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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2008-08-19 22:55:14 +0900
committerRalf Baechle <ralf@linux-mips.org>2008-10-11 16:18:44 +0100
commitd75a40e90e9eb08c2159e719a90a7922dab231d3 (patch)
tree5218a3fd78998fb47247ccbc35115a1cc42a265d /arch
parente6332374770ae5aa370af5792115261edbad05c1 (diff)
downloadlinux-d75a40e90e9eb08c2159e719a90a7922dab231d3.tar.bz2
MIPS: TXx9: Make spi_eeprom.c more generic
Helper routines in txx9/rbtx4938/spi_eeprom.c is not TX4938 specific. Move it to txx9/generic/ directory and make it works with SPI bus number other than 0. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> create mode 100644 arch/mips/txx9/generic/spi_eeprom.c delete mode 100644 arch/mips/txx9/rbtx4938/spi_eeprom.c
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/txx9/generic/Makefile1
-rw-r--r--arch/mips/txx9/generic/spi_eeprom.c (renamed from arch/mips/txx9/rbtx4938/spi_eeprom.c)28
-rw-r--r--arch/mips/txx9/rbtx4938/Makefile2
-rw-r--r--arch/mips/txx9/rbtx4938/setup.c11
4 files changed, 24 insertions, 18 deletions
diff --git a/arch/mips/txx9/generic/Makefile b/arch/mips/txx9/generic/Makefile
index 9bb34af26b73..986852cc774c 100644
--- a/arch/mips/txx9/generic/Makefile
+++ b/arch/mips/txx9/generic/Makefile
@@ -8,5 +8,6 @@ obj-$(CONFIG_SOC_TX3927) += setup_tx3927.o irq_tx3927.o
obj-$(CONFIG_SOC_TX4927) += mem_tx4927.o setup_tx4927.o irq_tx4927.o
obj-$(CONFIG_SOC_TX4938) += mem_tx4927.o setup_tx4938.o irq_tx4938.o
obj-$(CONFIG_TOSHIBA_FPCIB0) += smsc_fdc37m81x.o
+obj-$(CONFIG_SPI) += spi_eeprom.o
EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/txx9/rbtx4938/spi_eeprom.c b/arch/mips/txx9/generic/spi_eeprom.c
index a7ea8b041c1d..75c347238f47 100644
--- a/arch/mips/txx9/rbtx4938/spi_eeprom.c
+++ b/arch/mips/txx9/generic/spi_eeprom.c
@@ -18,29 +18,31 @@
#define AT250X0_PAGE_SIZE 8
/* register board information for at25 driver */
-int __init spi_eeprom_register(int chipid)
+int __init spi_eeprom_register(int busid, int chipid, int size)
{
- static struct spi_eeprom eeprom = {
- .name = "at250x0",
- .byte_len = 128,
- .page_size = AT250X0_PAGE_SIZE,
- .flags = EE_ADDR1,
- };
struct spi_board_info info = {
.modalias = "at25",
.max_speed_hz = 1500000, /* 1.5Mbps */
- .bus_num = 0,
+ .bus_num = busid,
.chip_select = chipid,
- .platform_data = &eeprom,
/* Mode 0: High-Active, Sample-Then-Shift */
};
-
+ struct spi_eeprom *eeprom;
+ eeprom = kzalloc(sizeof(*eeprom), GFP_KERNEL);
+ if (!eeprom)
+ return -ENOMEM;
+ strcpy(eeprom->name, "at250x0");
+ eeprom->byte_len = size;
+ eeprom->page_size = AT250X0_PAGE_SIZE;
+ eeprom->flags = EE_ADDR1;
+ info.platform_data = eeprom;
return spi_register_board_info(&info, 1);
}
/* simple temporary spi driver to provide early access to seeprom. */
static struct read_param {
+ int busid;
int chipid;
int address;
unsigned char *buf;
@@ -57,7 +59,8 @@ static int __init early_seeprom_probe(struct spi_device *spi)
dev_info(&spi->dev, "spiclk %u KHz.\n",
(spi->max_speed_hz + 500) / 1000);
- if (read_param->chipid != spi->chip_select)
+ if (read_param->busid != spi->master->bus_num ||
+ read_param->chipid != spi->chip_select)
return -ENODEV;
while (len > 0) {
/* spi_write_then_read can only work with small chunk */
@@ -80,11 +83,12 @@ static struct spi_driver early_seeprom_driver __initdata = {
.probe = early_seeprom_probe,
};
-int __init spi_eeprom_read(int chipid, int address,
+int __init spi_eeprom_read(int busid, int chipid, int address,
unsigned char *buf, int len)
{
int ret;
struct read_param param = {
+ .busid = busid,
.chipid = chipid,
.address = address,
.buf = buf,
diff --git a/arch/mips/txx9/rbtx4938/Makefile b/arch/mips/txx9/rbtx4938/Makefile
index 9dcc52ae5b9d..f3e1f597b4f1 100644
--- a/arch/mips/txx9/rbtx4938/Makefile
+++ b/arch/mips/txx9/rbtx4938/Makefile
@@ -1,3 +1,3 @@
-obj-y += prom.o setup.o irq.o spi_eeprom.o
+obj-y += prom.o setup.o irq.o
EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
index 7aba92a12399..ec6e81258f73 100644
--- a/arch/mips/txx9/rbtx4938/setup.c
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -111,6 +111,7 @@ static void __init rbtx4938_pci_setup(void)
#define SEEPROM2_CS 0 /* IOC */
#define SEEPROM3_CS 1 /* IOC */
#define SRTC_CS 2 /* IOC */
+#define SPI_BUSNO 0
static int __init rbtx4938_ethaddr_init(void)
{
@@ -120,7 +121,7 @@ static int __init rbtx4938_ethaddr_init(void)
int i;
/* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
- if (spi_eeprom_read(SEEPROM1_CS, 0, dat, sizeof(dat))) {
+ if (spi_eeprom_read(SPI_BUSNO, SEEPROM1_CS, 0, dat, sizeof(dat))) {
printk(KERN_ERR "seeprom: read error.\n");
return -ENODEV;
} else {
@@ -287,9 +288,9 @@ static int __init rbtx4938_spi_init(void)
.mode = SPI_MODE_1 | SPI_CS_HIGH,
};
spi_register_board_info(&srtc_info, 1);
- spi_eeprom_register(SEEPROM1_CS);
- spi_eeprom_register(16 + SEEPROM2_CS);
- spi_eeprom_register(16 + SEEPROM3_CS);
+ spi_eeprom_register(SPI_BUSNO, SEEPROM1_CS, 128);
+ spi_eeprom_register(SPI_BUSNO, 16 + SEEPROM2_CS, 128);
+ spi_eeprom_register(SPI_BUSNO, 16 + SEEPROM3_CS, 128);
gpio_request(16 + SRTC_CS, "rtc-rs5c348");
gpio_direction_output(16 + SRTC_CS, 0);
gpio_request(SEEPROM1_CS, "seeprom1");
@@ -298,7 +299,7 @@ static int __init rbtx4938_spi_init(void)
gpio_direction_output(16 + SEEPROM2_CS, 1);
gpio_request(16 + SEEPROM3_CS, "seeprom3");
gpio_direction_output(16 + SEEPROM3_CS, 1);
- tx4938_spi_init(0);
+ tx4938_spi_init(SPI_BUSNO);
return 0;
}