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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 14:54:55 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 14:54:55 -0800
commitb24174b0cbbe383c5bb6097aeb24480b8fd2d338 (patch)
tree2df02e72b7166dadb19b766435dbe7568d97e946 /arch/arm/mach-pxa
parent7ed214ac2095f561a94335ca672b6c42a1ea40ff (diff)
parentbe8fd292f9b1ed787a04cb4437f7faef16c4afef (diff)
Merge tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull non-critical ARM SoC bug fixes from Arnd Bergmann: "Bug fixes that did not make it into v3.8, mostly because they were not considered important enough, and in some cases because bugs only show up in combination with other patches destined for 3.9. This includes a few larger patches for GPIO on the Marvell PXA platform and a lot of Samsung specific bug fixes, as well as a series from Arnd to fix older build warnings." * tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits) ARM: SPEAr13xx: Enable CONFIG_ARCH_HAS_CPUFREQ ARM: imx: MACH_MX31ADS_WM1133_EV1 needs REGULATOR_WM8350 scripts/sortextable: silence script output ARM: s3c: i2c: add platform_device forward declaration ARM: mvebu: allow selecting mvebu without Armada XP ARM: pick Versatile by default for !MMU ARM: integrator: fix build with INTEGRATOR_AP off ARM: integrator/versatile: fix NOMMU warnings ARM: sa1100: don't warn about mach/ide.h ARM: shmobile: fix defconfig warning on CONFIG_USB ARM: w90x900: fix legacy assembly syntax ARM: samsung: fix assembly syntax for new gas ARM: disable virt_to_bus/virt_to_bus almost everywhere ARM: dts: Correct pin configuration of SD 4 for exynos4x12-pinctrl ARM: SAMSUNG: Silence empty switch warning in fimc-core.h ARM: SAMSUNG: Silence empty switch warning in sdhci.h ARM: msm: proc_comm_boot_wait should not be __init arm: vt8500: Update MAINTAINERS entry for arch-vt8500 ARM: integrator: ensure ap_syscon_base is initialised when !CONFIG_MMU ARM: S5PV210: Fix early uart output in fifo mode ...
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/include/mach/palmtreo.h5
-rw-r--r--arch/arm/mach-pxa/include/mach/smemc.h1
-rw-r--r--arch/arm/mach-pxa/palmtreo.c70
-rw-r--r--arch/arm/mach-pxa/smemc.c15
-rw-r--r--arch/arm/mach-pxa/spitz.c4
5 files changed, 80 insertions, 15 deletions
diff --git a/arch/arm/mach-pxa/include/mach/palmtreo.h b/arch/arm/mach-pxa/include/mach/palmtreo.h
index 2d3f14e3be2..714b6574393 100644
--- a/arch/arm/mach-pxa/include/mach/palmtreo.h
+++ b/arch/arm/mach-pxa/include/mach/palmtreo.h
@@ -38,13 +38,14 @@
#define GPIO_NR_TREO_LCD_POWER 25
/* Treo680 specific GPIOs */
-#ifdef CONFIG_MACH_TREO680
#define GPIO_NR_TREO680_SD_READONLY 33
#define GPIO_NR_TREO680_SD_POWER 42
#define GPIO_NR_TREO680_VIBRATE_EN 44
#define GPIO_NR_TREO680_KEYB_BL 24
#define GPIO_NR_TREO680_BT_EN 43
-#endif /* CONFIG_MACH_TREO680 */
+#define GPIO_NR_TREO680_LCD_POWER 77
+#define GPIO_NR_TREO680_LCD_EN 86
+#define GPIO_NR_TREO680_LCD_EN_N 25
/* Centro685 specific GPIOs */
#define GPIO_NR_CENTRO_SD_POWER 21
diff --git a/arch/arm/mach-pxa/include/mach/smemc.h b/arch/arm/mach-pxa/include/mach/smemc.h
index b7de471b273..b802f285fe0 100644
--- a/arch/arm/mach-pxa/include/mach/smemc.h
+++ b/arch/arm/mach-pxa/include/mach/smemc.h
@@ -37,6 +37,7 @@
#define CSADRCFG1 (SMEMC_VIRT + 0x84) /* Address Configuration Register for CS1 */
#define CSADRCFG2 (SMEMC_VIRT + 0x88) /* Address Configuration Register for CS2 */
#define CSADRCFG3 (SMEMC_VIRT + 0x8C) /* Address Configuration Register for CS3 */
+#define CSMSADRCFG (SMEMC_VIRT + 0xA0) /* Chip Select Configuration Register */
/*
* More handy macros for PCMCIA
diff --git a/arch/arm/mach-pxa/palmtreo.c b/arch/arm/mach-pxa/palmtreo.c
index 3f3c48f2f7c..577512845a6 100644
--- a/arch/arm/mach-pxa/palmtreo.c
+++ b/arch/arm/mach-pxa/palmtreo.c
@@ -98,9 +98,6 @@ static unsigned long treo_pin_config[] __initdata = {
GPIO96_KP_MKOUT_6,
GPIO93_KP_DKIN_0 | WAKEUP_ON_LEVEL_HIGH, /* Hotsync button */
- /* LCD */
- GPIOxx_LCD_TFT_16BPP,
-
/* Quick Capture Interface */
GPIO84_CIF_FV,
GPIO85_CIF_LV,
@@ -140,6 +137,12 @@ static unsigned long treo680_pin_config[] __initdata = {
/* MATRIX KEYPAD - different wake up source */
GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
GPIO99_KP_MKIN_5,
+
+ /* LCD... L_BIAS alt fn not configured on Treo680; is GPIO instead */
+ GPIOxx_LCD_16BPP,
+ GPIO74_LCD_FCLK,
+ GPIO75_LCD_LCLK,
+ GPIO76_LCD_PCLK,
};
#endif /* CONFIG_MACH_TREO680 */
@@ -155,6 +158,9 @@ static unsigned long centro685_pin_config[] __initdata = {
/* MATRIX KEYPAD - different wake up source */
GPIO100_KP_MKIN_0,
GPIO99_KP_MKIN_5 | WAKEUP_ON_LEVEL_HIGH,
+
+ /* LCD */
+ GPIOxx_LCD_TFT_16BPP,
};
#endif /* CONFIG_MACH_CENTRO */
@@ -328,7 +334,6 @@ static inline void palmtreo_uhc_init(void) {}
/******************************************************************************
* Vibra and LEDs
******************************************************************************/
-#ifdef CONFIG_MACH_TREO680
static struct gpio_led treo680_gpio_leds[] = {
{
.name = "treo680:vibra:vibra",
@@ -379,21 +384,17 @@ static struct gpio_led_platform_data centro_gpio_led_info = {
static struct platform_device palmtreo_leds = {
.name = "leds-gpio",
.id = -1,
- .dev = {
- .platform_data = &treo680_gpio_led_info,
- }
};
static void __init palmtreo_leds_init(void)
{
if (machine_is_centro())
palmtreo_leds.dev.platform_data = &centro_gpio_led_info;
+ else if (machine_is_treo680())
+ palmtreo_leds.dev.platform_data = &treo680_gpio_led_info;
platform_device_register(&palmtreo_leds);
}
-#else
-static inline void palmtreo_leds_init(void) {}
-#endif
/******************************************************************************
* Machine init
@@ -424,10 +425,59 @@ static void __init palmphone_common_init(void)
}
#ifdef CONFIG_MACH_TREO680
+void __init treo680_gpio_init(void)
+{
+ unsigned int gpio;
+
+ /* drive all three lcd gpios high initially */
+ const unsigned long lcd_flags = GPIOF_INIT_HIGH | GPIOF_DIR_OUT;
+
+ /*
+ * LCD GPIO initialization...
+ */
+
+ /*
+ * This is likely the power to the lcd. Toggling it low/high appears to
+ * turn the lcd off/on. Can be toggled after lcd is initialized without
+ * any apparent adverse effects to the lcd operation. Note that this
+ * gpio line is used by the lcd controller as the L_BIAS signal, but
+ * treo680 configures it as gpio.
+ */
+ gpio = GPIO_NR_TREO680_LCD_POWER;
+ if (gpio_request_one(gpio, lcd_flags, "LCD power") < 0)
+ goto fail;
+
+ /*
+ * These two are called "enables", for lack of a better understanding.
+ * If either of these are toggled after the lcd is initialized, the
+ * image becomes degraded. N.B. The IPL shipped with the treo
+ * configures GPIO_NR_TREO680_LCD_EN_N as output and drives it high. If
+ * the IPL is ever reprogrammed, this initialization may be need to be
+ * revisited.
+ */
+ gpio = GPIO_NR_TREO680_LCD_EN;
+ if (gpio_request_one(gpio, lcd_flags, "LCD enable") < 0)
+ goto fail;
+ gpio = GPIO_NR_TREO680_LCD_EN_N;
+ if (gpio_request_one(gpio, lcd_flags, "LCD enable_n") < 0)
+ goto fail;
+
+ /* driving this low turns LCD on */
+ gpio_set_value(GPIO_NR_TREO680_LCD_EN_N, 0);
+
+ return;
+ fail:
+ pr_err("gpio %d initialization failed\n", gpio);
+ gpio_free(GPIO_NR_TREO680_LCD_POWER);
+ gpio_free(GPIO_NR_TREO680_LCD_EN);
+ gpio_free(GPIO_NR_TREO680_LCD_EN_N);
+}
+
static void __init treo680_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(treo680_pin_config));
palmphone_common_init();
+ treo680_gpio_init();
palm27x_mmc_init(GPIO_NR_TREO_SD_DETECT_N, GPIO_NR_TREO680_SD_READONLY,
GPIO_NR_TREO680_SD_POWER, 0);
}
diff --git a/arch/arm/mach-pxa/smemc.c b/arch/arm/mach-pxa/smemc.c
index 79923058d10..f38aa890b2c 100644
--- a/arch/arm/mach-pxa/smemc.c
+++ b/arch/arm/mach-pxa/smemc.c
@@ -40,6 +40,8 @@ static void pxa3xx_smemc_resume(void)
__raw_writel(csadrcfg[1], CSADRCFG1);
__raw_writel(csadrcfg[2], CSADRCFG2);
__raw_writel(csadrcfg[3], CSADRCFG3);
+ /* CSMSADRCFG wakes up in its default state (0), so we need to set it */
+ __raw_writel(0x2, CSMSADRCFG);
}
static struct syscore_ops smemc_syscore_ops = {
@@ -49,8 +51,19 @@ static struct syscore_ops smemc_syscore_ops = {
static int __init smemc_init(void)
{
- if (cpu_is_pxa3xx())
+ if (cpu_is_pxa3xx()) {
+ /*
+ * The only documentation we have on the
+ * Chip Select Configuration Register (CSMSADRCFG) is that
+ * it must be programmed to 0x2.
+ * Moreover, in the bit definitions, the second bit
+ * (CSMSADRCFG[1]) is called "SETALWAYS".
+ * Other bits are reserved in this register.
+ */
+ __raw_writel(0x2, CSMSADRCFG);
+
register_syscore_ops(&smemc_syscore_ops);
+ }
return 0;
}
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 2073f0e6db0..7e2cb880daa 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -732,7 +732,7 @@ static inline void spitz_lcd_init(void) {}
#endif
/******************************************************************************
- * Framebuffer
+ * NAND Flash
******************************************************************************/
#if defined(CONFIG_MTD_NAND_SHARPSL) || defined(CONFIG_MTD_NAND_SHARPSL_MODULE)
static struct mtd_partition spitz_nand_partitions[] = {
@@ -858,7 +858,7 @@ static inline void spitz_nor_init(void) {}
#endif
/******************************************************************************
- * GPIO expander
+ * I2C devices
******************************************************************************/
#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
static struct pca953x_platform_data akita_pca953x_pdata = {