[PATCH RESEND v8 3/7] omap: gpmc: enable irq mode in gpmc
Sukumar Ghorai
s-ghorai at ti.com
Wed Jan 19 08:24:59 EST 2011
add support the irq mode in GPMC.
gpmc_init() function move after omap_init_irq() as it has dependecy on irq.
Signed-off-by: Sukumar Ghorai <s-ghorai at ti.com>
---
arch/arm/mach-omap2/board-2430sdp.c | 1 +
arch/arm/mach-omap2/board-3430sdp.c | 1 +
arch/arm/mach-omap2/board-3630sdp.c | 1 +
arch/arm/mach-omap2/board-4430sdp.c | 2 +
arch/arm/mach-omap2/board-am3517evm.c | 2 +
arch/arm/mach-omap2/board-apollon.c | 1 +
arch/arm/mach-omap2/board-cm-t35.c | 1 +
arch/arm/mach-omap2/board-devkit8000.c | 1 +
arch/arm/mach-omap2/board-generic.c | 2 +
arch/arm/mach-omap2/board-h4.c | 1 +
arch/arm/mach-omap2/board-igep0020.c | 1 +
arch/arm/mach-omap2/board-ldp.c | 1 +
arch/arm/mach-omap2/board-n8x0.c | 2 +
arch/arm/mach-omap2/board-omap3beagle.c | 1 +
arch/arm/mach-omap2/board-omap3evm.c | 2 +
arch/arm/mach-omap2/board-omap3pandora.c | 2 +
arch/arm/mach-omap2/board-omap3stalker.c | 1 +
arch/arm/mach-omap2/board-omap3touchbook.c | 1 +
arch/arm/mach-omap2/board-omap4panda.c | 2 +
arch/arm/mach-omap2/board-overo.c | 1 +
arch/arm/mach-omap2/board-rx51.c | 1 +
arch/arm/mach-omap2/board-zoom.c | 2 +
arch/arm/mach-omap2/gpmc.c | 39 ++++++++++++++++++++++++++-
arch/arm/mach-omap2/io.c | 3 --
arch/arm/plat-omap/include/plat/gpmc.h | 4 +++
arch/arm/plat-omap/include/plat/irqs.h | 9 +++++-
26 files changed, 79 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index e066177..527374f 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -146,6 +146,7 @@ static void __init omap_2430sdp_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
}
static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index 8fb5f43..8304d16 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -335,6 +335,7 @@ static void __init omap_3430sdp_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(hyb18m512160af6_sdrc_params, NULL);
omap_init_irq();
+ gpmc_init();
}
static int sdp3430_batt_table[] = {
diff --git a/arch/arm/mach-omap2/board-3630sdp.c b/arch/arm/mach-omap2/board-3630sdp.c
index b4ca7fc..befebde 100644
--- a/arch/arm/mach-omap2/board-3630sdp.c
+++ b/arch/arm/mach-omap2/board-3630sdp.c
@@ -78,6 +78,7 @@ static void __init omap_sdp_init_irq(void)
omap2_init_common_devices(h8mbx00u0mer0em_sdrc_params,
h8mbx00u0mer0em_sdrc_params);
omap_init_irq();
+ gpmc_init();
}
#ifdef CONFIG_OMAP_MUX
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 07d1b20..2c125ab 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -35,6 +35,7 @@
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/mmc.h>
+#include <plat/gpmc.h>
#include "mux.h"
#include "hsmmc.h"
@@ -249,6 +250,7 @@ static void __init omap_4430sdp_init_irq(void)
omap2_gp_clockevent_set_gptimer(1);
#endif
gic_init_irq();
+ gpmc_init();
}
static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c
index 10d60b7..2d87087 100644
--- a/arch/arm/mach-omap2/board-am3517evm.c
+++ b/arch/arm/mach-omap2/board-am3517evm.c
@@ -35,6 +35,7 @@
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/display.h>
+#include <plat/gpmc.h>
#include <plat/panel-generic-dpi.h>
#include "mux.h"
@@ -403,6 +404,7 @@ static void __init am3517_evm_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
}
static struct omap_musb_board_data musb_board_data = {
diff --git a/arch/arm/mach-omap2/board-apollon.c b/arch/arm/mach-omap2/board-apollon.c
index 9f55b68..09f6322 100644
--- a/arch/arm/mach-omap2/board-apollon.c
+++ b/arch/arm/mach-omap2/board-apollon.c
@@ -281,6 +281,7 @@ static void __init omap_apollon_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
}
static void __init apollon_led_init(void)
diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
index dac1416..8aca46f 100644
--- a/arch/arm/mach-omap2/board-cm-t35.c
+++ b/arch/arm/mach-omap2/board-cm-t35.c
@@ -692,6 +692,7 @@ static void __init cm_t35_init_irq(void)
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
}
static struct omap_board_mux board_mux[] __initdata = {
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index 00bb1fc..27ae379 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
@@ -458,6 +458,7 @@ static void __init devkit8000_init_irq(void)
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 0e3d81e..d2ba70c 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -29,6 +29,7 @@
#include <plat/usb.h>
#include <plat/board.h>
#include <plat/common.h>
+#include <plat/gpmc.h>
static struct omap_board_config_kernel generic_config[] = {
};
@@ -40,6 +41,7 @@ static void __init omap_generic_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
}
static void __init omap_generic_init(void)
diff --git a/arch/arm/mach-omap2/board-h4.c b/arch/arm/mach-omap2/board-h4.c
index 25cc9da..2ca224e 100644
--- a/arch/arm/mach-omap2/board-h4.c
+++ b/arch/arm/mach-omap2/board-h4.c
@@ -297,6 +297,7 @@ static void __init omap_h4_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
h4_init_flash();
}
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 3be85a1..bf92442 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -531,6 +531,7 @@ static void __init igep2_init_irq(void)
omap2_init_common_devices(m65kxxxxam_sdrc_params,
m65kxxxxam_sdrc_params);
omap_init_irq();
+ gpmc_init();
}
static struct twl4030_codec_audio_data igep2_audio_data = {
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index d986d32..66fed88 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -295,6 +295,7 @@ static void __init omap_ldp_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
}
static struct twl4030_usb_data ldp_usb_data = {
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index f396756..f4613c3 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -33,6 +33,7 @@
#include <plat/onenand.h>
#include <plat/mmc.h>
#include <plat/serial.h>
+#include <plat/gpmc.h>
#include "mux.h"
@@ -633,6 +634,7 @@ static void __init n8x0_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
+ gpmc_init();
}
#ifdef CONFIG_OMAP_MUX
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 46d814a..e2db779 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -542,6 +542,7 @@ static void __init omap3_beagle_init_irq(void)
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 323c380..47397f3 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -43,6 +43,7 @@
#include <plat/common.h>
#include <plat/mcspi.h>
#include <plat/display.h>
+#include <plat/gpmc.h>
#include <plat/panel-generic-dpi.h>
#include "mux.h"
@@ -632,6 +633,7 @@ static void __init omap3_evm_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(mt46h32m32lf6_sdrc_params, NULL);
omap_init_irq();
+ gpmc_init();
}
static struct platform_device *omap3_evm_devices[] __initdata = {
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 0b34bed..717d33c 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -47,6 +47,7 @@
#include <plat/mcspi.h>
#include <plat/usb.h>
#include <plat/display.h>
+#include <plat/gpmc.h>
#include <plat/nand.h>
#include "mux.h"
@@ -640,6 +641,7 @@ static void __init omap3pandora_init_irq(void)
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
}
static void __init pandora_wl1251_init(void)
diff --git a/arch/arm/mach-omap2/board-omap3stalker.c b/arch/arm/mach-omap2/board-omap3stalker.c
index 2a2dad4..91c4ba6 100644
--- a/arch/arm/mach-omap2/board-omap3stalker.c
+++ b/arch/arm/mach-omap2/board-omap3stalker.c
@@ -598,6 +598,7 @@ static void __init omap3_stalker_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(mt46h32m32lf6_sdrc_params, NULL);
omap_init_irq();
+ gpmc_init();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
diff --git a/arch/arm/mach-omap2/board-omap3touchbook.c b/arch/arm/mach-omap2/board-omap3touchbook.c
index db1f74f..19167f5 100644
--- a/arch/arm/mach-omap2/board-omap3touchbook.c
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -424,6 +424,7 @@ static void __init omap3_touchbook_init_irq(void)
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index e001a04..226affb 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -37,6 +37,7 @@
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/mmc.h>
+#include <plat/gpmc.h>
#include "timer-gp.h"
#include "hsmmc.h"
@@ -81,6 +82,7 @@ static void __init omap4_panda_init_irq(void)
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
gic_init_irq();
+ gpmc_init();
}
static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index cb26e5d..05784ff 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -417,6 +417,7 @@ static void __init overo_init_irq(void)
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
}
static struct platform_device *overo_devices[] __initdata = {
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c
index f53fc55..0f37e20 100644
--- a/arch/arm/mach-omap2/board-rx51.c
+++ b/arch/arm/mach-omap2/board-rx51.c
@@ -109,6 +109,7 @@ static void __init rx51_init_irq(void)
sdrc_params = nokia_get_sdram_timings();
omap2_init_common_devices(sdrc_params, sdrc_params);
omap_init_irq();
+ gpmc_init();
}
extern void __init rx51_peripherals_init(void);
diff --git a/arch/arm/mach-omap2/board-zoom.c b/arch/arm/mach-omap2/board-zoom.c
index 0242611..11ef6f5 100644
--- a/arch/arm/mach-omap2/board-zoom.c
+++ b/arch/arm/mach-omap2/board-zoom.c
@@ -24,6 +24,7 @@
#include <plat/common.h>
#include <plat/board.h>
#include <plat/usb.h>
+#include <plat/gpmc.h>
#include <mach/board-zoom.h>
@@ -45,6 +46,7 @@ static void __init omap_zoom_init_irq(void)
h8mbx00u0mer0em_sdrc_params);
omap_init_irq();
+ gpmc_init();
}
#ifdef CONFIG_OMAP_MUX
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 1b7b3e7..b198598 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -14,6 +14,7 @@
*/
#undef DEBUG
+#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/err.h>
@@ -22,12 +23,12 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/interrupt.h>
#include <asm/mach-types.h>
#include <plat/gpmc.h>
#include <plat/sdrc.h>
-
/* GPMC register offsets */
#define GPMC_REVISION 0x00
#define GPMC_SYSCONFIG 0x10
@@ -100,6 +101,8 @@ static void __iomem *gpmc_base;
static struct clk *gpmc_l3_clk;
+static irqreturn_t gpmc_handle_irq(int irq, void *dev);
+
static void gpmc_write_reg(int idx, u32 val)
{
__raw_writel(val, gpmc_base + idx);
@@ -497,6 +500,10 @@ int gpmc_cs_configure(int cs, int cmd, int wval)
u32 regval = 0;
switch (cmd) {
+ case GPMC_ENABLE_IRQ:
+ gpmc_write_reg(GPMC_IRQENABLE, wval);
+ break;
+
case GPMC_SET_IRQ_STATUS:
gpmc_write_reg(GPMC_IRQSTATUS, wval);
break;
@@ -680,7 +687,8 @@ static void __init gpmc_mem_init(void)
void __init gpmc_init(void)
{
- u32 l;
+ u32 l, irq;
+ int cs;
char *ck = NULL;
if (cpu_is_omap24xx()) {
@@ -723,6 +731,33 @@ void __init gpmc_init(void)
l |= (0x02 << 3) | (1 << 0);
gpmc_write_reg(GPMC_SYSCONFIG, l);
gpmc_mem_init();
+
+ /* initalize the irq_chained */
+ irq = OMAP_GPMC_IRQ_BASE;
+ for (cs = 0; cs < GPMC_CS_NUM; cs++) {
+ set_irq_handler(irq, handle_simple_irq);
+ set_irq_flags(irq, IRQF_VALID);
+ irq++;
+ }
+
+ if (request_irq(INT_34XX_GPMC_IRQ,
+ gpmc_handle_irq, IRQF_SHARED, "gpmc", gpmc_base))
+ pr_err("gpmc: irq-%d could not claim: err %d\n",
+ INT_34XX_GPMC_IRQ, irq);
+}
+
+static irqreturn_t gpmc_handle_irq(int irq, void *dev)
+{
+ u8 cs;
+
+ if (irq != INT_34XX_GPMC_IRQ)
+ return IRQ_HANDLED;
+ /* check cs to invoke the irq */
+ cs = ((gpmc_read_reg(GPMC_PREFETCH_CONFIG1)) >> CS_NUM_SHIFT) & 0x7;
+ if (OMAP_GPMC_IRQ_BASE+cs <= OMAP_GPMC_IRQ_END)
+ generic_handle_irq(OMAP_GPMC_IRQ_BASE+cs);
+
+ return IRQ_HANDLED;
}
#ifdef CONFIG_ARCH_OMAP3
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index e66687b..0331ab0 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -30,7 +30,6 @@
#include <plat/sram.h>
#include <plat/sdrc.h>
-#include <plat/gpmc.h>
#include <plat/serial.h>
#include "clock2xxx.h"
@@ -408,8 +407,6 @@ void __init omap2_init_common_devices(struct omap_sdrc_params *sdrc_cs0,
omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
_omap2_init_reprogram_sdrc();
}
- gpmc_init();
-
omap_irq_base_init();
}
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h
index 85ded59..ffd2a24 100644
--- a/arch/arm/plat-omap/include/plat/gpmc.h
+++ b/arch/arm/plat-omap/include/plat/gpmc.h
@@ -41,6 +41,8 @@
#define GPMC_NAND_ADDRESS 0x0000000b
#define GPMC_NAND_DATA 0x0000000c
+#define GPMC_ENABLE_IRQ 0x0000000d
+
/* ECC commands */
#define GPMC_ECC_READ 0 /* Reset Hardware ECC for read */
#define GPMC_ECC_WRITE 1 /* Reset Hardware ECC for write */
@@ -78,6 +80,8 @@
#define WR_RD_PIN_MONITORING 0x00600000
#define GPMC_PREFETCH_STATUS_FIFO_CNT(val) ((val >> 24) & 0x7F)
#define GPMC_PREFETCH_STATUS_COUNT(val) (val & 0x00003fff)
+#define GPMC_IRQ_FIFOEVENTENABLE 0x01
+#define GPMC_IRQ_COUNT_EVENT 0x02
/*
* Note that all values in this struct are in nanoseconds except sync_clk
diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index 2910de9..1b91168 100644
--- a/arch/arm/plat-omap/include/plat/irqs.h
+++ b/arch/arm/plat-omap/include/plat/irqs.h
@@ -318,6 +318,7 @@
#define INT_34XX_PRCM_MPU_IRQ 11
#define INT_34XX_MCBSP1_IRQ 16
#define INT_34XX_MCBSP2_IRQ 17
+#define INT_34XX_GPMC_IRQ 20
#define INT_34XX_MCBSP3_IRQ 22
#define INT_34XX_MCBSP4_IRQ 23
#define INT_34XX_CAM_IRQ 24
@@ -411,7 +412,13 @@
#define TWL_IRQ_END TWL6030_IRQ_END
#endif
-#define NR_IRQS TWL_IRQ_END
+/* GPMC related */
+#define OMAP_GPMC_IRQ_BASE (TWL_IRQ_END)
+#define OMAP_GPMC_NR_IRQS 7
+#define OMAP_GPMC_IRQ_END (OMAP_GPMC_IRQ_BASE + OMAP_GPMC_NR_IRQS)
+
+
+#define NR_IRQS OMAP_GPMC_IRQ_END
#define OMAP_IRQ_BIT(irq) (1 << ((irq) % 32))
--
1.7.0.4
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