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>

1 files changed, 2077 insertions, 0 deletions

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;
+