Disables the crts as per dpms and also disables the ppll associated with the crtc. This should save additional power.
Signed-off-by: Alex Deucher alexdeucher@gmail.com --- drivers/gpu/drm/radeon/atombios_crtc.c | 152 ++++++++++++++++++++------------ 1 files changed, 96 insertions(+), 56 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 8c2d647..a22d5a3 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -669,56 +669,25 @@ static void atombios_crtc_set_dcpll(struct drm_crtc *crtc) atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); }
-static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) +static void atombios_crtc_program_pll(struct drm_crtc *crtc, + int crtc_id, + int pll_id, + u32 encoder_mode, + u32 encoder_id, + u32 clock, + u32 ref_div, + u32 fb_div, + u32 frac_fb_div, + u32 post_div) { - struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); struct drm_device *dev = crtc->dev; struct radeon_device *rdev = dev->dev_private; - struct drm_encoder *encoder = NULL; - struct radeon_encoder *radeon_encoder = NULL; u8 frev, crev; - int index; + int index = GetIndexIntoMasterTable(COMMAND, SetPixelClock); union set_pixel_clock args; - u32 pll_clock = mode->clock; - u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0; - struct radeon_pll *pll; - u32 adjusted_clock; - int encoder_mode = 0;
memset(&args, 0, sizeof(args));
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { - if (encoder->crtc == crtc) { - radeon_encoder = to_radeon_encoder(encoder); - encoder_mode = atombios_get_encoder_mode(encoder); - break; - } - } - - if (!radeon_encoder) - return; - - switch (radeon_crtc->pll_id) { - case ATOM_PPLL1: - pll = &rdev->clock.p1pll; - break; - case ATOM_PPLL2: - pll = &rdev->clock.p2pll; - break; - case ATOM_DCPLL: - case ATOM_PPLL_INVALID: - default: - pll = &rdev->clock.dcpll; - break; - } - - /* adjust pixel clock as needed */ - adjusted_clock = atombios_adjust_pll(crtc, mode, pll); - - radeon_compute_pll(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div, - &ref_div, &post_div); - - index = GetIndexIntoMasterTable(COMMAND, SetPixelClock); if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev)) return; @@ -727,47 +696,49 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode case 1: switch (crev) { case 1: - args.v1.usPixelClock = cpu_to_le16(mode->clock / 10); + if (clock == ATOM_DISABLE) + return; + args.v1.usPixelClock = cpu_to_le16(clock / 10); args.v1.usRefDiv = cpu_to_le16(ref_div); args.v1.usFbDiv = cpu_to_le16(fb_div); args.v1.ucFracFbDiv = frac_fb_div; args.v1.ucPostDiv = post_div; - args.v1.ucPpll = radeon_crtc->pll_id; - args.v1.ucCRTC = radeon_crtc->crtc_id; + args.v1.ucPpll = pll_id; + args.v1.ucCRTC = crtc_id; args.v1.ucRefDivSrc = 1; break; case 2: - args.v2.usPixelClock = cpu_to_le16(mode->clock / 10); + args.v2.usPixelClock = cpu_to_le16(clock / 10); args.v2.usRefDiv = cpu_to_le16(ref_div); args.v2.usFbDiv = cpu_to_le16(fb_div); args.v2.ucFracFbDiv = frac_fb_div; args.v2.ucPostDiv = post_div; - args.v2.ucPpll = radeon_crtc->pll_id; - args.v2.ucCRTC = radeon_crtc->crtc_id; + args.v2.ucPpll = pll_id; + args.v2.ucCRTC = crtc_id; args.v2.ucRefDivSrc = 1; break; case 3: - args.v3.usPixelClock = cpu_to_le16(mode->clock / 10); + args.v3.usPixelClock = cpu_to_le16(clock / 10); args.v3.usRefDiv = cpu_to_le16(ref_div); args.v3.usFbDiv = cpu_to_le16(fb_div); args.v3.ucFracFbDiv = frac_fb_div; args.v3.ucPostDiv = post_div; - args.v3.ucPpll = radeon_crtc->pll_id; - args.v3.ucMiscInfo = (radeon_crtc->pll_id << 2); - args.v3.ucTransmitterId = radeon_encoder->encoder_id; + args.v3.ucPpll = pll_id; + args.v3.ucMiscInfo = (pll_id << 2); + args.v3.ucTransmitterId = encoder_id; args.v3.ucEncoderMode = encoder_mode; break; case 5: - args.v5.ucCRTC = radeon_crtc->crtc_id; - args.v5.usPixelClock = cpu_to_le16(mode->clock / 10); + args.v5.ucCRTC = crtc_id; + args.v5.usPixelClock = cpu_to_le16(clock / 10); args.v5.ucRefDiv = ref_div; args.v5.usFbDiv = cpu_to_le16(fb_div); args.v5.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000); args.v5.ucPostDiv = post_div; args.v5.ucMiscInfo = 0; /* HDMI depth, etc. */ - args.v5.ucTransmitterID = radeon_encoder->encoder_id; + args.v5.ucTransmitterID = encoder_id; args.v5.ucEncoderMode = encoder_mode; - args.v5.ucPpll = radeon_crtc->pll_id; + args.v5.ucPpll = pll_id; break; default: DRM_ERROR("Unknown table version %d %d\n", frev, crev); @@ -782,6 +753,56 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); }
+static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) +{ + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + struct drm_encoder *encoder = NULL; + struct radeon_encoder *radeon_encoder = NULL; + u32 pll_clock = mode->clock; + u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0; + struct radeon_pll *pll; + u32 adjusted_clock; + int encoder_mode = 0; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + if (encoder->crtc == crtc) { + radeon_encoder = to_radeon_encoder(encoder); + encoder_mode = atombios_get_encoder_mode(encoder); + break; + } + } + + if (!radeon_encoder) + return; + + switch (radeon_crtc->pll_id) { + case ATOM_PPLL1: + pll = &rdev->clock.p1pll; + break; + case ATOM_PPLL2: + pll = &rdev->clock.p2pll; + break; + case ATOM_DCPLL: + case ATOM_PPLL_INVALID: + default: + pll = &rdev->clock.dcpll; + break; + } + + /* adjust pixel clock as needed */ + adjusted_clock = atombios_adjust_pll(crtc, mode, pll); + + radeon_compute_pll(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div, + &ref_div, &post_div); + + atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id, + encoder_mode, radeon_encoder->encoder_id, mode->clock, + ref_div, fb_div, frac_fb_div, post_div); + +} + static int evergreen_crtc_set_base(struct drm_crtc *crtc, int x, int y, struct drm_framebuffer *old_fb) { @@ -1191,6 +1212,24 @@ static void atombios_crtc_commit(struct drm_crtc *crtc) atombios_lock_crtc(crtc, ATOM_DISABLE); }
+static void atombios_crtc_disable(struct drm_crtc *crtc) +{ + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + + switch (radeon_crtc->pll_id) { + case ATOM_PPLL1: + case ATOM_PPLL2: + /* disable the ppll */ + atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id, + 0, 0, ATOM_DISABLE, 0, 0, 0, 0); + break; + default: + break; + } + radeon_crtc->pll_id = -1; +} + static const struct drm_crtc_helper_funcs atombios_helper_funcs = { .dpms = atombios_crtc_dpms, .mode_fixup = atombios_crtc_mode_fixup, @@ -1199,6 +1238,7 @@ static const struct drm_crtc_helper_funcs atombios_helper_funcs = { .prepare = atombios_crtc_prepare, .commit = atombios_crtc_commit, .load_lut = radeon_crtc_load_lut, + .disable = atombios_crtc_disable, };
void radeon_atombios_init_crtc(struct drm_device *dev,