diff options
author | Linus Torvalds | 2013-09-15 17:42:59 -0400 |
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committer | Linus Torvalds | 2013-09-15 17:42:59 -0400 |
commit | cd619e21ea468b02af9eeed75eae2307ec7de1cb (patch) | |
tree | 7d9febcbea96480d9b9f9ef291ad45ada3eac978 /drivers/platform/x86/samsung-q10.c | |
parent | 0375ec5899a37e80af7be8e813548df3292325ff (diff) | |
parent | 5c07eae979dfb596141c6885e5f5ecf1cd22cad3 (diff) |
Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
Pull x86 platform updates from Matthew Garrett:
"Nothing amazing here, almost entirely cleanups and minor bugfixes and
one bit of hardware enablement in the amilo-rfkill driver"
* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86:
platform/x86: panasonic-laptop: reuse module_acpi_driver
samsung-laptop: fix config build error
platform: x86: remove unnecessary platform_set_drvdata()
amilo-rfkill: Enable using amilo-rfkill with the FSC Amilo L1310.
wmi: parse_wdg() should return kernel error codes
hp_wmi: Fix unregister order in hp_wmi_rfkill_setup()
platform: replace strict_strto*() with kstrto*()
x86: irst: use module_acpi_driver to simplify the code
x86: smartconnect: use module_acpi_driver to simplify the code
platform samsung-q10: use ACPI instead of direct EC calls
thinkpad_acpi: add the ability setting TPACPI_LED_NONE by quirk
thinkpad_acpi: return -NODEV while operating uninitialized LEDs
Diffstat (limited to 'drivers/platform/x86/samsung-q10.c')
-rw-r--r-- | drivers/platform/x86/samsung-q10.c | 65 |
1 files changed, 21 insertions, 44 deletions
diff --git a/drivers/platform/x86/samsung-q10.c b/drivers/platform/x86/samsung-q10.c index 4430b8c1369d..cae7098e9b0d 100644 --- a/drivers/platform/x86/samsung-q10.c +++ b/drivers/platform/x86/samsung-q10.c @@ -14,16 +14,12 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/backlight.h> -#include <linux/i8042.h> #include <linux/dmi.h> +#include <acpi/acpi_drivers.h> -#define SAMSUNGQ10_BL_MAX_INTENSITY 255 -#define SAMSUNGQ10_BL_DEFAULT_INTENSITY 185 +#define SAMSUNGQ10_BL_MAX_INTENSITY 7 -#define SAMSUNGQ10_BL_8042_CMD 0xbe -#define SAMSUNGQ10_BL_8042_DATA { 0x89, 0x91 } - -static int samsungq10_bl_brightness; +static acpi_handle ec_handle; static bool force; module_param(force, bool, 0); @@ -33,21 +29,26 @@ MODULE_PARM_DESC(force, static int samsungq10_bl_set_intensity(struct backlight_device *bd) { - int brightness = bd->props.brightness; - unsigned char c[3] = SAMSUNGQ10_BL_8042_DATA; + acpi_status status; + int i; - c[2] = (unsigned char)brightness; - i8042_lock_chip(); - i8042_command(c, (0x30 << 8) | SAMSUNGQ10_BL_8042_CMD); - i8042_unlock_chip(); - samsungq10_bl_brightness = brightness; + for (i = 0; i < SAMSUNGQ10_BL_MAX_INTENSITY; i++) { + status = acpi_evaluate_object(ec_handle, "_Q63", NULL, NULL); + if (ACPI_FAILURE(status)) + return -EIO; + } + for (i = 0; i < bd->props.brightness; i++) { + status = acpi_evaluate_object(ec_handle, "_Q64", NULL, NULL); + if (ACPI_FAILURE(status)) + return -EIO; + } return 0; } static int samsungq10_bl_get_intensity(struct backlight_device *bd) { - return samsungq10_bl_brightness; + return bd->props.brightness; } static const struct backlight_ops samsungq10_bl_ops = { @@ -55,28 +56,6 @@ static const struct backlight_ops samsungq10_bl_ops = { .update_status = samsungq10_bl_set_intensity, }; -#ifdef CONFIG_PM_SLEEP -static int samsungq10_suspend(struct device *dev) -{ - return 0; -} - -static int samsungq10_resume(struct device *dev) -{ - - struct backlight_device *bd = dev_get_drvdata(dev); - - samsungq10_bl_set_intensity(bd); - return 0; -} -#else -#define samsungq10_suspend NULL -#define samsungq10_resume NULL -#endif - -static SIMPLE_DEV_PM_OPS(samsungq10_pm_ops, - samsungq10_suspend, samsungq10_resume); - static int samsungq10_probe(struct platform_device *pdev) { @@ -93,9 +72,6 @@ static int samsungq10_probe(struct platform_device *pdev) platform_set_drvdata(pdev, bd); - bd->props.brightness = SAMSUNGQ10_BL_DEFAULT_INTENSITY; - samsungq10_bl_set_intensity(bd); - return 0; } @@ -104,9 +80,6 @@ static int samsungq10_remove(struct platform_device *pdev) struct backlight_device *bd = platform_get_drvdata(pdev); - bd->props.brightness = SAMSUNGQ10_BL_DEFAULT_INTENSITY; - samsungq10_bl_set_intensity(bd); - backlight_device_unregister(bd); return 0; @@ -116,7 +89,6 @@ static struct platform_driver samsungq10_driver = { .driver = { .name = KBUILD_MODNAME, .owner = THIS_MODULE, - .pm = &samsungq10_pm_ops, }, .probe = samsungq10_probe, .remove = samsungq10_remove, @@ -172,6 +144,11 @@ static int __init samsungq10_init(void) if (!force && !dmi_check_system(samsungq10_dmi_table)) return -ENODEV; + ec_handle = ec_get_handle(); + + if (!ec_handle) + return -ENODEV; + samsungq10_device = platform_create_bundle(&samsungq10_driver, samsungq10_probe, NULL, 0, NULL, 0); |