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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-08 17:13:04 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-08 17:13:04 -0400
commitcf377ad7d42c566356d79049536d9cb37499cb77 (patch)
tree266371ff3a9462dcbaa9567e20c9a34722e3b32f /arch/arm/mach-clps711x
parent212fe84a6f215c39795a76517c1c02114d428681 (diff)
parentd8f0faa339b0beff6e055218e10b2982422db540 (diff)
Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Arnd Bergmann: "New and updated SoC support. Among the things new for this release are: - at91: Added support for the new SAMA5D4 SoC, following the earlier SAMA5D3 - bcm: Added support for BCM63XX family of DSL SoCs - hisi: Added support for HiP04 server-class SoC - meson: Initial support for the Amlogic Meson6 (aka 8726MX) platform - shmobile: added support for new r8a7794 (R-Car E2) automotive SoC Noteworthy changes to existing SoC support are: - imx: convert i.MX1 to device tree - omap: lots of power management work - omap: base support to enable moving to standard UART driver - shmobile: lots of progress for multiplatform support, still ongoing" * tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (171 commits) ARM: hisi: depend on ARCH_MULTI_V7 CNS3xxx: Fix debug UART. ARM: at91: fix nommu build regression ARM: meson: add basic support for MesonX SoCs ARM: meson: debug: add debug UART for earlyprintk support irq: Export handle_fasteoi_irq ARM: mediatek: Add earlyprintk support for mt6589 ARM: hisi: Fix platmcpm compilation when ARMv6 is selected ARM: debug: fix alphanumerical order on debug uarts ARM: at91: document Atmel SMART compatibles ARM: at91: add sama5d4 support to sama5_defconfig ARM: at91: dt: add device tree file for SAMA5D4ek board ARM: at91: dt: add device tree file for SAMA5D4 SoC ARM: at91: SAMA5D4 SoC detection code and low level routines ARM: at91: introduce basic SAMA5D4 support clk: at91: add a driver for the h32mx clock ARM: pxa3xx: provide specific platform_devices for all ssp ports ARM: pxa: ssp: provide platform_device_id for PXA3xx ARM: OMAP4+: Remove static iotable mappings for SRAM ARM: OMAP4+: Move SRAM data to DT ...
Diffstat (limited to 'arch/arm/mach-clps711x')
-rw-r--r--arch/arm/mach-clps711x/board-edb7211.c37
-rw-r--r--arch/arm/mach-clps711x/devices.c52
2 files changed, 73 insertions, 16 deletions
diff --git a/arch/arm/mach-clps711x/board-edb7211.c b/arch/arm/mach-clps711x/board-edb7211.c
index fdf54d40909a..f33979784f38 100644
--- a/arch/arm/mach-clps711x/board-edb7211.c
+++ b/arch/arm/mach-clps711x/board-edb7211.c
@@ -14,8 +14,9 @@
#include <linux/types.h>
#include <linux/i2c-gpio.h>
#include <linux/interrupt.h>
-#include <linux/backlight.h>
#include <linux/platform_device.h>
+#include <linux/pwm.h>
+#include <linux/pwm_backlight.h>
#include <linux/memblock.h>
#include <linux/mtd/physmap.h>
@@ -108,23 +109,23 @@ static struct plat_lcd_data edb7211_lcd_power_pdata = {
.set_power = edb7211_lcd_power_set,
};
-static void edb7211_lcd_backlight_set_intensity(int intensity)
-{
- gpio_set_value(EDB7211_LCDBL, !!intensity);
- clps_writel((clps_readl(PMPCON) & 0xf0ff) | (intensity << 8), PMPCON);
-}
+static struct pwm_lookup edb7211_pwm_lookup[] = {
+ PWM_LOOKUP("clps711x-pwm", 0, "pwm-backlight.0", NULL,
+ 0, PWM_POLARITY_NORMAL),
+};
-static struct generic_bl_info edb7211_lcd_backlight_pdata = {
- .name = "lcd-backlight.0",
- .default_intensity = 0x01,
- .max_intensity = 0x0f,
- .set_bl_intensity = edb7211_lcd_backlight_set_intensity,
+static struct platform_pwm_backlight_data pwm_bl_pdata = {
+ .dft_brightness = 0x01,
+ .max_brightness = 0x0f,
+ .enable_gpio = EDB7211_LCDBL,
};
+static struct resource clps711x_pwm_res =
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + PMPCON, SZ_4);
+
static struct gpio edb7211_gpios[] __initconst = {
{ EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW, "LCD DC-DC" },
{ EDB7211_LCDEN, GPIOF_OUT_INIT_LOW, "LCD POWER" },
- { EDB7211_LCDBL, GPIOF_OUT_INIT_LOW, "LCD BACKLIGHT" },
};
/* Reserve screen memory region at the start of main system memory. */
@@ -153,12 +154,18 @@ static void __init edb7211_init_late(void)
gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
platform_device_register(&edb7211_flash_pdev);
+
platform_device_register_data(NULL, "platform-lcd", 0,
&edb7211_lcd_power_pdata,
sizeof(edb7211_lcd_power_pdata));
- platform_device_register_data(NULL, "generic-bl", 0,
- &edb7211_lcd_backlight_pdata,
- sizeof(edb7211_lcd_backlight_pdata));
+
+ platform_device_register_simple("clps711x-pwm", PLATFORM_DEVID_NONE,
+ &clps711x_pwm_res, 1);
+ pwm_add_table(edb7211_pwm_lookup, ARRAY_SIZE(edb7211_pwm_lookup));
+
+ platform_device_register_data(&platform_bus, "pwm-backlight", 0,
+ &pwm_bl_pdata, sizeof(pwm_bl_pdata));
+
platform_device_register_simple("video-clps711x", 0, NULL, 0);
platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
ARRAY_SIZE(edb7211_cs8900_resource));
diff --git a/arch/arm/mach-clps711x/devices.c b/arch/arm/mach-clps711x/devices.c
index 0c689d3a6710..77a9617c216d 100644
--- a/arch/arm/mach-clps711x/devices.c
+++ b/arch/arm/mach-clps711x/devices.c
@@ -1,7 +1,7 @@
/*
* CLPS711X common devices definitions
*
- * Author: Alexander Shiyan <shc_work@mail.ru>, 2013
+ * Author: Alexander Shiyan <shc_work@mail.ru>, 2013-2014
*
* 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
@@ -9,8 +9,15 @@
* (at your option) any later version.
*/
+#include <linux/io.h>
+#include <linux/of_fdt.h>
#include <linux/platform_device.h>
+#include <linux/random.h>
#include <linux/sizes.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+
+#include <asm/system_info.h>
#include <mach/hardware.h>
@@ -90,10 +97,53 @@ static void __init clps711x_add_uart(void)
ARRAY_SIZE(clps711x_uart2_res));
};
+static void __init clps711x_soc_init(void)
+{
+ struct soc_device_attribute *soc_dev_attr;
+ struct soc_device *soc_dev;
+ void __iomem *base;
+ u32 id[5];
+
+ base = ioremap(CLPS711X_PHYS_BASE, SZ_32K);
+ if (!base)
+ return;
+
+ id[0] = readl(base + UNIQID);
+ id[1] = readl(base + RANDID0);
+ id[2] = readl(base + RANDID1);
+ id[3] = readl(base + RANDID2);
+ id[4] = readl(base + RANDID3);
+ system_rev = SYSFLG1_VERID(readl(base + SYSFLG1));
+
+ add_device_randomness(id, sizeof(id));
+
+ system_serial_low = id[0];
+
+ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ if (!soc_dev_attr)
+ goto out_unmap;
+
+ soc_dev_attr->machine = of_flat_dt_get_machine_name();
+ soc_dev_attr->family = "Cirrus Logic CLPS711X";
+ soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", system_rev);
+ soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%08x", id[0]);
+
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR(soc_dev)) {
+ kfree(soc_dev_attr->revision);
+ kfree(soc_dev_attr->soc_id);
+ kfree(soc_dev_attr);
+ }
+
+out_unmap:
+ iounmap(base);
+}
+
void __init clps711x_devices_init(void)
{
clps711x_add_cpuidle();
clps711x_add_gpio();
clps711x_add_syscon();
clps711x_add_uart();
+ clps711x_soc_init();
}