arch/sh/boards/mach-r2d/setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Renesas Technology Sales RTS7751R2D Support.
   4  *
   5  * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
   6  * Copyright (C) 2004 - 2007 Paul Mundt
   7  */
   8 #include <linux/init.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/mtd/mtd.h>
  11 #include <linux/mtd/partitions.h>
  12 #include <linux/mtd/physmap.h>
  13 #include <linux/ata_platform.h>
  14 #include <linux/sm501.h>
  15 #include <linux/sm501-regs.h>
  16 #include <linux/pm.h>
  17 #include <linux/fb.h>
  18 #include <linux/spi/spi.h>
  19 #include <linux/spi/spi_bitbang.h>
  20 #include <asm/machvec.h>
  21 #include <mach/r2d.h>
  22 #include <asm/io.h>
  23 #include <asm/io_trapped.h>
  24 #include <asm/spi.h>
  25
  26 static struct resource cf_ide_resources[] = {
  27         [0] = {
  28                 .start  = PA_AREA5_IO + 0x1000,
  29                 .end    = PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
  30                 .flags  = IORESOURCE_MEM,
  31         },
  32         [1] = {
  33                 .start  = PA_AREA5_IO + 0x80c,
  34                 .end    = PA_AREA5_IO + 0x80c,
  35                 .flags  = IORESOURCE_MEM,
  36         },
  37 #ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
  38         [2] = {
  39                 .start  = IRQ_CF_IDE,
  40                 .flags  = IORESOURCE_IRQ,
  41         },
  42 #endif
  43 };
  44
  45 static struct pata_platform_info pata_info = {
  46         .ioport_shift   = 1,
  47 };
  48
  49 static struct platform_device cf_ide_device  = {
  50         .name           = "pata_platform",
  51         .id             = -1,
  52         .num_resources  = ARRAY_SIZE(cf_ide_resources),
  53         .resource       = cf_ide_resources,
  54         .dev    = {
  55                 .platform_data  = &pata_info,
  56         },
  57 };
  58
  59 static struct spi_board_info spi_bus[] = {
  60         {
  61                 .modalias       = "rtc-r9701",
  62                 .max_speed_hz   = 1000000,
  63                 .mode           = SPI_MODE_3,
  64         },
  65 };
  66
  67 static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
  68 {
  69         BUG_ON(cs != 0);  /* Single Epson RTC-9701JE attached on CS0 */
  70         __raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE);
  71 }
  72
  73 static struct sh_spi_info spi_info = {
  74         .num_chipselect = 1,
  75         .chip_select = r2d_chip_select,
  76 };
  77
  78 static struct resource spi_sh_sci_resources[] = {
  79         {
  80                 .start  = 0xffe00000,
  81                 .end    = 0xffe0001f,
  82                 .flags  = IORESOURCE_MEM,
  83         },
  84 };
  85
  86 static struct platform_device spi_sh_sci_device  = {
  87         .name           = "spi_sh_sci",
  88         .id             = -1,
  89         .num_resources  = ARRAY_SIZE(spi_sh_sci_resources),
  90         .resource       = spi_sh_sci_resources,
  91         .dev    = {
  92                 .platform_data  = &spi_info,
  93         },
  94 };
  95
  96 static struct resource heartbeat_resources[] = {
  97         [0] = {
  98                 .start  = PA_OUTPORT,
  99                 .end    = PA_OUTPORT,
 100                 .flags  = IORESOURCE_MEM,
 101         },
 102 };
 103
 104 static struct platform_device heartbeat_device = {
 105         .name           = "heartbeat",
 106         .id             = -1,
 107         .num_resources  = ARRAY_SIZE(heartbeat_resources),
 108         .resource       = heartbeat_resources,
 109 };
 110
 111 static struct resource sm501_resources[] = {
 112         [0]     = {
 113                 .start  = 0x10000000,
 114                 .end    = 0x13e00000 - 1,
 115                 .flags  = IORESOURCE_MEM,
 116         },
 117         [1]     = {
 118                 .start  = 0x13e00000,
 119                 .end    = 0x13ffffff,
 120                 .flags  = IORESOURCE_MEM,
 121         },
 122         [2]     = {
 123                 .start  = IRQ_VOYAGER,
 124                 .flags  = IORESOURCE_IRQ,
 125         },
 126 };
 127
 128 static struct fb_videomode sm501_default_mode = {
 129         .pixclock       = 35714,
 130         .xres           = 640,
 131         .yres           = 480,
 132         .left_margin    = 105,
 133         .right_margin   = 50,
 134         .upper_margin   = 35,
 135         .lower_margin   = 0,
 136         .hsync_len      = 96,
 137         .vsync_len      = 2,
 138         .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 139 };
 140
 141 static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
 142         .def_bpp        = 16,
 143         .def_mode       = &sm501_default_mode,
 144         .flags          = SM501FB_FLAG_USE_INIT_MODE |
 145                           SM501FB_FLAG_USE_HWCURSOR |
 146                           SM501FB_FLAG_USE_HWACCEL |
 147                           SM501FB_FLAG_DISABLE_AT_EXIT,
 148 };
 149
 150 static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
 151         .flags          = (SM501FB_FLAG_USE_INIT_MODE |
 152                            SM501FB_FLAG_USE_HWCURSOR |
 153                            SM501FB_FLAG_USE_HWACCEL |
 154                            SM501FB_FLAG_DISABLE_AT_EXIT),
 155
 156 };
 157
 158 static struct sm501_platdata_fb sm501_fb_pdata = {
 159         .fb_route       = SM501_FB_OWN,
 160         .fb_crt         = &sm501_pdata_fbsub_crt,
 161         .fb_pnl         = &sm501_pdata_fbsub_pnl,
 162         .flags          = SM501_FBPD_SWAP_FB_ENDIAN,
 163 };
 164
 165 static struct sm501_initdata sm501_initdata = {
 166         .devices        = SM501_USE_USB_HOST | SM501_USE_UART0,
 167 };
 168
 169 static struct sm501_platdata sm501_platform_data = {
 170         .init           = &sm501_initdata,
 171         .fb             = &sm501_fb_pdata,
 172 };
 173
 174 static struct platform_device sm501_device = {
 175         .name           = "sm501",
 176         .id             = -1,
 177         .dev            = {
 178                 .platform_data  = &sm501_platform_data,
 179         },
 180         .num_resources  = ARRAY_SIZE(sm501_resources),
 181         .resource       = sm501_resources,
 182 };
 183
 184 static struct mtd_partition r2d_partitions[] = {
 185         {
 186                 .name           = "U-Boot",
 187                 .offset         = 0x00000000,
 188                 .size           = 0x00040000,
 189                 .mask_flags     = MTD_WRITEABLE,
 190         }, {
 191                 .name           = "Environment",
 192                 .offset         = MTDPART_OFS_NXTBLK,
 193                 .size           = 0x00040000,
 194                 .mask_flags     = MTD_WRITEABLE,
 195         }, {
 196                 .name           = "Kernel",
 197                 .offset         = MTDPART_OFS_NXTBLK,
 198                 .size           = 0x001c0000,
 199         }, {
 200                 .name           = "Flash_FS",
 201                 .offset         = MTDPART_OFS_NXTBLK,
 202                 .size           = MTDPART_SIZ_FULL,
 203         }
 204 };
 205
 206 static struct physmap_flash_data flash_data = {
 207         .width          = 2,
 208         .nr_parts       = ARRAY_SIZE(r2d_partitions),
 209         .parts          = r2d_partitions,
 210 };
 211
 212 static struct resource flash_resource = {
 213         .start          = 0x00000000,
 214         .end            = 0x02000000,
 215         .flags          = IORESOURCE_MEM,
 216 };
 217
 218 static struct platform_device flash_device = {
 219         .name           = "physmap-flash",
 220         .id             = -1,
 221         .resource       = &flash_resource,
 222         .num_resources  = 1,
 223         .dev            = {
 224                 .platform_data = &flash_data,
 225         },
 226 };
 227
 228 static struct platform_device *rts7751r2d_devices[] __initdata = {
 229         &sm501_device,
 230         &heartbeat_device,
 231         &spi_sh_sci_device,
 232 };
 233
 234 /*
 235  * The CF is connected with a 16-bit bus where 8-bit operations are
 236  * unsupported. The linux ata driver is however using 8-bit operations, so
 237  * insert a trapped io filter to convert 8-bit operations into 16-bit.
 238  */
 239 static struct trapped_io cf_trapped_io = {
 240         .resource               = cf_ide_resources,
 241         .num_resources          = 2,
 242         .minimum_bus_width      = 16,
 243 };
 244
 245 static int __init rts7751r2d_devices_setup(void)
 246 {
 247         if (register_trapped_io(&cf_trapped_io) == 0)
 248                 platform_device_register(&cf_ide_device);
 249
 250         if (mach_is_r2d_plus())
 251                 platform_device_register(&flash_device);
 252
 253         spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
 254
 255         return platform_add_devices(rts7751r2d_devices,
 256                                     ARRAY_SIZE(rts7751r2d_devices));
 257 }
 258 device_initcall(rts7751r2d_devices_setup);
 259
 260 static void rts7751r2d_power_off(void)
 261 {
 262         __raw_writew(0x0001, PA_POWOFF);
 263 }
 264
 265 /*
 266  * Initialize the board
 267  */
 268 static void __init rts7751r2d_setup(char **cmdline_p)
 269 {
 270         void __iomem *sm501_reg;
 271         u16 ver = __raw_readw(PA_VERREG);
 272
 273         printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
 274
 275         printk(KERN_INFO "FPGA version:%d (revision:%d)\n",
 276                                         (ver >> 4) & 0xf, ver & 0xf);
 277
 278         __raw_writew(0x0000, PA_OUTPORT);
 279         pm_power_off = rts7751r2d_power_off;
 280
 281         /* sm501 dram configuration:
 282          * ColSizeX = 11 - External Memory Column Size: 256 words.
 283          * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
 284          * RstX = 1 - External Memory Reset: Normal.
 285          * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
 286          * BwC =  1 - Local Memory Block Write Cycle Time: 2 clocks.
 287          * BwP =  1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
 288          * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
 289          * Rst = 1 - Internal Memory Reset: Normal.
 290          * RA = 1 - Internal Memory Remain in Active State: Do not remain.
 291          */
 292
 293         sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
 294         writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
 295 }
 296
 297 /*
 298  * The Machine Vector
 299  */
 300 static struct sh_machine_vector mv_rts7751r2d __initmv = {
 301         .mv_name                = "RTS7751R2D",
 302         .mv_setup               = rts7751r2d_setup,
 303         .mv_init_irq            = init_rts7751r2d_IRQ,
 304         .mv_irq_demux           = rts7751r2d_irq_demux,
 305 };