--- /dev/null
+/*
+ * 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, NULL, &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_set_mux(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_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,
+ .set_mux = tz1090_pinctrl_set_mux,
+ .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,
+ ®, &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 *configs,
+ unsigned num_configs)
+{
+ struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+ enum pin_config_param param;
+ unsigned int arg;
+ int ret;
+ u32 reg, width, mask, shift, val, tmp;
+ unsigned long flags;
+ int i;
+
+ for (i = 0; i < num_configs; i++) {
+ param = pinconf_to_config_param(configs[i]);
+ arg = pinconf_to_config_argument(configs[i]);
+
+ dev_dbg(pctldev->dev, "%s(pin=%s, config=%#lx)\n",
+ __func__, tz1090_pins[pin].name, configs[i]);
+
+ /* Get register information */
+ ret = tz1090_pinconf_reg(pctldev, pin, param, true,
+ ®, &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);
+ } /* for each config */
+
+ 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_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,
+ ®, &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 *configs,
+ unsigned num_configs)
+{
+ struct tz1090_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+ const struct tz1090_pingroup *g;
+ enum pin_config_param param;
+ unsigned int arg, pin, i;
+ const unsigned int *pit;
+ int ret;
+ u32 reg, width, mask, shift, val;
+ unsigned long flags;
+ const int *map;
+ int j;
+
+ if (group >= ARRAY_SIZE(tz1090_groups)) {
+ pin = group - ARRAY_SIZE(tz1090_groups);
+ return tz1090_pinconf_set(pctldev, pin, configs, num_configs);
+ }
+
+ g = &tz1090_groups[group];
+ if (g->npins == 1) {
+ pin = g->pins[0];
+ ret = tz1090_pinconf_set(pctldev, pin, configs, num_configs);
+ if (ret != -ENOTSUPP)
+ return ret;
+ }
+
+ for (j = 0; j < num_configs; j++) {
+ param = pinconf_to_config_param(configs[j]);
+
+ dev_dbg(pctldev->dev, "%s(group=%s, config=%#lx)\n",
+ __func__, g->name, configs[j]);
+
+ /* Get register information */
+ ret = tz1090_pinconf_group_reg(pctldev, g, param, true, ®,
+ &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, configs,
+ num_configs);
+ if (ret)
+ return ret;
+ }
+ return 0;
+ }
+
+ /* Unpack argument and map it to register value */
+ arg = pinconf_to_config_argument(configs[j]);
+ 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);
+ goto next_config;
+ }
+ }
+
+ dev_dbg(pctldev->dev, "%s: arg %u not supported\n",
+ __func__, arg);
+ return -EINVAL;
+
+next_config:
+ ;
+ } /* for each config */
+
+ return 0;
+}
+
+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);
+ pmx->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(pmx->regs))
+ return PTR_ERR(pmx->regs);
+
+ 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 const struct of_device_id tz1090_pinctrl_of_match[] = {
+ { .compatible = "img,tz1090-pinctrl", },
+ { },
+};
+
+static struct platform_driver tz1090_pinctrl_driver = {
+ .driver = {
+ .name = "tz1090-pinctrl",
+ .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);
Code Review / kvmfornfv.git / blobdiff