306 lines
7.1 KiB
C
306 lines
7.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Renesas Technology Sales RTS7751R2D Support.
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*
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* Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
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* Copyright (C) 2004 - 2007 Paul Mundt
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*/
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/physmap.h>
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#include <linux/ata_platform.h>
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#include <linux/sm501.h>
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#include <linux/sm501-regs.h>
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#include <linux/pm.h>
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#include <linux/fb.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/spi_bitbang.h>
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#include <asm/machvec.h>
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#include <mach/r2d.h>
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#include <asm/io.h>
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#include <asm/io_trapped.h>
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#include <asm/spi.h>
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static struct resource cf_ide_resources[] = {
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[0] = {
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.start = PA_AREA5_IO + 0x1000,
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.end = PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = PA_AREA5_IO + 0x80c,
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.end = PA_AREA5_IO + 0x80c,
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.flags = IORESOURCE_MEM,
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},
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#ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
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[2] = {
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.start = IRQ_CF_IDE,
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.flags = IORESOURCE_IRQ,
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},
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#endif
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};
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static struct pata_platform_info pata_info = {
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.ioport_shift = 1,
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};
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static struct platform_device cf_ide_device = {
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.name = "pata_platform",
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.id = -1,
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.num_resources = ARRAY_SIZE(cf_ide_resources),
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.resource = cf_ide_resources,
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.dev = {
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.platform_data = &pata_info,
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},
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};
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static struct spi_board_info spi_bus[] = {
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{
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.modalias = "rtc-r9701",
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.max_speed_hz = 1000000,
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.mode = SPI_MODE_3,
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},
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};
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static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
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{
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BUG_ON(cs != 0); /* Single Epson RTC-9701JE attached on CS0 */
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__raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE);
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}
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static struct sh_spi_info spi_info = {
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.num_chipselect = 1,
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.chip_select = r2d_chip_select,
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};
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static struct resource spi_sh_sci_resources[] = {
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{
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.start = 0xffe00000,
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.end = 0xffe0001f,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device spi_sh_sci_device = {
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.name = "spi_sh_sci",
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.id = -1,
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.num_resources = ARRAY_SIZE(spi_sh_sci_resources),
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.resource = spi_sh_sci_resources,
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.dev = {
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.platform_data = &spi_info,
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},
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};
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static struct resource heartbeat_resources[] = {
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[0] = {
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.start = PA_OUTPORT,
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.end = PA_OUTPORT,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device heartbeat_device = {
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.name = "heartbeat",
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.id = -1,
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.num_resources = ARRAY_SIZE(heartbeat_resources),
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.resource = heartbeat_resources,
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};
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static struct resource sm501_resources[] = {
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[0] = {
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.start = 0x10000000,
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.end = 0x13e00000 - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 0x13e00000,
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.end = 0x13ffffff,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = IRQ_VOYAGER,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct fb_videomode sm501_default_mode = {
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.pixclock = 35714,
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.xres = 640,
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.yres = 480,
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.left_margin = 105,
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.right_margin = 50,
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.upper_margin = 35,
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.lower_margin = 0,
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.hsync_len = 96,
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.vsync_len = 2,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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};
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static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
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.def_bpp = 16,
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.def_mode = &sm501_default_mode,
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.flags = SM501FB_FLAG_USE_INIT_MODE |
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SM501FB_FLAG_USE_HWCURSOR |
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SM501FB_FLAG_USE_HWACCEL |
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SM501FB_FLAG_DISABLE_AT_EXIT,
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};
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static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
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.flags = (SM501FB_FLAG_USE_INIT_MODE |
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SM501FB_FLAG_USE_HWCURSOR |
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SM501FB_FLAG_USE_HWACCEL |
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SM501FB_FLAG_DISABLE_AT_EXIT),
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};
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static struct sm501_platdata_fb sm501_fb_pdata = {
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.fb_route = SM501_FB_OWN,
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.fb_crt = &sm501_pdata_fbsub_crt,
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.fb_pnl = &sm501_pdata_fbsub_pnl,
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.flags = SM501_FBPD_SWAP_FB_ENDIAN,
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};
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static struct sm501_initdata sm501_initdata = {
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.devices = SM501_USE_USB_HOST | SM501_USE_UART0,
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};
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static struct sm501_platdata sm501_platform_data = {
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.init = &sm501_initdata,
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.fb = &sm501_fb_pdata,
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};
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static struct platform_device sm501_device = {
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.name = "sm501",
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.id = -1,
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.dev = {
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.platform_data = &sm501_platform_data,
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},
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.num_resources = ARRAY_SIZE(sm501_resources),
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.resource = sm501_resources,
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};
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static struct mtd_partition r2d_partitions[] = {
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{
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.name = "U-Boot",
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.offset = 0x00000000,
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.size = 0x00040000,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "Environment",
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.offset = MTDPART_OFS_NXTBLK,
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.size = 0x00040000,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "Kernel",
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.offset = MTDPART_OFS_NXTBLK,
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.size = 0x001c0000,
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}, {
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.name = "Flash_FS",
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.offset = MTDPART_OFS_NXTBLK,
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.size = MTDPART_SIZ_FULL,
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}
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};
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static struct physmap_flash_data flash_data = {
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.width = 2,
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.nr_parts = ARRAY_SIZE(r2d_partitions),
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.parts = r2d_partitions,
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};
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static struct resource flash_resource = {
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.start = 0x00000000,
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.end = 0x02000000,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device flash_device = {
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.name = "physmap-flash",
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.id = -1,
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.resource = &flash_resource,
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.num_resources = 1,
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.dev = {
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.platform_data = &flash_data,
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},
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};
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static struct platform_device *rts7751r2d_devices[] __initdata = {
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&sm501_device,
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&heartbeat_device,
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&spi_sh_sci_device,
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};
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/*
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* The CF is connected with a 16-bit bus where 8-bit operations are
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* unsupported. The linux ata driver is however using 8-bit operations, so
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* insert a trapped io filter to convert 8-bit operations into 16-bit.
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*/
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static struct trapped_io cf_trapped_io = {
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.resource = cf_ide_resources,
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.num_resources = 2,
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.minimum_bus_width = 16,
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};
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static int __init rts7751r2d_devices_setup(void)
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{
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if (register_trapped_io(&cf_trapped_io) == 0)
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platform_device_register(&cf_ide_device);
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if (mach_is_r2d_plus())
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platform_device_register(&flash_device);
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spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
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return platform_add_devices(rts7751r2d_devices,
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ARRAY_SIZE(rts7751r2d_devices));
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}
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device_initcall(rts7751r2d_devices_setup);
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static void rts7751r2d_power_off(void)
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{
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__raw_writew(0x0001, PA_POWOFF);
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}
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/*
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* Initialize the board
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*/
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static void __init rts7751r2d_setup(char **cmdline_p)
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{
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void __iomem *sm501_reg;
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u16 ver = __raw_readw(PA_VERREG);
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printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
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printk(KERN_INFO "FPGA version:%d (revision:%d)\n",
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(ver >> 4) & 0xf, ver & 0xf);
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__raw_writew(0x0000, PA_OUTPORT);
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pm_power_off = rts7751r2d_power_off;
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/* sm501 dram configuration:
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* ColSizeX = 11 - External Memory Column Size: 256 words.
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* APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
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* RstX = 1 - External Memory Reset: Normal.
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* Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
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* BwC = 1 - Local Memory Block Write Cycle Time: 2 clocks.
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* BwP = 1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
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* AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
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* Rst = 1 - Internal Memory Reset: Normal.
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* RA = 1 - Internal Memory Remain in Active State: Do not remain.
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*/
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sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
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writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
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}
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/*
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* The Machine Vector
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*/
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static struct sh_machine_vector mv_rts7751r2d __initmv = {
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.mv_name = "RTS7751R2D",
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.mv_setup = rts7751r2d_setup,
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.mv_init_irq = init_rts7751r2d_IRQ,
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.mv_irq_demux = rts7751r2d_irq_demux,
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};
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