| From 20b54b0aeb02bcab6df237edd65fb9b69eaaf6c5 Mon Sep 17 00:00:00 2001 |
| From: Geert Uytterhoeven <geert+renesas@linux-m68k.org> |
| Date: Tue, 4 Feb 2014 16:23:56 +0100 |
| Subject: ARM: shmobile: genmai legacy: Add RSPI support |
| |
| Add RSPI platform device, resources, platform data, and SPI child. |
| |
| On this board, only rspi4 is in use. Its bus contains a single device |
| (a wm8978 audio codec). |
| |
| Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> |
| Acked-by: Magnus Damm <damm@opensource.se> |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| (cherry picked from commit 664517474c4993c5d560d0e394c36583b7c99535) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| arch/arm/mach-shmobile/board-genmai.c | 44 +++++++++++++++++++++++++++++++++++ |
| 1 file changed, 44 insertions(+) |
| |
| diff --git a/arch/arm/mach-shmobile/board-genmai.c b/arch/arm/mach-shmobile/board-genmai.c |
| index 3e92e3c62d4c..c4064610e223 100644 |
| --- a/arch/arm/mach-shmobile/board-genmai.c |
| +++ b/arch/arm/mach-shmobile/board-genmai.c |
| @@ -20,15 +20,59 @@ |
| |
| #include <linux/kernel.h> |
| #include <linux/platform_device.h> |
| +#include <linux/spi/rspi.h> |
| +#include <linux/spi/spi.h> |
| #include <mach/common.h> |
| +#include <mach/irqs.h> |
| #include <mach/r7s72100.h> |
| #include <asm/mach-types.h> |
| #include <asm/mach/arch.h> |
| |
| +/* RSPI */ |
| +#define RSPI_RESOURCE(idx, baseaddr, irq) \ |
| +static const struct resource rspi##idx##_resources[] __initconst = { \ |
| + DEFINE_RES_MEM(baseaddr, 0x24), \ |
| + DEFINE_RES_IRQ_NAMED(irq, "error"), \ |
| + DEFINE_RES_IRQ_NAMED(irq + 1, "rx"), \ |
| + DEFINE_RES_IRQ_NAMED(irq + 2, "tx"), \ |
| +} |
| + |
| +RSPI_RESOURCE(0, 0xe800c800, gic_iid(270)); |
| +RSPI_RESOURCE(1, 0xe800d000, gic_iid(273)); |
| +RSPI_RESOURCE(2, 0xe800d800, gic_iid(276)); |
| +RSPI_RESOURCE(3, 0xe800e000, gic_iid(279)); |
| +RSPI_RESOURCE(4, 0xe800e800, gic_iid(282)); |
| + |
| +static const struct rspi_plat_data rspi_pdata __initconst = { |
| + .num_chipselect = 1, |
| +}; |
| + |
| +#define r7s72100_register_rspi(idx) \ |
| + platform_device_register_resndata(&platform_bus, "rspi-rz", idx, \ |
| + rspi##idx##_resources, \ |
| + ARRAY_SIZE(rspi##idx##_resources), \ |
| + &rspi_pdata, sizeof(rspi_pdata)) |
| + |
| +static const struct spi_board_info spi_info[] __initconst = { |
| + { |
| + .modalias = "wm8978", |
| + .max_speed_hz = 5000000, |
| + .bus_num = 4, |
| + .chip_select = 0, |
| + }, |
| +}; |
| + |
| static void __init genmai_add_standard_devices(void) |
| { |
| r7s72100_clock_init(); |
| r7s72100_add_dt_devices(); |
| + |
| + r7s72100_register_rspi(0); |
| + r7s72100_register_rspi(1); |
| + r7s72100_register_rspi(2); |
| + r7s72100_register_rspi(3); |
| + r7s72100_register_rspi(4); |
| + spi_register_board_info(spi_info, ARRAY_SIZE(spi_info)); |
| } |
| |
| static const char * const genmai_boards_compat_dt[] __initconst = { |
| -- |
| 2.1.2 |
| |