iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: OMAP2+: gpmc-nand: Modify Interrupt handling

Browse Source 
Now GPMC provides its client with interrupts that can be handled
using the standard interrupt API. Modify GPMC NAND setup to work
with it.

Also disable write protect in GPMC code, so that NAND driver can
be ignorant of GPMC configuration.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Afzal Mohammed 2012-08-30 12:53:24 -07:00 committed by Tony Lindgren
parent 6b6c32fc96
commit 2ee30f0511
1 changed files with 20 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
arch/arm/mach-omap2/gpmc-nand.c
View File

@ -21,15 +21,23 @@
#include <plat/board.h>
#include <plat/gpmc.h>
static struct resource gpmc_nand_resource = {
.flags = IORESOURCE_MEM,
static struct resource gpmc_nand_resource[] = {
{
.flags = IORESOURCE_MEM,
},
{
.flags = IORESOURCE_IRQ,
},
{
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device gpmc_nand_device = {
.name = "omap2-nand",
.id = 0,
.num_resources = 1,
.resource = &gpmc_nand_resource,
.num_resources = ARRAY_SIZE(gpmc_nand_resource),
.resource = gpmc_nand_resource,
};
static int omap2_nand_gpmc_retime(struct omap_nand_platform_data *gpmc_nand_data)
@ -75,6 +83,7 @@ static int omap2_nand_gpmc_retime(struct omap_nand_platform_data *gpmc_nand_data
gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_DEV_SIZE, 0);
gpmc_cs_configure(gpmc_nand_data->cs,
GPMC_CONFIG_DEV_TYPE, GPMC_DEVICETYPE_NAND);
gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_WP, 0);
err = gpmc_cs_set_timings(gpmc_nand_data->cs, &t);
if (err)
return err;
@ -90,14 +99,19 @@ int __init gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data)
gpmc_nand_device.dev.platform_data = gpmc_nand_data;
err = gpmc_cs_request(gpmc_nand_data->cs, NAND_IO_SIZE,
(unsigned long *)&gpmc_nand_resource.start);
(unsigned long *)&gpmc_nand_resource[0].start);
if (err < 0) {
dev_err(dev, "Cannot request GPMC CS\n");
return err;
}
gpmc_nand_resource.end = gpmc_nand_resource.start + NAND_IO_SIZE - 1;
gpmc_nand_resource[0].end = gpmc_nand_resource[0].start +
NAND_IO_SIZE - 1;
gpmc_nand_resource[1].start =
gpmc_get_client_irq(GPMC_IRQ_FIFOEVENTENABLE);
gpmc_nand_resource[2].start =
gpmc_get_client_irq(GPMC_IRQ_COUNT_EVENT);
/* Set timings in GPMC */
err = omap2_nand_gpmc_retime(gpmc_nand_data);
if (err < 0) {