Merge tag 'fixes-5.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes

Fixes for omap variants

Few fixes for ti-sysc interconnect target module driver for no-idle
quirks that caused nfsroot to fail on some dra7 boards.

And let's fixes to get LCD working again for logicpd board that got
broken a while back with removal of panel-dpi driver. We need to now
use generic CONFIG_DRM_PANEL_SIMPLE instead.

* tag 'fixes-5.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()
  ARM: dts: logicpd-som-lv: Fix i2c2 and i2c3 Pin mux
  ARM: dts: am3517-evm: Fix missing video
  ARM: dts: logicpd-torpedo-baseboard: Fix missing video
  ARM: omap2plus_defconfig: Fix missing video
  bus: ti-sysc: Fix handling of invalid clocks
  bus: ti-sysc: Fix clock handling for no-idle quirks

Link: https://lore.kernel.org/r/pull-1568819401-72461@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>

6 files changed, 64 insertions, 79 deletions

diff --git a/arch/arm/boot/dts/am3517-evm.dts b/arch/arm/boot/dts/am3517-evm.dts
index ebfe28c2f544..a1fd3e63e86e 100644
--- a/arch/arm/boot/dts/am3517-evm.dts
+++ b/arch/arm/boot/dts/am3517-evm.dts
@@ -124,10 +124,11 @@
 	};
 
 	lcd0: display@0 {
-		compatible = "panel-dpi";
+		/* This isn't the exact LCD, but the timings meet spec */
+		/* To make it work, set CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK=4 */
+		compatible = "newhaven,nhd-4.3-480272ef-atxl";
 		label = "15";
-		status = "okay";
-		pinctrl-names = "default";
+		backlight = <&bl>;
 		enable-gpios = <&gpio6 16 GPIO_ACTIVE_HIGH>;	/* gpio176, lcd INI */
 		vcc-supply = <&vdd_io_reg>;
 
@@ -136,22 +137,6 @@
 				remote-endpoint = <&dpi_out>;
 			};
 		};
-
-		panel-timing {
-			clock-frequency = <9000000>;
-			hactive = <480>;
-			vactive = <272>;
-			hfront-porch = <3>;
-			hback-porch = <2>;
-			hsync-len = <42>;
-			vback-porch = <3>;
-			vfront-porch = <4>;
-			vsync-len = <11>;
-			hsync-active = <0>;
-			vsync-active = <0>;
-			de-active = <1>;
-			pixelclk-active = <1>;
-		};
 	};
 
 	bl: backlight {
diff --git a/arch/arm/boot/dts/logicpd-som-lv.dtsi b/arch/arm/boot/dts/logicpd-som-lv.dtsi
index 5563ee54c960..b56524cc7fe2 100644
--- a/arch/arm/boot/dts/logicpd-som-lv.dtsi
+++ b/arch/arm/boot/dts/logicpd-som-lv.dtsi
@@ -228,6 +228,20 @@
 		>;
 	};
 
+	i2c2_pins: pinmux_i2c2_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x21be, PIN_INPUT | MUX_MODE0)	/* i2c2_scl */
+			OMAP3_CORE1_IOPAD(0x21c0, PIN_INPUT | MUX_MODE0)	/* i2c2_sda */
+		>;
+	};
+
+	i2c3_pins: pinmux_i2c3_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x21c2, PIN_INPUT | MUX_MODE0)	/* i2c3_scl */
+			OMAP3_CORE1_IOPAD(0x21c4, PIN_INPUT | MUX_MODE0)	/* i2c3_sda */
+		>;
+	};
+
 	tsc2004_pins: pinmux_tsc2004_pins {
 		pinctrl-single,pins = <
 			OMAP3_CORE1_IOPAD(0x2186, PIN_INPUT | MUX_MODE4)	/* mcbsp4_dr.gpio_153 */
@@ -249,18 +263,6 @@
 			OMAP3_WKUP_IOPAD(0x2a0c, PIN_OUTPUT | MUX_MODE4)	/* sys_boot1.gpio_3 */
 		>;
 	};
-	i2c2_pins: pinmux_i2c2_pins {
-		pinctrl-single,pins = <
-			OMAP3_CORE1_IOPAD(0x21be, PIN_INPUT | MUX_MODE0)	/* i2c2_scl */
-			OMAP3_CORE1_IOPAD(0x21c0, PIN_INPUT | MUX_MODE0)	/* i2c2_sda */
-		>;
-	};
-	i2c3_pins: pinmux_i2c3_pins {
-		pinctrl-single,pins = <
-			OMAP3_CORE1_IOPAD(0x21c2, PIN_INPUT | MUX_MODE0)	/* i2c3_scl */
-			OMAP3_CORE1_IOPAD(0x21c4, PIN_INPUT | MUX_MODE0)	/* i2c3_sda */
-		>;
-	};
 };
 
 &omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/logicpd-torpedo-baseboard.dtsi b/arch/arm/boot/dts/logicpd-torpedo-baseboard.dtsi
index 642e809e757a..449cc7616da6 100644
--- a/arch/arm/boot/dts/logicpd-torpedo-baseboard.dtsi
+++ b/arch/arm/boot/dts/logicpd-torpedo-baseboard.dtsi
@@ -108,7 +108,6 @@
 &dss {
 	status = "ok";
 	vdds_dsi-supply = <&vpll2>;
-	vdda_video-supply = <&video_reg>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&dss_dpi_pins1>;
 	port {
@@ -124,44 +123,20 @@
 		display0 = &lcd0;
 	};
 
-	video_reg: video_reg {
-		pinctrl-names = "default";
-		pinctrl-0 = <&panel_pwr_pins>;
-		compatible = "regulator-fixed";
-		regulator-name = "fixed-supply";
-		regulator-min-microvolt = <3300000>;
-		regulator-max-microvolt = <3300000>;
-		gpio = <&gpio5 27 GPIO_ACTIVE_HIGH>;	/* gpio155, lcd INI */
-	};
-
 	lcd0: display {
-		compatible = "panel-dpi";
+		/* This isn't the exact LCD, but the timings meet spec */
+		/* To make it work, set CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK=4 */
+		compatible = "newhaven,nhd-4.3-480272ef-atxl";
 		label = "15";
-		status = "okay";
-		/* default-on; */
 		pinctrl-names = "default";
-
+		pinctrl-0 = <&panel_pwr_pins>;
+		backlight = <&bl>;
+		enable-gpios = <&gpio5 27 GPIO_ACTIVE_HIGH>;
 		port {
 			lcd_in: endpoint {
 				remote-endpoint = <&dpi_out>;
 			};
 		};
-
-		panel-timing {
-			clock-frequency = <9000000>;
-			hactive = <480>;
-			vactive = <272>;
-			hfront-porch = <3>;
-			hback-porch = <2>;
-			hsync-len = <42>;
-			vback-porch = <3>;
-			vfront-porch = <4>;
-			vsync-len = <11>;
-			hsync-active = <0>;
-			vsync-active = <0>;
-			de-active = <1>;
-			pixelclk-active = <1>;
-		};
 	};
 
 	bl: backlight {
diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index c7bf9c493646..64eb896907bf 100644
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -363,6 +363,7 @@ CONFIG_DRM_OMAP_PANEL_TPO_TD028TTEC1=m
 CONFIG_DRM_OMAP_PANEL_TPO_TD043MTEA1=m
 CONFIG_DRM_OMAP_PANEL_NEC_NL8048HL11=m
 CONFIG_DRM_TILCDC=m
+CONFIG_DRM_PANEL_SIMPLE=m
 CONFIG_FB=y
 CONFIG_FIRMWARE_EDID=y
 CONFIG_FB_MODE_HELPERS=y
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index 6c6f8fce854e..d942a3357090 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -491,11 +491,11 @@ static int ti_sysc_clkdm_init(struct device *dev,
 			      struct clk *fck, struct clk *ick,
 			      struct ti_sysc_cookie *cookie)
 {
-	if (fck)
+	if (!IS_ERR(fck))
 		cookie->clkdm = ti_sysc_find_one_clockdomain(fck);
 	if (cookie->clkdm)
 		return 0;
-	if (ick)
+	if (!IS_ERR(ick))
 		cookie->clkdm = ti_sysc_find_one_clockdomain(ick);
 	if (cookie->clkdm)
 		return 0;
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 2db474ab4c6b..364ee498feb3 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -280,9 +280,6 @@ static int sysc_get_one_clock(struct sysc *ddata, const char *name)
 
 	ddata->clocks[index] = devm_clk_get(ddata->dev, name);
 	if (IS_ERR(ddata->clocks[index])) {
-		if (PTR_ERR(ddata->clocks[index]) == -ENOENT)
-			return 0;
-
 		dev_err(ddata->dev, "clock get error for %s: %li\n",
 			name, PTR_ERR(ddata->clocks[index]));
 
@@ -357,7 +354,7 @@ static int sysc_get_clocks(struct sysc *ddata)
 			continue;
 
 		error = sysc_get_one_clock(ddata, name);
-		if (error && error != -ENOENT)
+		if (error)
 			return error;
 	}
 
@@ -1630,17 +1627,19 @@ static int sysc_init_module(struct sysc *ddata)
 	if (error)
 		return error;
 
-	if (manage_clocks) {
-		sysc_clkdm_deny_idle(ddata);
+	sysc_clkdm_deny_idle(ddata);
 
-		error = sysc_enable_opt_clocks(ddata);
-		if (error)
-			return error;
+	/*
+	 * Always enable clocks. The bootloader may or may not have enabled
+	 * the related clocks.
+	 */
+	error = sysc_enable_opt_clocks(ddata);
+	if (error)
+		return error;
 
-		error = sysc_enable_main_clocks(ddata);
-		if (error)
-			goto err_opt_clocks;
-	}
+	error = sysc_enable_main_clocks(ddata);
+	if (error)
+		goto err_opt_clocks;
 
 	if (!(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) {
 		error = sysc_rstctrl_reset_deassert(ddata, true);
@@ -1658,7 +1657,7 @@ static int sysc_init_module(struct sysc *ddata)
 			goto err_main_clocks;
 	}
 
-	if (!ddata->legacy_mode && manage_clocks) {
+	if (!ddata->legacy_mode) {
 		error = sysc_enable_module(ddata->dev);
 		if (error)
 			goto err_main_clocks;
@@ -1675,6 +1674,7 @@ err_main_clocks:
 	if (manage_clocks)
 		sysc_disable_main_clocks(ddata);
 err_opt_clocks:
+	/* No re-enable of clockdomain autoidle to prevent module autoidle */
 	if (manage_clocks) {
 		sysc_disable_opt_clocks(ddata);
 		sysc_clkdm_allow_idle(ddata);
@@ -2355,6 +2355,27 @@ static void ti_sysc_idle(struct work_struct *work)
 
 	ddata = container_of(work, struct sysc, idle_work.work);
 
+	/*
+	 * One time decrement of clock usage counts if left on from init.
+	 * Note that we disable opt clocks unconditionally in this case
+	 * as they are enabled unconditionally during init without
+	 * considering sysc_opt_clks_needed() at that point.
+	 */
+	if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE |
+				 SYSC_QUIRK_NO_IDLE_ON_INIT)) {
+		sysc_disable_main_clocks(ddata);
+		sysc_disable_opt_clocks(ddata);
+		sysc_clkdm_allow_idle(ddata);
+	}
+
+	/* Keep permanent PM runtime usage count for SYSC_QUIRK_NO_IDLE */
+	if (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE)
+		return;
+
+	/*
+	 * Decrement PM runtime usage count for SYSC_QUIRK_NO_IDLE_ON_INIT
+	 * and SYSC_QUIRK_NO_RESET_ON_INIT
+	 */
 	if (pm_runtime_active(ddata->dev))
 		pm_runtime_put_sync(ddata->dev);
 }
@@ -2439,7 +2460,8 @@ static int sysc_probe(struct platform_device *pdev)
 	INIT_DELAYED_WORK(&ddata->idle_work, ti_sysc_idle);
 
 	/* At least earlycon won't survive without deferred idle */
-	if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE_ON_INIT |
+	if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE |
+				 SYSC_QUIRK_NO_IDLE_ON_INIT |
 				 SYSC_QUIRK_NO_RESET_ON_INIT)) {
 		schedule_delayed_work(&ddata->idle_work, 3000);
 	} else {