release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sh/boards/mach-r2d/setup.c

   1 /*
   2  * Renesas Technology Sales RTS7751R2D Support.
   3  *
   4  * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
   5  * Copyright (C) 2004 - 2007 Paul Mundt
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #include <linux/init.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/mtd/mtd.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/mtd/physmap.h>
  16 #include <linux/ata_platform.h>
  17 #include <linux/sm501.h>
  18 #include <linux/sm501-regs.h>
  19 #include <linux/pm.h>
  20 #include <linux/fb.h>
  21 #include <linux/spi/spi.h>
  22 #include <linux/spi/spi_bitbang.h>
  23 #include <asm/machvec.h>
  24 #include <mach/r2d.h>
  25 #include <asm/io.h>
  26 #include <asm/io_trapped.h>
  27 #include <asm/spi.h>
  28
  29 static struct resource cf_ide_resources[] = {
  30         [0] = {
  31                 .start  = PA_AREA5_IO + 0x1000,
  32                 .end    = PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
  33                 .flags  = IORESOURCE_MEM,
  34         },
  35         [1] = {
  36                 .start  = PA_AREA5_IO + 0x80c,
  37                 .end    = PA_AREA5_IO + 0x80c,
  38                 .flags  = IORESOURCE_MEM,
  39         },
  40 #ifndef CONFIG_RTS7751R2D_1     /* For R2D-1 polling is preferred */
  41         [2] = {
  42                 .start  = IRQ_CF_IDE,
  43                 .flags  = IORESOURCE_IRQ,
  44         },
  45 #endif
  46 };
  47
  48 static struct pata_platform_info pata_info = {
  49         .ioport_shift   = 1,
  50 };
  51
  52 static struct platform_device cf_ide_device  = {
  53         .name           = "pata_platform",
  54         .id             = -1,
  55         .num_resources  = ARRAY_SIZE(cf_ide_resources),
  56         .resource       = cf_ide_resources,
  57         .dev    = {
  58                 .platform_data  = &pata_info,
  59         },
  60 };
  61
  62 static struct spi_board_info spi_bus[] = {
  63         {
  64                 .modalias       = "rtc-r9701",
  65                 .max_speed_hz   = 1000000,
  66                 .mode           = SPI_MODE_3,
  67         },
  68 };
  69
  70 static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
  71 {
  72         BUG_ON(cs != 0);  /* Single Epson RTC-9701JE attached on CS0 */
  73         __raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE);
  74 }
  75
  76 static struct sh_spi_info spi_info = {
  77         .num_chipselect = 1,
  78         .chip_select = r2d_chip_select,
  79 };
  80
  81 static struct resource spi_sh_sci_resources[] = {
  82         {
  83                 .start  = 0xffe00000,
  84                 .end    = 0xffe0001f,
  85                 .flags  = IORESOURCE_MEM,
  86         },
  87 };
  88
  89 static struct platform_device spi_sh_sci_device  = {
  90         .name           = "spi_sh_sci",
  91         .id             = -1,
  92         .num_resources  = ARRAY_SIZE(spi_sh_sci_resources),
  93         .resource       = spi_sh_sci_resources,
  94         .dev    = {
  95                 .platform_data  = &spi_info,
  96         },
  97 };
  98
  99 static struct resource heartbeat_resources[] = {
 100         [0] = {
 101                 .start  = PA_OUTPORT,
 102                 .end    = PA_OUTPORT,
 103                 .flags  = IORESOURCE_MEM,
 104         },
 105 };
 106
 107 static struct platform_device heartbeat_device = {
 108         .name           = "heartbeat",
 109         .id             = -1,
 110         .num_resources  = ARRAY_SIZE(heartbeat_resources),
 111         .resource       = heartbeat_resources,
 112 };
 113
 114 static struct resource sm501_resources[] = {
 115         [0]     = {
 116                 .start  = 0x10000000,
 117                 .end    = 0x13e00000 - 1,
 118                 .flags  = IORESOURCE_MEM,
 119         },
 120         [1]     = {
 121                 .start  = 0x13e00000,
 122                 .end    = 0x13ffffff,
 123                 .flags  = IORESOURCE_MEM,
 124         },
 125         [2]     = {
 126                 .start  = IRQ_VOYAGER,
 127                 .flags  = IORESOURCE_IRQ,
 128         },
 129 };
 130
 131 static struct fb_videomode sm501_default_mode = {
 132         .pixclock       = 35714,
 133         .xres           = 640,
 134         .yres           = 480,
 135         .left_margin    = 105,
 136         .right_margin   = 50,
 137         .upper_margin   = 35,
 138         .lower_margin   = 0,
 139         .hsync_len      = 96,
 140         .vsync_len      = 2,
 141         .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 142 };
 143
 144 static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
 145         .def_bpp        = 16,
 146         .def_mode       = &sm501_default_mode,
 147         .flags          = SM501FB_FLAG_USE_INIT_MODE |
 148                           SM501FB_FLAG_USE_HWCURSOR |
 149                           SM501FB_FLAG_USE_HWACCEL |
 150                           SM501FB_FLAG_DISABLE_AT_EXIT,
 151 };
 152
 153 static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
 154         .flags          = (SM501FB_FLAG_USE_INIT_MODE |
 155                            SM501FB_FLAG_USE_HWCURSOR |
 156                            SM501FB_FLAG_USE_HWACCEL |
 157                            SM501FB_FLAG_DISABLE_AT_EXIT),
 158
 159 };
 160
 161 static struct sm501_platdata_fb sm501_fb_pdata = {
 162         .fb_route       = SM501_FB_OWN,
 163         .fb_crt         = &sm501_pdata_fbsub_crt,
 164         .fb_pnl         = &sm501_pdata_fbsub_pnl,
 165         .flags          = SM501_FBPD_SWAP_FB_ENDIAN,
 166 };
 167
 168 static struct sm501_initdata sm501_initdata = {
 169         .devices        = SM501_USE_USB_HOST | SM501_USE_UART0,
 170 };
 171
 172 static struct sm501_platdata sm501_platform_data = {
 173         .init           = &sm501_initdata,
 174         .fb             = &sm501_fb_pdata,
 175 };
 176
 177 static struct platform_device sm501_device = {
 178         .name           = "sm501",
 179         .id             = -1,
 180         .dev            = {
 181                 .platform_data  = &sm501_platform_data,
 182         },
 183         .num_resources  = ARRAY_SIZE(sm501_resources),
 184         .resource       = sm501_resources,
 185 };
 186
 187 static struct mtd_partition r2d_partitions[] = {
 188         {
 189                 .name           = "U-Boot",
 190                 .offset         = 0x00000000,
 191                 .size           = 0x00040000,
 192                 .mask_flags     = MTD_WRITEABLE,
 193         }, {
 194                 .name           = "Environment",
 195                 .offset         = MTDPART_OFS_NXTBLK,
 196                 .size           = 0x00040000,
 197                 .mask_flags     = MTD_WRITEABLE,
 198         }, {
 199                 .name           = "Kernel",
 200                 .offset         = MTDPART_OFS_NXTBLK,
 201                 .size           = 0x001c0000,
 202         }, {
 203                 .name           = "Flash_FS",
 204                 .offset         = MTDPART_OFS_NXTBLK,
 205                 .size           = MTDPART_SIZ_FULL,
 206         }
 207 };
 208
 209 static struct physmap_flash_data flash_data = {
 210         .width          = 2,
 211         .nr_parts       = ARRAY_SIZE(r2d_partitions),
 212         .parts          = r2d_partitions,
 213 };
 214
 215 static struct resource flash_resource = {
 216         .start          = 0x00000000,
 217         .end            = 0x02000000,
 218         .flags          = IORESOURCE_MEM,
 219 };
 220
 221 static struct platform_device flash_device = {
 222         .name           = "physmap-flash",
 223         .id             = -1,
 224         .resource       = &flash_resource,
 225         .num_resources  = 1,
 226         .dev            = {
 227                 .platform_data = &flash_data,
 228         },
 229 };
 230
 231 static struct platform_device *rts7751r2d_devices[] __initdata = {
 232         &sm501_device,
 233         &heartbeat_device,
 234         &spi_sh_sci_device,
 235 };
 236
 237 /*
 238  * The CF is connected with a 16-bit bus where 8-bit operations are
 239  * unsupported. The linux ata driver is however using 8-bit operations, so
 240  * insert a trapped io filter to convert 8-bit operations into 16-bit.
 241  */
 242 static struct trapped_io cf_trapped_io = {
 243         .resource               = cf_ide_resources,
 244         .num_resources          = 2,
 245         .minimum_bus_width      = 16,
 246 };
 247
 248 static int __init rts7751r2d_devices_setup(void)
 249 {
 250         if (register_trapped_io(&cf_trapped_io) == 0)
 251                 platform_device_register(&cf_ide_device);
 252
 253         if (mach_is_r2d_plus())
 254                 platform_device_register(&flash_device);
 255
 256         spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
 257
 258         return platform_add_devices(rts7751r2d_devices,
 259                                     ARRAY_SIZE(rts7751r2d_devices));
 260 }
 261 __initcall(rts7751r2d_devices_setup);
 262
 263 static void rts7751r2d_power_off(void)
 264 {
 265         __raw_writew(0x0001, PA_POWOFF);
 266 }
 267
 268 /*
 269  * Initialize the board
 270  */
 271 static void __init rts7751r2d_setup(char **cmdline_p)
 272 {
 273         void __iomem *sm501_reg;
 274         u16 ver = __raw_readw(PA_VERREG);
 275
 276         printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
 277
 278         printk(KERN_INFO "FPGA version:%d (revision:%d)\n",
 279                                         (ver >> 4) & 0xf, ver & 0xf);
 280
 281         __raw_writew(0x0000, PA_OUTPORT);
 282         pm_power_off = rts7751r2d_power_off;
 283
 284         /* sm501 dram configuration:
 285          * ColSizeX = 11 - External Memory Column Size: 256 words.
 286          * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
 287          * RstX = 1 - External Memory Reset: Normal.
 288          * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
 289          * BwC =  1 - Local Memory Block Write Cycle Time: 2 clocks.
 290          * BwP =  1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
 291          * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
 292          * Rst = 1 - Internal Memory Reset: Normal.
 293          * RA = 1 - Internal Memory Remain in Active State: Do not remain.
 294          */
 295
 296         sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
 297         writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
 298 }
 299
 300 /*
 301  * The Machine Vector
 302  */
 303 static struct sh_machine_vector mv_rts7751r2d __initmv = {
 304         .mv_name                = "RTS7751R2D",
 305         .mv_setup               = rts7751r2d_setup,
 306         .mv_init_irq            = init_rts7751r2d_IRQ,
 307         .mv_irq_demux           = rts7751r2d_irq_demux,
 308 };