diff options
| author | James Hogan <jhogan@kernel.org> | 2018-02-21 23:38:21 +0000 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-03-01 15:34:15 +0100 |
| commit | 4a7cba71ca77be885f5861623dfb35317061ac0d (patch) | |
| tree | 620ff9eb5db6e2601cf207605e0a6a1f060a2cc2 | |
| parent | fa2b7fae8426e2cd690278e514abcc09e4f89a8f (diff) | |
pinctrl: Drop TZ1090 drivers
Now that arch/metag/ has been removed, along with TZ1090 SoC support,
remove the TZ1090 pinctrl drivers. They are of no value without the
architecture and SoC platform code.
Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | Documentation/devicetree/bindings/pinctrl/img,tz1090-pdc-pinctrl.txt | 127 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt | 227 | ||||
| -rw-r--r-- | drivers/pinctrl/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/pinctrl/Makefile | 2 | ||||
| -rw-r--r-- | drivers/pinctrl/pinctrl-tz1090-pdc.c | 989 | ||||
| -rw-r--r-- | drivers/pinctrl/pinctrl-tz1090.c | 2005 |
6 files changed, 0 insertions, 3362 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/img,tz1090-pdc-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/img,tz1090-pdc-pinctrl.txt deleted file mode 100644 index cf9ccdff4455..000000000000 --- a/Documentation/devicetree/bindings/pinctrl/img,tz1090-pdc-pinctrl.txt +++ /dev/null @@ -1,127 +0,0 @@ -ImgTec TZ1090 PDC pin controller - -Required properties: -- compatible: "img,tz1090-pdc-pinctrl" -- reg: Should contain the register physical address and length of the - SOC_GPIO_CONTROL registers in the PDC register region. - -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-PDC's pin configuration nodes act as a container for an arbitrary 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 - - drive-strength: Integer, control drive strength of pins in mA. - 2: 2mA - 4: 4mA - 8: 8mA - 12: 12mA - - low-power-enable: Flag, power-on-start weak pull-down for invalid power. - - low-power-disable: Flag, power-on-start weak pull-down disabled. - -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: - - 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 gpio pins in that group). - - gpio0, gpio1, sys_wake0, sys_wake1, sys_wake2, ir_data, ext_power. - - mux groups: - - These all support function. - - gpio0 - pins: gpio0. - function: ir_mod_stable_out. - gpio1 - pins: gpio1. - function: ir_mod_power_out. - - drive groups: - - These support input-schmitt-enable, input-schmitt-disable, - drive-strength, low-power-enable, and low-power-disable. - - pdc - pins: gpio0, gpio1, sys_wake0, sys_wake1, sys_wake2, ir_data, - ext_power. - -Example: - - pinctrl_pdc: pinctrl@2006500 { - #gpio-range-cells = <3>; - compatible = "img,tz1090-pdc-pinctrl"; - reg = <0x02006500 0x100>; - }; - -Example board file extracts: - - &pinctrl_pdc { - pinctrl-names = "default"; - pinctrl-0 = <&syswake_default>; - - syswake_default: syswakes { - syswake_cfg { - tz1090,pins = "sys_wake0", - "sys_wake1", - "sys_wake2"; - pull-up; - }; - }; - irmod_default: irmod { - gpio0_cfg { - tz1090,pins = "gpio0"; - tz1090,function = "ir_mod_stable_out"; - }; - gpio1_cfg { - tz1090,pins = "gpio1"; - tz1090,function = "ir_mod_power_out"; - }; - }; - }; - - ir: ir@2006200 { - pinctrl-names = "default"; - pinctrl-0 = <&irmod_default>; - }; diff --git a/Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt deleted file mode 100644 index 2dfd9a3fc1e4..000000000000 --- a/Documentation/devicetree/bindings/pinctrl/img,tz1090-pinctrl.txt +++ /dev/null @@ -1,227 +0,0 @@ -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 arbitrary 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 - - 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 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. - 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. - drive-strength: supported. - - drive groups: - - These all support input-schmitt-enable, input-schmitt-disable, - 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@2005800 { - #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@2004b00 { - pinctrl-names = "default"; - pinctrl-0 = <&uart0_default>; - }; diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 0f254b35c378..f5ef8201c09f 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -263,18 +263,6 @@ config PINCTRL_ST select PINCONF select GPIOLIB_IRQCHIP -config PINCTRL_TZ1090 - bool "Toumaz Xenif TZ1090 pin control driver" - depends on SOC_TZ1090 - select PINMUX - select GENERIC_PINCONF - -config PINCTRL_TZ1090_PDC - bool "Toumaz Xenif TZ1090 PDC pin control driver" - depends on SOC_TZ1090 - select PINMUX - select PINCONF - config PINCTRL_U300 bool "U300 pin controller driver" depends on ARCH_U300 diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index d3692633e9ed..6255546735ff 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -34,8 +34,6 @@ obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o obj-$(CONFIG_PINCTRL_SIRF) += sirf/ obj-$(CONFIG_PINCTRL_SX150X) += pinctrl-sx150x.o obj-$(CONFIG_ARCH_TEGRA) += tegra/ -obj-$(CONFIG_PINCTRL_TZ1090) += pinctrl-tz1090.o -obj-$(CONFIG_PINCTRL_TZ1090_PDC) += pinctrl-tz1090-pdc.o obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o diff --git a/drivers/pinctrl/pinctrl-tz1090-pdc.c b/drivers/pinctrl/pinctrl-tz1090-pdc.c deleted file mode 100644 index b16d1c96b7eb..000000000000 --- a/drivers/pinctrl/pinctrl-tz1090-pdc.c +++ /dev/null @@ -1,989 +0,0 @@ -/* - * Pinctrl driver for the Toumaz Xenif TZ1090 PowerDown Controller pins - * - * 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> - -/* - * 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_GPIO_CONTROL0 0x00 -#define REG_GPIO_CONTROL2 0x08 - -/* Register field information */ -#define REG_GPIO_CONTROL2_PU_PD_S 16 -#define REG_GPIO_CONTROL2_PDC_POS_S 4 -#define REG_GPIO_CONTROL2_PDC_DR_S 2 -#define REG_GPIO_CONTROL2_PDC_SR_S 1 -#define REG_GPIO_CONTROL2_PDC_SCHMITT_S 0 - -/* 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 - -/* 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_pdc_function - TZ1090 PDC 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_pdc_function { - const char *name; - const char * const *groups; - unsigned int ngroups; -}; - -/** - * struct tz1090_pdc_pingroup - TZ1090 PDC pin group - * @name: Name of pin group. - * @pins: Array of pin numbers in this pin group. - * @npins: Number of pins in this pin group. - * @func: Function enabled by the mux. - * @reg: Mux register offset. - * @bit: Mux register bit. - * @drv: Drive control supported, otherwise it's a mux. - * This means Schmitt, Slew, and Drive strength. - * - * A representation of a group of pins (possibly just one pin) in the TZ1090 - * PDC pin controller. Each group allows some parameter or parameters to be - * configured. The most common is mux function selection. - */ -struct tz1090_pdc_pingroup { - const char *name; - const unsigned int *pins; - unsigned int npins; - int func; - u16 reg; - u8 bit; - bool drv; -}; - -/* - * All PDC pins can be GPIOs. Define these first to match how the GPIO driver - * names/numbers its pins. - */ - -enum tz1090_pdc_pin { - TZ1090_PDC_PIN_GPIO0, - TZ1090_PDC_PIN_GPIO1, - TZ1090_PDC_PIN_SYS_WAKE0, - TZ1090_PDC_PIN_SYS_WAKE1, - TZ1090_PDC_PIN_SYS_WAKE2, - TZ1090_PDC_PIN_IR_DATA, - TZ1090_PDC_PIN_EXT_POWER, -}; - -/* Pin names */ - -static const struct pinctrl_pin_desc tz1090_pdc_pins[] = { - /* PDC GPIOs */ - PINCTRL_PIN(TZ1090_PDC_PIN_GPIO0, "gpio0"), - PINCTRL_PIN(TZ1090_PDC_PIN_GPIO1, "gpio1"), - PINCTRL_PIN(TZ1090_PDC_PIN_SYS_WAKE0, "sys_wake0"), - PINCTRL_PIN(TZ1090_PDC_PIN_SYS_WAKE1, "sys_wake1"), - PINCTRL_PIN(TZ1090_PDC_PIN_SYS_WAKE2, "sys_wake2"), - PINCTRL_PIN(TZ1090_PDC_PIN_IR_DATA, "ir_data"), - PINCTRL_PIN(TZ1090_PDC_PIN_EXT_POWER, "ext_power"), -}; - -/* Pin group pins */ - -static const unsigned int gpio0_pins[] = { - TZ1090_PDC_PIN_GPIO0, -}; - -static const unsigned int gpio1_pins[] = { - TZ1090_PDC_PIN_GPIO1, -}; - -static const unsigned int pdc_pins[] = { - TZ1090_PDC_PIN_GPIO0, - TZ1090_PDC_PIN_GPIO1, - TZ1090_PDC_PIN_SYS_WAKE0, - TZ1090_PDC_PIN_SYS_WAKE1, - TZ1090_PDC_PIN_SYS_WAKE2, - TZ1090_PDC_PIN_IR_DATA, - TZ1090_PDC_PIN_EXT_POWER, -}; - -/* Mux functions */ - -enum tz1090_pdc_mux { - /* PDC_GPIO0 mux */ - TZ1090_PDC_MUX_IR_MOD_STABLE_OUT, - /* PDC_GPIO1 mux */ - TZ1090_PDC_MUX_IR_MOD_POWER_OUT, -}; - -/* Pin groups a function can be muxed to */ - -static const char * const gpio0_groups[] = { - "gpio0", -}; - -static const char * const gpio1_groups[] = { - "gpio1", -}; - -#define FUNCTION(mux, fname, group) \ - [(TZ1090_PDC_MUX_ ## mux)] = { \ - .name = #fname, \ - .groups = group##_groups, \ - .ngroups = ARRAY_SIZE(group##_groups), \ - } - -/* Must correlate with enum tz1090_pdc_mux */ -static const struct tz1090_pdc_function tz1090_pdc_functions[] = { - /* MUX fn pingroups */ - FUNCTION(IR_MOD_STABLE_OUT, ir_mod_stable_out, gpio0), - FUNCTION(IR_MOD_POWER_OUT, ir_mod_power_out, gpio1), -}; - -/** - * 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_PDC_MUX_ is prepended) - * @mux_r: Mux register (REG_PINCTRL_ is prepended) - * @mux_b: Bit number in register of mux field - */ -#define MUX_PG(pg_name, f0, mux_r, mux_b) \ - { \ - .name = #pg_name, \ - .pins = pg_name##_pins, \ - .npins = ARRAY_SIZE(pg_name##_pins), \ - .func = TZ1090_PDC_MUX_ ## f0, \ - .reg = (REG_ ## mux_r), \ - .bit = (mux_b), \ - } - -/** - * DRV_PG() - Initialise a pin group with drive control - * @pg_name: Pin group name (stringified, _pins appended to get pins array) - */ -#define DRV_PG(pg_name) \ - { \ - .name = #pg_name, \ - .pins = pg_name##_pins, \ - .npins = ARRAY_SIZE(pg_name##_pins), \ - .drv = true, \ - } - -static const struct tz1090_pdc_pingroup tz1090_pdc_groups[] = { - /* Muxing pin groups */ - /* pg_name, f0, mux register, mux bit */ - MUX_PG(gpio0, IR_MOD_STABLE_OUT, GPIO_CONTROL0, 7), - MUX_PG(gpio1, IR_MOD_POWER_OUT, GPIO_CONTROL0, 6), - - /* Drive pin groups */ - /* pg_name */ - DRV_PG(pdc), -}; - -/** - * struct tz1090_pdc_pmx - Private pinctrl data - * @dev: Platform device - * @pctl: Pin control device - * @regs: Register region - * @lock: Lock protecting coherency of mux_en and gpio_en - * @mux_en: Muxes that have been enabled - * @gpio_en: Muxable GPIOs that have been enabled - */ -struct tz1090_pdc_pmx { - struct device *dev; - struct pinctrl_dev *pctl; - void __iomem *regs; - spinlock_t lock; - u32 mux_en; - u32 gpio_en; -}; - -static inline u32 pmx_read(struct tz1090_pdc_pmx *pmx, u32 reg) -{ - return ioread32(pmx->regs + reg); -} - -static inline void pmx_write(struct tz1090_pdc_pmx *pmx, u32 val, u32 reg) -{ - iowrite32(val, pmx->regs + reg); -} - -/* - * Pin control operations - */ - -static int tz1090_pdc_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) -{ - return ARRAY_SIZE(tz1090_pdc_groups); -} - -static const char *tz1090_pdc_pinctrl_get_group_name(struct pinctrl_dev *pctl, - unsigned int group) -{ - return tz1090_pdc_groups[group].name; -} - -static int tz1090_pdc_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, - unsigned int group, - const unsigned int **pins, - unsigned int *num_pins) -{ - *pins = tz1090_pdc_groups[group].pins; - *num_pins = tz1090_pdc_groups[group].npins; - - return 0; -} - -#ifdef CONFIG_DEBUG_FS -static void tz1090_pdc_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; -} - -/** - * get_group_selector() - returns the group selector for a group - * @pin_group: the pin group to look up - * - * This is the same as pinctrl_get_group_selector except it doesn't produce an - * error message if the group isn't found or debug messages. - */ -static int get_group_selector(const char *pin_group) -{ - unsigned int group; - - for (group = 0; group < ARRAY_SIZE(tz1090_pdc_groups); ++group) - if (!strcmp(tz1090_pdc_groups[group].name, pin_group)) - return group; - - return -EINVAL; -} - -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; - enum pinctrl_map_type type; - - if (WARN_ON(*num_maps == *reserved_maps)) - return -ENOSPC; - - dup_configs = kmemdup(configs, num_configs * sizeof(*dup_configs), - GFP_KERNEL); - if (!dup_configs) - return -ENOMEM; - - /* - * We support both pins and pin groups, but we need to figure out which - * one we have. - */ - if (get_group_selector(group) >= 0) - type = PIN_MAP_TYPE_CONFIGS_GROUP; - else - type = PIN_MAP_TYPE_CONFIGS_PIN; - (*map)[*num_maps].type = type; - (*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_pdc_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_pdc_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_pdc_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_pdc_pinctrl_dt_subnode_to_map(pctldev->dev, np, - map, &reserved_maps, - num_maps); - if (ret < 0) { - tz1090_pdc_pinctrl_dt_free_map(pctldev, *map, - *num_maps); - return ret; - } - } - - return 0; -} - -static const struct pinctrl_ops tz1090_pdc_pinctrl_ops = { - .get_groups_count = tz1090_pdc_pinctrl_get_groups_count, - .get_group_name = tz1090_pdc_pinctrl_get_group_name, - .get_group_pins = tz1090_pdc_pinctrl_get_group_pins, -#ifdef CONFIG_DEBUG_FS - .pin_dbg_show = tz1090_pdc_pinctrl_pin_dbg_show, -#endif - .dt_node_to_map = tz1090_pdc_pinctrl_dt_node_to_map, - .dt_free_map = tz1090_pdc_pinctrl_dt_free_map, -}; - -/* - * Pin mux operations - */ - -static int tz1090_pdc_pinctrl_get_funcs_count(struct pinctrl_dev *pctldev) -{ - return ARRAY_SIZE(tz1090_pdc_functions); -} - -static const char *tz1090_pdc_pinctrl_get_func_name(struct pinctrl_dev *pctldev, - unsigned int function) -{ - return tz1090_pdc_functions[function].name; -} - -static int tz1090_pdc_pinctrl_get_func_groups(struct pinctrl_dev *pctldev, - unsigned int function, - const char * const **groups, - unsigned int * const num_groups) -{ - *groups = tz1090_pdc_functions[function].groups; - *num_groups = tz1090_pdc_functions[function].ngroups; - - return 0; -} - -/** - * tz1090_pdc_pinctrl_mux() - update mux bit - * @pmx: Pinmux data - * @grp: Pin mux group - */ -static void tz1090_pdc_pinctrl_mux(struct tz1090_pdc_pmx *pmx, - const struct tz1090_pdc_pingroup *grp) -{ - u32 reg, select; - unsigned int pin_shift = grp->pins[0]; - unsigned long flags; - - /* select = mux && !gpio */ - select = ((pmx->mux_en & ~pmx->gpio_en) >> pin_shift) & 1; - - /* set up the mux */ - __global_lock2(flags); - reg = pmx_read(pmx, grp->reg); - reg &= ~BIT(grp->bit); - reg |= select << grp->bit; - pmx_write(pmx, reg, grp->reg); - __global_unlock2(flags); -} - -static int tz1090_pdc_pinctrl_set_mux(struct pinctrl_dev *pctldev, - unsigned int function, - unsigned int group) -{ - struct tz1090_pdc_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); - const struct tz1090_pdc_pingroup *grp = &tz1090_pdc_groups[group]; - - dev_dbg(pctldev->dev, "%s(func=%u (%s), group=%u (%s))\n", - __func__, - function, tz1090_pdc_functions[function].name, - group, tz1090_pdc_groups[group].name); - - /* is it even a mux? */ - if (grp->drv) - return -EINVAL; - - /* does this group even control the function? */ - if (function != grp->func) - return -EINVAL; - - /* record the pin being muxed and update mux bit */ - spin_lock(&pmx->lock); - pmx->mux_en |= BIT(grp->pins[0]); - tz1090_pdc_pinctrl_mux(pmx, grp); - spin_unlock(&pmx->lock); - return 0; -} - -static const struct tz1090_pdc_pingroup *find_mux_group( - struct tz1090_pdc_pmx *pmx, - unsigned int pin) -{ - const struct tz1090_pdc_pingroup *grp; - unsigned int group; - - grp = tz1090_pdc_groups; - for (group = 0; group < ARRAY_SIZE(tz1090_pdc_groups); ++group, ++grp) { - /* only match muxes */ - if (grp->drv) - continue; - - /* with a matching pin */ - if (grp->pins[0] == pin) - return grp; - } - - return NULL; -} - -static int tz1090_pdc_pinctrl_gpio_request_enable( - struct pinctrl_dev *pctldev, - struct pinctrl_gpio_range *range, - unsigned int pin) -{ - struct tz1090_pdc_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); - const struct tz1090_pdc_pingroup *grp = find_mux_group(pmx, pin); - - if (grp) { - /* record the pin in GPIO use and update mux bit */ - spin_lock(&pmx->lock); - pmx->gpio_en |= BIT(pin); - tz1090_pdc_pinctrl_mux(pmx, grp); - spin_unlock(&pmx->lock); - } - return 0; -} - -static void tz1090_pdc_pinctrl_gpio_disable_free( - struct pinctrl_dev *pctldev, - struct pinctrl_gpio_range *range, - unsigned int pin) -{ - struct tz1090_pdc_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); - const struct tz1090_pdc_pingroup *grp = find_mux_group(pmx, pin); - - if (grp) { - /* record the pin not in GPIO use and update mux bit */ - spin_lock(&pmx->lock); - pmx->gpio_en &= ~BIT(pin); - tz1090_pdc_pinctrl_mux(pmx, grp); - spin_unlock(&pmx->lock); - } -} - -static const struct pinmux_ops tz1090_pdc_pinmux_ops = { - .get_functions_count = tz1090_pdc_pinctrl_get_funcs_count, - .get_function_name = tz1090_pdc_pinctrl_get_func_name, - .get_function_groups = tz1090_pdc_pinctrl_get_func_groups, - .set_mux = tz1090_pdc_pinctrl_set_mux, - .gpio_request_enable = tz1090_pdc_pinctrl_gpio_request_enable, - .gpio_disable_free = tz1090_pdc_pinctrl_gpio_disable_free, -}; - -/* - * Pin config operations - */ - -static int tz1090_pdc_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) -{ - /* Find information about parameter's register */ - 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 */ - *reg = REG_GPIO_CONTROL2; - *shift = REG_GPIO_CONTROL2_PU_PD_S + pin*2; - *width = 2; - - /* Calculate field information */ - *mask = (BIT(*width) - 1) << *shift; - - return 0; -} - -static int tz1090_pdc_pinconf_get(struct pinctrl_dev *pctldev, - unsigned int pin, unsigned long *config) -{ - struct tz1090_pdc_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_pdc_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_pdc_pinconf_set(struct pinctrl_dev *pctldev, - unsigned int pin, unsigned long *configs, - unsigned num_configs) -{ - struct tz1090_pdc_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_pdc_pins[pin].name, configs[i]); - - /* Get register information */ - ret = tz1090_pdc_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_pdc_boolean_map[] = { - [0] = -EINVAL, - [1] = 1, -}; - -static const int tz1090_pdc_dr_map[] = { - [REG_DR_2mA] = 2, - [REG_DR_4mA] = 4, - [REG_DR_8mA] = 8, - [REG_DR_12mA] = 12, -}; - -static int tz1090_pdc_pinconf_group_reg(struct pinctrl_dev *pctldev, - const struct tz1090_pdc_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 */ - *reg = REG_GPIO_CONTROL2; - switch (param) { - case PIN_CONFIG_INPUT_SCHMITT_ENABLE: - *shift = REG_GPIO_CONTROL2_PDC_SCHMITT_S; - *width = 1; - *map = tz1090_pdc_boolean_map; - break; - case PIN_CONFIG_DRIVE_STRENGTH: - *shift = REG_GPIO_CONTROL2_PDC_DR_S; - *width = 2; - *map = tz1090_pdc_dr_map; - break; - case PIN_CONFIG_LOW_POWER_MODE: - *shift = REG_GPIO_CONTROL2_PDC_POS_S; - *width = 1; - *map = tz1090_pdc_boolean_map; - break; - default: - return -ENOTSUPP; - } - - /* Calculate field information */ - *mask = (BIT(*width) - 1) << *shift; - - return 0; -} - -static int tz1090_pdc_pinconf_group_get(struct pinctrl_dev *pctldev, - unsigned int group, - unsigned long *config) -{ - struct tz1090_pdc_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); - const struct tz1090_pdc_pingroup *g = &tz1090_pdc_groups[group]; - enum pin_config_param param = pinconf_to_config_param(*config); - int ret, arg; - u32 reg, width, mask, shift, val; - const int *map; - - /* Get register information */ - ret = tz1090_pdc_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_pdc_pinconf_group_set(struct pinctrl_dev *pctldev, - unsigned int group, - unsigned long *configs, - unsigned num_configs) -{ - struct tz1090_pdc_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); - const struct tz1090_pdc_pingroup *g = &tz1090_pdc_groups[group]; - enum pin_config_param param; - const unsigned int *pit; - unsigned int i; - int ret, arg; - u32 reg, width, mask, shift, val; - unsigned long flags; - const int *map; - int j; - - 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_pdc_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_pdc_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 0; - -next_config: - ; - } /* for each config */ - - return 0; -} - -static const struct pinconf_ops tz1090_pdc_pinconf_ops = { - .is_generic = true, - .pin_config_get = tz1090_pdc_pinconf_get, - .pin_config_set = tz1090_pdc_pinconf_set, - .pin_config_group_get = tz1090_pdc_pinconf_group_get, - .pin_config_group_set = tz1090_pdc_pinconf_group_set, - .pin_config_config_dbg_show = pinconf_generic_dump_config, -}; - -/* - * Pin control driver setup - */ - -static struct pinctrl_desc tz1090_pdc_pinctrl_desc = { - .pctlops = &tz1090_pdc_pinctrl_ops, - .pmxops = &tz1090_pdc_pinmux_ops, - .confops = &tz1090_pdc_pinconf_ops, - .owner = THIS_MODULE, -}; - -static int tz1090_pdc_pinctrl_probe(struct platform_device *pdev) -{ - struct tz1090_pdc_pmx *pmx; - struct resource *res; - - pmx = devm_kzalloc(&pdev->dev, sizeof(*pmx), GFP_KERNEL); - if (!pmx) - return -ENOMEM; - - pmx->dev = &pdev->dev; - spin_lock_init(&pmx->lock); - - tz1090_pdc_pinctrl_desc.name = dev_name(&pdev->dev); - tz1090_pdc_pinctrl_desc.pins = tz1090_pdc_pins; - tz1090_pdc_pinctrl_desc.npins = ARRAY_SIZE(tz1090_pdc_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 = devm_pinctrl_register(&pdev->dev, &tz1090_pdc_pinctrl_desc, - pmx); - if (IS_ERR(pmx->pctl)) { - dev_err(&pdev->dev, "Couldn't register pinctrl driver\n"); - return PTR_ERR(pmx->pctl); - } - - platform_set_drvdata(pdev, pmx); - - dev_info(&pdev->dev, "TZ1090 PDC pinctrl driver initialised\n"); - - return 0; -} - -static const struct of_device_id tz1090_pdc_pinctrl_of_match[] = { - { .compatible = "img,tz1090-pdc-pinctrl", }, - { }, -}; - -static struct platform_driver tz1090_pdc_pinctrl_driver = { - .driver = { - .name = "tz1090-pdc-pinctrl", - .of_match_table = tz1090_pdc_pinctrl_of_match, - }, - .probe = tz1090_pdc_pinctrl_probe, -}; - -static int __init tz1090_pdc_pinctrl_init(void) -{ - return platform_driver_register(&tz1090_pdc_pinctrl_driver); -} -arch_initcall(tz1090_pdc_pinctrl_init); - -static void __exit tz1090_pdc_pinctrl_exit(void) -{ - platform_driver_unregister(&tz1090_pdc_pinctrl_driver); -} -module_exit(tz1090_pdc_pinctrl_exit); - -MODULE_AUTHOR("Imagination Technologies Ltd."); -MODULE_DESCRIPTION("Toumaz Xenif TZ1090 PDC pinctrl driver"); -MODULE_LICENSE("GPL v2"); -MODULE_DEVICE_TABLE(of, tz1090_pdc_pinctrl_of_match); diff --git a/drivers/pinctrl/pinctrl-tz1090.c b/drivers/pinctrl/pinctrl-tz1090.c deleted file mode 100644 index 2379ce2be365..000000000000 --- a/drivers/pinctrl/pinctrl-tz1090.c +++ /dev/null @@ -1,2005 +0,0 @@ -/* - * 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) - 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 const 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 const 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 const 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) - 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 = devm_pinctrl_register(&pdev->dev, &tz1090_pinctrl_desc, - pmx); - if (IS_ERR(pmx->pctl)) { - dev_err(&pdev->dev, "Couldn't register pinctrl driver\n"); - return PTR_ERR(pmx->pctl); - } - - platform_set_drvdata(pdev, pmx); - - dev_info(&pdev->dev, "TZ1090 pinctrl driver initialised\n"); - - 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, -}; - -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); |