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| author | Magnus Damm <magnus.damm@gmail.com> | 2008-02-07 20:21:10 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-02-14 14:22:09 +0900 |
| commit | 2d952b4b8c94ed8576b4221dad9654c5d98275d0 (patch) | |
| tree | 5da9ac33e72153617cec9dcbb0e0cb4707782108 /arch/sh | |
| parent | e7cc9a7340b8ec018caa9eb1d035fdaef1f2fc51 (diff) | |
| download | linux-3.10-2d952b4b8c94ed8576b4221dad9654c5d98275d0.tar.gz linux-3.10-2d952b4b8c94ed8576b4221dad9654c5d98275d0.tar.bz2 linux-3.10-2d952b4b8c94ed8576b4221dad9654c5d98275d0.zip | |
sh: trapped io support for r2d V2
This patch converts the CF device on r2d boards from machvec readb/writeb
to trapped io.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/Kconfig | 1 | ||||
| -rw-r--r-- | arch/sh/boards/renesas/rts7751r2d/setup.c | 45 |
2 files changed, 15 insertions, 31 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index f61bf17db39..0d288fe8702 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -459,6 +459,7 @@ config SH_RTS7751R2D bool "RTS7751R2D" depends on CPU_SUBTYPE_SH7751R select SYS_SUPPORTS_PCI + select IO_TRAPPED help Select RTS7751R2D if configuring for a Renesas Technology Sales SH-Graphics board. diff --git a/arch/sh/boards/renesas/rts7751r2d/setup.c b/arch/sh/boards/renesas/rts7751r2d/setup.c index a0ef81b7de3..f21ee49ef3a 100644 --- a/arch/sh/boards/renesas/rts7751r2d/setup.c +++ b/arch/sh/boards/renesas/rts7751r2d/setup.c @@ -21,6 +21,7 @@ #include <asm/machvec.h> #include <asm/rts7751r2d.h> #include <asm/io.h> +#include <asm/io_trapped.h> #include <asm/spi.h> static struct resource cf_ide_resources[] = { @@ -214,13 +215,25 @@ static struct platform_device *rts7751r2d_devices[] __initdata = { &uart_device, &sm501_device, #endif - &cf_ide_device, &heartbeat_device, &spi_sh_sci_device, }; +/* + * The CF is connected with a 16-bit bus where 8-bit operations are + * unsupported. The linux ata driver is however using 8-bit operations, so + * insert a trapped io filter to convert 8-bit operations into 16-bit. + */ +static struct trapped_io cf_trapped_io = { + .resource = cf_ide_resources, + .num_resources = 2, + .minimum_bus_width = 16, +}; + static int __init rts7751r2d_devices_setup(void) { + if (register_trapped_io(&cf_trapped_io) == 0) + platform_device_register(&cf_ide_device); spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus)); return platform_add_devices(rts7751r2d_devices, ARRAY_SIZE(rts7751r2d_devices)); @@ -232,34 +245,6 @@ static void rts7751r2d_power_off(void) ctrl_outw(0x0001, PA_POWOFF); } -static inline unsigned char is_ide_ioaddr(unsigned long addr) -{ - return ((cf_ide_resources[0].start <= addr && - addr <= cf_ide_resources[0].end) || - (cf_ide_resources[1].start <= addr && - addr <= cf_ide_resources[1].end)); -} - -void rts7751r2d_writeb(u8 b, void __iomem *addr) -{ - unsigned long tmp = (unsigned long __force)addr; - - if (is_ide_ioaddr(tmp)) - ctrl_outw((u16)b, tmp); - else - ctrl_outb(b, tmp); -} - -u8 rts7751r2d_readb(void __iomem *addr) -{ - unsigned long tmp = (unsigned long __force)addr; - - if (is_ide_ioaddr(tmp)) - return ctrl_inw(tmp) & 0xff; - else - return ctrl_inb(tmp); -} - /* * Initialize the board */ @@ -310,6 +295,4 @@ static struct sh_machine_vector mv_rts7751r2d __initmv = { .mv_setup = rts7751r2d_setup, .mv_init_irq = init_rts7751r2d_IRQ, .mv_irq_demux = rts7751r2d_irq_demux, - .mv_writeb = rts7751r2d_writeb, - .mv_readb = rts7751r2d_readb, }; |