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Commit 014fc8fb authored by Mattia Dongili's avatar Mattia Dongili Committed by Matthew Garrett
Browse files

sony-laptop: add lid backlight support for handle 0x143 



Signed-off-by: default avatarMattia Dongili <malattia@linux.it>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 15aa5c75

drivers/platform/x86/sony-laptop.c

+24 −3
Original line number Diff line number Diff line
@@ -1010,6 +1010,7 @@ static ssize_t sony_nc_sysfs_store(struct device *dev, 
struct sony_backlight_props {

	struct backlight_device *dev;

	int			handle;

	int			cmd_base;

	u8			offset;

	u8			maxlvl;

};
@@ -1037,7 +1038,7 @@ static int sony_nc_get_brightness_ng(struct backlight_device *bd) 
	struct sony_backlight_props *sdev =

		(struct sony_backlight_props *)bl_get_data(bd);



	sony_call_snc_handle(sdev->handle, 0x0200, &result);

	sony_call_snc_handle(sdev->handle, sdev->cmd_base + 0x100, &result);



	return (result & 0xff) - sdev->offset;

}
@@ -1049,7 +1050,8 @@ static int sony_nc_update_status_ng(struct backlight_device *bd) 
		(struct sony_backlight_props *)bl_get_data(bd);



	value = bd->props.brightness + sdev->offset;

	if (sony_call_snc_handle(sdev->handle, 0x0100 | (value << 16), &result))

	if (sony_call_snc_handle(sdev->handle, sdev->cmd_base | (value << 0x10),

				&result))

		return -EIO;



	return value;
@@ -2496,6 +2498,7 @@ static void sony_nc_backlight_ng_read_limits(int handle, 
{

	u64 offset;

	int i;

	int lvl_table_len = 0;

	u8 min = 0xff, max = 0x00;

	unsigned char buffer[32] = { 0 };
@@ -2515,11 +2518,21 @@ static void sony_nc_backlight_ng_read_limits(int handle, 
	if (i < 0)

		return;



	switch (handle) {

	case 0x012f:

	case 0x0137:

		lvl_table_len = 9;

		break;

	case 0x143:

		lvl_table_len = 16;

		break;

	}



	/* the buffer lists brightness levels available, brightness levels are

	 * from position 0 to 8 in the array, other values are used by ALS

	 * control.

	 */

	for (i = 0; i < 9 && i < ARRAY_SIZE(buffer); i++) {

	for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {



		dprintk("Brightness level: %d\n", buffer[i]);
@@ -2546,14 +2559,22 @@ static void sony_nc_backlight_setup(void) 


	if (sony_find_snc_handle(0x12f) != -1) {

		ops = &sony_backlight_ng_ops;

		sony_bl_props.cmd_base = 0x0100;

		sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);

		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;



	} else if (sony_find_snc_handle(0x137) != -1) {

		ops = &sony_backlight_ng_ops;

		sony_bl_props.cmd_base = 0x0100;

		sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);

		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;



	} else if (sony_find_snc_handle(0x143) != -1) {

		ops = &sony_backlight_ng_ops;

		sony_bl_props.cmd_base = 0x3000;

		sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);

		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;



	} else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",

						&unused))) {

		ops = &sony_backlight_ops;