[PATCH v7 3/7] omap: gpmc: enable irq mode in gpmc
Sukumar Ghorai
s-ghorai at ti.com
Wed Dec 29 08:32:22 EST 2010
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-zoom2.c | 2 +
arch/arm/mach-omap2/board-zoom3.c | 2 +
arch/arm/mach-omap2/gpmc.c | 39 ++++++++++++++++++++++++++-
arch/arm/mach-omap2/io.c | 2 -
arch/arm/plat-omap/include/plat/gpmc.h | 4 +++
arch/arm/plat-omap/include/plat/irqs.h | 9 +++++-
27 files changed, 81 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index b527f8d..11c89dc 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -145,6 +145,7 @@ static void __init omap_2430sdp_init_irq(void)
omap_board_config_size = ARRAY_SIZE(sdp2430_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index 470872e..690fecd 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -328,6 +328,7 @@ static void __init omap_3430sdp_init_irq(void)
omap3_pm_init_cpuidle(omap3_cpuidle_params_table);
omap2_init_common_hw(hyb18m512160af6_sdrc_params, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-3630sdp.c b/arch/arm/mach-omap2/board-3630sdp.c
index 0a74141..46c1755 100644
--- a/arch/arm/mach-omap2/board-3630sdp.c
+++ b/arch/arm/mach-omap2/board-3630sdp.c
@@ -77,6 +77,7 @@ static void __init omap_sdp_init_irq(void)
omap2_init_common_hw(h8mbx00u0mer0em_sdrc_params,
h8mbx00u0mer0em_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index df5a425..8d15604 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -34,6 +34,7 @@
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/mmc.h>
+#include <plat/gpmc.h>
#include "hsmmc.h"
#include "timer-gp.h"
@@ -222,6 +223,7 @@ static void __init omap_4430sdp_init_irq(void)
omap2_gp_clockevent_set_gptimer(1);
#endif
gic_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c
index 0739950..460e3d1 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 "mux.h"
#include "control.h"
@@ -392,6 +393,7 @@ static void __init am3517_evm_init_irq(void)
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-apollon.c b/arch/arm/mach-omap2/board-apollon.c
index 2c6db1a..8264e7a 100644
--- a/arch/arm/mach-omap2/board-apollon.c
+++ b/arch/arm/mach-omap2/board-apollon.c
@@ -280,6 +280,7 @@ static void __init omap_apollon_init_irq(void)
omap_board_config_size = ARRAY_SIZE(apollon_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
apollon_init_smc91x();
}
diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
index 63f764e..7c9a834 100644
--- a/arch/arm/mach-omap2/board-cm-t35.c
+++ b/arch/arm/mach-omap2/board-cm-t35.c
@@ -686,6 +686,7 @@ static void __init cm_t35_init_irq(void)
omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index 53ac762..f82d3b7 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
@@ -447,6 +447,7 @@ static void __init devkit8000_init_irq(void)
omap2_init_common_hw(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 b1c2c9a..0b0d2cb 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[] = {
};
@@ -39,6 +40,7 @@ static void __init omap_generic_init_irq(void)
omap_board_config_size = ARRAY_SIZE(generic_config);
omap2_init_common_hw(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 929993b..41b04c4 100644
--- a/arch/arm/mach-omap2/board-h4.c
+++ b/arch/arm/mach-omap2/board-h4.c
@@ -293,6 +293,7 @@ static void __init omap_h4_init_irq(void)
omap_board_config_size = ARRAY_SIZE(h4_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
h4_init_flash();
}
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 5e035a5..c4de273 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -497,6 +497,7 @@ static void __init igep2_init_irq(void)
omap_board_config_size = ARRAY_SIZE(igep2_config);
omap2_init_common_hw(m65kxxxxam_sdrc_params, m65kxxxxam_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index b088b1d..489f40d 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -294,6 +294,7 @@ static void __init omap_ldp_init_irq(void)
omap_board_config_size = ARRAY_SIZE(ldp_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
ldp_init_smsc911x();
}
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index e823c70..4f7c714 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"
@@ -641,6 +642,7 @@ static void __init n8x0_init_irq(void)
{
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 14f4224..a83c3f3 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -487,6 +487,7 @@ static void __init omap3_beagle_init_irq(void)
omap2_init_common_hw(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 b04365c..21cc9e5 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 "mux.h"
#include "sdram-micron-mt46h32m32lf-6.h"
@@ -625,6 +626,7 @@ static void __init omap3_evm_init_irq(void)
omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
omap2_init_common_hw(mt46h32m32lf6_sdrc_params, NULL);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 89ed1be..e095f1d 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"
@@ -639,6 +640,7 @@ static void __init omap3pandora_init_irq(void)
omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-omap3stalker.c b/arch/arm/mach-omap2/board-omap3stalker.c
index f252721..c07ba77 100644
--- a/arch/arm/mach-omap2/board-omap3stalker.c
+++ b/arch/arm/mach-omap2/board-omap3stalker.c
@@ -586,6 +586,7 @@ static void __init omap3_stalker_init_irq(void)
omap_board_config_size = ARRAY_SIZE(omap3_stalker_config);
omap2_init_common_hw(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 41104bb..d549763 100644
--- a/arch/arm/mach-omap2/board-omap3touchbook.c
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -425,6 +425,7 @@ static void __init omap3_touchbook_init_irq(void)
omap2_init_common_hw(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 1ecd0a6..a03a021 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -36,6 +36,7 @@
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/mmc.h>
+#include <plat/gpmc.h>
#include "timer-gp.h"
#include "hsmmc.h"
@@ -78,6 +79,7 @@ static void __init omap4_panda_init_irq(void)
{
omap2_init_common_hw(NULL, NULL);
gic_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 7053bc0..c5fe2b0 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -416,6 +416,7 @@ static void __init overo_init_irq(void)
omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c
index 36f2cf4..3be8729 100644
--- a/arch/arm/mach-omap2/board-rx51.c
+++ b/arch/arm/mach-omap2/board-rx51.c
@@ -107,6 +107,7 @@ static void __init rx51_init_irq(void)
omap3_pm_init_cpuidle(rx51_cpuidle_params);
sdrc_params = rx51_get_sdram_timings();
omap2_init_common_hw(sdrc_params, sdrc_params);
+ gpmc_init();
omap_init_irq();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
index 994d286..b77802b 100644
--- a/arch/arm/mach-omap2/board-zoom2.c
+++ b/arch/arm/mach-omap2/board-zoom2.c
@@ -22,6 +22,7 @@
#include <plat/common.h>
#include <plat/board.h>
+#include <plat/gpmc.h>
#include <mach/board-zoom.h>
@@ -34,6 +35,7 @@ static void __init omap_zoom2_init_irq(void)
omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/board-zoom3.c b/arch/arm/mach-omap2/board-zoom3.c
index 0c9c15e..d56024f 100644
--- a/arch/arm/mach-omap2/board-zoom3.c
+++ b/arch/arm/mach-omap2/board-zoom3.c
@@ -22,6 +22,7 @@
#include <plat/common.h>
#include <plat/board.h>
#include <plat/usb.h>
+#include <plat/gpmc.h>
#include "board-flash.h"
#include "mux.h"
@@ -78,6 +79,7 @@ static void __init omap_zoom_init_irq(void)
omap2_init_common_hw(h8mbx00u0mer0em_sdrc_params,
h8mbx00u0mer0em_sdrc_params);
omap_init_irq();
+ gpmc_init();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index f46933b..cfaf357 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);
@@ -487,6 +490,10 @@ 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;
@@ -670,7 +677,8 @@ 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()) {
@@ -713,6 +721,33 @@ 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))
+ printk(KERN_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 a1939b1..3e67a67 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"
@@ -351,5 +350,4 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
_omap2_init_reprogram_sdrc();
}
- gpmc_init();
}
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h
index 9fd99b9..054e704 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, while
diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index 65e20a6..b90b9ef 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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