diff options
author | Magnus Damm <magnus.damm@gmail.com> | 2008-01-23 02:21:18 -0500 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 02:24:46 -0500 |
commit | 6582d7b7376aa587d74b08c74457dc28abc1a9fa (patch) | |
tree | 2f069e6ec29cdcfedb400b437dd8f02079410522 /arch/sh/boards | |
parent | da2d7f4bc578651455a7353995beb87db3cd8815 (diff) |
sh: add spi header and r2d platform data V3
This patch adds the header file asm/spi.h and board specific code for the
r2d board. The header file contains a structure that should be used to
point out a single spi bus. The board specific code for r2d is updated with
such a structure for the new spi_sh_sci driver. The structure contains a
chip select callback plus information about the R9701 rtc chip which is
attached to the spi bus.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards')
-rw-r--r-- | arch/sh/boards/renesas/rts7751r2d/setup.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/sh/boards/renesas/rts7751r2d/setup.c b/arch/sh/boards/renesas/rts7751r2d/setup.c index 8528616feaa0..3452b072adde 100644 --- a/arch/sh/boards/renesas/rts7751r2d/setup.c +++ b/arch/sh/boards/renesas/rts7751r2d/setup.c | |||
@@ -16,9 +16,12 @@ | |||
16 | #include <linux/sm501-regs.h> | 16 | #include <linux/sm501-regs.h> |
17 | #include <linux/pm.h> | 17 | #include <linux/pm.h> |
18 | #include <linux/fb.h> | 18 | #include <linux/fb.h> |
19 | #include <linux/spi/spi.h> | ||
20 | #include <linux/spi/spi_bitbang.h> | ||
19 | #include <asm/machvec.h> | 21 | #include <asm/machvec.h> |
20 | #include <asm/rts7751r2d.h> | 22 | #include <asm/rts7751r2d.h> |
21 | #include <asm/io.h> | 23 | #include <asm/io.h> |
24 | #include <asm/spi.h> | ||
22 | 25 | ||
23 | static struct resource cf_ide_resources[] = { | 26 | static struct resource cf_ide_resources[] = { |
24 | [0] = { | 27 | [0] = { |
@@ -53,6 +56,43 @@ static struct platform_device cf_ide_device = { | |||
53 | }, | 56 | }, |
54 | }; | 57 | }; |
55 | 58 | ||
59 | static struct spi_board_info spi_bus[] = { | ||
60 | { | ||
61 | .modalias = "rtc-r9701", | ||
62 | .max_speed_hz = 1000000, | ||
63 | .mode = SPI_MODE_3, | ||
64 | }, | ||
65 | }; | ||
66 | |||
67 | static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state) | ||
68 | { | ||
69 | BUG_ON(cs != 0); /* Single Epson RTC-9701JE attached on CS0 */ | ||
70 | ctrl_outw(state == BITBANG_CS_ACTIVE, PA_RTCCE); | ||
71 | } | ||
72 | |||
73 | static struct sh_spi_info spi_info = { | ||
74 | .num_chipselect = 1, | ||
75 | .chip_select = r2d_chip_select, | ||
76 | }; | ||
77 | |||
78 | static struct resource spi_sh_sci_resources[] = { | ||
79 | { | ||
80 | .start = 0xffe00000, | ||
81 | .end = 0xffe0001f, | ||
82 | .flags = IORESOURCE_MEM, | ||
83 | }, | ||
84 | }; | ||
85 | |||
86 | static struct platform_device spi_sh_sci_device = { | ||
87 | .name = "spi_sh_sci", | ||
88 | .id = -1, | ||
89 | .num_resources = ARRAY_SIZE(spi_sh_sci_resources), | ||
90 | .resource = spi_sh_sci_resources, | ||
91 | .dev = { | ||
92 | .platform_data = &spi_info, | ||
93 | }, | ||
94 | }; | ||
95 | |||
56 | static struct resource heartbeat_resources[] = { | 96 | static struct resource heartbeat_resources[] = { |
57 | [0] = { | 97 | [0] = { |
58 | .start = PA_OUTPORT, | 98 | .start = PA_OUTPORT, |
@@ -176,10 +216,12 @@ static struct platform_device *rts7751r2d_devices[] __initdata = { | |||
176 | #endif | 216 | #endif |
177 | &cf_ide_device, | 217 | &cf_ide_device, |
178 | &heartbeat_device, | 218 | &heartbeat_device, |
219 | &spi_sh_sci_device, | ||
179 | }; | 220 | }; |
180 | 221 | ||
181 | static int __init rts7751r2d_devices_setup(void) | 222 | static int __init rts7751r2d_devices_setup(void) |
182 | { | 223 | { |
224 | spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus)); | ||
183 | return platform_add_devices(rts7751r2d_devices, | 225 | return platform_add_devices(rts7751r2d_devices, |
184 | ARRAY_SIZE(rts7751r2d_devices)); | 226 | ARRAY_SIZE(rts7751r2d_devices)); |
185 | } | 227 | } |