diff options
author | Matthew Garrett <mjg@redhat.com> | 2011-03-22 16:30:21 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:43:59 -0700 |
commit | bb7ca747f8d6243b3943c5b133048652020f4a50 (patch) | |
tree | b40e879a7b26e3763aea2af2d4dd9079483de11e /drivers/video/backlight | |
parent | ccd7510fd8dea5b4b2af87fb2aef2ebd6b23b76b (diff) | |
download | linux-bb7ca747f8d6243b3943c5b133048652020f4a50.tar.bz2 |
backlight: add backlight type
There may be multiple ways of controlling the backlight on a given
machine. Allow drivers to expose the type of interface they are
providing, making it possible for userspace to make appropriate policy
decisions.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/backlight')
24 files changed, 46 insertions, 1 deletions
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c index b224396b86d5..e59623a15f3f 100644 --- a/drivers/video/backlight/88pm860x_bl.c +++ b/drivers/video/backlight/88pm860x_bl.c @@ -227,6 +227,7 @@ static int pm860x_backlight_probe(struct platform_device *pdev) } memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; bl = backlight_device_register(name, &pdev->dev, data, &pm860x_backlight_ops, &props); diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c index 9f436e014f85..af3119707dbf 100644 --- a/drivers/video/backlight/adp5520_bl.c +++ b/drivers/video/backlight/adp5520_bl.c @@ -303,6 +303,7 @@ static int __devinit adp5520_bl_probe(struct platform_device *pdev) mutex_init(&data->lock); memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = ADP5020_MAX_BRIGHTNESS; bl = backlight_device_register(pdev->name, data->master, data, &adp5520_bl_ops, &props); diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c index 734c650a47c4..d2a96a421ffd 100644 --- a/drivers/video/backlight/adp8860_bl.c +++ b/drivers/video/backlight/adp8860_bl.c @@ -709,6 +709,7 @@ static int __devinit adp8860_probe(struct i2c_client *client, i2c_set_clientdata(client, data); memset(&props, 0, sizeof(props)); + props.type = BACKLIGHT_RAW; props.max_brightness = ADP8860_MAX_BRIGHTNESS; mutex_init(&data->lock); diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c index fe9af129c5dd..c861c41af442 100644 --- a/drivers/video/backlight/adx_bl.c +++ b/drivers/video/backlight/adx_bl.c @@ -104,6 +104,7 @@ static int __devinit adx_backlight_probe(struct platform_device *pdev) } memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = 0xff; bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev, bl, &adx_backlight_ops, &props); diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c index e6a66dab088c..0443a4f71858 100644 --- a/drivers/video/backlight/atmel-pwm-bl.c +++ b/drivers/video/backlight/atmel-pwm-bl.c @@ -168,6 +168,7 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev) } memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = pdata->pwm_duty_max - pdata->pwm_duty_min; bldev = backlight_device_register("atmel-pwm-bl", &pdev->dev, pwmbl, &atmel_pwm_bl_ops, &props); diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index 08703299ef61..80d292fb92d8 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -19,6 +19,12 @@ #include <asm/backlight.h> #endif +static const char const *backlight_types[] = { + [BACKLIGHT_RAW] = "raw", + [BACKLIGHT_PLATFORM] = "platform", + [BACKLIGHT_FIRMWARE] = "firmware", +}; + #if defined(CONFIG_FB) || (defined(CONFIG_FB_MODULE) && \ defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)) /* This callback gets called when something important happens inside a @@ -169,6 +175,14 @@ static ssize_t backlight_store_brightness(struct device *dev, return rc; } +static ssize_t backlight_show_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct backlight_device *bd = to_backlight_device(dev); + + return sprintf(buf, "%s\n", backlight_types[bd->props.type]); +} + static ssize_t backlight_show_max_brightness(struct device *dev, struct device_attribute *attr, char *buf) { @@ -234,6 +248,7 @@ static struct device_attribute bl_device_attributes[] = { __ATTR(actual_brightness, 0444, backlight_show_actual_brightness, NULL), __ATTR(max_brightness, 0444, backlight_show_max_brightness, NULL), + __ATTR(type, 0444, backlight_show_type, NULL), __ATTR_NULL, }; @@ -292,9 +307,16 @@ struct backlight_device *backlight_device_register(const char *name, dev_set_drvdata(&new_bd->dev, devdata); /* Set default properties */ - if (props) + if (props) { memcpy(&new_bd->props, props, sizeof(struct backlight_properties)); + if (props->type <= 0 || props->type >= BACKLIGHT_TYPE_MAX) { + WARN(1, "%s: invalid backlight type", name); + new_bd->props.type = BACKLIGHT_RAW; + } + } else { + new_bd->props.type = BACKLIGHT_RAW; + } rc = device_register(&new_bd->dev); if (rc) { diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c index 1e71c35083bb..af6098396fe6 100644 --- a/drivers/video/backlight/corgi_lcd.c +++ b/drivers/video/backlight/corgi_lcd.c @@ -562,6 +562,7 @@ static int __devinit corgi_lcd_probe(struct spi_device *spi) lcd->mode = (pdata) ? pdata->init_mode : CORGI_LCD_MODE_VGA; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = pdata->max_intensity; lcd->bl_dev = backlight_device_register("corgi_bl", &spi->dev, lcd, &corgi_bl_ops, &props); diff --git a/drivers/video/backlight/cr_bllcd.c b/drivers/video/backlight/cr_bllcd.c index 397d15eb1ea8..6c8c54041fae 100644 --- a/drivers/video/backlight/cr_bllcd.c +++ b/drivers/video/backlight/cr_bllcd.c @@ -193,6 +193,7 @@ static int cr_backlight_probe(struct platform_device *pdev) } memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; bdp = backlight_device_register("cr-backlight", &pdev->dev, NULL, &cr_backlight_ops, &props); if (IS_ERR(bdp)) { diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c index 87659ed79bd7..62043f12a5a4 100644 --- a/drivers/video/backlight/da903x_bl.c +++ b/drivers/video/backlight/da903x_bl.c @@ -136,6 +136,7 @@ static int da903x_backlight_probe(struct platform_device *pdev) da903x_write(data->da903x_dev, DA9034_WLED_CONTROL2, DA9034_WLED_ISET(pdata->output_current)); + props.type = BACKLIGHT_RAW; props.max_brightness = max_brightness; bl = backlight_device_register(pdev->name, data->da903x_dev, data, &da903x_backlight_ops, &props); diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c index b0cc49184803..9f1e389d51d2 100644 --- a/drivers/video/backlight/ep93xx_bl.c +++ b/drivers/video/backlight/ep93xx_bl.c @@ -87,6 +87,7 @@ static int __init ep93xxbl_probe(struct platform_device *dev) ep93xxbl->mmio = EP93XX_RASTER_BRIGHTNESS; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = EP93XX_MAX_BRIGHT; bl = backlight_device_register(dev->name, &dev->dev, ep93xxbl, &ep93xxbl_ops, &props); diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c index 312ca619735d..8c6befd65a33 100644 --- a/drivers/video/backlight/generic_bl.c +++ b/drivers/video/backlight/generic_bl.c @@ -91,6 +91,7 @@ static int genericbl_probe(struct platform_device *pdev) name = machinfo->name; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = machinfo->max_intensity; bd = backlight_device_register(name, &pdev->dev, NULL, &genericbl_ops, &props); diff --git a/drivers/video/backlight/hp680_bl.c b/drivers/video/backlight/hp680_bl.c index 267d23f8d645..38aa00272141 100644 --- a/drivers/video/backlight/hp680_bl.c +++ b/drivers/video/backlight/hp680_bl.c @@ -109,6 +109,7 @@ static int __devinit hp680bl_probe(struct platform_device *pdev) struct backlight_device *bd; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = HP680_MAX_INTENSITY; bd = backlight_device_register("hp680-bl", &pdev->dev, NULL, &hp680bl_ops, &props); diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c index 2f177b3a4885..40e4fa8fcf92 100644 --- a/drivers/video/backlight/jornada720_bl.c +++ b/drivers/video/backlight/jornada720_bl.c @@ -106,6 +106,7 @@ static int jornada_bl_probe(struct platform_device *pdev) struct backlight_device *bd; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = BL_MAX_BRIGHT; bd = backlight_device_register(S1D_DEVICENAME, &pdev->dev, NULL, &jornada_bl_ops, &props); diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c index f439a8632287..72dd5556a35b 100644 --- a/drivers/video/backlight/kb3886_bl.c +++ b/drivers/video/backlight/kb3886_bl.c @@ -149,6 +149,7 @@ static int kb3886bl_probe(struct platform_device *pdev) machinfo->limit_mask = -1; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = machinfo->max_intensity; kb3886_backlight_device = backlight_device_register("kb3886-bl", &pdev->dev, NULL, diff --git a/drivers/video/backlight/locomolcd.c b/drivers/video/backlight/locomolcd.c index d2f59015d517..bbca3127071e 100644 --- a/drivers/video/backlight/locomolcd.c +++ b/drivers/video/backlight/locomolcd.c @@ -184,6 +184,7 @@ static int locomolcd_probe(struct locomo_dev *ldev) local_irq_restore(flags); memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = 4; locomolcd_bl_device = backlight_device_register("locomo-bl", &ldev->dev, NULL, diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c index 209acc105cbc..07e8e273ced0 100644 --- a/drivers/video/backlight/max8925_bl.c +++ b/drivers/video/backlight/max8925_bl.c @@ -136,6 +136,7 @@ static int __devinit max8925_backlight_probe(struct platform_device *pdev) data->current_brightness = 0; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; bl = backlight_device_register(name, &pdev->dev, data, &max8925_backlight_ops, &props); diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c index 1485f7345f49..74c33944aa86 100644 --- a/drivers/video/backlight/mbp_nvidia_bl.c +++ b/drivers/video/backlight/mbp_nvidia_bl.c @@ -367,6 +367,7 @@ static int __init mbp_init(void) return -ENXIO; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_PLATFORM; props.max_brightness = 15; mbp_backlight_device = backlight_device_register("mbp_backlight", NULL, NULL, diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c index d3bc56296c8d..08d26a72394c 100644 --- a/drivers/video/backlight/omap1_bl.c +++ b/drivers/video/backlight/omap1_bl.c @@ -146,6 +146,7 @@ static int omapbl_probe(struct platform_device *pdev) return -ENOMEM; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = OMAPBL_MAX_INTENSITY; dev = backlight_device_register("omap-bl", &pdev->dev, bl, &omapbl_ops, &props); diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c index 3c424f7efdcc..ef5628d60563 100644 --- a/drivers/video/backlight/pcf50633-backlight.c +++ b/drivers/video/backlight/pcf50633-backlight.c @@ -112,6 +112,7 @@ static int __devinit pcf50633_bl_probe(struct platform_device *pdev) if (!pcf_bl) return -ENOMEM; + bl_props.type = BACKLIGHT_RAW; bl_props.max_brightness = 0x3f; bl_props.power = FB_BLANK_UNBLANK; diff --git a/drivers/video/backlight/progear_bl.c b/drivers/video/backlight/progear_bl.c index 809278c90738..6af183d6465e 100644 --- a/drivers/video/backlight/progear_bl.c +++ b/drivers/video/backlight/progear_bl.c @@ -84,6 +84,7 @@ static int progearbl_probe(struct platform_device *pdev) pci_write_config_byte(sb_dev, SB_MPS1, temp | 0x20); memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = HW_LEVEL_MAX - HW_LEVEL_MIN; progear_backlight_device = backlight_device_register("progear-bl", &pdev->dev, NULL, diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 21866ec69656..2c2a2c703c14 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -108,6 +108,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "got pwm for backlight\n"); memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = data->max_brightness; bl = backlight_device_register(dev_name(&pdev->dev), &pdev->dev, pb, &pwm_backlight_ops, &props); diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c index 5927db0da999..322040f686c2 100644 --- a/drivers/video/backlight/s6e63m0.c +++ b/drivers/video/backlight/s6e63m0.c @@ -778,6 +778,7 @@ static int __devinit s6e63m0_probe(struct spi_device *spi) bd->props.max_brightness = MAX_BRIGHTNESS; bd->props.brightness = MAX_BRIGHTNESS; + bd->props.type = BACKLIGHT_RAW; lcd->bd = bd; /* diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c index 2a04b382ec48..425a7365470b 100644 --- a/drivers/video/backlight/tosa_bl.c +++ b/drivers/video/backlight/tosa_bl.c @@ -102,6 +102,7 @@ static int __devinit tosa_bl_probe(struct i2c_client *client, data->i2c = client; memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; props.max_brightness = 512 - 1; data->bl = backlight_device_register("tosa-bl", &client->dev, data, &bl_ops, &props); diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c index 08fd87f3aecc..d4c6eb248ff9 100644 --- a/drivers/video/backlight/wm831x_bl.c +++ b/drivers/video/backlight/wm831x_bl.c @@ -193,6 +193,7 @@ static int wm831x_backlight_probe(struct platform_device *pdev) data->current_brightness = 0; data->isink_reg = isink_reg; + props.type = BACKLIGHT_RAW; props.max_brightness = max_isel; bl = backlight_device_register("wm831x", &pdev->dev, data, &wm831x_backlight_ops, &props); |