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bdk: display: use spare reg to store dcs bl duty

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And also remove backlight pwm restoring from coreboot hw deinit path.
This commit is contained in:
CTCaer
2025-12-18 09:54:26 +02:00
parent ba95bb7494
commit 8faa1a6690
3 changed files with 19 additions and 29 deletions
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20
bdk/display/di.c
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@@ -33,10 +33,9 @@
#include "di.inl"
static bool _nx_aula = false;
static u32 _panel_id = 0;
static u32 _panel_id_raw = 0;
static u32 _panel_id = 0;
static u32 _dsi_bl = -1;
static bool _nx_aula = false;
static void _display_panel_and_hw_end(bool no_panel_deinit);
@@ -366,7 +365,7 @@ void display_init()
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_L_SET) = BIT(CLK_L_DISP1);
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_X_SET) = BIT(CLK_X_UART_FST_MIPI_CAL);
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_UART_FST_MIPI_CAL) = CLK_SRC_DIV(6); // Set PLLP_OUT3 and div 6 (68MHz).
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_UART_FST_MIPI_CAL) = CLK_SRC_DIV(6); // Set PLLP_OUT3 and div 6 (17MHz).
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_W_SET) = BIT(CLK_W_DSIA_LP);
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_DSIA_LP) = CLK_SRC_DIV(6); // Set PLLP_OUT and div 6 (68MHz).
@@ -491,7 +490,6 @@ void display_init()
DSI(_DSIREG(DSI_WR_DATA)) = 0x000051; // MIPI_DCS_SET_BRIGHTNESS 0000: 0%. FF07: 100%.
DSI(_DSIREG(DSI_TRIGGER)) = DSI_TRIGGER_HOST;
usleep(5000);
_dsi_bl = 0;
break;
case PANEL_JDI_XXX062M:
@@ -608,7 +606,7 @@ void display_backlight(bool enable)
static void _display_dsi_backlight_brightness(u32 duty)
{
if (_dsi_bl == duty)
if (DISPLAY_A(_DIREG(DC_DISP_BACKLIGHT_DUTY)) == duty)
return;
// Convert duty to candela.
@@ -621,7 +619,7 @@ static void _display_dsi_backlight_brightness(u32 duty)
if (!duty)
usleep(100000);
_dsi_bl = duty;
DISPLAY_A(_DIREG(DC_DISP_BACKLIGHT_DUTY)) = duty;
}
static void _display_pwm_backlight_brightness(u32 duty, u32 step_delay)
@@ -661,14 +659,6 @@ void display_backlight_brightness(u32 brightness, u32 step_delay)
_display_dsi_backlight_brightness(brightness);
}
u32 display_get_backlight_brightness()
{
if (_panel_id != PANEL_SAM_AMS699VC01)
return ((PWM(PWM_CONTROLLER_PWM_CSR_0) >> 16) & 0xFF);
else
return _dsi_bl;
}
static void _display_panel_and_hw_end(bool no_panel_deinit)
{
if (no_panel_deinit)