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drm/rockchip: ebc: Add sleep pinctrl for RK3576 ebc

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When PD_VPU power domain is off, the pin state of ebc is X state.
Set the EBC pin control to GPIO and pull low to ensure that it remains
in low state.

Change-Id: I3e4fcab3b0c5c4e5b4e47d78cec021562750ffb5
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
This commit is contained in:
Chaoyi Chen
2025-06-25 10:03:44 +00:00
committed by Tao Huang
parent b0d0e45003
commit f21fdcd061
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/rockchip/ebc-dev/tcon/ebc_tcon.c
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@@ -16,6 +16,7 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/irq.h>
@@ -428,14 +429,15 @@ static int rk3576_tcon_enable(struct ebc_tcon *tcon, struct ebc_panel *panel)
enable_irq(tcon->irq);
tcon->panel = panel;
pinctrl_pm_select_default_state(tcon->dev);
return 0;
}
static void rk3576_tcon_disable(struct ebc_tcon *tcon)
{
disable_irq(tcon->irq);
/* output low */
tcon_update_bits(tcon, RK3576_EBC_DSP_CTRL2, RK3576_DSP_OUT_LOW, RK3576_DSP_OUT_LOW);
pinctrl_pm_select_sleep_state(tcon->dev);
pm_runtime_put_sync(tcon->dev);
clk_disable_unprepare(tcon->dclk);