRAY_SIZE(shirq_ras1_config),
 108         .regs = {
 109                 .enb_reg = SPEAR300_INT_ENB_MASK_REG,
 110                 .status_reg = SPEAR300_INT_STS_MASK_REG,
 111                 .status_reg_mask = SPEAR300_SHIRQ_RAS1_MASK,
 112                 .clear_reg = -1,
 113         },
 114 };
 115
 116 /* DMAC platform data's slave info */
 117 struct pl08x_channel_data spear300_dma_info[] = {
 118         {
 119                 .bus_id = "uart0_rx",
 120                 .min_signal = 2,
 121                 .max_signal = 2,
 122                 .muxval = 0,
 123                 .periph_buses = PL08X_AHB1,
 124         }, {
 125                 .bus_id = "uart0_tx",
 126                 .min_signal = 3,
 127                 .max_signal = 3,
 128                 .muxval = 0,
 129                 .periph_buses = PL08X_AHB1,
 130         }, {
 131                 .bus_id = "ssp0_rx",
 132                 .min_signal = 8,
 133                 .max_signal = 8,
 134                 .muxval = 0,
 135                 .periph_buses = PL08X_AHB1,
 136         }, {
 137                 .bus_id = "ssp0_tx",
 138                 .min_signal = 9,
 139                 .max_signal = 9,
 140                 .muxval = 0,
 141                 .periph_buses = PL08X_AHB1,
 142         }, {
 143                 .bus_id = "i2c_rx",
 144                 .min_signal = 10,
 145                 .max_signal = 10,
 146                 .muxval = 0,
 147                 .periph_buses = PL08X_AHB1,
 148         }, {
 149                 .bus_id = "i2c_tx",
 150                 .min_signal = 11,
 151                 .max_signal = 11,
 152                 .muxval = 0,
 153                 .periph_buses = PL08X_AHB1,
 154         }, {
 155                 .bus_id = "irda",
 156                 .min_signal = 12,
 157                 .max_signal = 12,
 158                 .muxval = 0,
 159                 .periph_buses = PL08X_AHB1,
 160         }, {
 161                 .bus_id = "adc",
 162                 .min_signal = 13,
 163                 .max_signal = 13,
 164                 .muxval = 0,
 165                 .periph_buses = PL08X_AHB1,
 166         }, {
 167                 .bus_id = "to_jpeg",
 168                 .min_signal = 14,
 169                 .max_signal = 14,
 170                 .muxval = 0,
 171                 .periph_buses = PL08X_AHB1,
 172         }, {
 173                 .bus_id = "from_jpeg",
 174                 .min_signal = 15,
 175                 .max_signal = 15,
 176                 .muxval = 0,
 177                 .periph_buses = PL08X_AHB1,
 178         }, {
 179                 .bus_id = "ras0_rx",
 180                 .min_signal = 0,
 181                 .max_signal = 0,
 182                 .muxval = 1,
 183                 .periph_buses = PL08X_AHB1,
 184         }, {
 185                 .bus_id = "ras0_tx",
 186                 .min_signal = 1,
 187                 .max_signal = 1,
 188                 .muxval = 1,
 189                 .periph_buses = PL08X_AHB1,
 190         }, {
 191                 .bus_id = "ras1_rx",
 192                 .min_signal = 2,
 193                 .max_signal = 2,
 194                 .muxval = 1,
 195                 .periph_buses = PL08X_AHB1,
 196         }, {
 197                 .bus_id = "ras1_tx",
 198                 .min_signal = 3,
 199                 .max_signal = 3,
 200                 .muxval = 1,
 201                 .periph_buses = PL08X_AHB1,
 202         }, {
 203                 .bus_id = "ras2_rx",
 204                 .min_signal = 4,
 205                 .max_signal = 4,
 206                 .muxval = 1,
 207                 .periph_buses = PL08X_AHB1,
 208         }, {
 209                 .bus_id = "ras2_tx",
 210                 .min_signal = 5,
 211                 .max_signal = 5,
 212                 .muxval = 1,
 213                 .periph_buses = PL08X_AHB1,
 214         }, {
 215                 .bus_id = "ras3_rx",
 216                 .min_signal = 6,
 217                 .max_signal = 6,
 218                 .muxval = 1,
 219                 .periph_buses = PL08X_AHB1,
 220         }, {
 221                 .bus_id = "ras3_tx",
 222                 .min_signal = 7,
 223                 .max_signal = 7,
 224                 .muxval = 1,
 225                 .periph_buses = PL08X_AHB1,
 226         }, {
 227                 .bus_id = "ras4_rx",
 228                 .min_signal = 8,
 229                 .max_signal = 8,
 230                 .muxval = 1,
 231                 .periph_buses = PL08X_AHB1,
 232         }, {
 233                 .bus_id = "ras4_tx",
 234                 .min_signal = 9,
 235                 .max_signal = 9,
 236                 .muxval = 1,
 237                 .periph_buses = PL08X_AHB1,
 238         }, {
 239                 .bus_id = "ras5_rx",
 240                 .min_signal = 10,
 241                 .max_signal = 10,
 242                 .muxval = 1,
 243                 .periph_buses = PL08X_AHB1,
 244         }, {
 245                 .bus_id = "ras5_tx",
 246                 .min_signal = 11,
 247                 .max_signal = 11,
 248                 .muxval = 1,
 249                 .periph_buses = PL08X_AHB1,
 250         }, {
 251                 .bus_id = "ras6_rx",
 252                 .min_signal = 12,
 253                 .max_signal = 12,
 254                 .muxval = 1,
 255                 .periph_buses = PL08X_AHB1,
 256         }, {
 257                 .bus_id = "ras6_tx",
 258                 .min_signal = 13,
 259                 .max_signal = 13,
 260                 .muxval = 1,
 261                 .periph_buses = PL08X_AHB1,
 262         }, {
 263                 .bus_id = "ras7_rx",
 264                 .min_signal = 14,
 265                 .max_signal = 14,
 266                 .muxval = 1,
 267                 .periph_buses = PL08X_AHB1,
 268         }, {
 269                 .bus_id = "ras7_tx",
 270                 .min_signal = 15,
 271                 .max_signal = 15,
 272                 .muxval = 1,
 273                 .periph_buses = PL08X_AHB1,
 274         },
 275 };
 276
 277 /* Add SPEAr300 auxdata to pass platform data */
 278 static struct of_dev_auxdata spear300_auxdata_lookup[] __initdata = {
 279         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
 280                         &pl022_plat_data),
 281         OF_DEV_AUXDATA("arm,pl080", SPEAR3XX_ICM3_DMA_BASE, NULL,
 282                         &pl080_plat_data),
 283         {}
 284 };
 285
 286 static void __init spear300_dt_init(void)
 287 {
 288         int ret;
 289
 290         pl080_plat_data.slave_channels = spear300_dma_info;
 291         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear300_dma_info);
 292
 293         of_platform_populate(NULL, of_default_bus_match_table,
 294                         spear300_auxdata_lookup, NULL);
 295
 296         /* shared irq registration */
 297         shirq_ras1.regs.base = ioremap(SPEAR300_TELECOM_BASE, SZ_4K);
 298         if (shirq_ras1.regs.base) {
 299                 ret = spear_shirq_register(&shirq_ras1);
 300                 if (ret)
 301                         pr_err("Error registering Shared IRQ\n");
 302         }
 303 }
 304
 305 static const char * const spear300_dt_board_compat[] = {
 306         "st,spear300",
 307         "st,spear300-evb",
 308         NULL,
 309 };
 310
 311 static void __init spear300_map_io(void)
 312 {
 313         spear3xx_map_io();
 314 }
 315
 316 DT_MACHINE_START(SPEAR300_DT, "ST SPEAr300 SoC with Flattened Device Tree")
 317         .map_io         =       spear300_map_io,
 318         .init_irq       =       spear3xx_dt_init_irq,
 319         .handle_irq     =       vic_handle_irq,
 320         .timer          =       &spear3xx_timer,
 321         .init_machine   =       spear300_dt_init,
 322         .restart        =       spear_restart,
 323         .dt_compat      =       spear300_dt_board_compat,
 324 MACHINE_END