diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_legacy_encoders.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 257 |
1 files changed, 251 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c index 59f834ba283d..2f46e0c8df53 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c @@ -28,6 +28,10 @@ #include "radeon_drm.h" #include "radeon.h" #include "atom.h" +#include <linux/backlight.h> +#ifdef CONFIG_PMAC_BACKLIGHT +#include <asm/backlight.h> +#endif static void radeon_legacy_encoder_disable(struct drm_encoder *encoder) { @@ -39,7 +43,7 @@ static void radeon_legacy_encoder_disable(struct drm_encoder *encoder) radeon_encoder->active_device = 0; } -static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode) +static void radeon_legacy_lvds_update(struct drm_encoder *encoder, int mode) { struct drm_device *dev = encoder->dev; struct radeon_device *rdev = dev->dev_private; @@ -47,15 +51,23 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode) uint32_t lvds_gen_cntl, lvds_pll_cntl, pixclks_cntl, disp_pwr_man; int panel_pwr_delay = 2000; bool is_mac = false; + uint8_t backlight_level; DRM_DEBUG_KMS("\n"); + lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL); + backlight_level = (lvds_gen_cntl >> RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff; + if (radeon_encoder->enc_priv) { if (rdev->is_atom_bios) { struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv; panel_pwr_delay = lvds->panel_pwr_delay; + if (lvds->bl_dev) + backlight_level = lvds->backlight_level; } else { struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv; panel_pwr_delay = lvds->panel_pwr_delay; + if (lvds->bl_dev) + backlight_level = lvds->backlight_level; } } @@ -82,11 +94,13 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode) lvds_pll_cntl &= ~RADEON_LVDS_PLL_RESET; WREG32(RADEON_LVDS_PLL_CNTL, lvds_pll_cntl); - lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL); - lvds_gen_cntl |= (RADEON_LVDS_ON | RADEON_LVDS_EN | RADEON_LVDS_DIGON | RADEON_LVDS_BLON); + lvds_gen_cntl &= ~(RADEON_LVDS_DISPLAY_DIS | + RADEON_LVDS_BL_MOD_LEVEL_MASK); + lvds_gen_cntl |= (RADEON_LVDS_ON | RADEON_LVDS_EN | + RADEON_LVDS_DIGON | RADEON_LVDS_BLON | + (backlight_level << RADEON_LVDS_BL_MOD_LEVEL_SHIFT)); if (is_mac) lvds_gen_cntl |= RADEON_LVDS_BL_MOD_EN; - lvds_gen_cntl &= ~(RADEON_LVDS_DISPLAY_DIS); udelay(panel_pwr_delay * 1000); WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl); break; @@ -95,7 +109,6 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode) case DRM_MODE_DPMS_OFF: pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL); WREG32_PLL_P(RADEON_PIXCLKS_CNTL, 0, ~RADEON_PIXCLK_LVDS_ALWAYS_ONb); - lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL); lvds_gen_cntl |= RADEON_LVDS_DISPLAY_DIS; if (is_mac) { lvds_gen_cntl &= ~RADEON_LVDS_BL_MOD_EN; @@ -119,6 +132,25 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode) } +static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode) +{ + struct radeon_device *rdev = encoder->dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + DRM_DEBUG("\n"); + + if (radeon_encoder->enc_priv) { + if (rdev->is_atom_bios) { + struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv; + lvds->dpms_mode = mode; + } else { + struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv; + lvds->dpms_mode = mode; + } + } + + radeon_legacy_lvds_update(encoder, mode); +} + static void radeon_legacy_lvds_prepare(struct drm_encoder *encoder) { struct radeon_device *rdev = encoder->dev->dev_private; @@ -237,9 +269,222 @@ static const struct drm_encoder_helper_funcs radeon_legacy_lvds_helper_funcs = { .disable = radeon_legacy_encoder_disable, }; +#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) + +#define MAX_RADEON_LEVEL 0xFF + +struct radeon_backlight_privdata { + struct radeon_encoder *encoder; + uint8_t negative; +}; + +static uint8_t radeon_legacy_lvds_level(struct backlight_device *bd) +{ + struct radeon_backlight_privdata *pdata = bl_get_data(bd); + uint8_t level; + + /* Convert brightness to hardware level */ + if (bd->props.brightness < 0) + level = 0; + else if (bd->props.brightness > MAX_RADEON_LEVEL) + level = MAX_RADEON_LEVEL; + else + level = bd->props.brightness; + + if (pdata->negative) + level = MAX_RADEON_LEVEL - level; + + return level; +} + +static int radeon_legacy_backlight_update_status(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; + int dpms_mode = DRM_MODE_DPMS_ON; + + if (radeon_encoder->enc_priv) { + if (rdev->is_atom_bios) { + struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv; + dpms_mode = lvds->dpms_mode; + lvds->backlight_level = radeon_legacy_lvds_level(bd); + } else { + struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv; + dpms_mode = lvds->dpms_mode; + lvds->backlight_level = radeon_legacy_lvds_level(bd); + } + } + + if (bd->props.brightness > 0) + radeon_legacy_lvds_update(&radeon_encoder->base, dpms_mode); + else + radeon_legacy_lvds_update(&radeon_encoder->base, DRM_MODE_DPMS_OFF); + + return 0; +} + +static int radeon_legacy_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; + uint8_t backlight_level; + + backlight_level = (RREG32(RADEON_LVDS_GEN_CNTL) >> + RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff; + + return pdata->negative ? MAX_RADEON_LEVEL - backlight_level : backlight_level; +} + +static const struct backlight_ops radeon_backlight_ops = { + .get_brightness = radeon_legacy_backlight_get_brightness, + .update_status = radeon_legacy_backlight_update_status, +}; + +void radeon_legacy_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; + uint8_t backlight_level; + + if (!radeon_encoder->enc_priv) + return; + +#ifdef CONFIG_PMAC_BACKLIGHT + if (!pmac_has_backlight_type("ati") && + !pmac_has_backlight_type("mnca")) + return; +#endif + + pdata = kmalloc(sizeof(struct radeon_backlight_privdata), GFP_KERNEL); + if (!pdata) { + DRM_ERROR("Memory allocation failed\n"); + goto error; + } + + props.max_brightness = MAX_RADEON_LEVEL; + props.type = BACKLIGHT_RAW; + bd = backlight_device_register("radeon_bl", &drm_connector->kdev, + pdata, &radeon_backlight_ops, &props); + if (IS_ERR(bd)) { + DRM_ERROR("Backlight registration failed\n"); + goto error; + } + + pdata->encoder = radeon_encoder; + + backlight_level = (RREG32(RADEON_LVDS_GEN_CNTL) >> + RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff; + + /* First, try to detect backlight level sense based on the assumption + * that firmware set it up at full brightness + */ + if (backlight_level == 0) + pdata->negative = true; + else if (backlight_level == 0xff) + pdata->negative = false; + else { + /* XXX hack... maybe some day we can figure out in what direction + * backlight should work on a given panel? + */ + pdata->negative = (rdev->family != CHIP_RV200 && + rdev->family != CHIP_RV250 && + rdev->family != CHIP_RV280 && + rdev->family != CHIP_RV350); + +#ifdef CONFIG_PMAC_BACKLIGHT + pdata->negative = (pdata->negative || + of_machine_is_compatible("PowerBook4,3") || + of_machine_is_compatible("PowerBook6,3") || + of_machine_is_compatible("PowerBook6,5")); +#endif + } + + if (rdev->is_atom_bios) { + struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv; + lvds->bl_dev = bd; + } else { + struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv; + lvds->bl_dev = bd; + } + + bd->props.brightness = radeon_legacy_backlight_get_brightness(bd); + bd->props.power = FB_BLANK_UNBLANK; + backlight_update_status(bd); + + DRM_INFO("radeon legacy LVDS backlight initialized\n"); + + return; + +error: + kfree(pdata); + return; +} + +static void radeon_legacy_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; + + if (!radeon_encoder->enc_priv) + return; + + if (rdev->is_atom_bios) { + struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv; + bd = lvds->bl_dev; + lvds->bl_dev = NULL; + } else { + struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv; + bd = lvds->bl_dev; + lvds->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 legacy LVDS backlight unloaded\n"); + } +} + +#else /* !CONFIG_BACKLIGHT_CLASS_DEVICE */ + +void radeon_legacy_backlight_init(struct radeon_encoder *encoder) +{ +} + +static void radeon_legacy_backlight_exit(struct radeon_encoder *encoder) +{ +} + +#endif + + +static void radeon_lvds_enc_destroy(struct drm_encoder *encoder) +{ + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + + if (radeon_encoder->enc_priv) { + radeon_legacy_backlight_exit(radeon_encoder); + kfree(radeon_encoder->enc_priv); + } + drm_encoder_cleanup(encoder); + kfree(radeon_encoder); +} static const struct drm_encoder_funcs radeon_legacy_lvds_enc_funcs = { - .destroy = radeon_enc_destroy, + .destroy = radeon_lvds_enc_destroy, }; static void radeon_legacy_primary_dac_dpms(struct drm_encoder *encoder, int mode) |