From 229fd8ffba57dfaea59078b9144371369ffdb0a3 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben@simtec.co.uk>
Date: Mon, 3 Aug 2009 17:26:57 +0100
Subject: [PATCH 1/3] ARM: S3C24XX: Add FIQ IRQ routing support
Add support for routing an IRQ from the normal ARM IRQ mechanism to the
FIQ input of the processor.
Note, also fix a bug where the init_FIQ() function has not been called
when CONFIG_FIQ is enabled.
Signed-off-by; Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
arch/arm/plat-s3c24xx/include/plat/fiq.h | 13 +++++++++
arch/arm/plat-s3c24xx/irq.c | 36 ++++++++++++++++++++++++
2 files changed, 49 insertions(+)
create mode 100644 arch/arm/plat-s3c24xx/include/plat/fiq.h
diff --git a/arch/arm/plat-s3c24xx/include/plat/fiq.h b/arch/arm/plat-s3c24xx/include/plat/fiq.h
new file mode 100644
index 000000000000..8521b8372c5f
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/include/plat/fiq.h
@@ -0,0 +1,13 @@
+/* linux/include/asm-arm/plat-s3c24xx/fiq.h
+ *
+ * Copyright (c) 2009 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Header file for S3C24XX CPU FIQ support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+extern int s3c24xx_set_fiq(unsigned int irq, bool on);
diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c
index 958737775ad2..d02f5f02045e 100644
--- a/arch/arm/plat-s3c24xx/irq.c
+++ b/arch/arm/plat-s3c24xx/irq.c
@@ -493,6 +493,38 @@ s3c_irq_demux_extint4t7(unsigned int irq,
}
}
+#ifdef CONFIG_FIQ
+/**
+ * s3c24xx_set_fiq - set the FIQ routing
+ * @irq: IRQ number to route to FIQ on processor.
+ * @on: Whether to route @irq to the FIQ, or to remove the FIQ routing.
+ *
+ * Change the state of the IRQ to FIQ routing depending on @irq and @on. If
+ * @on is true, the @irq is checked to see if it can be routed and the
+ * interrupt controller updated to route the IRQ. If @on is false, the FIQ
+ * routing is cleared, regardless of which @irq is specified.
+ */
+int s3c24xx_set_fiq(unsigned int irq, bool on)
+{
+ u32 intmod;
+ unsigned offs;
+
+ if (on) {
+ offs = irq - FIQ_START;
+ if (offs > 31)
+ return -EINVAL;
+
+ intmod = 1 << offs;
+ } else {
+ intmod = 0;
+ }
+
+ __raw_writel(intmod, S3C2410_INTMOD);
+ return 0;
+}
+#endif
+
+
/* s3c24xx_init_irq
*
* Initialise S3C2410 IRQ system
@@ -505,6 +537,10 @@ void __init s3c24xx_init_irq(void)
int irqno;
int i;
+#ifdef CONFIG_FIQ
+ init_FIQ();
+#endif
+
irqdbf("s3c2410_init_irq: clearing interrupt status flags\n");
/* first, clear all interrupts pending... */
From d91e9a7ab93e09e5a0fbed73f3a6a330f14620a4 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Wed, 5 Aug 2009 18:29:57 +0100
Subject: [PATCH 2/3] ARM: S3C24XX: Add platform device for AC97 controller
Move the definition of the "generic" IRQ in the process.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
arch/arm/mach-s3c2410/include/mach/irqs.h | 6 +++
arch/arm/plat-s3c/include/plat/devs.h | 1 +
arch/arm/plat-s3c24xx/devs.c | 50 +++++++++++++++++++++++
sound/soc/s3c24xx/s3c24xx-ac97.h | 6 ---
4 files changed, 57 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-s3c2410/include/mach/irqs.h b/arch/arm/mach-s3c2410/include/mach/irqs.h
index 2a2384ffa7b1..6c12c6312ad8 100644
--- a/arch/arm/mach-s3c2410/include/mach/irqs.h
+++ b/arch/arm/mach-s3c2410/include/mach/irqs.h
@@ -164,6 +164,12 @@
#define IRQ_S3CUART_TX3 IRQ_S3C2443_TX3
#define IRQ_S3CUART_ERR3 IRQ_S3C2443_ERR3
+#ifdef CONFIG_CPU_S3C2440
+#define IRQ_S3C244x_AC97 IRQ_S3C2440_AC97
+#else
+#define IRQ_S3C244x_AC97 IRQ_S3C2443_AC97
+#endif
+
/* Our FIQs are routable from IRQ_EINT0 to IRQ_ADCPARENT */
#define FIQ_START IRQ_EINT0
diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h
index 2e170827e0b0..2e6599411c28 100644
--- a/arch/arm/plat-s3c/include/plat/devs.h
+++ b/arch/arm/plat-s3c/include/plat/devs.h
@@ -56,5 +56,6 @@ extern struct platform_device s3c_device_usb_hsotg;
#ifdef CONFIG_CPU_S3C2440
extern struct platform_device s3c_device_camif;
+extern struct platform_device s3c_device_ac97;
#endif
diff --git a/arch/arm/plat-s3c24xx/devs.c b/arch/arm/plat-s3c24xx/devs.c
index 4eb378c89a39..4553ad6c7adc 100644
--- a/arch/arm/plat-s3c24xx/devs.c
+++ b/arch/arm/plat-s3c24xx/devs.c
@@ -26,6 +26,8 @@
#include <asm/mach/irq.h>
#include <mach/fb.h>
#include <mach/hardware.h>
+#include <mach/dma.h>
+#include <mach/irqs.h>
#include <asm/irq.h>
#include <plat/regs-serial.h>
@@ -473,4 +475,52 @@ struct platform_device s3c_device_camif = {
EXPORT_SYMBOL(s3c_device_camif);
+/* AC97 */
+
+static struct resource s3c_ac97_resource[] = {
+ [0] = {
+ .start = S3C2440_PA_AC97,
+ .end = S3C2440_PA_AC97 + S3C2440_SZ_AC97 -1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_S3C244x_AC97,
+ .end = IRQ_S3C244x_AC97,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .name = "PCM out",
+ .start = DMACH_PCM_OUT,
+ .end = DMACH_PCM_OUT,
+ .flags = IORESOURCE_DMA,
+ },
+ [3] = {
+ .name = "PCM in",
+ .start = DMACH_PCM_IN,
+ .end = DMACH_PCM_IN,
+ .flags = IORESOURCE_DMA,
+ },
+ [4] = {
+ .name = "Mic in",
+ .start = DMACH_MIC_IN,
+ .end = DMACH_MIC_IN,
+ .flags = IORESOURCE_DMA,
+ },
+};
+
+static u64 s3c_device_ac97_dmamask = 0xffffffffUL;
+
+struct platform_device s3c_device_ac97 = {
+ .name = "s3c-ac97",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(s3c_ac97_resource),
+ .resource = s3c_ac97_resource,
+ .dev = {
+ .dma_mask = &s3c_device_ac97_dmamask,
+ .coherent_dma_mask = 0xffffffffUL
+ }
+};
+
+EXPORT_SYMBOL(s3c_device_ac97);
+
#endif // CONFIG_CPU_S32440
diff --git a/sound/soc/s3c24xx/s3c24xx-ac97.h b/sound/soc/s3c24xx/s3c24xx-ac97.h
index a96dcadf28b4..e96f941a810b 100644
--- a/sound/soc/s3c24xx/s3c24xx-ac97.h
+++ b/sound/soc/s3c24xx/s3c24xx-ac97.h
@@ -20,12 +20,6 @@
#define AC_CMD_ADDR(x) (x << 16)
#define AC_CMD_DATA(x) (x & 0xffff)
-#ifdef CONFIG_CPU_S3C2440
-#define IRQ_S3C244x_AC97 IRQ_S3C2440_AC97
-#else
-#define IRQ_S3C244x_AC97 IRQ_S3C2443_AC97
-#endif
-
extern struct snd_soc_dai s3c2443_ac97_dai[];
#endif /*S3C24XXAC97_H_*/
From a2c195fdde20772a90ee98ce3523dcfbda49eee6 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben@simtec.co.uk>
Date: Mon, 3 Aug 2009 17:26:50 +0100
Subject: [PATCH 3/3] ARM: S3C24XX: Add SPI bus 1 on GPD8 through GPD10
Add configuration callback for SPI bus 1 on GPD[8..10] and ensure the
correct GPIO configuration register definitions in regs-gpio.h
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
.../arm/mach-s3c2410/include/mach/regs-gpio.h | 4 +-
arch/arm/mach-s3c2410/include/mach/spi.h | 3 ++
arch/arm/plat-s3c24xx/Kconfig | 6 +++
arch/arm/plat-s3c24xx/Makefile | 1 +
arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c | 38 +++++++++++++++++++
5 files changed, 51 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
diff --git a/arch/arm/mach-s3c2410/include/mach/regs-gpio.h b/arch/arm/mach-s3c2410/include/mach/regs-gpio.h
index b278d0c45ccf..f6e8eec879c8 100644
--- a/arch/arm/mach-s3c2410/include/mach/regs-gpio.h
+++ b/arch/arm/mach-s3c2410/include/mach/regs-gpio.h
@@ -328,13 +328,15 @@
#define S3C2410_GPD8_VD16 (0x02 << 16)
#define S3C2400_GPD8_TOUT3 (0x02 << 16)
+#define S3C2440_GPD8_SPIMISO1 (0x03 << 16)
#define S3C2410_GPD9_VD17 (0x02 << 18)
#define S3C2400_GPD9_TCLK0 (0x02 << 18)
-#define S3C2410_GPD9_MASK (0x03 << 18)
+#define S3C2440_GPD9_SPIMOSI1 (0x03 << 18)
#define S3C2410_GPD10_VD18 (0x02 << 20)
#define S3C2400_GPD10_nWAIT (0x02 << 20)
+#define S3C2440_GPD10_SPICLK1 (0x03 << 20)
#define S3C2410_GPD11_VD19 (0x02 << 22)
diff --git a/arch/arm/mach-s3c2410/include/mach/spi.h b/arch/arm/mach-s3c2410/include/mach/spi.h
index 1d300fb112b1..193b39d654ed 100644
--- a/arch/arm/mach-s3c2410/include/mach/spi.h
+++ b/arch/arm/mach-s3c2410/include/mach/spi.h
@@ -30,4 +30,7 @@ extern void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi,
extern void s3c24xx_spi_gpiocfg_bus1_gpg5_6_7(struct s3c2410_spi_info *spi,
int enable);
+extern void s3c24xx_spi_gpiocfg_bus1_gpd8_9_10(struct s3c2410_spi_info *spi,
+ int enable);
+
#endif /* __ASM_ARCH_SPI_H */
diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig
index 5b0bc914f58e..aaae456018b5 100644
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -105,6 +105,12 @@ config S3C24XX_SPI_BUS1_GPG5_GPG6_GPG7
SPI GPIO configuration code for BUS 1 when connected to
GPG5, GPG6 and GPG7.
+config S3C24XX_SPI_BUS1_GPD8_GPD9_GPD10
+ bool
+ help
+ SPI GPIO configuration code for BUS 1 when connected to
+ GPD8, GPD9 and GPD10.
+
# common code for s3c24xx based machines, such as the SMDKs.
config MACH_SMDK
diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
index 579a165c2827..59416796fb1d 100644
--- a/arch/arm/plat-s3c24xx/Makefile
+++ b/arch/arm/plat-s3c24xx/Makefile
@@ -41,6 +41,7 @@ obj-$(CONFIG_ARCH_S3C2410) += setup-i2c.o
obj-$(CONFIG_S3C24XX_SPI_BUS0_GPE11_GPE12_GPE13) += spi-bus0-gpe11_12_13.o
obj-$(CONFIG_S3C24XX_SPI_BUS1_GPG5_GPG6_GPG7) += spi-bus1-gpg5_6_7.o
+obj-$(CONFIG_S3C24XX_SPI_BUS1_GPD8_GPD9_GPD10) += spi-bus1-gpd8_9_10.o
# machine common support
diff --git a/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c b/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
new file mode 100644
index 000000000000..89fcf5308cf6
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
@@ -0,0 +1,38 @@
+/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpd8_9_10.c
+ *
+ * Copyright (c) 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C24XX SPI - gpio configuration for bus 1 on gpd8,9,10
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+*/
+
+#include <linux/kernel.h>
+#include <linux/gpio.h>
+
+#include <mach/spi.h>
+#include <mach/regs-gpio.h>
+
+void s3c24xx_spi_gpiocfg_bus1_gpd8_9_10(struct s3c2410_spi_info *spi,
+ int enable)
+{
+
+ printk(KERN_INFO "%s(%d)\n", __func__, enable);
+ if (enable) {
+ s3c2410_gpio_cfgpin(S3C2410_GPD(10), S3C2440_GPD10_SPICLK1);
+ s3c2410_gpio_cfgpin(S3C2410_GPD(9), S3C2440_GPD9_SPIMOSI1);
+ s3c2410_gpio_cfgpin(S3C2410_GPD(8), S3C2440_GPD8_SPIMISO1);
+ s3c2410_gpio_pullup(S3C2410_GPD(10), 0);
+ s3c2410_gpio_pullup(S3C2410_GPD(9), 0);
+ } else {
+ s3c2410_gpio_cfgpin(S3C2410_GPD(8), S3C2410_GPIO_INPUT);
+ s3c2410_gpio_cfgpin(S3C2410_GPD(9), S3C2410_GPIO_INPUT);
+ s3c2410_gpio_pullup(S3C2410_GPD(10), 1);
+ s3c2410_gpio_pullup(S3C2410_GPD(9), 1);
+ s3c2410_gpio_pullup(S3C2410_GPD(8), 1);
+ }
+}