Merge branches 'for-opinicus/asoc', 'for-opinicus/gpio', 'for-opinicu…

…s/input', 'for-opinicus/leds', 'for-opinicus/pwm', 'for-opinicus/rtc', 'for-opinicus/regulator', 'for-opinicus/serial', 'for-opinicus/fbdev' and 'for-opinicus/hdmi' into opinicus-4.14-0

* for-opinicus/asoc:
  ASoC: sun4i-is: also check for NULL on reset pin request

* for-opinicus/gpio:
  gpio: pca953x: add support for the NXP pca9570

* for-opinicus/input:
  input: edt-ft5x06: force touchscreen to remain active
  input: edt-ft5x06: add polldev as an option
  input: edt-ft5x06: take into account the number of fingers
  input: edt-ft5x06: fix multi-touch handling
  input: edt-ft5x06: sanity check on input
  input: edt-ft5x06: silence deferral error
  input: edt-ft5x06: use less magic and more defines
  input: edt-ft5x06: shorten defines
  input: edt-ft5x06: minor consistency cleanup/line length reduction
  input: edt-ft5x06: fix some whitespace/ident issues
  input: edt-ft5x06: only enable the irq when needed
  input: edt-ft5x06: cleanup headers
  input: edt-ft5x06: add support for the ft5426 controller
  input: edt-ft5x06: group r, w and rw functions
  input: of_touchscreen: add support for minimum sizes
  input: of_touchscreen: rename touchscreen-size-[xy]
  input: of_touchscreen: shorten variable names

* for-opinicus/leds:
  leds: pca963x: set DMBLNK as default during probe
  leds: pca963x: remove whitespace and checkpatch problems
  leds: pca963x: refactor initial led output a little
  leds: pca963x: save mode when setting power_state
  leds: pca963x: add defines and remove some magic values
  leds: pca963x: alphabetize headers
  leds: pca963x: abort probe if device is not connected

* for-opinicus/pwm:
  pwm: core: do not block apply->state on period

* for-opinicus/rtc:
  rtc: sun6i: add missing header

* for-opinicus/regulator:
  power: supply: axp288: use the BIT() macro
  power: supply: axp20x: add missing include bitops.h
  mfd: axp20x: use explicit bit defines
  mfd: axp20x: fixup includes
  regulator: dts: set proper lradc vref on OLinuXino Lime2
  regulator: dts: add full voltage range to LDO4 on the Lime2
  regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
  regulator: axp20x: add software based soft_start for LDO3
  regulator: axp20x: add support for set_ramp_delay
  regulator: core: enable power when setting up constraints
  regulator: axp20x: name voltage ramping define properly
  regulator: axp20x: use defines for masks

* for-opinicus/serial:
  serial: 8250: expand debug ability of the irq handler
  serial: 8250: Only confirm handled interrupts on supported ones
  serial: 8250_dw: Make register access consistent
  serial: 8250_dw: Use serial port assessor wrapper
  serial: 8250: Do not treat the IIR register as a bitfield
  serial: 8250: Minor cleanups
  serial: 8250: Replace asm/irq with linux/irqreturn, linux/interrupt

* for-opinicus/fbdev: (21 commits)
  fbdev: ssd1307fb: Do not always clear the display on boot
  fbdev: ssd1307fb: Limit to support 0 - 180 rotation only
  fbdev: ssd1307fb: Add hardware accelerated rotation support
  fbdev: ssd1307fb: Ensure display is toggled properly
  fbdev: ssd1307fb: Ensure set_par can do bring-up
  fbdev: ssd1307fb: Remove unused forward declaration
  fbdev: ssd1307fb: Reduce magic values with defines
  fbdev: ssd1307fb: Use resolution instead of dimensions
  fbdev: ssd1307fb: cleanup: Group fb_info.fix
  fbdev: ssd1307fb: Use ratelimited error printing
  fbdev: ssd1307fb: Make output a little more consistent
  fbdev: ssd1307fb: Rename i2c device ids
  fbdev: ssd1307fb: Abort probe if we cannot talk to the display
  fbdev: sysfs: Add rotation in degrees support to validation
  fbdev: sysfs: Expand input validation to degree's
  fbdev: sysfs: Input validation
  fbdev: sysfs: Replace simple_strtoul with kstrtoul
  fbdev: sysfs: Sort headers
  fbdev: of: Add parameter to not clear screen on probe
  fbdev: of: Add of parsing helper
  ...

* for-opinicus/hdmi:
  arm/dts: Use hdmi_i2c node on the OLinuXino Lime2
  [WIP-do-not-merge] drm/sunxi: Split off hdmi-i2c as a separated driver
  drm: sun4i: check for i2c busy status
  drm/sun4i: make fifo_transfer more verbose in case of error
  drm/sun4i: i2c: consolidate ddc items
  drm/sun4i: make bool assignment explicit
  drm/sun4i: enable/disable the tmds clock on use
  drm/sun4i: Fix NULL pointer dereference at unbind
  drm/sun4i: improve header readability
  drm/sun4i: Fix Kconfig indenting
  drm/edid: Prevent NULL pointer deref when there is no I2C adapter

Documentation/devicetree/bindings/display/fbdev.txt

@@ -0,0 +1,6 @@
+General framebuffer properties:
+
+Optional properties for framebuffers:
+ - no-clear-on-probe	: Do not clear the framebuffer during probe (bool)
+ - rotate		: rotate a framebuffer over 0, 1, 2 and 3 (or 0, 90,
+			  180 and 270) degree's (integer)

Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt

@@ -50,9 +50,8 @@ Required properties:
     * pll-0: the first video PLL
     * pll-1: the second video PLL
   - clock-names: the clock names mentioned above
+  - clock-output-names: the name of the output clock by the HDMI/TMDS encoder
   - dmas: phandles to the DMA channels used by the HDMI encoder
-    * ddc-tx: The channel for DDC transmission
-    * ddc-rx: The channel for DDC reception
     * audio-tx: The channel used for audio transmission
   - dma-names: the channel names mentioned above
 
@@ -61,6 +60,32 @@ Required properties:
     first port should be the input endpoint. The second should be the
     output, usually to an HDMI connector.
 
+Optional properties:
+  - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
+
+HDMI-I2C bus driver
+-------------------
+
+The HDMI-I2C bus controller is implemented using a reasonably common I2C block
+and can be used as a regular I2C device in a board layout. The only caveat
+however is that the bus timing is dependent on the TMDS clock and thus the
+exact I2C bus frequency may not be achieved.
+
+Required properties:
+  - compatible: value must be one of:
+    * allwinner,sun4i-a10-hdmi-i2c
+    * allwinner,sun6i-a31-hdmi-i2c
+  - reg: base address and size of the memory-mapped region
+  - clocks: phandle to the clock feeding the HDMI-I2C bus controller
+    * hdmi: the HDMI/TMDS peripheral is the input clock, common on sun4i
+    * ddc: a dedicated DDC clock is the input clock, common on sun6i
+  - dmas: phandles to the DMA channels used by the HDMI-I2C bus controller
+    * ddc-tx: The channel for DDC transmission
+    * ddc-rx: The channel for DDC reception
+
+Optional properties:
+  - clock-frequency: see the common i2c binding document
+
 TV Encoder
 ----------
 
@@ -277,16 +302,16 @@ connector {
 
 hdmi: hdmi@01c16000 {
 	compatible = "allwinner,sun5i-a10s-hdmi";
-	reg = <0x01c16000 0x1000>;
+	reg = <0x01c16000 0x500>;
 	interrupts = <58>;
 	clocks = <&ccu CLK_AHB_HDMI>, <&ccu CLK_HDMI>,
 		 <&ccu CLK_PLL_VIDEO0_2X>,
 		 <&ccu CLK_PLL_VIDEO1_2X>;
 	clock-names = "ahb", "mod", "pll-0", "pll-1";
-	dmas = <&dma SUN4I_DMA_NORMAL 16>,
-	       <&dma SUN4I_DMA_NORMAL 16>,
-	       <&dma SUN4I_DMA_DEDICATED 24>;
-	dma-names = "ddc-tx", "ddc-rx", "audio-tx";
+	clock-output-names = "hdmi-tmds";
+	ddc-i2c-bus = <&hdmi_i2c>;
+	dmas = <&dma SUN4I_DMA_DEDICATED 24>;
+	dma-names = "audio-tx";
 
 	ports {
 		#address-cells = <1>;
@@ -314,6 +339,19 @@ hdmi: hdmi@01c16000 {
 	};
 };
 
+hdmi_i2c: i2c@16500 {
+	compatible = "allwinner,sun7i-a20-hdmi-i2c",
+		     "allwinner,sun4i-a10-hdmi-i2c";
+	reg = <0x01c16500 0x40>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	clocks = <&hdmi>;
+	dmas = <&dma SUN4I_DMA_NORMAL 16>,
+	       <&dma SUN4I_DMA_NORMAL 16>,
+	dma-names = "ddc-tx", "ddc-rx";
+	status = "disabled";
+};
+
 tve0: tv-encoder@01c0a000 {
 	compatible = "allwinner,sun4i-a10-tv-encoder";
 	reg = <0x01c0a000 0x1000>;

Documentation/devicetree/bindings/gpio/gpio-pca953x.txt

@@ -13,6 +13,7 @@ Required properties:
 	nxp,pca9555
 	nxp,pca9556
 	nxp,pca9557
+	nxp,pca9570
 	nxp,pca9574
 	nxp,pca9575
 	nxp,pca9698

Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt

@@ -18,16 +18,17 @@ Required properties:
  - compatible:  "edt,edt-ft5206"
            or:  "edt,edt-ft5306"
            or:  "edt,edt-ft5406"
+           or:  "edt,edt-ft5426"
            or:  "edt,edt-ft5506"
            or:  "focaltech,ft6236"
 
  - reg:         I2C slave address of the chip (0x38)
+
+Optional properties:
  - interrupt-parent: a phandle pointing to the interrupt controller
                      serving the interrupt for this chip
  - interrupts:       interrupt specification for the touchdetect
                      interrupt
-
-Optional properties:
  - reset-gpios: GPIO specification for the RESET input
  - wake-gpios:  GPIO specification for the WAKE input
 
@@ -44,6 +45,7 @@ Optional properties:
 
  - offset:      allows setting the edge compensation in the range from
                 0 to 31.
+ - poll-interval: Poll interval time in milliseconds
  - touchscreen-size-x	   : See touchscreen.txt
  - touchscreen-size-y	   : See touchscreen.txt
  - touchscreen-fuzz-x      : See touchscreen.txt

Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt

@@ -1,10 +1,14 @@
 General Touchscreen Properties:
 
 Optional properties for Touchscreens:
- - touchscreen-size-x		: horizontal resolution of touchscreen
-				  (in pixels)
- - touchscreen-size-y		: vertical resolution of touchscreen
-				  (in pixels)
+ - touchscreen-min-size-x	: minimal reported horizontal resolution of
+				  touchscreen (in pixels)
+ - touchscreen-min-size-y	: minimal reported vertical resolution of
+				  touchscreen (in pixels)
+ - touchscreen-max-size-x	: maximal reported horizontal resolution of
+				  touchscreen (in pixels)
+ - touchscreen-max-size-y	: maximal reported vertical resolution of touchscreen
+				  touchscreen (in pixels)
  - touchscreen-max-pressure	: maximum reported pressure (arbitrary range
 				  dependent on the controller)
  - touchscreen-fuzz-x		: horizontal noise value of the absolute input
@@ -25,6 +29,8 @@ Optional properties for Touchscreens:
  - touchscreen-y-mm		: vertical length in mm of the touchscreen
 
 Deprecated properties for Touchscreens:
+ - touchscreen-size-x		: deprecated name for touchscreen-size-x
+ - touchscreen-size-y		: deprecated name for touchscreen-size-y
  - x-size			: deprecated name for touchscreen-size-x
  - y-size			: deprecated name for touchscreen-size-y
  - moving-threshold		: deprecated name for a combination of

Documentation/devicetree/bindings/mfd/axp20x.txt

@@ -33,6 +33,14 @@ Required properties:
 - interrupt-controller: The PMIC has its own internal IRQs
 - #interrupt-cells: Should be set to 1
 
+Supported common regulator properties, see regulator.txt for more information:
+- regulator-ramp-delay: sets the ramp up delay in uV/us
+			AXP20x/DCDC2: 1600, 800
+			AXP20x/LDO3:  1600, 800
+- regulator-soft-start:	enable the output at the lowest possible voltage and
+			only then set the desired voltage
+			AXP20x/LDO3
+
 Optional properties:
 - x-powers,dcdc-freq: defines the work frequency of DC-DC in KHz
 		      AXP152/20X: range:  750-1875, Default: 1.5 MHz

arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts

@@ -121,6 +121,12 @@
 };
 
 &hdmi {
+	ddc-i2c-bus = <&hdmi_i2c>;
+	status = "okay";
+};
+
+&hdmi_i2c {
+	clock-frequency = <100000>;
 	status = "okay";
 };
 
@@ -154,6 +160,10 @@
 	};
 };
 
+&lradc {
+	vref-supply = <&reg_vcc3v0>;
+};
+
 &mmc0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc0_pins_a>;
@@ -246,12 +256,15 @@
 	regulator-min-microvolt = <2800000>;
 	regulator-max-microvolt = <2800000>;
 	regulator-name = "vddio-csi0";
+	regulator-soft-start;
+	regulator-ramp-delay = <1600>;
 };
 
 &reg_ldo4 {
-	regulator-min-microvolt = <2800000>;
-	regulator-max-microvolt = <2800000>;
-	regulator-name = "vddio-csi1";
+	regulator-always-on;
+	regulator-min-microvolt = <1250000>;
+	regulator-max-microvolt = <3300000>;
+	regulator-name = "vdd-io-pg";
 };
 
 &reg_usb0_vbus {

arch/arm/boot/dts/sun7i-a20.dtsi

@@ -575,16 +575,16 @@
 		hdmi: hdmi@1c16000 {
 			compatible = "allwinner,sun7i-a20-hdmi",
 				     "allwinner,sun5i-a10s-hdmi";
-			reg = <0x01c16000 0x1000>;
+			reg = <0x01c16000 0x500>;
 			interrupts = <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&ccu CLK_AHB_HDMI0>, <&ccu CLK_HDMI>,
 				 <&ccu CLK_PLL_VIDEO0_2X>,
 				 <&ccu CLK_PLL_VIDEO1_2X>;
 			clock-names = "ahb", "mod", "pll-0", "pll-1";
-			dmas = <&dma SUN4I_DMA_NORMAL 16>,
-			       <&dma SUN4I_DMA_NORMAL 16>,
-			       <&dma SUN4I_DMA_DEDICATED 24>;
-			dma-names = "ddc-tx", "ddc-rx", "audio-tx";
+			#clock-cells = <0>;
+			clock-output-names = "hdmi-tmds";
+			dmas = <&dma SUN4I_DMA_DEDICATED 24>;
+			dma-names = "audio-tx";
 			status = "disabled";
 
 			ports {
@@ -615,6 +615,19 @@
 			};
 		};
 
+		hdmi_i2c: i2c@16500 {
+			compatible = "allwinner,sun7i-a20-hdmi-i2c",
+				     "allwinner,sun4i-a10-hdmi-i2c";
+			reg = <0x01c16500 0x40>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&hdmi>;
+			dmas = <&dma SUN4I_DMA_NORMAL 16>,
+			       <&dma SUN4I_DMA_NORMAL 16>;
+			dma-names = "ddc-tx", "ddc-rx";
+			status = "disabled";
+		};
+
 		spi2: spi@1c17000 {
 			compatible = "allwinner,sun4i-a10-spi";
 			reg = <0x01c17000 0x1000>;

drivers/gpio/gpio-pca953x.c

@@ -66,6 +66,7 @@ static const struct i2c_device_id pca953x_id[] = {
 	{ "pca9555", 16 | PCA953X_TYPE | PCA_INT, },
 	{ "pca9556", 8  | PCA953X_TYPE, },
 	{ "pca9557", 8  | PCA953X_TYPE, },
+	{ "pca9570", 4  | PCA957X_TYPE, },
 	{ "pca9574", 8  | PCA957X_TYPE | PCA_INT, },
 	{ "pca9575", 16 | PCA957X_TYPE | PCA_INT, },
 	{ "pca9698", 40 | PCA953X_TYPE, },
@@ -931,6 +932,7 @@ static const struct of_device_id pca953x_dt_ids[] = {
 	{ .compatible = "nxp,pca9555", .data = OF_953X(16, PCA_INT), },
 	{ .compatible = "nxp,pca9556", .data = OF_953X( 8, 0), },
 	{ .compatible = "nxp,pca9557", .data = OF_953X( 8, 0), },
+	{ .compatible = "nxp,pca9570", .data = OF_957X( 4, 0), },
 	{ .compatible = "nxp,pca9574", .data = OF_957X( 8, PCA_INT), },
 	{ .compatible = "nxp,pca9575", .data = OF_957X(16, PCA_INT), },
 	{ .compatible = "nxp,pca9698", .data = OF_953X(40, 0), },

drivers/gpu/drm/drm_edid.c

@@ -1451,6 +1451,9 @@ drm_do_probe_ddc_edid(void *data, u8 *buf, unsigned int block, size_t len)
 	unsigned char xfers = segment ? 3 : 2;
 	int ret, retries = 5;
 
+	if (!adapter)
+		return -ENODEV;
+
 	/*
 	 * The core I2C driver will automatically retry the transfer if the
 	 * adapter reports EAGAIN. However, we find that bit-banging transfers

drivers/gpu/drm/sun4i/Kconfig

@@ -16,18 +16,26 @@ config DRM_SUN4I
 if DRM_SUN4I
 
 config DRM_SUN4I_HDMI
-       tristate "Allwinner A10 HDMI Controller Support"
-       default DRM_SUN4I
-       help
+	tristate "Allwinner A10 HDMI Controller Support"
+	default DRM_SUN4I
+	help
 	  Choose this option if you have an Allwinner SoC with an HDMI
 	  controller.
 
+config I2C_SUN4I_HDMI
+	tristate "Allwinner A10 HDMI I2C Support"
+	depends on DRM_SUN4I_HDMI
+	select I2C
+	help
+	  Choose this option if you have an Allwinner SoC with an I2C
+	  enabled HDMI controller and want to enable the I2C channel.
+
 config DRM_SUN4I_HDMI_CEC
-       bool "Allwinner A10 HDMI CEC Support"
-       depends on DRM_SUN4I_HDMI
-       select CEC_CORE
-       select CEC_PIN
-       help
+	bool "Allwinner A10 HDMI CEC Support"
+	depends on DRM_SUN4I_HDMI
+	select CEC_CORE
+	select CEC_PIN
+	help
 	  Choose this option if you have an Allwinner SoC with an HDMI
 	  controller and want to use CEC.
 

drivers/gpu/drm/sun4i/Makefile

@@ -4,9 +4,11 @@ sun4i-backend-y			+= sun4i_backend.o sun4i_layer.o
 sun4i-drm-y			+= sun4i_drv.o
 sun4i-drm-y			+= sun4i_framebuffer.o
 
-sun4i-drm-hdmi-y		+= sun4i_hdmi_ddc_clk.o
+sun4i-hdmi-i2c-y		+= sun4i_hdmi_i2c_drv.o sun4i_hdmi_ddc_clk.o
+sun4i-hdmi-i2c-y		+= sun4i_hdmi_i2c.o
+
+sun4i-drm-hdmi-y		+= sun4i_hdmi_i2c_drv.o sun4i_hdmi_ddc_clk.o
 sun4i-drm-hdmi-y		+= sun4i_hdmi_enc.o
-sun4i-drm-hdmi-y		+= sun4i_hdmi_i2c.o
 sun4i-drm-hdmi-y		+= sun4i_hdmi_tmds_clk.o
 
 sun8i-mixer-y			+= sun8i_mixer.o sun8i_layer.o
@@ -24,3 +26,5 @@ obj-$(CONFIG_DRM_SUN4I)		+= sun6i_drc.o
 obj-$(CONFIG_DRM_SUN4I_BACKEND)	+= sun4i-backend.o
 obj-$(CONFIG_DRM_SUN4I_HDMI)	+= sun4i-drm-hdmi.o
 obj-$(CONFIG_DRM_SUN8I_MIXER)	+= sun8i-mixer.o
+
+obj-$(CONFIG_I2C_SUN4I_HDMI)	+= sun4i-hdmi-i2c.o

drivers/gpu/drm/sun4i/sun4i_drv.c

@@ -140,6 +140,8 @@ static int sun4i_drv_bind(struct device *dev)
 	if (ret)
 		goto finish_poll;
 
+	dev_set_drvdata(dev, drm);
+
 	return 0;
 
 finish_poll: