b5751e2e00
R7780RP can't do byte-sized accesses to CF, so needs to do word
sized access with low-byte masking. This same problem exists
on older versions of the R2D, with the same workaround having
been implemented in 43f4b8c757
there. Follow that change for the highlander boards.
This does not impact R7780MP or SH7785 based Highlander modules.
If you're unfortunate enough to be stuck with an R7780RP, this
patch is for you!
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
342 lines
7.2 KiB
C
342 lines
7.2 KiB
C
/*
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* arch/sh/boards/renesas/r7780rp/setup.c
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*
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* Renesas Solutions Highlander Support.
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*
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* Copyright (C) 2002 Atom Create Engineering Co., Ltd.
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* Copyright (C) 2005 - 2007 Paul Mundt
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*
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* This contains support for the R7780RP-1, R7780MP, and R7785RP
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* Highlander modules.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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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/pata_platform.h>
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#include <linux/types.h>
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#include <net/ax88796.h>
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#include <asm/machvec.h>
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#include <asm/r7780rp.h>
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#include <asm/clock.h>
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#include <asm/heartbeat.h>
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#include <asm/io.h>
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static struct resource r8a66597_usb_host_resources[] = {
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[0] = {
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.name = "r8a66597_hcd",
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.start = 0xA4200000,
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.end = 0xA42000FF,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "r8a66597_hcd",
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.start = IRQ_EXT1, /* irq number */
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.end = IRQ_EXT1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device r8a66597_usb_host_device = {
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.name = "r8a66597_hcd",
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.id = -1,
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.dev = {
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.dma_mask = NULL, /* don't use dma */
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.coherent_dma_mask = 0xffffffff,
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},
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.num_resources = ARRAY_SIZE(r8a66597_usb_host_resources),
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.resource = r8a66597_usb_host_resources,
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};
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static struct resource m66592_usb_peripheral_resources[] = {
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[0] = {
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.name = "m66592_udc",
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.start = 0xb0000000,
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.end = 0xb00000FF,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "m66592_udc",
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.start = IRQ_EXT4, /* irq number */
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.end = IRQ_EXT4,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device m66592_usb_peripheral_device = {
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.name = "m66592_udc",
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.id = -1,
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.dev = {
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.dma_mask = NULL, /* don't use dma */
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.coherent_dma_mask = 0xffffffff,
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},
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.num_resources = ARRAY_SIZE(m66592_usb_peripheral_resources),
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.resource = m66592_usb_peripheral_resources,
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};
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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 + 0x08 - 1,
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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 + 0x16 - 1,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = IRQ_CF,
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.flags = IORESOURCE_IRQ,
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},
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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 resource heartbeat_resources[] = {
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[0] = {
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.start = PA_OBLED,
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.end = PA_OBLED,
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.flags = IORESOURCE_MEM,
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},
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};
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#ifndef CONFIG_SH_R7785RP
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static unsigned char heartbeat_bit_pos[] = { 2, 1, 0, 3, 6, 5, 4, 7 };
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static struct heartbeat_data heartbeat_data = {
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.bit_pos = heartbeat_bit_pos,
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.nr_bits = ARRAY_SIZE(heartbeat_bit_pos),
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};
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#endif
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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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/* R7785RP has a slightly more sensible FPGA.. */
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#ifndef CONFIG_SH_R7785RP
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.dev = {
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.platform_data = &heartbeat_data,
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},
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#endif
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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 ax_plat_data ax88796_platdata = {
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.flags = AXFLG_HAS_93CX6,
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.wordlength = 2,
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.dcr_val = 0x1,
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.rcr_val = 0x40,
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};
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static struct resource ax88796_resources[] = {
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{
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#ifdef CONFIG_SH_R7780RP
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.start = 0xa5800400,
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.end = 0xa5800400 + (0x20 * 0x2) - 1,
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#else
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.start = 0xa4100400,
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.end = 0xa4100400 + (0x20 * 0x2) - 1,
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#endif
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.flags = IORESOURCE_MEM,
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},
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{
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.start = IRQ_AX88796,
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.end = IRQ_AX88796,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device ax88796_device = {
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.name = "ax88796",
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.id = 0,
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.dev = {
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.platform_data = &ax88796_platdata,
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},
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.num_resources = ARRAY_SIZE(ax88796_resources),
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.resource = ax88796_resources,
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};
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static struct platform_device *r7780rp_devices[] __initdata = {
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&r8a66597_usb_host_device,
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&m66592_usb_peripheral_device,
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&cf_ide_device,
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&heartbeat_device,
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&ax88796_device,
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};
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static int __init r7780rp_devices_setup(void)
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{
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return platform_add_devices(r7780rp_devices,
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ARRAY_SIZE(r7780rp_devices));
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}
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device_initcall(r7780rp_devices_setup);
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/*
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* Platform specific clocks
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*/
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static void ivdr_clk_enable(struct clk *clk)
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{
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ctrl_outw(ctrl_inw(PA_IVDRCTL) | (1 << IVDR_CK_ON), PA_IVDRCTL);
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}
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static void ivdr_clk_disable(struct clk *clk)
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{
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ctrl_outw(ctrl_inw(PA_IVDRCTL) & ~(1 << IVDR_CK_ON), PA_IVDRCTL);
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}
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static struct clk_ops ivdr_clk_ops = {
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.enable = ivdr_clk_enable,
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.disable = ivdr_clk_disable,
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};
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static struct clk ivdr_clk = {
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.name = "ivdr_clk",
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.ops = &ivdr_clk_ops,
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};
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static struct clk *r7780rp_clocks[] = {
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&ivdr_clk,
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};
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static void r7780rp_power_off(void)
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{
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if (mach_is_r7780mp() || mach_is_r7785rp())
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ctrl_outw(0x0001, PA_POFF);
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}
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static inline unsigned char is_ide_ioaddr(unsigned long addr)
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{
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return ((cf_ide_resources[0].start <= addr &&
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addr <= cf_ide_resources[0].end) ||
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(cf_ide_resources[1].start <= addr &&
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addr <= cf_ide_resources[1].end));
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}
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void highlander_writeb(u8 b, void __iomem *addr)
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{
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unsigned long tmp = (unsigned long __force)addr;
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if (is_ide_ioaddr(tmp))
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ctrl_outw((u16)b, tmp);
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else
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ctrl_outb(b, tmp);
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}
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u8 highlander_readb(void __iomem *addr)
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{
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unsigned long tmp = (unsigned long __force)addr;
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if (is_ide_ioaddr(tmp))
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return ctrl_inw(tmp) & 0xff;
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else
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return ctrl_inb(tmp);
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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 highlander_setup(char **cmdline_p)
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{
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u16 ver = ctrl_inw(PA_VERREG);
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int i;
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printk(KERN_INFO "Renesas Solutions Highlander %s support.\n",
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mach_is_r7780rp() ? "R7780RP-1" :
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mach_is_r7780mp() ? "R7780MP" :
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"R7785RP");
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printk(KERN_INFO "Board version: %d (revision %d), "
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"FPGA version: %d (revision %d)\n",
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(ver >> 12) & 0xf, (ver >> 8) & 0xf,
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(ver >> 4) & 0xf, ver & 0xf);
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/*
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* Enable the important clocks right away..
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*/
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for (i = 0; i < ARRAY_SIZE(r7780rp_clocks); i++) {
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struct clk *clk = r7780rp_clocks[i];
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clk_register(clk);
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clk_enable(clk);
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}
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ctrl_outw(0x0000, PA_OBLED); /* Clear LED. */
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if (mach_is_r7780rp())
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ctrl_outw(0x0001, PA_SDPOW); /* SD Power ON */
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ctrl_outw(ctrl_inw(PA_IVDRCTL) | 0x01, PA_IVDRCTL); /* Si13112 */
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pm_power_off = r7780rp_power_off;
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}
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static unsigned char irl2irq[HL_NR_IRL];
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int highlander_irq_demux(int irq)
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{
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if (irq >= HL_NR_IRL || !irl2irq[irq])
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return irq;
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return irl2irq[irq];
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}
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void __init highlander_init_irq(void)
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{
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unsigned char *ucp = NULL;
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do {
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#ifdef CONFIG_SH_R7780MP
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ucp = highlander_init_irq_r7780mp();
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if (ucp)
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break;
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#endif
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#ifdef CONFIG_SH_R7785RP
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ucp = highlander_init_irq_r7785rp();
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if (ucp)
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break;
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#endif
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#ifdef CONFIG_SH_R7780RP
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highlander_init_irq_r7780rp();
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ucp = irl2irq;
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break;
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#endif
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} while (0);
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if (ucp) {
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plat_irq_setup_pins(IRQ_MODE_IRL3210);
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memcpy(irl2irq, ucp, HL_NR_IRL);
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}
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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_highlander __initmv = {
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.mv_name = "Highlander",
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.mv_setup = highlander_setup,
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.mv_init_irq = highlander_init_irq,
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.mv_irq_demux = highlander_irq_demux,
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.mv_readb = highlander_readb,
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.mv_writeb = highlander_writeb,
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};
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