[RFC] pata_platform for ARM RiscPC

Russell King
2007-03-30T11:08:16Z

Add pata_platform device for RiscPC, thereby converting the primary
IDE channel on the machine to PATA.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

Since this is dependent on the previous patch (to avoid build errors)
this needs to wait until the devm_ioport patch is merged. I'll
therefore push this through the ARM tree at the appropriate time.

arch/arm/mach-rpc/riscpc.c | 35 +++++++++++++++++++++++++++++++++++
drivers/ata/Kconfig | 2 +-
2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
index 208a2b5..711a2db 100644
--- a/arch/arm/mach-rpc/riscpc.c
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -17,6 +17,7 @@
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/serial_8250.h>
+#include <linux/pata_platform.h>

#include <asm/elf.h>
#include <asm/io.h>
@@ -159,11 +160,45 @@ static struct plat_serial8250_port serial_platform_data[] = {
},
};

+static struct pata_platform_info pata_platform_data = {
+ .ioport_shift = 2,
+};
+
+static struct resource pata_resources[] = {
+ [0] = {
+ .start = 0x030107c0,
+ .end = 0x030107df,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 0x03010fd8,
+ .end = 0x03010fdb,
+ .flags = IORESOURCE_MEM,
+ },
+ [2] = {
+ .start = IRQ_HARDDISK,
+ .end = IRQ_HARDDISK,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device pata_device = {
+ .name = "pata_platform",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(pata_resources),
+ .resource = pata_resources,
+ .dev = {
+ .platform_data = &pata_platform_data,
+ .coherent_dma_mask = ~0, /* grumble */
+ },
+};
+
static struct platform_device *devs[] __initdata = {
&iomd_device,
&kbd_device,
&serial_device,
&acornfb_device,
+ &pata_device,
};

static int __init rpc_init(void)
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index d16b5b0..d8a9758 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -545,7 +545,7 @@ config PATA_WINBOND_VLB

config PATA_PLATFORM
tristate "Generic platform device PATA support"
- depends on EMBEDDED
+ depends on EMBEDDED || ARCH_RPC
help
This option enables support for generic directly connected ATA
devices commonly found on embedded systems.

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/