[PATCH 2/2] drm/radeon/kms/atom: add crtc disable function
Alex Deucher
alexdeucher at gmail.com
Fri Jun 11 15:00:09 PDT 2010
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 at 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,
--
1.7.0.1
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