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radeon_hd : control of brightness

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-detect if model > HD600
-apply change by calling ATOM_TRANSMITTER_ACTION_BL_BRIGHTNESS_CONTROL and ATOM_TRANSMITTER_ACTION_LCD_BLON
Author :     Anarchos <sylvain_kerjean@hotmail.com>

Change-Id: I30b9dd66c71e05427b827fc3ef2c7fa6c498646f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2786
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
This commit is contained in:
Anarchos 2021-12-17 16:25:25 +01:00 committed by Alex von Gluck IV
parent 7127c048db
commit 69fdc6be3b
3 changed files with 71 additions and 0 deletions
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4
src/add-ons/accelerants/radeon_hd/accelerant_protos.h
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@ -38,6 +38,10 @@ status_t radeon_get_pixel_clock_limits(display_mode* mode,
uint32* low, uint32* high);
status_t radeon_get_edid_info(void* info, size_t size, uint32* edid_version);
//brightness
status_t radeon_set_brightness(float brightness);
status_t radeon_get_brightness(float* brightness);
// accelerant engine
uint32 radeon_accelerant_engine_count(void);
status_t radeon_acquire_engine(uint32 capabilities, uint32 maxWait,

4
src/add-ons/accelerants/radeon_hd/hooks.cpp
View File

@ -54,6 +54,10 @@ get_accelerant_hook(uint32 feature, void* data)
return (void*)radeon_set_display_mode;
case B_GET_DISPLAY_MODE:
return (void*)radeon_get_display_mode;
case B_GET_BRIGHTNESS:
return (void*)radeon_get_brightness;
case B_SET_BRIGHTNESS:
return (void*)radeon_set_brightness;
/* memory controller */
case B_GET_FRAME_BUFFER_CONFIG:

63
src/add-ons/accelerants/radeon_hd/mode.cpp
View File

@ -445,3 +445,66 @@ get_mode_bpp(display_mode* mode)
__func__);
return 32;
}
static uint32_t
radeon_get_backlight_register()
{
// R600 and up is 0x172c else its 0x0018
if (gInfo->shared_info->chipsetID >= RADEON_R600)
return 0x172c;
return 0x0018;
}
status_t
radeon_set_brightness(float brightness)
{
TRACE("%s (%f)\n", __func__, brightness);
if (brightness < 0 || brightness > 1)
return B_BAD_VALUE;
uint32_t backlightReg = radeon_get_backlight_register();
uint8_t brightnessRaw = (uint8_t)ceilf(brightness * 255);
uint32_t level = Read32(OUT, backlightReg);
TRACE("brightness level = %lx\n", level);
level &= ~ATOM_S2_CURRENT_BL_LEVEL_MASK;
level |= (( brightnessRaw << ATOM_S2_CURRENT_BL_LEVEL_SHIFT )
& ATOM_S2_CURRENT_BL_LEVEL_MASK);
TRACE("new brightness level = %lx\n", level);
Write32(OUT, backlightReg, level);
//TODO crtcID = 0: see create_mode
// TODO: multi-monitor? for now we use VESA and not gDisplay edid
uint8 crtcID = 0;
//TODO : test if it is a LCD ?
uint32 connectorIndex = gDisplay[crtcID]->connectorIndex;
connector_info* connector = gConnector[connectorIndex];
pll_info* pll = &connector->encoder.pll;
transmitter_dig_setup(connectorIndex, pll->pixelClock,
0, 0, ATOM_TRANSMITTER_ACTION_BL_BRIGHTNESS_CONTROL);
transmitter_dig_setup(connectorIndex, pll->pixelClock,
0, 0, ATOM_TRANSMITTER_ACTION_LCD_BLON);
return B_OK;
}
status_t
radeon_get_brightness(float* brightness)
{
TRACE("%s\n", __func__);
if (brightness == NULL)
return B_BAD_VALUE;
uint32_t backlightReg = Read32(OUT, radeon_get_backlight_register());
uint8_t brightnessRaw = ((backlightReg & ATOM_S2_CURRENT_BL_LEVEL_MASK) >>
ATOM_S2_CURRENT_BL_LEVEL_SHIFT);
*brightness = (float)brightnessRaw / 255;
return B_OK;
}