diff options
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_encoders.c | 231 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 15 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_encoders.c | 18 |
3 files changed, 248 insertions, 16 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index 6e8803a1170c..f3645e15ef11 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -28,9 +28,238 @@ #include "radeon_drm.h" #include "radeon.h" #include "atom.h" +#include <linux/backlight.h> extern int atom_debug; +#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) + +static u8 +radeon_atom_get_backlight_level_from_reg(struct radeon_device *rdev) +{ + u8 backlight_level; + u32 bios_2_scratch; + + if (rdev->family >= CHIP_R600) + bios_2_scratch = RREG32(R600_BIOS_2_SCRATCH); + else + bios_2_scratch = RREG32(RADEON_BIOS_2_SCRATCH); + + backlight_level = ((bios_2_scratch & ATOM_S2_CURRENT_BL_LEVEL_MASK) >> + ATOM_S2_CURRENT_BL_LEVEL_SHIFT); + + return backlight_level; +} + +static void +radeon_atom_set_backlight_level_to_reg(struct radeon_device *rdev, + u8 backlight_level) +{ + u32 bios_2_scratch; + + if (rdev->family >= CHIP_R600) + bios_2_scratch = RREG32(R600_BIOS_2_SCRATCH); + else + bios_2_scratch = RREG32(RADEON_BIOS_2_SCRATCH); + + bios_2_scratch &= ~ATOM_S2_CURRENT_BL_LEVEL_MASK; + bios_2_scratch |= ((backlight_level << ATOM_S2_CURRENT_BL_LEVEL_SHIFT) & + ATOM_S2_CURRENT_BL_LEVEL_MASK); + + if (rdev->family >= CHIP_R600) + WREG32(R600_BIOS_2_SCRATCH, bios_2_scratch); + else + WREG32(RADEON_BIOS_2_SCRATCH, bios_2_scratch); +} + +static void +atombios_set_panel_brightness(struct radeon_encoder *radeon_encoder) +{ + struct drm_encoder *encoder = &radeon_encoder->base; + struct drm_device *dev = radeon_encoder->base.dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder_atom_dig *dig; + DISPLAY_DEVICE_OUTPUT_CONTROL_PS_ALLOCATION args; + int index; + + if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { + dig = radeon_encoder->enc_priv; + radeon_atom_set_backlight_level_to_reg(rdev, dig->backlight_level); + + switch (radeon_encoder->encoder_id) { + case ENCODER_OBJECT_ID_INTERNAL_LVDS: + case ENCODER_OBJECT_ID_INTERNAL_LVTM1: + index = GetIndexIntoMasterTable(COMMAND, LCD1OutputControl); + if (dig->backlight_level == 0) { + args.ucAction = ATOM_LCD_BLOFF; + atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); + } else { + args.ucAction = ATOM_LCD_BL_BRIGHTNESS_CONTROL; + atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); + args.ucAction = ATOM_LCD_BLON; + atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); + } + break; + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: + if (dig->backlight_level == 0) + atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0); + else { + atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_BL_BRIGHTNESS_CONTROL, 0, 0); + atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0); + } + break; + default: + break; + } + } +} + +static u8 radeon_atom_bl_level(struct backlight_device *bd) +{ + u8 level; + + /* Convert brightness to hardware level */ + if (bd->props.brightness < 0) + level = 0; + else if (bd->props.brightness > RADEON_MAX_BL_LEVEL) + level = RADEON_MAX_BL_LEVEL; + else + level = bd->props.brightness; + + return level; +} + +static int radeon_atom_backlight_update_status(struct backlight_device *bd) +{ + struct radeon_backlight_privdata *pdata = bl_get_data(bd); + struct radeon_encoder *radeon_encoder = pdata->encoder; + + if (radeon_encoder->enc_priv) { + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + dig->backlight_level = radeon_atom_bl_level(bd); + atombios_set_panel_brightness(radeon_encoder); + } + + return 0; +} + +static int radeon_atom_backlight_get_brightness(struct backlight_device *bd) +{ + struct radeon_backlight_privdata *pdata = bl_get_data(bd); + struct radeon_encoder *radeon_encoder = pdata->encoder; + struct drm_device *dev = radeon_encoder->base.dev; + struct radeon_device *rdev = dev->dev_private; + + return radeon_atom_get_backlight_level_from_reg(rdev); +} + +static const struct backlight_ops radeon_atom_backlight_ops = { + .get_brightness = radeon_atom_backlight_get_brightness, + .update_status = radeon_atom_backlight_update_status, +}; + +void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder, + struct drm_connector *drm_connector) +{ + struct drm_device *dev = radeon_encoder->base.dev; + struct radeon_device *rdev = dev->dev_private; + struct backlight_device *bd; + struct backlight_properties props; + struct radeon_backlight_privdata *pdata; + struct radeon_encoder_atom_dig *dig; + u8 backlight_level; + + if (!radeon_encoder->enc_priv) + return; + + if (!rdev->is_atom_bios) + return; + + if (!(rdev->mode_info.firmware_flags & ATOM_BIOS_INFO_BL_CONTROLLED_BY_GPU)) + return; + + pdata = kmalloc(sizeof(struct radeon_backlight_privdata), GFP_KERNEL); + if (!pdata) { + DRM_ERROR("Memory allocation failed\n"); + goto error; + } + + memset(&props, 0, sizeof(props)); + props.max_brightness = RADEON_MAX_BL_LEVEL; + props.type = BACKLIGHT_RAW; + bd = backlight_device_register("radeon_bl", &drm_connector->kdev, + pdata, &radeon_atom_backlight_ops, &props); + if (IS_ERR(bd)) { + DRM_ERROR("Backlight registration failed\n"); + goto error; + } + + pdata->encoder = radeon_encoder; + + backlight_level = radeon_atom_get_backlight_level_from_reg(rdev); + + dig = radeon_encoder->enc_priv; + dig->bl_dev = bd; + + bd->props.brightness = radeon_atom_backlight_get_brightness(bd); + bd->props.power = FB_BLANK_UNBLANK; + backlight_update_status(bd); + + DRM_INFO("radeon atom DIG backlight initialized\n"); + + return; + +error: + kfree(pdata); + return; +} + +static void radeon_atom_backlight_exit(struct radeon_encoder *radeon_encoder) +{ + struct drm_device *dev = radeon_encoder->base.dev; + struct radeon_device *rdev = dev->dev_private; + struct backlight_device *bd = NULL; + struct radeon_encoder_atom_dig *dig; + + if (!radeon_encoder->enc_priv) + return; + + if (!rdev->is_atom_bios) + return; + + if (!(rdev->mode_info.firmware_flags & ATOM_BIOS_INFO_BL_CONTROLLED_BY_GPU)) + return; + + dig = radeon_encoder->enc_priv; + bd = dig->bl_dev; + dig->bl_dev = NULL; + + if (bd) { + struct radeon_legacy_backlight_privdata *pdata; + + pdata = bl_get_data(bd); + backlight_device_unregister(bd); + kfree(pdata); + + DRM_INFO("radeon atom LVDS backlight unloaded\n"); + } +} + +#else /* !CONFIG_BACKLIGHT_CLASS_DEVICE */ + +void radeon_atom_backlight_init(struct radeon_encoder *encoder) +{ +} + +static void radeon_atom_backlight_exit(struct radeon_encoder *encoder) +{ +} + +#endif + /* evil but including atombios.h is much worse */ bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index, struct drm_display_mode *mode); @@ -2286,6 +2515,8 @@ static const struct drm_encoder_helper_funcs radeon_atom_dac_helper_funcs = { void radeon_enc_destroy(struct drm_encoder *encoder) { struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) + radeon_atom_backlight_exit(radeon_encoder); kfree(radeon_encoder->enc_priv); drm_encoder_cleanup(encoder); kfree(radeon_encoder); diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 895e628b60f8..748c5f229c28 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -40,10 +40,6 @@ radeon_atombios_connected_scratch_regs(struct drm_connector *connector, struct drm_encoder *encoder, bool connected); -extern void -radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder, - struct drm_connector *drm_connector); - void radeon_connector_hotplug(struct drm_connector *connector) { struct drm_device *dev = connector->dev; @@ -2008,15 +2004,4 @@ radeon_add_legacy_connector(struct drm_device *dev, connector->polled = DRM_CONNECTOR_POLL_HPD; connector->display_info.subpixel_order = subpixel_order; drm_sysfs_connector_add(connector); - if (connector_type == DRM_MODE_CONNECTOR_LVDS) { - struct drm_encoder *drm_encoder; - - list_for_each_entry(drm_encoder, &dev->mode_config.encoder_list, head) { - struct radeon_encoder *radeon_encoder; - - radeon_encoder = to_radeon_encoder(drm_encoder); - if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_LVDS) - radeon_legacy_backlight_init(radeon_encoder, connector); - } - } } diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 74670696277d..93b0d64b3f6d 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -29,6 +29,14 @@ #include "radeon.h" #include "atom.h" +extern void +radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder, + struct drm_connector *drm_connector); +extern void +radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder, + struct drm_connector *drm_connector); + + static uint32_t radeon_encoder_clones(struct drm_encoder *encoder) { struct drm_device *dev = encoder->dev; @@ -153,6 +161,7 @@ radeon_get_encoder_enum(struct drm_device *dev, uint32_t supported_device, uint8 void radeon_link_encoder_connector(struct drm_device *dev) { + struct radeon_device *rdev = dev->dev_private; struct drm_connector *connector; struct radeon_connector *radeon_connector; struct drm_encoder *encoder; @@ -163,8 +172,15 @@ radeon_link_encoder_connector(struct drm_device *dev) radeon_connector = to_radeon_connector(connector); list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { radeon_encoder = to_radeon_encoder(encoder); - if (radeon_encoder->devices & radeon_connector->devices) + if (radeon_encoder->devices & radeon_connector->devices) { drm_mode_connector_attach_encoder(connector, encoder); + if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { + if (rdev->is_atom_bios) + radeon_atom_backlight_init(radeon_encoder, connector); + else + radeon_legacy_backlight_init(radeon_encoder, connector); + } + } } } } |