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   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/ata_platform.h>
  14 #include <linux/serial_8250.h>
  15 #include <linux/sm501.h>
  16 #include <linux/sm501-regs.h>
  17 #include <linux/pm.h>
  18 #include <linux/fb.h>
  19 #include <linux/spi/spi.h>
  20 #include <linux/spi/spi_bitbang.h>
  21 #include <asm/machvec.h>
  22 #include <asm/rts7751r2d.h>
  23 #include <asm/io.h>
  24 #include <asm/io_trapped.h>
  25 #include <asm/spi.h>
  26
  27 static struct resource cf_ide_resources[] = {
  28         [0] = {
  29                 .start  = PA_AREA5_IO + 0x1000,
  30                 .end    = PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
  31                 .flags  = IORESOURCE_MEM,
  32         },
  33         [1] = {
  34                 .start  = PA_AREA5_IO + 0x80c,
  35                 .end    = PA_AREA5_IO + 0x80c,
  36                 .flags  = IORESOURCE_MEM,
  37         },
  38 #ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
  39         [2] = {
  40                 .start  = IRQ_CF_IDE,
  41                 .flags  = IORESOURCE_IRQ,
  42         },
  43 #endif
  44 };
  45
  46 static struct pata_platform_info pata_info = {
  47         .ioport_shift   = 1,
  48 };
  49
  50 static struct platform_device cf_ide_device  = {
  51         .name           = "pata_platform",
  52         .id             = -1,
  53         .num_resources  = ARRAY_SIZE(cf_ide_resources),
  54         .resource       = cf_ide_resources,
  55         .dev    = {
  56                 .platform_data  = &pata_info,
  57         },
  58 };
  59
  60 static struct spi_board_info spi_bus[] = {
  61         {
  62                 .modalias       = "rtc-r9701",
  63                 .max_speed_hz   = 1000000,
  64                 .mode           = SPI_MODE_3,
  65         },
  66 };
  67
  68 static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
  69 {
  70         BUG_ON(cs != 0);  /* Single Epson RTC-9701JE attached on CS0 */
  71         ctrl_outw(state == BITBANG_CS_ACTIVE, PA_RTCCE);
  72 }
  73
  74 static struct sh_spi_info spi_info = {
  75         .num_chipselect = 1,
  76         .chip_select = r2d_chip_select,
  77 };
  78
  79 static struct resource spi_sh_sci_resources[] = {
  80         {
  81                 .start  = 0xffe00000,
  82                 .end    = 0xffe0001f,
  83                 .flags  = IORESOURCE_MEM,
  84         },
  85 };
  86
  87 static struct platform_device spi_sh_sci_device  = {
  88         .name           = "spi_sh_sci",
  89         .id             = -1,
  90         .num_resources  = ARRAY_SIZE(spi_sh_sci_resources),
  91         .resource       = spi_sh_sci_resources,
  92         .dev    = {
  93                 .platform_data  = &spi_info,
  94         },
  95 };
  96
  97 static struct resource heartbeat_resources[] = {
  98         [0] = {
  99                 .start  = PA_OUTPORT,
 100                 .end    = PA_OUTPORT,
 101                 .flags  = IORESOURCE_MEM,
 102         },
 103 };
 104
 105 static struct platform_device heartbeat_device = {
 106         .name           = "heartbeat",
 107         .id             = -1,
 108         .num_resources  = ARRAY_SIZE(heartbeat_resources),
 109         .resource       = heartbeat_resources,
 110 };
 111
 112 static struct plat_serial8250_port uart_platform_data[] = {
 113         {
 114                 .membase        = (void __iomem *)0xb3e30000,
 115                 .mapbase        = 0xb3e30000,
 116                 .iotype         = UPIO_MEM,
 117                 .irq            = IRQ_VOYAGER,
 118                 .flags          = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
 119                 .regshift       = 2,
 120                 .uartclk        = (9600 * 16),
 121         },
 122         { 0 },
 123 };
 124
 125 static struct platform_device uart_device = {
 126         .name           = "serial8250",
 127         .id             = PLAT8250_DEV_PLATFORM,
 128         .dev            = {
 129                 .platform_data  = uart_platform_data,
 130         },
 131 };
 132
 133 static struct resource sm501_resources[] = {
 134         [0]     = {
 135                 .start  = 0x10000000,
 136                 .end    = 0x13e00000 - 1,
 137                 .flags  = IORESOURCE_MEM,
 138         },
 139         [1]     = {
 140                 .start  = 0x13e00000,
 141                 .end    = 0x13ffffff,
 142                 .flags  = IORESOURCE_MEM,
 143         },
 144         [2]     = {
 145                 .start  = IRQ_VOYAGER,
 146                 .flags  = IORESOURCE_IRQ,
 147         },
 148 };
 149
 150 static struct fb_videomode sm501_default_mode = {
 151         .pixclock       = 35714,
 152         .xres           = 640,
 153         .yres           = 480,
 154         .left_margin    = 105,
 155         .right_margin   = 50,
 156         .upper_margin   = 35,
 157         .lower_margin   = 0,
 158         .hsync_len      = 96,
 159         .vsync_len      = 2,
 160         .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 161 };
 162
 163 static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
 164         .def_bpp        = 16,
 165         .def_mode       = &sm501_default_mode,
 166         .flags          = SM501FB_FLAG_USE_INIT_MODE |
 167                           SM501FB_FLAG_USE_HWCURSOR |
 168                           SM501FB_FLAG_USE_HWACCEL |
 169                           SM501FB_FLAG_DISABLE_AT_EXIT,
 170 };
 171
 172 static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
 173         .flags          = (SM501FB_FLAG_USE_INIT_MODE |
 174                            SM501FB_FLAG_USE_HWCURSOR |
 175                            SM501FB_FLAG_USE_HWACCEL |
 176                            SM501FB_FLAG_DISABLE_AT_EXIT),
 177
 178 };
 179
 180 static struct sm501_platdata_fb sm501_fb_pdata = {
 181         .fb_route       = SM501_FB_OWN,
 182         .fb_crt         = &sm501_pdata_fbsub_crt,
 183         .fb_pnl         = &sm501_pdata_fbsub_pnl,
 184         .flags          = SM501_FBPD_SWAP_FB_ENDIAN,
 185 };
 186
 187 static struct sm501_initdata sm501_initdata = {
 188         .gpio_high      = {
 189                 .set    = 0x00001fe0,
 190                 .mask   = 0x0,
 191         },
 192         .devices        = SM501_USE_USB_HOST,
 193 };
 194
 195 static struct sm501_platdata sm501_platform_data = {
 196         .init           = &sm501_initdata,
 197         .fb             = &sm501_fb_pdata,
 198 };
 199
 200 static struct platform_device sm501_device = {
 201         .name           = "sm501",
 202         .id             = -1,
 203         .dev            = {
 204                 .platform_data  = &sm501_platform_data,
 205         },
 206         .num_resources  = ARRAY_SIZE(sm501_resources),
 207         .resource       = sm501_resources,
 208 };
 209
 210 static struct platform_device *rts7751r2d_devices[] __initdata = {
 211         &uart_device,
 212         &sm501_device,
 213         &heartbeat_device,
 214         &spi_sh_sci_device,
 215 };
 216
 217 /*
 218  * The CF is connected with a 16-bit bus where 8-bit operations are
 219  * unsupported. The linux ata driver is however using 8-bit operations, so
 220  * insert a trapped io filter to convert 8-bit operations into 16-bit.
 221  */
 222 static struct trapped_io cf_trapped_io = {
 223         .resource               = cf_ide_resources,
 224         .num_resources          = 2,
 225         .minimum_bus_width      = 16,
 226 };
 227
 228 static int __init rts7751r2d_devices_setup(void)
 229 {
 230         if (register_trapped_io(&cf_trapped_io) == 0)
 231                 platform_device_register(&cf_ide_device);
 232
 233         spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
 234
 235         return platform_add_devices(rts7751r2d_devices,
 236                                     ARRAY_SIZE(rts7751r2d_devices));
 237 }
 238 __initcall(rts7751r2d_devices_setup);
 239
 240 static void rts7751r2d_power_off(void)
 241 {
 242         ctrl_outw(0x0001, PA_POWOFF);
 243 }
 244
 245 /*
 246  * Initialize the board
 247  */
 248 static void __init rts7751r2d_setup(char **cmdline_p)
 249 {
 250         void __iomem *sm501_reg;
 251         u16 ver = ctrl_inw(PA_VERREG);
 252
 253         printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
 254
 255         printk(KERN_INFO "FPGA version:%d (revision:%d)\n",
 256                                         (ver >> 4) & 0xf, ver & 0xf);
 257
 258         ctrl_outw(0x0000, PA_OUTPORT);
 259         pm_power_off = rts7751r2d_power_off;
 260
 261         /* sm501 dram configuration:
 262          * ColSizeX = 11 - External Memory Column Size: 256 words.
 263          * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
 264          * RstX = 1 - External Memory Reset: Normal.
 265          * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
 266          * BwC =  1 - Local Memory Block Write Cycle Time: 2 clocks.
 267          * BwP =  1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
 268          * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
 269          * Rst = 1 - Internal Memory Reset: Normal.
 270          * RA = 1 - Internal Memory Remain in Active State: Do not remain.
 271          */
 272
 273         sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
 274         writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
 275
 276         /*
 277          * Power Mode Gate - Enable UART0
 278          */
 279
 280         sm501_reg = (void __iomem *)0xb3e00000 + SM501_POWER_MODE_0_GATE;
 281         writel(readl(sm501_reg) | (1 << SM501_GATE_UART0), sm501_reg);
 282
 283         sm501_reg = (void __iomem *)0xb3e00000 + SM501_POWER_MODE_1_GATE;
 284         writel(readl(sm501_reg) | (1 << SM501_GATE_UART0), sm501_reg);
 285 }
 286
 287 /*
 288  * The Machine Vector
 289  */
 290 static struct sh_machine_vector mv_rts7751r2d __initmv = {
 291         .mv_name                = "RTS7751R2D",
 292         .mv_setup               = rts7751r2d_setup,
 293         .mv_init_irq            = init_rts7751r2d_IRQ,
 294         .mv_irq_demux           = rts7751r2d_irq_demux,
 295 };