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ARM: shmobile: genmai legacy: Add RSPI support

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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>
This commit is contained in:
Geert Uytterhoeven 2014-02-04 16:23:56 +01:00 committed by Simon Horman
parent c73c7ff8d5
commit 664517474c
1 changed files with 44 additions and 0 deletions
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44
arch/arm/mach-shmobile/board-genmai.c
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@ -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 = {