pinctrl-tz1090: add TZ1090 pinctrl driver

Add a pin control driver for the main pins on the TZ1090 SoC. This
doesn't include the low-power pins as they're controlled separately via
the Powerdown Controller (PDC) registers.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

4 files changed, 2316 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt
new file mode 100644
index 000000000000..39bfd9cd6bba
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt
@@ -0,0 +1,232 @@
+ImgTec TZ1090 pin controller
+
+Required properties:
+- compatible: "img,tz1090-pinctrl"
+- reg: Should contain the register physical address and length of the pad
+  configuration registers (CR_PADS_* and CR_IF_CTL0).
+
+Please refer to pinctrl-bindings.txt in this directory for details of the
+common pinctrl bindings used by client devices, including the meaning of the
+phrase "pin configuration node".
+
+TZ1090's pin configuration nodes act as a container for an abitrary number of
+subnodes. Each of these subnodes represents some desired configuration for a
+pin, a group, or a list of pins or groups. This configuration can include the
+mux function to select on those pin(s)/group(s), and various pin configuration
+parameters, such as pull-up, drive strength, etc.
+
+The name of each subnode is not important; all subnodes should be enumerated
+and processed purely based on their content.
+
+Each subnode only affects those parameters that are explicitly listed. In
+other words, a subnode that lists a mux function but no pin configuration
+parameters implies no information about any pin configuration parameters.
+Similarly, a pin subnode that describes a pullup parameter implies no
+information about e.g. the mux function. For this reason, even seemingly boolean
+values are actually tristates in this binding: unspecified, off, or on.
+Unspecified is represented as an absent property, and off/on are represented as
+integer values 0 and 1.
+
+Required subnode-properties:
+- tz1090,pins : An array of strings. Each string contains the name of a pin or
+  group. Valid values for these names are listed below.
+
+Optional subnode-properties:
+- tz1090,function: A string containing the name of the function to mux to the
+  pin or group. Valid values for function names are listed below, including
+  which pingroups can be muxed to them.
+- supported generic pinconfig properties (for further details see
+  Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt):
+  - bias-disable
+  - bias-high-impedance
+  - bias-bus-hold
+  - bias-pull-up
+  - bias-pull-down
+  - input-schmitt-enable
+  - input-schmitt-disable
+  - slew-rate: Integer, control slew rate of pins.
+      0: slow (half frequency)
+      1: fast
+  - drive-strength: Integer, control drive strength of pins in mA.
+      2: 2mA
+      4: 4mA
+      8: 8mA
+      12: 12mA
+
+
+Note that many of these properties are only valid for certain specific pins
+or groups. See the TZ1090 TRM for complete details regarding which groups
+support which functionality. The Linux pinctrl driver may also be a useful
+reference.
+
+Valid values for pin and group names are:
+
+  gpio pins:
+
+    These all support bias-high-impediance, bias-pull-up, bias-pull-down, and
+    bias-bus-hold (which can also be provided to any of the groups below to set
+    it for all pins in that group).
+
+    They also all support the some form of muxing. Any pins which are contained
+    in one of the mux groups (see below) can be muxed only to the functions
+    supported by the mux group. All other pins can be muxed to the "perip"
+    function which which enables them with their intended peripheral.
+
+    Different pins in the same mux group cannot be muxed to different functions,
+    however it is possible to mux only a subset of the pins in a mux group to a
+    particular function and leave the remaining pins unmuxed. This is useful if
+    the board connects certain pins in a group to other devices to be controlled
+    by GPIO, and you don't want the usual peripheral to have any control of the
+    pin.
+
+    ant_sel0, ant_sel1, gain0, gain1, gain2, gain3, gain4, gain5, gain6, gain7,
+    i2s_bclk_out, i2s_din, i2s_dout0, i2s_dout1, i2s_dout2, i2s_lrclk_out,
+    i2s_mclk, pa_on, pdm_a, pdm_b, pdm_c, pdm_d, pll_on, rx_hp, rx_on,
+    scb0_sclk, scb0_sdat, scb1_sclk, scb1_sdat, scb2_sclk, scb2_sdat, sdh_cd,
+    sdh_clk_in, sdh_wp, sdio_clk, sdio_cmd, sdio_d0, sdio_d1, sdio_d2, sdio_d3,
+    spi0_cs0, spi0_cs1, spi0_cs2, spi0_din, spi0_dout, spi0_mclk, spi1_cs0,
+    spi1_cs1, spi1_cs2, spi1_din, spi1_dout, spi1_mclk, tft_blank_ls, tft_blue0,
+    tft_blue1, tft_blue2, tft_blue3, tft_blue4, tft_blue5, tft_blue6, tft_blue7,
+    tft_green0, tft_green1, tft_green2, tft_green3, tft_green4, tft_green5,
+    tft_green6, tft_green7, tft_hsync_nr, tft_panelclk, tft_pwrsave, tft_red0,
+    tft_red1, tft_red2, tft_red3, tft_red4, tft_red5, tft_red6, tft_red7,
+    tft_vd12acb, tft_vdden_gd, tft_vsync_ns, tx_on, uart0_cts, uart0_rts,
+    uart0_rxd, uart0_txd, uart1_rxd, uart1_txd.
+
+        bias-high-impediance:  supported.
+        bias-pull-up:          supported.
+        bias-pull-down:        supported.
+        bias-bus-hold:         supported.
+        function:              perip or those supported by pin's mux group.
+
+  other pins:
+
+    These other pins are part of various pin groups below, but can't be
+    controlled as GPIOs. They do however support bias-high-impediance,
+    bias-pull-up, bias-pull-down, and bias-bus-hold (which can also be provided
+    to any of the groups below to set it for all pins in that group).
+
+    clk_out0, clk_out1, tck, tdi, tdo, tms, trst.
+
+        bias-high-impediance:  supported.
+        bias-pull-up:          supported.
+        bias-pull-down:        supported.
+        bias-bus-hold:         supported.
+
+  mux groups:
+
+    These all support function, and some support drive configs.
+
+    afe
+        pins:                  tx_on, rx_on, pll_on, pa_on, rx_hp, ant_sel0,
+                               ant_sel1, gain0, gain1, gain2, gain3, gain4,
+                               gain5, gain6, gain7.
+        function:              afe, ts_out_0.
+        input-schmitt-enable:  supported.
+        input-schmitt-disable: supported.
+        slew-rate:             supported.
+        drive-strength:        supported.
+    pdm_d
+        pins:                  pdm_d.
+        function:              pdm_dac, usb_vbus.
+    sdh
+        pins:                  sdh_cd, sdh_wp, sdh_clk_in.
+        function:              sdh, sdio.
+    sdio
+        pins:                  sdio_clk, sdio_cmd, sdio_d0, sdio_d1, sdio_d2,
+                               sdio_d3.
+        function:              sdio, sdh.
+    spi1_cs2
+        pins:                  spi1_cs2.
+        function:              spi1_cs2, usb_vbus.
+    tft
+        pins:                  tft_red0, tft_red1, tft_red2, tft_red3,
+                               tft_red4, tft_red5, tft_red6, tft_red7,
+                               tft_green0, tft_green1, tft_green2, tft_green3,
+                               tft_green4, tft_green5, tft_green6, tft_green7,
+                               tft_blue0, tft_blue1, tft_blue2, tft_blue3,
+                               tft_blue4, tft_blue5, tft_blue6, tft_blue7,
+                               tft_vdden_gd, tft_panelclk, tft_blank_ls,
+                               tft_vsync_ns, tft_hsync_nr, tft_vd12acb,
+                               tft_pwrsave.
+        function:              tft, ext_dac, not_iqadc_stb, iqdac_stb, ts_out_1,
+                               lcd_trace, phy_ringosc.
+        input-schmitt-enable:  supported.
+        input-schmitt-disable: supported.
+        slew-rate:             supported.
+        drive-strength:        supported.
+
+  drive groups:
+
+    These all support input-schmitt-enable, input-schmitt-disable, slew-rate,
+    and drive-strength.
+
+    jtag
+        pins:   tck, trst, tdi, tdo, tms.
+    scb1
+        pins:   scb1_sdat, scb1_sclk.
+    scb2
+        pins:   scb2_sdat, scb2_sclk.
+    spi0
+        pins:   spi0_mclk, spi0_cs0, spi0_cs1, spi0_cs2, spi0_dout, spi0_din.
+    spi1
+        pins:   spi1_mclk, spi1_cs0, spi1_cs1, spi1_cs2, spi1_dout, spi1_din.
+    uart
+        pins:   uart0_txd, uart0_rxd, uart0_rts, uart0_cts,
+                uart1_txd, uart1_rxd.
+    drive_i2s
+        pins:   clk_out1, i2s_din, i2s_dout0, i2s_dout1, i2s_dout2,
+                i2s_lrclk_out, i2s_bclk_out, i2s_mclk.
+    drive_pdm
+        pins:   clk_out0, pdm_b, pdm_a.
+    drive_scb0
+        pins:   scb0_sclk, scb0_sdat, pdm_d, pdm_c.
+    drive_sdio
+        pins:   sdio_clk, sdio_cmd, sdio_d0, sdio_d1, sdio_d2, sdio_d3,
+                sdh_wp, sdh_cd, sdh_clk_in.
+
+  convenience groups:
+
+    These are just convenient groupings of pins and don't support any drive
+    configs.
+
+    uart0
+        pins:   uart0_cts, uart0_rts, uart0_rxd, uart0_txd.
+    uart1
+        pins:   uart1_rxd, uart1_txd.
+    scb0
+        pins:   scb0_sclk, scb0_sdat.
+    i2s
+        pins:   i2s_bclk_out, i2s_din, i2s_dout0, i2s_dout1, i2s_dout2,
+                i2s_lrclk_out, i2s_mclk.
+
+Example:
+
+	pinctrl: pinctrl@02005800 {
+		#gpio-range-cells = <3>;
+		compatible = "img,tz1090-pinctrl";
+		reg = <0x02005800 0xe4>;
+	};
+
+Example board file extract:
+
+	&pinctrl {
+		uart0_default: uart0 {
+			uart0_cfg {
+				tz1090,pins =	"uart0_rxd",
+						"uart0_txd";
+				tz1090,function = "perip";
+			};
+		};
+		tft_default: tft {
+			tft_cfg {
+				tz1090,pins =	"tft";
+				tz1090,function = "tft";
+			};
+		};
+	};
+
+	uart@02004b00 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&uart0_default>;
+	};
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index e01976fb1175..acdaa08b325c 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -212,6 +212,12 @@ config PINCTRL_TEGRA114
 	bool
 	select PINCTRL_TEGRA
 
+config PINCTRL_TZ1090
+	bool "Toumaz Xenif TZ1090 pin control driver"
+	depends on SOC_TZ1090
+	select PINMUX
+	select GENERIC_PINCONF
+
 config PINCTRL_U300
 	bool "U300 pin controller driver"
 	depends on ARCH_U300
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 9031afddb9ad..37ff29e1bba3 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_PINCTRL_TEGRA)	+= pinctrl-tegra.o
 obj-$(CONFIG_PINCTRL_TEGRA20)	+= pinctrl-tegra20.o
 obj-$(CONFIG_PINCTRL_TEGRA30)	+= pinctrl-tegra30.o
 obj-$(CONFIG_PINCTRL_TEGRA114)	+= pinctrl-tegra114.o
+obj-$(CONFIG_PINCTRL_TZ1090)	+= pinctrl-tz1090.o
 obj-$(CONFIG_PINCTRL_U300)	+= pinctrl-u300.o
 obj-$(CONFIG_PINCTRL_COH901)	+= pinctrl-coh901.o
 obj-$(CONFIG_PINCTRL_SAMSUNG)	+= pinctrl-samsung.o
diff --git a/drivers/pinctrl/pinctrl-tz1090.c b/drivers/pinctrl/pinctrl-tz1090.c
new file mode 100644
index 000000000000..02ff3a238168
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-tz1090.c
@@ -0,0 +1,2077 @@
+/*
+ * Pinctrl driver for the Toumaz Xenif TZ1090 SoC
+ *
+ * Copyright (c) 2013, Imagination Technologies Ltd.
+ *
+ * Derived from Tegra code:
+ * Copyright (c) 2011-2012, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Derived from code:
+ * Copyright (C) 2010 Google, Inc.
+ * Copyright (C) 2010 NVIDIA Corporation
+ * Copyright (C) 2009-2011 ST-Ericsson AB
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
+/*
+ * The registers may be shared with other threads/cores, so we need to use the
+ * metag global lock2 for atomicity.
+ */
+#include <asm/global_lock.h>
+
+#include "core.h"
+#include "pinconf.h"
+
+/* Register offsets from bank base address */
+#define REG_PINCTRL_SELECT	0x10
+#define REG_PINCTRL_SCHMITT	0x90
+#define REG_PINCTRL_PU_PD	0xa0
+#define REG_PINCTRL_SR		0xc0
+#define REG_PINCTRL_DR		0xd0
+#define REG_PINCTRL_IF_CTL	0xe0
+
+/* REG_PINCTRL_PU_PD field values */
+#define REG_PU_PD_TRISTATE	0
+#define REG_PU_PD_UP		1
+#define REG_PU_PD_DOWN		2
+#define REG_PU_PD_REPEATER	3
+
+/* REG_PINCTRL_DR field values */
+#define REG_DR_2mA		0
+#define REG_DR_4mA		1
+#define REG_DR_8mA		2
+#define REG_DR_12mA		3
+
+/**
+ * struct tz1090_function - TZ1090 pinctrl mux function
+ * @name:	The name of the function, exported to pinctrl core.
+ * @groups:	An array of pin groups that may select this function.
+ * @ngroups:	The number of entries in @groups.
+ */
+struct tz1090_function {
+	const char		*name;
+	const char * const	*groups;
+	unsigned int		ngroups;
+};
+
+/**
+ * struct tz1090_muxdesc - TZ1090 individual mux description
+ * @funcs:	Function for each mux value.
+ * @reg:	Mux register offset. 0 if unsupported.
+ * @bit:	Mux register bit. 0 if unsupported.
+ * @width:	Mux field width. 0 if unsupported.
+ *
+ * A representation of a group of signals (possibly just one signal) in the
+ * TZ1090 which can be muxed to a set of functions or sub muxes.
+ */
+struct tz1090_muxdesc {
+	int	funcs[5];
+	u16	reg;
+	u8	bit;
+	u8	width;
+};
+
+/**
+ * struct tz1090_pingroup - TZ1090 pin group
+ * @name:	Name of pin group.
+ * @pins:	Array of pin numbers in this pin group.
+ * @npins:	Number of pins in this pin group.
+ * @mux:	Top level mux.
+ * @drv:	Drive control supported, 0 if unsupported.
+ *		This means Schmitt, Slew, and Drive strength.
+ * @slw_bit:	Slew register bit. 0 if unsupported.
+ *		The same bit is used for Schmitt, and Drive (*2).
+ * @func:	Currently muxed function.
+ * @func_count:	Number of pins using current mux function.
+ *
+ * A representation of a group of pins (possibly just one pin) in the TZ1090
+ * pin controller. Each group allows some parameter or parameters to be
+ * configured. The most common is mux function selection.
+ */
+struct tz1090_pingroup {
+	const char		*name;
+	const unsigned int	*pins;
+	unsigned int		npins;
+	struct tz1090_muxdesc	mux;
+
+	bool			drv;
+	u8			slw_bit;
+
+	int			func;
+	unsigned int		func_count;
+};
+
+/*
+ * Most pins affected by the pinmux can also be GPIOs. Define these first.
+ * These must match how the GPIO driver names/numbers its pins.
+ */
+
+enum tz1090_pin {
+	/* GPIO pins */
+	TZ1090_PIN_SDIO_CLK,
+	TZ1090_PIN_SDIO_CMD,
+	TZ1090_PIN_SDIO_D0,
+	TZ1090_PIN_SDIO_D1,
+	TZ1090_PIN_SDIO_D2,
+	TZ1090_PIN_SDIO_D3,
+	TZ1090_PIN_SDH_CD,
+	TZ1090_PIN_SDH_WP,
+	TZ1090_PIN_SPI0_MCLK,
+	TZ1090_PIN_SPI0_CS0,
+	TZ1090_PIN_SPI0_CS1,
+	TZ1090_PIN_SPI0_CS2,
+	TZ1090_PIN_SPI0_DOUT,
+	TZ1090_PIN_SPI0_DIN,
+	TZ1090_PIN_SPI1_MCLK,
+	TZ1090_PIN_SPI1_CS0,
+	TZ1090_PIN_SPI1_CS1,
+	TZ1090_PIN_SPI1_CS2,
+	TZ1090_PIN_SPI1_DOUT,
+	TZ1090_PIN_SPI1_DIN,
+	TZ1090_PIN_UART0_RXD,
+	TZ1090_PIN_UART0_TXD,
+	TZ1090_PIN_UART0_CTS,
+	TZ1090_PIN_UART0_RTS,
+	TZ1090_PIN_UART1_RXD,
+	TZ1090_PIN_UART1_TXD,
+	TZ1090_PIN_SCB0_SDAT,
+	TZ1090_PIN_SCB0_SCLK,
+	TZ1090_PIN_SCB1_SDAT,
+	TZ1090_PIN_SCB1_SCLK,
+	TZ1090_PIN_SCB2_SDAT,
+	TZ1090_PIN_SCB2_SCLK,
+	TZ1090_PIN_I2S_MCLK,
+	TZ1090_PIN_I2S_BCLK_OUT,
+	TZ1090_PIN_I2S_LRCLK_OUT,
+	TZ1090_PIN_I2S_DOUT0,
+	TZ1090_PIN_I2S_DOUT1,
+	TZ1090_PIN_I2S_DOUT2,
+	TZ1090_PIN_I2S_DIN,
+	TZ1090_PIN_PDM_A,
+	TZ1090_PIN_PDM_B,
+	TZ1090_PIN_PDM_C,
+	TZ1090_PIN_PDM_D,
+	TZ1090_PIN_TFT_RED0,
+	TZ1090_PIN_TFT_RED1,
+	TZ1090_PIN_TFT_RED2,
+	TZ1090_PIN_TFT_RED3,
+	TZ1090_PIN_TFT_RED4,
+	TZ1090_PIN_TFT_RED5,
+	TZ1090_PIN_TFT_RED6,
+	TZ1090_PIN_TFT_RED7,
+	TZ1090_PIN_TFT_GREEN0,
+	TZ1090_PIN_TFT_GREEN1,
+	TZ1090_PIN_TFT_GREEN2,
+	TZ1090_PIN_TFT_GREEN3,
+	TZ1090_PIN_TFT_GREEN4,
+	TZ1090_PIN_TFT_GREEN5,
+	TZ1090_PIN_TFT_GREEN6,
+	TZ1090_PIN_TFT_GREEN7,
+	TZ1090_PIN_TFT_BLUE0,
+	TZ1090_PIN_TFT_BLUE1,
+	TZ1090_PIN_TFT_BLUE2,
+	TZ1090_PIN_TFT_BLUE3,
+	TZ1090_PIN_TFT_BLUE4,
+	TZ1090_PIN_TFT_BLUE5,
+	TZ1090_PIN_TFT_BLUE6,
+	TZ1090_PIN_TFT_BLUE7,
+	TZ1090_PIN_TFT_VDDEN_GD,
+	TZ1090_PIN_TFT_PANELCLK,
+	TZ1090_PIN_TFT_BLANK_LS,
+	TZ1090_PIN_TFT_VSYNC_NS,
+	TZ1090_PIN_TFT_HSYNC_NR,
+	TZ1090_PIN_TFT_VD12ACB,
+	TZ1090_PIN_TFT_PWRSAVE,
+	TZ1090_PIN_TX_ON,
+	TZ1090_PIN_RX_ON,
+	TZ1090_PIN_PLL_ON,
+	TZ1090_PIN_PA_ON,
+	TZ1090_PIN_RX_HP,
+	TZ1090_PIN_GAIN0,
+	TZ1090_PIN_GAIN1,
+	TZ1090_PIN_GAIN2,
+	TZ1090_PIN_GAIN3,
+	TZ1090_PIN_GAIN4,
+	TZ1090_PIN_GAIN5,
+	TZ1090_PIN_GAIN6,
+	TZ1090_PIN_GAIN7,
+	TZ1090_PIN_ANT_SEL0,
+	TZ1090_PIN_ANT_SEL1,
+	TZ1090_PIN_SDH_CLK_IN,
+
+	/* Non-GPIO pins */
+	TZ1090_PIN_TCK,
+	TZ1090_PIN_TRST,
+	TZ1090_PIN_TDI,
+	TZ1090_PIN_TDO,
+	TZ1090_PIN_TMS,
+	TZ1090_PIN_CLK_OUT0,
+	TZ1090_PIN_CLK_OUT1,
+
+	NUM_GPIOS = TZ1090_PIN_TCK,
+};
+
+/* Pin names */
+
+static const struct pinctrl_pin_desc tz1090_pins[] = {
+	/* GPIO pins */
+	PINCTRL_PIN(TZ1090_PIN_SDIO_CLK,	"sdio_clk"),
+	PINCTRL_PIN(TZ1090_PIN_SDIO_CMD,	"sdio_cmd"),
+	PINCTRL_PIN(TZ1090_PIN_SDIO_D0,		"sdio_d0"),
+	PINCTRL_PIN(TZ1090_PIN_SDIO_D1,		"sdio_d1"),
+	PINCTRL_PIN(TZ1090_PIN_SDIO_D2,		"sdio_d2"),
+	PINCTRL_PIN(TZ1090_PIN_SDIO_D3,		"sdio_d3"),
+	PINCTRL_PIN(TZ1090_PIN_SDH_CD,		"sdh_cd"),
+	PINCTRL_PIN(TZ1090_PIN_SDH_WP,		"sdh_wp"),
+	PINCTRL_PIN(TZ1090_PIN_SPI0_MCLK,	"spi0_mclk"),
+	PINCTRL_PIN(TZ1090_PIN_SPI0_CS0,	"spi0_cs0"),
+	PINCTRL_PIN(TZ1090_PIN_SPI0_CS1,	"spi0_cs1"),
+	PINCTRL_PIN(TZ1090_PIN_SPI0_CS2,	"spi0_cs2"),
+	PINCTRL_PIN(TZ1090_PIN_SPI0_DOUT,	"spi0_dout"),
+	PINCTRL_PIN(TZ1090_PIN_SPI0_DIN,	"spi0_din"),
+	PINCTRL_PIN(TZ1090_PIN_SPI1_MCLK,	"spi1_mclk"),
+	PINCTRL_PIN(TZ1090_PIN_SPI1_CS0,	"spi1_cs0"),
+	PINCTRL_PIN(TZ1090_PIN_SPI1_CS1,	"spi1_cs1"),
+	PINCTRL_PIN(TZ1090_PIN_SPI1_CS2,	"spi1_cs2"),
+	PINCTRL_PIN(TZ1090_PIN_SPI1_DOUT,	"spi1_dout"),
+	PINCTRL_PIN(TZ1090_PIN_SPI1_DIN,	"spi1_din"),
+	PINCTRL_PIN(TZ1090_PIN_UART0_RXD,	"uart0_rxd"),
+	PINCTRL_PIN(TZ1090_PIN_UART0_TXD,	"uart0_txd"),
+	PINCTRL_PIN(TZ1090_PIN_UART0_CTS,	"uart0_cts"),
+	PINCTRL_PIN(TZ1090_PIN_UART0_RTS,	"uart0_rts"),
+	PINCTRL_PIN(TZ1090_PIN_UART1_RXD,	"uart1_rxd"),
+	PINCTRL_PIN(TZ1090_PIN_UART1_TXD,	"uart1_txd"),
+	PINCTRL_PIN(TZ1090_PIN_SCB0_SDAT,	"scb0_sdat"),
+	PINCTRL_PIN(TZ1090_PIN_SCB0_SCLK,	"scb0_sclk"),
+	PINCTRL_PIN(TZ1090_PIN_SCB1_SDAT,	"scb1_sdat"),
+	PINCTRL_PIN(TZ1090_PIN_SCB1_SCLK,	"scb1_sclk"),
+	PINCTRL_PIN(TZ1090_PIN_SCB2_SDAT,	"scb2_sdat"),
+	PINCTRL_PIN(TZ1090_PIN_SCB2_SCLK,	"scb2_sclk"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_MCLK,	"i2s_mclk"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_BCLK_OUT,	"i2s_bclk_out"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_LRCLK_OUT,	"i2s_lrclk_out"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_DOUT0,	"i2s_dout0"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_DOUT1,	"i2s_dout1"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_DOUT2,	"i2s_dout2"),
+	PINCTRL_PIN(TZ1090_PIN_I2S_DIN,		"i2s_din"),
+	PINCTRL_PIN(TZ1090_PIN_PDM_A,		"pdm_a"),
+	PINCTRL_PIN(TZ1090_PIN_PDM_B,		"pdm_b"),
+	PINCTRL_PIN(TZ1090_PIN_PDM_C,		"pdm_c"),
+	PINCTRL_PIN(TZ1090_PIN_PDM_D,		"pdm_d"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED0,	"tft_red0"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED1,	"tft_red1"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED2,	"tft_red2"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED3,	"tft_red3"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED4,	"tft_red4"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED5,	"tft_red5"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED6,	"tft_red6"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_RED7,	"tft_red7"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN0,	"tft_green0"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN1,	"tft_green1"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN2,	"tft_green2"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN3,	"tft_green3"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN4,	"tft_green4"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN5,	"tft_green5"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN6,	"tft_green6"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_GREEN7,	"tft_green7"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE0,	"tft_blue0"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE1,	"tft_blue1"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE2,	"tft_blue2"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE3,	"tft_blue3"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE4,	"tft_blue4"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE5,	"tft_blue5"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE6,	"tft_blue6"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLUE7,	"tft_blue7"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_VDDEN_GD,	"tft_vdden_gd"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_PANELCLK,	"tft_panelclk"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_BLANK_LS,	"tft_blank_ls"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_VSYNC_NS,	"tft_vsync_ns"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_HSYNC_NR,	"tft_hsync_nr"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_VD12ACB,	"tft_vd12acb"),
+	PINCTRL_PIN(TZ1090_PIN_TFT_PWRSAVE,	"tft_pwrsave"),
+	PINCTRL_PIN(TZ1090_PIN_TX_ON,		"tx_on"),
+	PINCTRL_PIN(TZ1090_PIN_RX_ON,		"rx_on"),
+	PINCTRL_PIN(TZ1090_PIN_PLL_ON,		"pll_on"),
+	PINCTRL_PIN(TZ1090_PIN_PA_ON,		"pa_on"),
+	PINCTRL_PIN(TZ1090_PIN_RX_HP,		"rx_hp"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN0,		"gain0"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN1,		"gain1"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN2,		"gain2"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN3,		"gain3"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN4,		"gain4"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN5,		"gain5"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN6,		"gain6"),
+	PINCTRL_PIN(TZ1090_PIN_GAIN7,		"gain7"),
+	PINCTRL_PIN(TZ1090_PIN_ANT_SEL0,	"ant_sel0"),
+	PINCTRL_PIN(TZ1090_PIN_ANT_SEL1,	"ant_sel1"),
+	PINCTRL_PIN(TZ1090_PIN_SDH_CLK_IN,	"sdh_clk_in"),
+
+	/* Non-GPIO pins */
+	PINCTRL_PIN(TZ1090_PIN_TCK,		"tck"),
+	PINCTRL_PIN(TZ1090_PIN_TRST,		"trst"),
+	PINCTRL_PIN(TZ1090_PIN_TDI,		"tdi"),
+	PINCTRL_PIN(TZ1090_PIN_TDO,		"tdo"),
+	PINCTRL_PIN(TZ1090_PIN_TMS,		"tms"),
+	PINCTRL_PIN(TZ1090_PIN_CLK_OUT0,	"clk_out0"),
+	PINCTRL_PIN(TZ1090_PIN_CLK_OUT1,	"clk_out1"),
+};
+
+/* Pins in each pin group */
+
+static const unsigned int spi1_cs2_pins[] = {
+	TZ1090_PIN_SPI1_CS2,
+};
+
+static const unsigned int pdm_d_pins[] = {
+	TZ1090_PIN_PDM_D,
+};
+
+static const unsigned int tft_pins[] = {
+	TZ1090_PIN_TFT_RED0,
+	TZ1090_PIN_TFT_RED1,
+	TZ1090_PIN_TFT_RED2,
+	TZ1090_PIN_TFT_RED3,
+	TZ1090_PIN_TFT_RED4,
+	TZ1090_PIN_TFT_RED5,
+	TZ1090_PIN_TFT_RED6,
+	TZ1090_PIN_TFT_RED7,
+	TZ1090_PIN_TFT_GREEN0,
+	TZ1090_PIN_TFT_GREEN1,
+	TZ1090_PIN_TFT_GREEN2,
+	TZ1090_PIN_TFT_GREEN3,
+	TZ1090_PIN_TFT_GREEN4,
+	TZ1090_PIN_TFT_GREEN5,
+	TZ1090_PIN_TFT_GREEN6,
+	TZ1090_PIN_TFT_GREEN7,
+	TZ1090_PIN_TFT_BLUE0,
+	TZ1090_PIN_TFT_BLUE1,
+	TZ1090_PIN_TFT_BLUE2,
+	TZ1090_PIN_TFT_BLUE3,
+	TZ1090_PIN_TFT_BLUE4,
+	TZ1090_PIN_TFT_BLUE5,
+	TZ1090_PIN_TFT_BLUE6,
+	TZ1090_PIN_TFT_BLUE7,
+	TZ1090_PIN_TFT_VDDEN_GD,
+	TZ1090_PIN_TFT_PANELCLK,
+	TZ1090_PIN_TFT_BLANK_LS,
+	TZ1090_PIN_TFT_VSYNC_NS,
+	TZ1090_PIN_TFT_HSYNC_NR,
+	TZ1090_PIN_TFT_VD12ACB,
+	TZ1090_PIN_TFT_PWRSAVE,
+};
+
+static const unsigned int afe_pins[] = {
+	TZ1090_PIN_TX_ON,
+	TZ1090_PIN_RX_ON,
+	TZ1090_PIN_PLL_ON,
+	TZ1090_PIN_PA_ON,
+	TZ1090_PIN_RX_HP,
+	TZ1090_PIN_ANT_SEL0,
+	TZ1090_PIN_ANT_SEL1,
+	TZ1090_PIN_GAIN0,
+	TZ1090_PIN_GAIN1,
+	TZ1090_PIN_GAIN2,
+	TZ1090_PIN_GAIN3,
+	TZ1090_PIN_GAIN4,
+	TZ1090_PIN_GAIN5,
+	TZ1090_PIN_GAIN6,
+	TZ1090_PIN_GAIN7,
+};
+
+static const unsigned int sdio_pins[] = {
+	TZ1090_PIN_SDIO_CLK,
+	TZ1090_PIN_SDIO_CMD,
+	TZ1090_PIN_SDIO_D0,
+	TZ1090_PIN_SDIO_D1,
+	TZ1090_PIN_SDIO_D2,
+	TZ1090_PIN_SDIO_D3,
+};
+
+static const unsigned int sdh_pins[] = {
+	TZ1090_PIN_SDH_CD,
+	TZ1090_PIN_SDH_WP,
+	TZ1090_PIN_SDH_CLK_IN,
+};
+
+static const unsigned int spi0_pins[] = {
+	TZ1090_PIN_SPI0_MCLK,
+	TZ1090_PIN_SPI0_CS0,
+	TZ1090_PIN_SPI0_CS1,
+	TZ1090_PIN_SPI0_CS2,
+	TZ1090_PIN_SPI0_DOUT,
+	TZ1090_PIN_SPI0_DIN,
+};
+
+static const unsigned int spi1_pins[] = {
+	TZ1090_PIN_SPI1_MCLK,
+	TZ1090_PIN_SPI1_CS0,
+	TZ1090_PIN_SPI1_CS1,
+	TZ1090_PIN_SPI1_CS2,
+	TZ1090_PIN_SPI1_DOUT,
+	TZ1090_PIN_SPI1_DIN,
+};
+
+static const unsigned int uart0_pins[] = {
+	TZ1090_PIN_UART0_RTS,
+	TZ1090_PIN_UART0_CTS,
+	TZ1090_PIN_UART0_TXD,
+	TZ1090_PIN_UART0_RXD,
+};
+
+static const unsigned int uart1_pins[] = {
+	TZ1090_PIN_UART1_TXD,
+	TZ1090_PIN_UART1_RXD,
+};
+
+static const unsigned int uart_pins[] = {
+	TZ1090_PIN_UART1_TXD,
+	TZ1090_PIN_UART1_RXD,
+	TZ1090_PIN_UART0_RTS,
+	TZ1090_PIN_UART0_CTS,
+	TZ1090_PIN_UART0_TXD,
+	TZ1090_PIN_UART0_RXD,
+};
+
+static const unsigned int scb0_pins[] = {
+	TZ1090_PIN_SCB0_SDAT,
+	TZ1090_PIN_SCB0_SCLK,
+};
+
+static const unsigned int scb1_pins[] = {
+	TZ1090_PIN_SCB1_SDAT,
+	TZ1090_PIN_SCB1_SCLK,
+};
+
+static const unsigned int scb2_pins[] = {
+	TZ1090_PIN_SCB2_SDAT,
+	TZ1090_PIN_SCB2_SCLK,
+};
+
+static const unsigned int i2s_pins[] = {
+	TZ1090_PIN_I2S_MCLK,
+	TZ1090_PIN_I2S_BCLK_OUT,
+	TZ1090_PIN_I2S_LRCLK_OUT,
+	TZ1090_PIN_I2S_DOUT0,
+	TZ1090_PIN_I2S_DOUT1,
+	TZ1090_PIN_I2S_DOUT2,
+	TZ1090_PIN_I2S_DIN,
+};
+
+static const unsigned int jtag_pins[] = {
+	TZ1090_PIN_TCK,
+	TZ1090_PIN_TRST,
+	TZ1090_PIN_TDI,
+	TZ1090_PIN_TDO,
+	TZ1090_PIN_TMS,
+};
+
+/* Pins in each drive pin group */
+
+static const unsigned int drive_sdio_pins[] = {
+	TZ1090_PIN_SDIO_CLK,
+	TZ1090_PIN_SDIO_CMD,
+	TZ1090_PIN_SDIO_D0,
+	TZ1090_PIN_SDIO_D1,
+	TZ1090_PIN_SDIO_D2,
+	TZ1090_PIN_SDIO_D3,
+	TZ1090_PIN_SDH_WP,
+	TZ1090_PIN_SDH_CD,
+	TZ1090_PIN_SDH_CLK_IN,
+};
+
+static const unsigned int drive_i2s_pins[] = {
+	TZ1090_PIN_CLK_OUT1,
+	TZ1090_PIN_I2S_DIN,
+	TZ1090_PIN_I2S_DOUT0,
+	TZ1090_PIN_I2S_DOUT1,
+	TZ1090_PIN_I2S_DOUT2,
+	TZ1090_PIN_I2S_LRCLK_OUT,
+	TZ1090_PIN_I2S_BCLK_OUT,
+	TZ1090_PIN_I2S_MCLK,
+};
+
+static const unsigned int drive_scb0_pins[] = {
+	TZ1090_PIN_SCB0_SCLK,
+	TZ1090_PIN_SCB0_SDAT,
+	TZ1090_PIN_PDM_D,
+	TZ1090_PIN_PDM_C,
+};
+
+static const unsigned int drive_pdm_pins[] = {
+	TZ1090_PIN_CLK_OUT0,
+	TZ1090_PIN_PDM_B,
+	TZ1090_PIN_PDM_A,
+};
+
+/* Pin groups each function can be muxed to */
+
+/*
+ * The magic "perip" function allows otherwise non-muxing pins to be enabled in
+ * peripheral mode.
+ */
+static const char * const perip_groups[] = {
+	/* non-muxing convenient gpio pingroups */
+	"uart",
+	"uart0",
+	"uart1",
+	"spi0",
+	"spi1",
+	"scb0",
+	"scb1",
+	"scb2",
+	"i2s",
+	/* individual pins not part of a pin mux group */
+	"spi0_mclk",
+	"spi0_cs0",
+	"spi0_cs1",
+	"spi0_cs2",
+	"spi0_dout",
+	"spi0_din",
+	"spi1_mclk",
+	"spi1_cs0",
+	"spi1_cs1",
+	"spi1_dout",
+	"spi1_din",
+	"uart0_rxd",
+	"uart0_txd",
+	"uart0_cts",
+	"uart0_rts",
+	"uart1_rxd",
+	"uart1_txd",
+	"scb0_sdat",
+	"scb0_sclk",
+	"scb1_sdat",
+	"scb1_sclk",
+	"scb2_sdat",
+	"scb2_sclk",
+	"i2s_mclk",
+	"i2s_bclk_out",
+	"i2s_lrclk_out",
+	"i2s_dout0",
+	"i2s_dout1",
+	"i2s_dout2",
+	"i2s_din",
+	"pdm_a",
+	"pdm_b",
+	"pdm_c",
+};
+
+static const char * const sdh_sdio_groups[] = {
+	"sdh",
+	"sdio",
+	/* sdh pins */
+	"sdh_cd",
+	"sdh_wp",
+	"sdh_clk_in",
+	/* sdio pins */
+	"sdio_clk",
+	"sdio_cmd",
+	"sdio_d0",
+	"sdio_d1",
+	"sdio_d2",
+	"sdio_d3",
+};
+
+static const char * const spi1_cs2_groups[] = {
+	"spi1_cs2",
+};
+
+static const char * const pdm_dac_groups[] = {
+	"pdm_d",
+};
+
+static const char * const usb_vbus_groups[] = {
+	"spi1_cs2",
+	"pdm_d",
+};
+
+static const char * const afe_groups[] = {
+	"afe",
+	/* afe pins */
+	"tx_on",
+	"rx_on",
+	"pll_on",
+	"pa_on",
+	"rx_hp",
+	"ant_sel0",
+	"ant_sel1",
+	"gain0",
+	"gain1",
+	"gain2",
+	"gain3",
+	"gain4",
+	"gain5",
+	"gain6",
+	"gain7",
+};
+
+static const char * const tft_groups[] = {
+	"tft",
+	/* tft pins */
+	"tft_red0",
+	"tft_red1",
+	"tft_red2",
+	"tft_red3",
+	"tft_red4",
+	"tft_red5",
+	"tft_red6",
+	"tft_red7",
+	"tft_green0",
+	"tft_green1",
+	"tft_green2",
+	"tft_green3",
+	"tft_green4",
+	"tft_green5",
+	"tft_green6",
+	"tft_green7",
+	"tft_blue0",
+	"tft_blue1",
+	"tft_blue2",
+	"tft_blue3",
+	"tft_blue4",
+	"tft_blue5",
+	"tft_blue6",
+	"tft_blue7",
+	"tft_vdden_gd",
+	"tft_panelclk",
+	"tft_blank_ls",
+	"tft_vsync_ns",
+	"tft_hsync_nr",
+	"tft_vd12acb",
+	"tft_pwrsave",
+};
+
+/* Mux functions that can be used by a mux */
+
+enum tz1090_mux {
+	/* internal placeholder */
+	TZ1090_MUX_NA = -1,
+	/* magic per-non-muxing-GPIO-pin peripheral mode mux */
+	TZ1090_MUX_PERIP,
+	/* SDH/SDIO mux */
+	TZ1090_MUX_SDH,
+	TZ1090_MUX_SDIO,
+	/* USB_VBUS muxes */
+	TZ1090_MUX_SPI1_CS2,
+	TZ1090_MUX_PDM_DAC,
+	TZ1090_MUX_USB_VBUS,
+	/* AFE mux */
+	TZ1090_MUX_AFE,
+	TZ1090_MUX_TS_OUT_0,
+	/* EXT_DAC mux */
+	TZ1090_MUX_DAC,
+	TZ1090_MUX_NOT_IQADC_STB,
+	TZ1090_MUX_IQDAC_STB,
+	/* TFT mux */
+	TZ1090_MUX_TFT,
+	TZ1090_MUX_EXT_DAC,
+	TZ1090_MUX_TS_OUT_1,
+	TZ1090_MUX_LCD_TRACE,
+	TZ1090_MUX_PHY_RINGOSC,
+};
+
+#define FUNCTION(mux, fname, group)			\
+	[(TZ1090_MUX_ ## mux)] = {			\
+		.name = #fname,				\
+		.groups = group##_groups,		\
+		.ngroups = ARRAY_SIZE(group##_groups),	\
+	}
+/* For intermediate functions with submuxes */
+#define NULL_FUNCTION(mux, fname)			\
+	[(TZ1090_MUX_ ## mux)] = {			\
+		.name = #fname,				\
+	}
+
+/* Must correlate with enum tz1090_mux */
+static const struct tz1090_function tz1090_functions[] = {
+	/*	 FUNCTION	function name	pingroups */
+	FUNCTION(PERIP,		perip,		perip),
+	FUNCTION(SDH,		sdh,		sdh_sdio),
+	FUNCTION(SDIO,		sdio,		sdh_sdio),
+	FUNCTION(SPI1_CS2,	spi1_cs2,	spi1_cs2),
+	FUNCTION(PDM_DAC,	pdm_dac,	pdm_dac),
+	FUNCTION(USB_VBUS,	usb_vbus,	usb_vbus),
+	FUNCTION(AFE,		afe,		afe),
+	FUNCTION(TS_OUT_0,	ts_out_0,	afe),
+	FUNCTION(DAC,		ext_dac,	tft),
+	FUNCTION(NOT_IQADC_STB,	not_iqadc_stb,	tft),
+	FUNCTION(IQDAC_STB,	iqdac_stb,	tft),
+	FUNCTION(TFT,		tft,		tft),
+	NULL_FUNCTION(EXT_DAC,	_ext_dac),
+	FUNCTION(TS_OUT_1,	ts_out_1,	tft),
+	FUNCTION(LCD_TRACE,	lcd_trace,	tft),
+	FUNCTION(PHY_RINGOSC,	phy_ringosc,	tft),
+};
+
+/* Sub muxes */
+
+/**
+ * MUX() - Initialise a mux description.
+ * @f0:		Function 0 (TZ1090_MUX_ is prepended, NA for none)
+ * @f1:		Function 1 (TZ1090_MUX_ is prepended, NA for none)
+ * @f2:		Function 2 (TZ1090_MUX_ is prepended, NA for none)
+ * @f3:		Function 3 (TZ1090_MUX_ is prepended, NA for none)
+ * @f4:		Function 4 (TZ1090_MUX_ is prepended, NA for none)
+ * @mux_r:	Mux register (REG_PINCTRL_ is prepended)
+ * @mux_b:	Bit number in register that the mux field begins
+ * @mux_w:	Width of mux field in register
+ */
+#define MUX(f0, f1, f2, f3, f4, mux_r, mux_b, mux_w)		\
+	{							\
+		.funcs = {					\
+			TZ1090_MUX_ ## f0,			\
+			TZ1090_MUX_ ## f1,			\
+			TZ1090_MUX_ ## f2,			\
+			TZ1090_MUX_ ## f3,			\
+			TZ1090_MUX_ ## f4,			\
+		},						\
+		.reg = (REG_PINCTRL_ ## mux_r),			\
+		.bit = (mux_b),					\
+		.width = (mux_w),				\
+	}
+
+/**
+ * DEFINE_SUBMUX() - Defines a submux description separate from a pin group.
+ * @mux:	Mux name (_submux is appended)
+ * @f0:		Function 0 (TZ1090_MUX_ is prepended, NA for none)
+ * @f1:		Function 1 (TZ1090_MUX_ is prepended, NA for none)
+ * @f2:		Function 2 (TZ1090_MUX_ is prepended, NA for none)
+ * @f3:		Function 3 (TZ1090_MUX_ is prepended, NA for none)
+ * @f4:		Function 4 (TZ1090_MUX_ is prepended, NA for none)
+ * @mux_r:	Mux register (REG_PINCTRL_ is prepended)
+ * @mux_b:	Bit number in register that the mux field begins
+ * @mux_w:	Width of mux field in register
+ *
+ * A sub mux is a nested mux that can be bound to a magic function number used
+ * by another mux description. For example value 4 of the top level mux might
+ * correspond to a function which has a submux pointed to in tz1090_submux[].
+ * The outer mux can then take on any function in the top level mux or the
+ * submux, and if a submux function is chosen both muxes are updated to route
+ * the signal from the submux.
+ *
+ * The submux can be defined with DEFINE_SUBMUX and pointed to from
+ * tz1090_submux[] using SUBMUX.
+ */
+#define DEFINE_SUBMUX(mux, f0, f1, f2, f3, f4, mux_r, mux_b, mux_w)	\
+	static struct tz1090_muxdesc mux ## _submux =			\
+		MUX(f0, f1, f2, f3, f4, mux_r, mux_b, mux_w)
+
+/**
+ * SUBMUX() - Link a submux to a function number.
+ * @f:		Function name (TZ1090_MUX_ is prepended)
+ * @submux:	Submux name (_submux is appended)
+ *
+ * For use in tz1090_submux[] initialisation to link an intermediate function
+ * number to a particular submux description. It indicates that when the
+ * function is chosen the signal is connected to the submux.
+ */
+#define SUBMUX(f, submux)	[(TZ1090_MUX_ ## f)] = &(submux ## _submux)
+
+/**
+ * MUX_PG() - Initialise a pin group with mux control
+ * @pg_name:	Pin group name (stringified, _pins appended to get pins array)
+ * @f0:		Function 0 (TZ1090_MUX_ is prepended, NA for none)
+ * @f1:		Function 1 (TZ1090_MUX_ is prepended, NA for none)
+ * @f2:		Function 2 (TZ1090_MUX_ is prepended, NA for none)
+ * @f3:		Function 3 (TZ1090_MUX_ is prepended, NA for none)
+ * @f4:		Function 4 (TZ1090_MUX_ is prepended, NA for none)
+ * @mux_r:	Mux register (REG_PINCTRL_ is prepended)
+ * @mux_b:	Bit number in register that the mux field begins
+ * @mux_w:	Width of mux field in register
+ */
+#define MUX_PG(pg_name, f0, f1, f2, f3, f4,			\
+	       mux_r, mux_b, mux_w)				\
+	{							\
+		.name = #pg_name,				\
+		.pins = pg_name##_pins,				\
+		.npins = ARRAY_SIZE(pg_name##_pins),		\
+		.mux = MUX(f0, f1, f2, f3, f4,			\
+			   mux_r, mux_b, mux_w),		\
+	}
+
+/**
+ * SIMPLE_PG() - Initialise a simple convenience pin group
+ * @pg_name:	Pin group name (stringified, _pins appended to get pins array)
+ *
+ * A simple pin group is simply used for binding pins together so they can be
+ * referred to by a single name instead of having to list every pin
+ * individually.
+ */
+#define SIMPLE_PG(pg_name)					\
+	{							\
+		.name = #pg_name,				\
+		.pins = pg_name##_pins,				\
+		.npins = ARRAY_SIZE(pg_name##_pins),		\
+	}
+
+/**
+ * DRV_PG() - Initialise a pin group with drive control
+ * @pg_name:	Pin group name (stringified, _pins appended to get pins array)
+ * @slw_b:	Slew register bit.
+ *		The same bit is used for Schmitt, and Drive (*2).
+ */
+#define DRV_PG(pg_name, slw_b)					\
+	{							\
+		.name = #pg_name,				\
+		.pins = pg_name##_pins,				\
+		.npins = ARRAY_SIZE(pg_name##_pins),		\
+		.drv = true,					\
+		.slw_bit = (slw_b),				\
+	}
+
+/*
+ * Define main muxing pin groups
+ */
+
+/* submuxes */
+
+/*            name     f0,  f1,            f2,        f3, f4, mux r/b/w */
+DEFINE_SUBMUX(ext_dac, DAC, NOT_IQADC_STB, IQDAC_STB, NA, NA, IF_CTL, 6, 2);
+
+/* bind submuxes to internal functions */
+static struct tz1090_muxdesc *tz1090_submux[] = {
+	SUBMUX(EXT_DAC, ext_dac),
+};
+
+/*
+ * These are the pin mux groups. Pin muxing can be enabled and disabled for each
+ * pin individually so these groups are internal. The mapping of pins to pin mux
+ * group is below (tz1090_mux_pins).
+ */
+static struct tz1090_pingroup tz1090_mux_groups[] = {
+	/* Muxing pin groups */
+	/*     pg_name,  f0,       f1,       f2,       f3,        f4,          mux r/b/w */
+	MUX_PG(sdh,      SDH,      SDIO,     NA,       NA,        NA,          IF_CTL, 20, 2),
+	MUX_PG(sdio,     SDIO,     SDH,      NA,       NA,        NA,          IF_CTL, 16, 2),
+	MUX_PG(spi1_cs2, SPI1_CS2, USB_VBUS, NA,       NA,        NA,          IF_CTL, 10, 2),
+	MUX_PG(pdm_d,    PDM_DAC,  USB_VBUS, NA,       NA,        NA,          IF_CTL,  8, 2),
+	MUX_PG(afe,      AFE,      TS_OUT_0, NA,       NA,        NA,          IF_CTL,  4, 2),
+	MUX_PG(tft,      TFT,      EXT_DAC,  TS_OUT_1, LCD_TRACE, PHY_RINGOSC, IF_CTL,  0, 3),
+};
+
+/*
+ * This is the mapping from GPIO pins to pin mux groups in tz1090_mux_groups[].
+ * Pins which aren't muxable to multiple peripherals are set to
+ * TZ1090_MUX_GROUP_MAX to enable the "perip" function to enable/disable
+ * peripheral control of the pin.
+ *
+ * This array is initialised in tz1090_init_mux_pins().
+ */
+static u8 tz1090_mux_pins[NUM_GPIOS];
+
+/* TZ1090_MUX_GROUP_MAX is used in tz1090_mux_pins[] for non-muxing pins */
+#define TZ1090_MUX_GROUP_MAX ARRAY_SIZE(tz1090_mux_groups)
+
+/**
+ * tz1090_init_mux_pins() - Initialise GPIO pin to mux group mapping.
+ *
+ * Initialises the tz1090_mux_pins[] array to be the inverse of the pin lists in
+ * each pin mux group in tz1090_mux_groups[].
+ *
+ * It is assumed that no pin mux groups overlap (share pins).
+ */
+static void __init tz1090_init_mux_pins(void)
+{
+	unsigned int g, p;
+	const struct tz1090_pingroup *grp;
+	const unsigned int *pin;
+
+	for (p = 0; p < NUM_GPIOS; ++p)
+		tz1090_mux_pins[p] = TZ1090_MUX_GROUP_MAX;
+
+	grp = tz1090_mux_groups;
+	for (g = 0, grp = tz1090_mux_groups;
+	     g < ARRAY_SIZE(tz1090_mux_groups); ++g, ++grp)
+		for (pin = grp->pins, p = 0; p < grp->npins; ++p, ++pin)
+			tz1090_mux_pins[*pin] = g;
+}
+
+/*
+ * These are the externally visible pin groups. Some of them allow group control
+ * of drive configuration. Some are just simple convenience pingroups. All the
+ * internal pin mux groups in tz1090_mux_groups[] are mirrored here with the
+ * same pins.
+ * Pseudo pin groups follow in the group numbers after this array for each GPIO
+ * pin. Any group used for muxing must have all pins belonging to the same pin
+ * mux group.
+ */
+static struct tz1090_pingroup tz1090_groups[] = {
+	/* Pin groups with drive control (with no out of place pins) */
+	/*     pg_name,		slw/schmitt/drv b */
+	DRV_PG(jtag,		11 /* 11, 22 */),
+	DRV_PG(tft,		10 /* 10, 20 */),
+	DRV_PG(scb2,		9  /*  9, 18 */),
+	DRV_PG(spi0,		7  /*  7, 14 */),
+	DRV_PG(uart,		5  /*  5, 10 */),
+	DRV_PG(scb1,		4  /*  4,  8 */),
+	DRV_PG(spi1,		3  /*  3,  6 */),
+	DRV_PG(afe,		0  /*  0,  0 */),
+
+	/*
+	 * Drive specific pin groups (with odd combinations of pins which makes
+	 * the pin group naming somewhat arbitrary)
+	 */
+	/*     pg_name,		slw/schmitt/drv b */
+	DRV_PG(drive_sdio,	8  /*  8, 16 */), /* sdio_* + sdh_* */
+	DRV_PG(drive_i2s,	6  /*  6, 12 */), /* i2s_* + clk_out1 */
+	DRV_PG(drive_scb0,	2  /*  2,  4 */), /* scb0_* + pdm_{c,d} */
+	DRV_PG(drive_pdm,	1  /*  1,  2 */), /* pdm_{a,b} + clk_out0 */
+
+	/* Convenience pin groups */
+	/*        pg_name */
+	SIMPLE_PG(uart0),
+	SIMPLE_PG(uart1),
+	SIMPLE_PG(scb0),
+	SIMPLE_PG(i2s),
+	SIMPLE_PG(sdh),
+	SIMPLE_PG(sdio),
+
+	/* pseudo-pingroups for each GPIO pin follow */
+};
+
+/**
+ * struct tz1090_pmx - Private pinctrl data
+ * @dev:	Platform device
+ * @pctl:	Pin control device
+ * @regs:	Register region
+ * @lock:	Lock protecting coherency of pin_en, gpio_en, and SELECT regs
+ * @pin_en:	Pins that have been enabled (32 pins packed into each element)
+ * @gpio_en:	GPIOs that have been enabled (32 pins packed into each element)
+ */
+struct tz1090_pmx {
+	struct device		*dev;
+	struct pinctrl_dev	*pctl;
+	void __iomem		*regs;
+	spinlock_t		lock;
+	u32			pin_en[3];
+	u32			gpio_en[3];
+};
+
+static inline u32 pmx_read(struct tz1090_pmx *pmx, u32 reg)
+{
+	return ioread32(pmx->regs + reg);
+}
+
+static inline void pmx_write(struct tz1090_pmx *pmx, u32 val, u32 reg)
+{
+	iowrite32(val, pmx->regs + reg);
+}
+
+/*
+ * Pin control operations
+ */
+
+/* each GPIO pin has it's own pseudo pingroup containing only itself */
+
+static int tz1090_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
+{
+	return ARRAY_SIZE(tz1090_groups) + NUM_GPIOS;
+}
+
+static const char *tz1090_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
+						 unsigned int group)
+{
+	if (group < ARRAY_SIZE(tz1090_groups)) {
+		/* normal pingroup */
+		return tz1090_groups[group].name;
+	} else {
+		/* individual gpio pin pseudo-pingroup */
+		unsigned int pin = group - ARRAY_SIZE(tz1090_groups);
+		return tz1090_pins[pin].name;
+	}
+}
+
+static int tz1090_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
+					 unsigned int group,
+					 const unsigned int **pins,
+					 unsigned int *num_pins)
+{
+	if (group < ARRAY_SIZE(tz1090_groups)) {
+		/* normal pingroup */
+		*pins = tz1090_groups[group].pins;
+		*num_pins = tz1090_groups[group].npins;
+	} else {
+		/* individual gpio pin pseudo-pingroup */
+		unsigned int pin = group - ARRAY_SIZE(tz1090_groups);
+		*pins = &tz1090_pins[pin].number;
+		*num_pins = 1;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static void tz1090_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
+					struct seq_file *s,
+					unsigned int offset)
+{
+	seq_printf(s, " %s", dev_name(pctldev->dev));
+}
+#endif
+
+static int reserve_map(struct device *dev, struct pinctrl_map **map,
+		       unsigned int *reserved_maps, unsigned int *num_maps,
+		       unsigned int reserve)
+{
+	unsigned int old_num = *reserved_maps;
+	unsigned int new_num = *num_maps + reserve;
+	struct pinctrl_map *new_map;
+
+	if (old_num >= new_num)
+		return 0;
+
+	new_map = krealloc(*map, sizeof(*new_map) * new_num, GFP_KERNEL);
+	if (!new_map) {
+		dev_err(dev, "krealloc(map) failed\n");
+		return -ENOMEM;
+	}
+
+	memset(new_map + old_num, 0, (new_num - old_num) * sizeof(*new_map));
+
+	*map = new_map;
+	*reserved_maps = new_num;
+
+	return 0;
+}
+
+static int add_map_mux(struct pinctrl_map **map, unsigned int *reserved_maps,
+		       unsigned int *num_maps, const char *group,
+		       const char *function)
+{
+	if (WARN_ON(*num_maps == *reserved_maps))
+		return -ENOSPC;
+
+	(*map)[*num_maps].type = PIN_MAP_TYPE_MUX_GROUP;
+	(*map)[*num_maps].data.mux.group = group;
+	(*map)[*num_maps].data.mux.function = function;
+	(*num_maps)++;
+
+	return 0;
+}
+
+static int add_map_configs(struct device *dev,
+			   struct pinctrl_map **map,
+			   unsigned int *reserved_maps, unsigned int *num_maps,
+			   const char *group, unsigned long *configs,
+			   unsigned int num_configs)
+{
+	unsigned long *dup_configs;
+
+	if (WARN_ON(*num_maps == *reserved_maps))
+		return -ENOSPC;
+
+	dup_configs = kmemdup(configs, num_configs * sizeof(*dup_configs),
+			      GFP_KERNEL);
+	if (!dup_configs) {
+		dev_err(dev, "kmemdup(configs) failed\n");
+		return -ENOMEM;
+	}
+
+	(*map)[*num_maps].type = PIN_MAP_TYPE_CONFIGS_GROUP;
+	(*map)[*num_maps].data.configs.group_or_pin = group;
+	(*map)[*num_maps].data.configs.configs = dup_configs;
+	(*map)[*num_maps].data.configs.num_configs = num_configs;
+	(*num_maps)++;
+
+	return 0;
+}
+
+static void tz1090_pinctrl_dt_free_map(struct pinctrl_dev *pctldev,
+				       struct pinctrl_map *map,
+				       unsigned int num_maps)
+{
+	int i;
+
+	for (i = 0; i < num_maps; i++)
+		if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
+			kfree(map[i].data.configs.configs);
+
+	kfree(map);
+}
+
+static int tz1090_pinctrl_dt_subnode_to_map(struct device *dev,
+					    struct device_node *np,
+					    struct pinctrl_map **map,
+					    unsigned int *reserved_maps,
+					    unsigned int *num_maps)
+{
+	int ret;
+	const char *function;
+	unsigned long *configs = NULL;
+	unsigned int num_configs = 0;
+	unsigned int reserve;
+	struct property *prop;
+	const char *group;
+
+	ret = of_property_read_string(np, "tz1090,function", &function);
+	if (ret < 0) {
+		/* EINVAL=missing, which is fine since it's optional */
+		if (ret != -EINVAL)
+			dev_err(dev, "could not parse property function\n");
+		function = NULL;
+	}
+
+	ret = pinconf_generic_parse_dt_config(np, &configs, &num_configs);
+	if (ret)
+		return ret;
+
+	reserve = 0;
+	if (function != NULL)
+		reserve++;
+	if (num_configs)
+		reserve++;
+	ret = of_property_count_strings(np, "tz1090,pins");
+	if (ret < 0) {
+		dev_err(dev, "could not parse property pins\n");
+		goto exit;
+	}
+	reserve *= ret;
+
+	ret = reserve_map(dev, map, reserved_maps, num_maps, reserve);
+	if (ret < 0)
+		goto exit;
+
+	of_property_for_each_string(np, "tz1090,pins", prop, group) {
+		if (function) {
+			ret = add_map_mux(map, reserved_maps, num_maps,
+					  group, function);
+			if (ret < 0)
+				goto exit;
+		}
+
+		if (num_configs) {
+			ret = add_map_configs(dev, map, reserved_maps,
+					      num_maps, group, configs,
+					      num_configs);
+			if (ret < 0)
+				goto exit;
+		}
+	}
+
+	ret = 0;
+
+exit:
+	kfree(configs);
+	return ret;
+}
+
+static int tz1090_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
+					 struct device_node *np_config,
+					 struct pinctrl_map **map,
+					 unsigned int *num_maps)
+{
+	unsigned int reserved_maps;
+	struct device_node *np;
+	int ret;
+
+	reserved_maps = 0;
+	*map = NULL;
+	*num_maps = 0;
+
+	for_each_child_of_node(np_config, np) {
+		ret = tz1090_pinctrl_dt_subnode_to_map(pctldev->dev, np, map,
+						       &reserved_maps,
+						       num_maps);
+		if (ret < 0) {
+			tz1090_pinctrl_dt_free_map(pctldev, *map, *num_maps);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static struct pinctrl_ops tz1090_pinctrl_ops = {
+	.get_groups_count	= tz1090_pinctrl_get_groups_count,
+	.get_group_name		= tz1090_pinctrl_get_group_name,
+	.get_group_pins		= tz1090_pinctrl_get_group_pins,
+#ifdef CONFIG_DEBUG_FS
+	.pin_dbg_show		= tz1090_pinctrl_pin_dbg_show,
+#endif
+	.dt_node_to_map		= tz1090_pinctrl_dt_node_to_map,
+	.dt_free_map		= tz1090_pinctrl_dt_free_map,
+};
+
+/*
+ * Pin mux operations
+ */
+
+static int tz1090_pinctrl_get_funcs_count(struct pinctrl_dev *pctldev)
+{
+	return ARRAY_SIZE(tz1090_functions);
+}
+
+static const char *tz1090_pinctrl_get_func_name(struct pinctrl_dev *pctldev,
+						unsigned int function)
+{
+	return tz1090_functions[function].name;
+}
+
+static int tz1090_pinctrl_get_func_groups(struct pinctrl_dev *pctldev,
+					  unsigned int function,
+					  const char * const **groups,
+					  unsigned int * const num_groups)
+{
+	/* pingroup functions */
+	*groups = tz1090_functions[function].groups;
+	*num_groups = tz1090_functions[function].ngroups;
+	return 0;
+}
+
+/**
+ * tz1090_pinctrl_select() - update bit in SELECT register
+ * @pmx:		Pinmux data
+ * @pin:		Pin number (must be within GPIO range)
+ */
+static void tz1090_pinctrl_select(struct tz1090_pmx *pmx,
+				  unsigned int pin)
+{
+	u32 reg, reg_shift, select, val;
+	unsigned int pmx_index, pmx_shift;
+	unsigned long flags;
+
+	/* uses base 32 instead of base 30 */
+	pmx_index = pin >> 5;
+	pmx_shift = pin & 0x1f;
+
+	/* select = !perip || gpio */
+	select = ((~pmx->pin_en[pmx_index] |
+		   pmx->gpio_en[pmx_index]) >> pmx_shift) & 1;
+
+	/* find register and bit offset (base 30) */
+	reg = REG_PINCTRL_SELECT + 4*(pin / 30);
+	reg_shift = pin % 30;
+
+	/* modify gpio select bit */
+	__global_lock2(flags);
+	val = pmx_read(pmx, reg);
+	val &= ~BIT(reg_shift);
+	val |= select << reg_shift;
+	pmx_write(pmx, val, reg);
+	__global_unlock2(flags);
+}
+
+/**
+ * tz1090_pinctrl_gpio_select() - enable/disable GPIO usage for a pin
+ * @pmx:		Pinmux data
+ * @pin:		Pin number
+ * @gpio_select:	true to enable pin as GPIO,
+ *			false to leave control to whatever function is enabled
+ *
+ * Records that GPIO usage is enabled/disabled so that enabling a function
+ * doesn't override the SELECT register bit.
+ */
+static void tz1090_pinctrl_gpio_select(struct tz1090_pmx *pmx,
+				       unsigned int pin,
+				       bool gpio_select)
+{
+	unsigned int index, shift;
+	u32 gpio_en;
+
+	if (pin >= NUM_GPIOS)
+		return;
+
+	/* uses base 32 instead of base 30 */
+	index = pin >> 5;
+	shift = pin & 0x1f;
+
+	spin_lock(&pmx->lock);
+
+	/* keep a record whether gpio is selected */
+	gpio_en = pmx->gpio_en[index];
+	gpio_en &= ~BIT(shift);
+	if (gpio_select)
+		gpio_en |= BIT(shift);
+	pmx->gpio_en[index] = gpio_en;
+
+	/* update the select bit */
+	tz1090_pinctrl_select(pmx, pin);
+
+	spin_unlock(&pmx->lock);
+}
+
+/**
+ * tz1090_pinctrl_perip_select() - enable/disable peripheral interface for a pin
+ * @pmx:		Pinmux data
+ * @pin:		Pin number
+ * @perip_select:	true to enable peripheral interface when not GPIO,
+ *			false to leave pin in GPIO mode
+ *
+ * Records that peripheral usage is enabled/disabled so that SELECT register can
+ * be set appropriately when GPIO is disabled.
+ */
+static void tz1090_pinctrl_perip_select(struct tz1090_pmx *pmx,
+					unsigned int pin,
+					bool perip_select)
+{
+	unsigned int index, shift;
+	u32 pin_en;
+
+	if (pin >= NUM_GPIOS)
+		return;
+
+	/* uses base 32 instead of base 30 */
+	index = pin >> 5;
+	shift = pin & 0x1f;
+
+	spin_lock(&pmx->lock);
+
+	/* keep a record whether peripheral is selected */
+	pin_en = pmx->pin_en[index];
+	pin_en &= ~BIT(shift);
+	if (perip_select)
+		pin_en |= BIT(shift);
+	pmx->pin_en[index] = pin_en;
+
+	/* update the select bit */
+	tz1090_pinctrl_select(pmx, pin);
+
+	spin_unlock(&pmx->lock);
+}
+
+/**
+ * tz1090_pinctrl_enable_mux() - Switch a pin mux group to a function.
+ * @pmx:		Pinmux data
+ * @desc:		Pinmux description
+ * @function:		Function to switch to
+ *
+ * Enable a particular function on a pin mux group. Since pin mux descriptions
+ * are nested this function is recursive.
+ */
+static int tz1090_pinctrl_enable_mux(struct tz1090_pmx *pmx,
+				     const struct tz1090_muxdesc *desc,
+				     unsigned int function)
+{
+	const int *fit;
+	unsigned long flags;
+	int mux;
+	unsigned int func, ret;
+	u32 reg, mask;
+
+	/* find the mux value for this function, searching recursively */
+	for (mux = 0, fit = desc->funcs;
+	     mux < ARRAY_SIZE(desc->funcs); ++mux, ++fit) {
+		func = *fit;
+		if (func == function)
+			goto found_mux;
+
+		/* maybe it's a sub-mux */
+		if (func < ARRAY_SIZE(tz1090_submux) && tz1090_submux[func]) {
+			ret = tz1090_pinctrl_enable_mux(pmx,
+							tz1090_submux[func],
+							function);
+			if (!ret)
+				goto found_mux;
+		}
+	}
+
+	return -EINVAL;
+found_mux:
+
+	/* Set up the mux */
+	if (desc->width) {
+		mask = (BIT(desc->width) - 1) << desc->bit;
+		__global_lock2(flags);
+		reg = pmx_read(pmx, desc->reg);
+		reg &= ~mask;
+		reg |= (mux << desc->bit) & mask;
+		pmx_write(pmx, reg, desc->reg);
+		__global_unlock2(flags);
+	}
+
+	return 0;
+}
+
+/**
+ * tz1090_pinctrl_enable() - Enable a function on a pin group.
+ * @pctldev:		Pin control data
+ * @function:		Function index to enable
+ * @group:		Group index to enable
+ *
+ * Enable a particular function on a group of pins. The per GPIO pin pseudo pin
+ * groups can be used (in which case the pin will be enabled in peripheral mode
+ * and if it belongs to a pin mux group the mux will be switched if it isn't
+ * already in use. Some convenience pin groups can also be used in which case
+ * the effect is the same as enabling the function on each individual pin in the
+ * group.
+ */
+static int tz1090_pinctrl_enable(struct pinctrl_dev *pctldev,
+				 unsigned int function, unsigned int group)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	struct tz1090_pingroup *grp;
+	int ret;
+	unsigned int pin_num, mux_group, i, npins;
+	const unsigned int *pins;
+
+	/* group of pins? */
+	if (group < ARRAY_SIZE(tz1090_groups)) {
+		grp = &tz1090_groups[group];
+		npins = grp->npins;
+		pins = grp->pins;
+		/*
+		 * All pins in the group must belong to the same mux group,
+		 * which allows us to just use the mux group of the first pin.
+		 * By explicitly listing permitted pingroups for each function
+		 * the pinmux core should ensure this is always the case.
+		 */
+	} else {
+		pin_num = group - ARRAY_SIZE(tz1090_groups);
+		npins = 1;
+		pins = &pin_num;
+	}
+	mux_group = tz1090_mux_pins[*pins];
+
+	/* no mux group, but can still be individually muxed to peripheral */
+	if (mux_group >= TZ1090_MUX_GROUP_MAX) {
+		if (function == TZ1090_MUX_PERIP)
+			goto mux_pins;
+		return -EINVAL;
+	}
+
+	/* mux group already set to a different function? */
+	grp = &tz1090_mux_groups[mux_group];
+	if (grp->func_count && grp->func != function) {
+		dev_err(pctldev->dev,
+			"%s: can't mux pin(s) to '%s', group already muxed to '%s'\n",
+			__func__, tz1090_functions[function].name,
+			tz1090_functions[grp->func].name);
+		return -EBUSY;
+	}
+
+	dev_dbg(pctldev->dev, "%s: muxing %u pin(s) in '%s' to '%s'\n",
+		__func__, npins, grp->name, tz1090_functions[function].name);
+
+	/* if first pin in mux group to be enabled, enable the group mux */
+	if (!grp->func_count) {
+		grp->func = function;
+		ret = tz1090_pinctrl_enable_mux(pmx, &grp->mux, function);
+		if (ret)
+			return ret;
+	}
+	/* add pins to ref count and mux individually to peripheral */
+	grp->func_count += npins;
+mux_pins:
+	for (i = 0; i < npins; ++i)
+		tz1090_pinctrl_perip_select(pmx, pins[i], true);
+
+	return 0;
+}
+
+/**
+ * tz1090_pinctrl_disable() - Disable a function on a pin group.
+ * @pctldev:		Pin control data
+ * @function:		Function index to disable
+ * @group:		Group index to disable
+ *
+ * Disable a particular function on a group of pins. The per GPIO pin pseudo pin
+ * groups can be used (in which case the pin will be taken out of peripheral
+ * mode. Some convenience pin groups can also be used in which case the effect
+ * is the same as enabling the function on each individual pin in the group.
+ */
+static void tz1090_pinctrl_disable(struct pinctrl_dev *pctldev,
+				   unsigned int function, unsigned int group)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	struct tz1090_pingroup *grp;
+	unsigned int pin_num, mux_group, i, npins;
+	const unsigned int *pins;
+
+	/* group of pins? */
+	if (group < ARRAY_SIZE(tz1090_groups)) {
+		grp = &tz1090_groups[group];
+		npins = grp->npins;
+		pins = grp->pins;
+		/*
+		 * All pins in the group must belong to the same mux group,
+		 * which allows us to just use the mux group of the first pin.
+		 * By explicitly listing permitted pingroups for each function
+		 * the pinmux core should ensure this is always the case.
+		 */
+	} else {
+		pin_num = group - ARRAY_SIZE(tz1090_groups);
+		npins = 1;
+		pins = &pin_num;
+	}
+	mux_group = tz1090_mux_pins[*pins];
+
+	/* no mux group, but can still be individually muxed to peripheral */
+	if (mux_group >= TZ1090_MUX_GROUP_MAX) {
+		if (function == TZ1090_MUX_PERIP)
+			goto unmux_pins;
+		return;
+	}
+
+	/* mux group already set to a different function? */
+	grp = &tz1090_mux_groups[mux_group];
+	dev_dbg(pctldev->dev, "%s: unmuxing %u pin(s) in '%s' from '%s'\n",
+		__func__, npins, grp->name, tz1090_functions[function].name);
+
+	/* subtract pins from ref count and unmux individually */
+	WARN_ON(grp->func_count < npins);
+	grp->func_count -= npins;
+unmux_pins:
+	for (i = 0; i < npins; ++i)
+		tz1090_pinctrl_perip_select(pmx, pins[i], false);
+}
+
+/**
+ * tz1090_pinctrl_gpio_request_enable() - Put pin in GPIO mode.
+ * @pctldev:		Pin control data
+ * @range:		GPIO range
+ * @pin:		Pin number
+ *
+ * Puts a particular pin into GPIO mode, disabling peripheral control until it's
+ * disabled again.
+ */
+static int tz1090_pinctrl_gpio_request_enable(struct pinctrl_dev *pctldev,
+					      struct pinctrl_gpio_range *range,
+					      unsigned int pin)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	tz1090_pinctrl_gpio_select(pmx, pin, true);
+	return 0;
+}
+
+/**
+ * tz1090_pinctrl_gpio_disable_free() - Take pin out of GPIO mode.
+ * @pctldev:		Pin control data
+ * @range:		GPIO range
+ * @pin:		Pin number
+ *
+ * Take a particular pin out of GPIO mode. If the pin is enabled for a
+ * peripheral it will return to peripheral mode.
+ */
+static void tz1090_pinctrl_gpio_disable_free(struct pinctrl_dev *pctldev,
+					     struct pinctrl_gpio_range *range,
+					     unsigned int pin)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	tz1090_pinctrl_gpio_select(pmx, pin, false);
+}
+
+static struct pinmux_ops tz1090_pinmux_ops = {
+	.get_functions_count	= tz1090_pinctrl_get_funcs_count,
+	.get_function_name	= tz1090_pinctrl_get_func_name,
+	.get_function_groups	= tz1090_pinctrl_get_func_groups,
+	.enable			= tz1090_pinctrl_enable,
+	.disable		= tz1090_pinctrl_disable,
+	.gpio_request_enable	= tz1090_pinctrl_gpio_request_enable,
+	.gpio_disable_free	= tz1090_pinctrl_gpio_disable_free,
+};
+
+/*
+ * Pin config operations
+ */
+
+struct tz1090_pinconf_pullup {
+	unsigned char index;
+	unsigned char shift;
+};
+
+/* The mapping of pin to pull up/down register index and shift */
+static struct tz1090_pinconf_pullup tz1090_pinconf_pullup[] = {
+	{5, 22}, /*  0 - TZ1090_PIN_SDIO_CLK */
+	{0, 14}, /*  1 - TZ1090_PIN_SDIO_CMD */
+	{0,  6}, /*  2 - TZ1090_PIN_SDIO_D0 */
+	{0,  8}, /*  3 - TZ1090_PIN_SDIO_D1 */
+	{0, 10}, /*  4 - TZ1090_PIN_SDIO_D2 */
+	{0, 12}, /*  5 - TZ1090_PIN_SDIO_D3 */
+	{0,  2}, /*  6 - TZ1090_PIN_SDH_CD */
+	{0,  4}, /*  7 - TZ1090_PIN_SDH_WP */
+	{0, 16}, /*  8 - TZ1090_PIN_SPI0_MCLK */
+	{0, 18}, /*  9 - TZ1090_PIN_SPI0_CS0 */
+	{0, 20}, /* 10 - TZ1090_PIN_SPI0_CS1 */
+	{0, 22}, /* 11 - TZ1090_PIN_SPI0_CS2 */
+	{0, 24}, /* 12 - TZ1090_PIN_SPI0_DOUT */
+	{0, 26}, /* 13 - TZ1090_PIN_SPI0_DIN */
+	{0, 28}, /* 14 - TZ1090_PIN_SPI1_MCLK */
+	{0, 30}, /* 15 - TZ1090_PIN_SPI1_CS0 */
+	{1,  0}, /* 16 - TZ1090_PIN_SPI1_CS1 */
+	{1,  2}, /* 17 - TZ1090_PIN_SPI1_CS2 */
+	{1,  4}, /* 18 - TZ1090_PIN_SPI1_DOUT */
+	{1,  6}, /* 19 - TZ1090_PIN_SPI1_DIN */
+	{1,  8}, /* 20 - TZ1090_PIN_UART0_RXD */
+	{1, 10}, /* 21 - TZ1090_PIN_UART0_TXD */
+	{1, 12}, /* 22 - TZ1090_PIN_UART0_CTS */
+	{1, 14}, /* 23 - TZ1090_PIN_UART0_RTS */
+	{1, 16}, /* 24 - TZ1090_PIN_UART1_RXD */
+	{1, 18}, /* 25 - TZ1090_PIN_UART1_TXD */
+	{1, 20}, /* 26 - TZ1090_PIN_SCB0_SDAT */
+	{1, 22}, /* 27 - TZ1090_PIN_SCB0_SCLK */
+	{1, 24}, /* 28 - TZ1090_PIN_SCB1_SDAT */
+	{1, 26}, /* 29 - TZ1090_PIN_SCB1_SCLK */
+
+	{1, 28}, /* 30 - TZ1090_PIN_SCB2_SDAT */
+	{1, 30}, /* 31 - TZ1090_PIN_SCB2_SCLK */
+	{2,  0}, /* 32 - TZ1090_PIN_I2S_MCLK */
+	{2,  2}, /* 33 - TZ1090_PIN_I2S_BCLK_OUT */
+	{2,  4}, /* 34 - TZ1090_PIN_I2S_LRCLK_OUT */
+	{2,  6}, /* 35 - TZ1090_PIN_I2S_DOUT0 */
+	{2,  8}, /* 36 - TZ1090_PIN_I2S_DOUT1 */
+	{2, 10}, /* 37 - TZ1090_PIN_I2S_DOUT2 */
+	{2, 12}, /* 38 - TZ1090_PIN_I2S_DIN */
+	{4, 12}, /* 39 - TZ1090_PIN_PDM_A */
+	{4, 14}, /* 40 - TZ1090_PIN_PDM_B */
+	{4, 18}, /* 41 - TZ1090_PIN_PDM_C */
+	{4, 20}, /* 42 - TZ1090_PIN_PDM_D */
+	{2, 14}, /* 43 - TZ1090_PIN_TFT_RED0 */
+	{2, 16}, /* 44 - TZ1090_PIN_TFT_RED1 */
+	{2, 18}, /* 45 - TZ1090_PIN_TFT_RED2 */
+	{2, 20}, /* 46 - TZ1090_PIN_TFT_RED3 */
+	{2, 22}, /* 47 - TZ1090_PIN_TFT_RED4 */
+	{2, 24}, /* 48 - TZ1090_PIN_TFT_RED5 */
+	{2, 26}, /* 49 - TZ1090_PIN_TFT_RED6 */
+	{2, 28}, /* 50 - TZ1090_PIN_TFT_RED7 */
+	{2, 30}, /* 51 - TZ1090_PIN_TFT_GREEN0 */
+	{3,  0}, /* 52 - TZ1090_PIN_TFT_GREEN1 */
+	{3,  2}, /* 53 - TZ1090_PIN_TFT_GREEN2 */
+	{3,  4}, /* 54 - TZ1090_PIN_TFT_GREEN3 */
+	{3,  6}, /* 55 - TZ1090_PIN_TFT_GREEN4 */
+	{3,  8}, /* 56 - TZ1090_PIN_TFT_GREEN5 */
+	{3, 10}, /* 57 - TZ1090_PIN_TFT_GREEN6 */
+	{3, 12}, /* 58 - TZ1090_PIN_TFT_GREEN7 */
+	{3, 14}, /* 59 - TZ1090_PIN_TFT_BLUE0 */
+
+	{3, 16}, /* 60 - TZ1090_PIN_TFT_BLUE1 */
+	{3, 18}, /* 61 - TZ1090_PIN_TFT_BLUE2 */
+	{3, 20}, /* 62 - TZ1090_PIN_TFT_BLUE3 */
+	{3, 22}, /* 63 - TZ1090_PIN_TFT_BLUE4 */
+	{3, 24}, /* 64 - TZ1090_PIN_TFT_BLUE5 */
+	{3, 26}, /* 65 - TZ1090_PIN_TFT_BLUE6 */
+	{3, 28}, /* 66 - TZ1090_PIN_TFT_BLUE7 */
+	{3, 30}, /* 67 - TZ1090_PIN_TFT_VDDEN_GD */
+	{4,  0}, /* 68 - TZ1090_PIN_TFT_PANELCLK */
+	{4,  2}, /* 69 - TZ1090_PIN_TFT_BLANK_LS */
+	{4,  4}, /* 70 - TZ1090_PIN_TFT_VSYNC_NS */
+	{4,  6}, /* 71 - TZ1090_PIN_TFT_HSYNC_NR */
+	{4,  8}, /* 72 - TZ1090_PIN_TFT_VD12ACB */
+	{4, 10}, /* 73 - TZ1090_PIN_TFT_PWRSAVE */
+	{4, 24}, /* 74 - TZ1090_PIN_TX_ON */
+	{4, 26}, /* 75 - TZ1090_PIN_RX_ON */
+	{4, 28}, /* 76 - TZ1090_PIN_PLL_ON */
+	{4, 30}, /* 77 - TZ1090_PIN_PA_ON */
+	{5,  0}, /* 78 - TZ1090_PIN_RX_HP */
+	{5,  6}, /* 79 - TZ1090_PIN_GAIN0 */
+	{5,  8}, /* 80 - TZ1090_PIN_GAIN1 */
+	{5, 10}, /* 81 - TZ1090_PIN_GAIN2 */
+	{5, 12}, /* 82 - TZ1090_PIN_GAIN3 */
+	{5, 14}, /* 83 - TZ1090_PIN_GAIN4 */
+	{5, 16}, /* 84 - TZ1090_PIN_GAIN5 */
+	{5, 18}, /* 85 - TZ1090_PIN_GAIN6 */
+	{5, 20}, /* 86 - TZ1090_PIN_GAIN7 */
+	{5,  2}, /* 87 - TZ1090_PIN_ANT_SEL0 */
+	{5,  4}, /* 88 - TZ1090_PIN_ANT_SEL1 */
+	{0,  0}, /* 89 - TZ1090_PIN_SDH_CLK_IN */
+
+	{5, 24}, /* 90 - TZ1090_PIN_TCK */
+	{5, 26}, /* 91 - TZ1090_PIN_TRST */
+	{5, 28}, /* 92 - TZ1090_PIN_TDI */
+	{5, 30}, /* 93 - TZ1090_PIN_TDO */
+	{6,  0}, /* 94 - TZ1090_PIN_TMS */
+	{4, 16}, /* 95 - TZ1090_PIN_CLK_OUT0 */
+	{4, 22}, /* 96 - TZ1090_PIN_CLK_OUT1 */
+};
+
+static int tz1090_pinconf_reg(struct pinctrl_dev *pctldev,
+			      unsigned int pin,
+			      enum pin_config_param param,
+			      bool report_err,
+			      u32 *reg, u32 *width, u32 *mask, u32 *shift,
+			      u32 *val)
+{
+	struct tz1090_pinconf_pullup *pu;
+
+	/* All supported pins have controllable input bias */
+	switch (param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+		*val = REG_PU_PD_TRISTATE;
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		*val = REG_PU_PD_UP;
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		*val = REG_PU_PD_DOWN;
+		break;
+	case PIN_CONFIG_BIAS_BUS_HOLD:
+		*val = REG_PU_PD_REPEATER;
+		break;
+	default:
+		return -ENOTSUPP;
+	};
+
+	/* Only input bias parameters supported */
+	pu = &tz1090_pinconf_pullup[pin];
+	*reg = REG_PINCTRL_PU_PD + 4*pu->index;
+	*shift = pu->shift;
+	*width = 2;
+
+	/* Calculate field information */
+	*mask = (BIT(*width) - 1) << *shift;
+
+	return 0;
+}
+
+static int tz1090_pinconf_get(struct pinctrl_dev *pctldev,
+			      unsigned int pin, unsigned long *config)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	enum pin_config_param param = pinconf_to_config_param(*config);
+	int ret;
+	u32 reg, width, mask, shift, val, tmp, arg;
+
+	/* Get register information */
+	ret = tz1090_pinconf_reg(pctldev, pin, param, true,
+				 &reg, &width, &mask, &shift, &val);
+	if (ret < 0)
+		return ret;
+
+	/* Extract field from register */
+	tmp = pmx_read(pmx, reg);
+	arg = ((tmp & mask) >> shift) == val;
+
+	/* Config not active */
+	if (!arg)
+		return -EINVAL;
+
+	/* And pack config */
+	*config = pinconf_to_config_packed(param, arg);
+
+	return 0;
+}
+
+static int tz1090_pinconf_set(struct pinctrl_dev *pctldev,
+			      unsigned int pin, unsigned long config)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	enum pin_config_param param = pinconf_to_config_param(config);
+	unsigned int arg = pinconf_to_config_argument(config);
+	int ret;
+	u32 reg, width, mask, shift, val, tmp;
+	unsigned long flags;
+
+	dev_dbg(pctldev->dev, "%s(pin=%s, config=%#lx)\n",
+		__func__, tz1090_pins[pin].name, config);
+
+	/* Get register information */
+	ret = tz1090_pinconf_reg(pctldev, pin, param, true,
+				 &reg, &width, &mask, &shift, &val);
+	if (ret < 0)
+		return ret;
+
+	/* Unpack argument and range check it */
+	if (arg > 1) {
+		dev_dbg(pctldev->dev, "%s: arg %u out of range\n",
+			__func__, arg);
+		return -EINVAL;
+	}
+
+	/* Write register field */
+	__global_lock2(flags);
+	tmp = pmx_read(pmx, reg);
+	tmp &= ~mask;
+	if (arg)
+		tmp |= val << shift;
+	pmx_write(pmx, tmp, reg);
+	__global_unlock2(flags);
+
+	return 0;
+}
+
+static const int tz1090_boolean_map[] = {
+	[0]		= -EINVAL,
+	[1]		= 1,
+};
+
+static const int tz1090_dr_map[] = {
+	[REG_DR_2mA]	= 2,
+	[REG_DR_4mA]	= 4,
+	[REG_DR_8mA]	= 8,
+	[REG_DR_12mA]	= 12,
+};
+
+static int tz1090_pinconf_group_reg(struct pinctrl_dev *pctldev,
+				    const struct tz1090_pingroup *g,
+				    enum pin_config_param param,
+				    bool report_err,
+				    u32 *reg, u32 *width, u32 *mask, u32 *shift,
+				    const int **map)
+{
+	/* Drive configuration applies in groups, but not to all groups. */
+	if (!g->drv) {
+		if (report_err)
+			dev_dbg(pctldev->dev,
+				"%s: group %s has no drive control\n",
+				__func__, g->name);
+		return -ENOTSUPP;
+	}
+
+	/* Find information about drive parameter's register */
+	switch (param) {
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		*reg = REG_PINCTRL_SCHMITT;
+		*width = 1;
+		*map = tz1090_boolean_map;
+		break;
+	case PIN_CONFIG_SLEW_RATE:
+		*reg = REG_PINCTRL_SR;
+		*width = 1;
+		*map = tz1090_boolean_map;
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH:
+		*reg = REG_PINCTRL_DR;
+		*width = 2;
+		*map = tz1090_dr_map;
+		break;
+	default:
+		return -ENOTSUPP;
+	};
+
+	/* Calculate field information */
+	*shift = g->slw_bit * *width;
+	*mask = (BIT(*width) - 1) << *shift;
+
+	return 0;
+}
+
+static int tz1090_pinconf_group_get(struct pinctrl_dev *pctldev,
+				    unsigned int group,
+				    unsigned long *config)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	const struct tz1090_pingroup *g;
+	enum pin_config_param param = pinconf_to_config_param(*config);
+	int ret, arg;
+	unsigned int pin;
+	u32 reg, width, mask, shift, val;
+	const int *map;
+
+	if (group >= ARRAY_SIZE(tz1090_groups)) {
+		pin = group - ARRAY_SIZE(tz1090_groups);
+		return tz1090_pinconf_get(pctldev, pin, config);
+	}
+
+	g = &tz1090_groups[group];
+	if (g->npins == 1) {
+		pin = g->pins[0];
+		ret = tz1090_pinconf_get(pctldev, pin, config);
+		if (ret != -ENOTSUPP)
+			return ret;
+	}
+
+	/* Get register information */
+	ret = tz1090_pinconf_group_reg(pctldev, g, param, true,
+				       &reg, &width, &mask, &shift, &map);
+	if (ret < 0)
+		return ret;
+
+	/* Extract field from register */
+	val = pmx_read(pmx, reg);
+	arg = map[(val & mask) >> shift];
+	if (arg < 0)
+		return arg;
+
+	/* And pack config */
+	*config = pinconf_to_config_packed(param, arg);
+
+	return 0;
+}
+
+static int tz1090_pinconf_group_set(struct pinctrl_dev *pctldev,
+				    unsigned int group, unsigned long config)
+{
+	struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+	const struct tz1090_pingroup *g;
+	enum pin_config_param param = pinconf_to_config_param(config);
+	unsigned int arg, pin, i;
+	const unsigned int *pit;
+	int ret;
+	u32 reg, width, mask, shift, val;
+	unsigned long flags;
+	const int *map;
+
+	if (group >= ARRAY_SIZE(tz1090_groups)) {
+		pin = group - ARRAY_SIZE(tz1090_groups);
+		return tz1090_pinconf_set(pctldev, pin, config);
+	}
+
+	g = &tz1090_groups[group];
+	if (g->npins == 1) {
+		pin = g->pins[0];
+		ret = tz1090_pinconf_set(pctldev, pin, config);
+		if (ret != -ENOTSUPP)
+			return ret;
+	}
+
+	dev_dbg(pctldev->dev, "%s(group=%s, config=%#lx)\n",
+		__func__, g->name, config);
+
+	/* Get register information */
+	ret = tz1090_pinconf_group_reg(pctldev, g, param, true,
+				       &reg, &width, &mask, &shift, &map);
+	if (ret < 0) {
+		/*
+		 * Maybe we're trying to set a per-pin configuration of a group,
+		 * so do the pins one by one. This is mainly as a convenience.
+		 */
+		for (i = 0, pit = g->pins; i < g->npins; ++i, ++pit) {
+			ret = tz1090_pinconf_set(pctldev, *pit, config);
+			if (ret)
+				return ret;
+		}
+		return 0;
+	}
+
+	/* Unpack argument and map it to register value */
+	arg = pinconf_to_config_argument(config);
+	for (i = 0; i < BIT(width); ++i) {
+		if (map[i] == arg || (map[i] == -EINVAL && !arg)) {
+			/* Write register field */
+			__global_lock2(flags);
+			val = pmx_read(pmx, reg);
+			val &= ~mask;
+			val |= i << shift;
+			pmx_write(pmx, val, reg);
+			__global_unlock2(flags);
+			return 0;
+		}
+	}
+
+	dev_dbg(pctldev->dev, "%s: arg %u not supported\n",
+		__func__, arg);
+	return -EINVAL;
+}
+
+static struct pinconf_ops tz1090_pinconf_ops = {
+	.is_generic			= true,
+	.pin_config_get			= tz1090_pinconf_get,
+	.pin_config_set			= tz1090_pinconf_set,
+	.pin_config_group_get		= tz1090_pinconf_group_get,
+	.pin_config_group_set		= tz1090_pinconf_group_set,
+	.pin_config_config_dbg_show	= pinconf_generic_dump_config,
+};
+
+/*
+ * Pin control driver setup
+ */
+
+static struct pinctrl_desc tz1090_pinctrl_desc = {
+	.pctlops	= &tz1090_pinctrl_ops,
+	.pmxops		= &tz1090_pinmux_ops,
+	.confops	= &tz1090_pinconf_ops,
+	.owner		= THIS_MODULE,
+};
+
+static int tz1090_pinctrl_probe(struct platform_device *pdev)
+{
+	struct tz1090_pmx *pmx;
+	struct resource *res;
+
+	pmx = devm_kzalloc(&pdev->dev, sizeof(*pmx), GFP_KERNEL);
+	if (!pmx) {
+		dev_err(&pdev->dev, "Can't alloc tz1090_pmx\n");
+		return -ENOMEM;
+	}
+	pmx->dev = &pdev->dev;
+	spin_lock_init(&pmx->lock);
+
+	tz1090_pinctrl_desc.name = dev_name(&pdev->dev);
+	tz1090_pinctrl_desc.pins = tz1090_pins;
+	tz1090_pinctrl_desc.npins = ARRAY_SIZE(tz1090_pins);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "Missing MEM resource\n");
+		return -ENODEV;
+	}
+
+	if (!devm_request_mem_region(&pdev->dev, res->start,
+				     resource_size(res),
+				     dev_name(&pdev->dev))) {
+		dev_err(&pdev->dev,
+			"Couldn't request MEM resource\n");
+		return -ENODEV;
+	}
+
+	pmx->regs = devm_ioremap(&pdev->dev, res->start,
+				 resource_size(res));
+	if (!pmx->regs) {
+		dev_err(&pdev->dev, "Couldn't ioremap regs\n");
+		return -ENODEV;
+	}
+
+	pmx->pctl = pinctrl_register(&tz1090_pinctrl_desc, &pdev->dev, pmx);
+	if (!pmx->pctl) {
+		dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");
+		return -ENODEV;
+	}
+
+	platform_set_drvdata(pdev, pmx);
+
+	dev_info(&pdev->dev, "TZ1090 pinctrl driver initialised\n");
+
+	return 0;
+}
+
+static int tz1090_pinctrl_remove(struct platform_device *pdev)
+{
+	struct tz1090_pmx *pmx = platform_get_drvdata(pdev);
+
+	pinctrl_unregister(pmx->pctl);
+
+	return 0;
+}
+
+static struct of_device_id tz1090_pinctrl_of_match[] = {
+	{ .compatible = "img,tz1090-pinctrl", },
+	{ },
+};
+
+static struct platform_driver tz1090_pinctrl_driver = {
+	.driver = {
+		.name		= "tz1090-pinctrl",
+		.owner		= THIS_MODULE,
+		.of_match_table	= tz1090_pinctrl_of_match,
+	},
+	.probe	= tz1090_pinctrl_probe,
+	.remove	= tz1090_pinctrl_remove,
+};
+
+static int __init tz1090_pinctrl_init(void)
+{
+	tz1090_init_mux_pins();
+	return platform_driver_register(&tz1090_pinctrl_driver);
+}
+arch_initcall(tz1090_pinctrl_init);
+
+static void __exit tz1090_pinctrl_exit(void)
+{
+	platform_driver_unregister(&tz1090_pinctrl_driver);
+}
+module_exit(tz1090_pinctrl_exit);
+
+MODULE_AUTHOR("Imagination Technologies Ltd.");
+MODULE_DESCRIPTION("Toumaz Xenif TZ1090 pinctrl driver");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, tz1090_pinctrl_of_match);