These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

16 files changed, 188 insertions, 20 deletions

diff --git a/kernel/arch/arm/mach-s3c24xx/Kconfig b/kernel/arch/arm/mach-s3c24xx/Kconfig
index 23bec3a85..ef68ecb27 100644
--- a/kernel/arch/arm/mach-s3c24xx/Kconfig
+++ b/kernel/arch/arm/mach-s3c24xx/Kconfig
@@ -124,6 +124,11 @@ config S3C24XX_PLL
 	  This also means that the PLL tables for the selected CPU(s) will
 	  be built which may increase the size of the kernel image.
 
+config S3C_SETUP_CAMIF
+	bool
+	help
+	  Compile in common setup code for S3C CAMIF devices
+
 # cpu frequency items common between s3c2410 and s3c2440/s3c2442
 
 config S3C2410_IOTIMING
diff --git a/kernel/arch/arm/mach-s3c24xx/Makefile b/kernel/arch/arm/mach-s3c24xx/Makefile
index 05920c8a5..8ac2f58a3 100644
--- a/kernel/arch/arm/mach-s3c24xx/Makefile
+++ b/kernel/arch/arm/mach-s3c24xx/Makefile
@@ -99,3 +99,4 @@ obj-$(CONFIG_S3C2416_SETUP_SDHCI_GPIO)	+= setup-sdhci-gpio.o
 obj-$(CONFIG_S3C2443_SETUP_SPI)		+= setup-spi.o
 obj-$(CONFIG_ARCH_S3C24XX)		+= setup-i2c.o
 obj-$(CONFIG_S3C24XX_SETUP_TS)		+= setup-ts.o
+obj-$(CONFIG_S3C_SETUP_CAMIF)		+= setup-camif.o
diff --git a/kernel/arch/arm/mach-s3c24xx/bast-irq.c b/kernel/arch/arm/mach-s3c24xx/bast-irq.c
index cb1b79195..2bb08961e 100644
--- a/kernel/arch/arm/mach-s3c24xx/bast-irq.c
+++ b/kernel/arch/arm/mach-s3c24xx/bast-irq.c
@@ -100,9 +100,7 @@ static struct irq_chip  bast_pc104_chip = {
 	.irq_ack	= bast_pc104_maskack
 };
 
-static void
-bast_irq_pc104_demux(unsigned int irq,
-		     struct irq_desc *desc)
+static void bast_irq_pc104_demux(struct irq_desc *desc)
 {
 	unsigned int stat;
 	unsigned int irqno;
@@ -147,7 +145,7 @@ static __init int bast_irq_init(void)
 
 			irq_set_chip_and_handler(irqno, &bast_pc104_chip,
 						 handle_level_irq);
-			set_irq_flags(irqno, IRQF_VALID);
+			irq_clear_status_flags(irqno, IRQ_NOREQUEST);
 		}
 	}
 
diff --git a/kernel/arch/arm/mach-s3c24xx/fb-core.h b/kernel/arch/arm/mach-s3c24xx/fb-core.h
new file mode 100644
index 000000000..103bdbadd
--- /dev/null
+++ b/kernel/arch/arm/mach-s3c24xx/fb-core.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010 Samsung Electronics Co., Ltd.
+ *	Pawel Osciak <p.osciak@samsung.com>
+ *
+ * Samsung framebuffer driver core functions
+ *
+ * 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.
+ */
+#ifndef __ASM_PLAT_FB_CORE_H
+#define __ASM_PLAT_FB_CORE_H __FILE__
+
+/*
+ * These functions are only for use with the core support code, such as
+ * the CPU-specific initialization code.
+ */
+
+/* Re-define device name depending on support. */
+static inline void s3c_fb_setname(char *name)
+{
+#ifdef CONFIG_S3C_DEV_FB
+	s3c_device_fb.name = name;
+#endif
+}
+
+#endif /* __ASM_PLAT_FB_CORE_H */
diff --git a/kernel/arch/arm/mach-s3c24xx/mach-h1940.c b/kernel/arch/arm/mach-s3c24xx/mach-h1940.c
index d40d4f524..9f54300df 100644
--- a/kernel/arch/arm/mach-s3c24xx/mach-h1940.c
+++ b/kernel/arch/arm/mach-s3c24xx/mach-h1940.c
@@ -25,6 +25,7 @@
 #include <linux/gpio.h>
 #include <linux/input.h>
 #include <linux/gpio_keys.h>
+#include <linux/pwm.h>
 #include <linux/pwm_backlight.h>
 #include <linux/i2c.h>
 #include <linux/leds.h>
@@ -469,6 +470,11 @@ static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 	.ocr_avail     = MMC_VDD_32_33,
 };
 
+static struct pwm_lookup h1940_pwm_lookup[] = {
+	PWM_LOOKUP("samsung-pwm", 0, "pwm-backlight", NULL, 36296,
+		   PWM_POLARITY_NORMAL),
+};
+
 static int h1940_backlight_init(struct device *dev)
 {
 	gpio_request(S3C2410_GPB(0), "Backlight");
@@ -503,11 +509,8 @@ static void h1940_backlight_exit(struct device *dev)
 
 
 static struct platform_pwm_backlight_data backlight_data = {
-	.pwm_id         = 0,
 	.max_brightness = 100,
 	.dft_brightness = 50,
-	/* tcnt = 0x31 */
-	.pwm_period_ns  = 36296,
 	.enable_gpio    = -1,
 	.init           = h1940_backlight_init,
 	.notify		= h1940_backlight_notify,
@@ -725,6 +728,7 @@ static void __init h1940_init(void)
 	gpio_request(H1940_LATCH_SD_POWER, "SD power");
 	gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 
+	pwm_add_table(h1940_pwm_lookup, ARRAY_SIZE(h1940_pwm_lookup));
 	platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 
 	gpio_request(S3C2410_GPA(1), "Red LED blink");
diff --git a/kernel/arch/arm/mach-s3c24xx/mach-rx1950.c b/kernel/arch/arm/mach-s3c24xx/mach-rx1950.c
index 1d35ff375..774c982a7 100644
--- a/kernel/arch/arm/mach-s3c24xx/mach-rx1950.c
+++ b/kernel/arch/arm/mach-s3c24xx/mach-rx1950.c
@@ -375,6 +375,11 @@ static struct s3c2410fb_mach_info rx1950_lcd_cfg = {
 
 };
 
+static struct pwm_lookup rx1950_pwm_lookup[] = {
+	PWM_LOOKUP("samsung-pwm", 0, "pwm-backlight.0", NULL, 48000,
+		   PWM_POLARITY_NORMAL),
+};
+
 static struct pwm_device *lcd_pwm;
 
 static void rx1950_lcd_power(int enable)
@@ -520,10 +525,8 @@ static int rx1950_backlight_notify(struct device *dev, int brightness)
 }
 
 static struct platform_pwm_backlight_data rx1950_backlight_data = {
-	.pwm_id = 0,
 	.max_brightness = 24,
 	.dft_brightness = 4,
-	.pwm_period_ns = 48000,
 	.enable_gpio = -1,
 	.init = rx1950_backlight_init,
 	.notify = rx1950_backlight_notify,
@@ -792,6 +795,7 @@ static void __init rx1950_init_machine(void)
 	gpio_direction_output(S3C2410_GPA(4), 0);
 	gpio_direction_output(S3C2410_GPJ(6), 0);
 
+	pwm_add_table(rx1950_pwm_lookup, ARRAY_SIZE(rx1950_pwm_lookup));
 	platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
 
 	i2c_register_board_info(0, rx1950_i2c_devices,
diff --git a/kernel/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c b/kernel/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c
index f886478b8..5f028ff84 100644
--- a/kernel/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c
+++ b/kernel/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c
@@ -39,7 +39,7 @@ static void __init s3c2416_dt_machine_init(void)
 	s3c_pm_init();
 }
 
-static char const *s3c2416_dt_compat[] __initdata = {
+static const char *const s3c2416_dt_compat[] __initconst = {
 	"samsung,s3c2416",
 	"samsung,s3c2450",
 	NULL
diff --git a/kernel/arch/arm/mach-s3c24xx/nand-core.h b/kernel/arch/arm/mach-s3c24xx/nand-core.h
new file mode 100644
index 000000000..7e811fe1c
--- /dev/null
+++ b/kernel/arch/arm/mach-s3c24xx/nand-core.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S3C -  Nand Controller core functions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_NAND_CORE_H
+#define __ASM_ARCH_NAND_CORE_H __FILE__
+
+/* These functions are only for use with the core support code, such as
+ * the cpu specific initialisation code
+ */
+
+/* re-define device name depending on support. */
+static inline void s3c_nand_setname(char *name)
+{
+#ifdef CONFIG_S3C_DEV_NAND
+	s3c_device_nand.name = name;
+#endif
+}
+
+#endif /* __ASM_ARCH_NAND_CORE_H */
diff --git a/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c b/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
index a19460e6e..b355fca6c 100644
--- a/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
+++ b/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
@@ -20,7 +20,7 @@
 #include <plat/cpu.h>
 #include <plat/cpu-freq-core.h>
 
-static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
+static struct cpufreq_frequency_table s3c2440_plls_12[] = {
 	{ .frequency = 75000000,	.driver_data = PLLVAL(0x75, 3, 3),  }, 	/* FVco 600.000000 */
 	{ .frequency = 80000000,	.driver_data = PLLVAL(0x98, 4, 3),  }, 	/* FVco 640.000000 */
 	{ .frequency = 90000000,	.driver_data = PLLVAL(0x70, 2, 3),  }, 	/* FVco 720.000000 */
diff --git a/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c b/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c
index 1191b2905..be9a248b5 100644
--- a/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c
+++ b/kernel/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c
@@ -20,7 +20,7 @@
 #include <plat/cpu.h>
 #include <plat/cpu-freq-core.h>
 
-static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = {
+static struct cpufreq_frequency_table s3c2440_plls_169344[] = {
 	{ .frequency = 78019200,	.driver_data = PLLVAL(121, 5, 3), 	}, 	/* FVco 624.153600 */
 	{ .frequency = 84067200,	.driver_data = PLLVAL(131, 5, 3), 	}, 	/* FVco 672.537600 */
 	{ .frequency = 90115200,	.driver_data = PLLVAL(141, 5, 3), 	}, 	/* FVco 720.921600 */
diff --git a/kernel/arch/arm/mach-s3c24xx/s3c2412.c b/kernel/arch/arm/mach-s3c24xx/s3c2412.c
index 64a13605c..fb5ee8d38 100644
--- a/kernel/arch/arm/mach-s3c24xx/s3c2412.c
+++ b/kernel/arch/arm/mach-s3c24xx/s3c2412.c
@@ -40,11 +40,11 @@
 #include <plat/cpu.h>
 #include <plat/cpu-freq.h>
 #include <plat/devs.h>
-#include <plat/nand-core.h>
 #include <plat/pm.h>
 #include <plat/regs-spi.h>
 
 #include "common.h"
+#include "nand-core.h"
 #include "regs-dsc.h"
 #include "s3c2412-power.h"
 
diff --git a/kernel/arch/arm/mach-s3c24xx/s3c2416.c b/kernel/arch/arm/mach-s3c24xx/s3c2416.c
index 3f8ca2a3e..621b8648a 100644
--- a/kernel/arch/arm/mach-s3c24xx/s3c2416.c
+++ b/kernel/arch/arm/mach-s3c24xx/s3c2416.c
@@ -59,12 +59,12 @@
 #include <plat/pm.h>
 
 #include <plat/iic-core.h>
-#include <plat/fb-core.h>
-#include <plat/nand-core.h>
 #include <plat/adc-core.h>
-#include <plat/spi-core.h>
 
 #include "common.h"
+#include "fb-core.h"
+#include "nand-core.h"
+#include "spi-core.h"
 
 static struct map_desc s3c2416_iodesc[] __initdata = {
 	IODESC_ENT(WATCHDOG),
diff --git a/kernel/arch/arm/mach-s3c24xx/s3c2443.c b/kernel/arch/arm/mach-s3c24xx/s3c2443.c
index 87b6b89d8..b559d378c 100644
--- a/kernel/arch/arm/mach-s3c24xx/s3c2443.c
+++ b/kernel/arch/arm/mach-s3c24xx/s3c2443.c
@@ -41,10 +41,11 @@
 #include <plat/gpio-cfg-helpers.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
-#include <plat/fb-core.h>
-#include <plat/nand-core.h>
 #include <plat/adc-core.h>
-#include <plat/spi-core.h>
+
+#include "fb-core.h"
+#include "nand-core.h"
+#include "spi-core.h"
 
 static struct map_desc s3c2443_iodesc[] __initdata = {
 	IODESC_ENT(WATCHDOG),
diff --git a/kernel/arch/arm/mach-s3c24xx/s3c244x.c b/kernel/arch/arm/mach-s3c24xx/s3c244x.c
index b14119585..31fd27326 100644
--- a/kernel/arch/arm/mach-s3c24xx/s3c244x.c
+++ b/kernel/arch/arm/mach-s3c24xx/s3c244x.c
@@ -41,9 +41,9 @@
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/pm.h>
-#include <plat/nand-core.h>
 
 #include "common.h"
+#include "nand-core.h"
 #include "regs-dsc.h"
 
 static struct map_desc s3c244x_iodesc[] __initdata = {
diff --git a/kernel/arch/arm/mach-s3c24xx/setup-camif.c b/kernel/arch/arm/mach-s3c24xx/setup-camif.c
new file mode 100644
index 000000000..72d8edb89
--- /dev/null
+++ b/kernel/arch/arm/mach-s3c24xx/setup-camif.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
+ *
+ * Helper functions for S3C24XX/S3C64XX SoC series CAMIF driver
+ *
+ * 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.
+ */
+
+#include <linux/gpio.h>
+#include <plat/gpio-cfg.h>
+#include <mach/gpio-samsung.h>
+
+/* Number of camera port pins, without FIELD */
+#define S3C_CAMIF_NUM_GPIOS	13
+
+/* Default camera port configuration helpers. */
+
+static void camif_get_gpios(int *gpio_start, int *gpio_reset)
+{
+#ifdef CONFIG_ARCH_S3C24XX
+	*gpio_start = S3C2410_GPJ(0);
+	*gpio_reset = S3C2410_GPJ(12);
+#else
+	/* s3c64xx */
+	*gpio_start = S3C64XX_GPF(0);
+	*gpio_reset = S3C64XX_GPF(3);
+#endif
+}
+
+int s3c_camif_gpio_get(void)
+{
+	int gpio_start, gpio_reset;
+	int ret, i;
+
+	camif_get_gpios(&gpio_start, &gpio_reset);
+
+	for (i = 0; i < S3C_CAMIF_NUM_GPIOS; i++) {
+		int gpio = gpio_start + i;
+
+		if (gpio == gpio_reset)
+			continue;
+
+		ret = gpio_request(gpio, "camif");
+		if (!ret)
+			ret = s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
+		if (ret) {
+			pr_err("failed to configure GPIO %d\n", gpio);
+			for (--i; i >= 0; i--)
+				gpio_free(gpio--);
+			return ret;
+		}
+		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+	}
+
+	return 0;
+}
+
+void s3c_camif_gpio_put(void)
+{
+	int i, gpio_start, gpio_reset;
+
+	camif_get_gpios(&gpio_start, &gpio_reset);
+
+	for (i = 0; i < S3C_CAMIF_NUM_GPIOS; i++) {
+		int gpio = gpio_start + i;
+		if (gpio != gpio_reset)
+			gpio_free(gpio);
+	}
+}
diff --git a/kernel/arch/arm/mach-s3c24xx/spi-core.h b/kernel/arch/arm/mach-s3c24xx/spi-core.h
new file mode 100644
index 000000000..0b9428ab3
--- /dev/null
+++ b/kernel/arch/arm/mach-s3c24xx/spi-core.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2012 Heiko Stuebner <heiko@sntech.de>
+ *
+ * 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.
+ */
+
+#ifndef __PLAT_S3C_SPI_CORE_H
+#define __PLAT_S3C_SPI_CORE_H
+
+/* These functions are only for use with the core support code, such as
+ * the cpu specific initialisation code
+ */
+
+/* re-define device name depending on support. */
+static inline void s3c64xx_spi_setname(char *name)
+{
+#ifdef CONFIG_S3C64XX_DEV_SPI0
+	s3c64xx_device_spi0.name = name;
+#endif
+#ifdef CONFIG_S3C64XX_DEV_SPI1
+	s3c64xx_device_spi1.name = name;
+#endif
+#ifdef CONFIG_S3C64XX_DEV_SPI2
+	s3c64xx_device_spi2.name = name;
+#endif
+}
+
+#endif /* __PLAT_S3C_SPI_CORE_H */