| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20210120132045.2127659-5-arnd@kernel.org>
Date: Wed, 20 Jan 2021 14:20:44 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org,
Linus Walleij <linus.walleij@...aro.org>
Cc: Bartosz Golaszewski <bgolaszewski@...libre.com>,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 4/5] pinctrl: remove coh901 driver
From: Arnd Bergmann <arnd@...db.de>
The ST-Ericsson U300 platform is getting removed, so this driver is no
longer needed.
Cc: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
.../bindings/gpio/gpio-stericsson-coh901.txt | 7 -
drivers/pinctrl/Kconfig | 10 -
drivers/pinctrl/Makefile | 1 -
drivers/pinctrl/pinctrl-coh901.c | 774 ------------------
drivers/pinctrl/pinctrl-coh901.h | 6 -
5 files changed, 798 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt
delete mode 100644 drivers/pinctrl/pinctrl-coh901.c
delete mode 100644 drivers/pinctrl/pinctrl-coh901.h
diff --git a/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt b/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt
deleted file mode 100644
index fd665b44d767..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-ST-Ericsson COH 901 571/3 GPIO controller
-
-Required properties:
-- compatible: Compatible property value should be "stericsson,gpio-coh901"
-- reg: Physical base address of the controller and length of memory mapped
- region.
-- interrupts: the 0...n interrupts assigned to the different GPIO ports/banks.
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index e176137dbf29..9ddbf14d9536 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -277,16 +277,6 @@ config PINCTRL_U300
select PINMUX
select GENERIC_PINCONF
-config PINCTRL_COH901
- bool "ST-Ericsson U300 COH 901 335/571 GPIO"
- depends on GPIOLIB && ARCH_U300 && PINCTRL_U300
- select GPIOLIB_IRQCHIP
- help
- Say yes here to support GPIO interface on ST-Ericsson U300.
- The names of the two IP block variants supported are
- COH 901 335 and COH 901 571/3. They contain 3, 5 or 7
- ports of 8 GPIO pins each.
-
config PINCTRL_MAX77620
tristate "MAX77620/MAX20024 Pincontrol support"
depends on MFD_MAX77620 && OF
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index f414846abe2d..10643440b467 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -34,7 +34,6 @@ obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
obj-$(CONFIG_PINCTRL_SX150X) += pinctrl-sx150x.o
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o
-obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o
obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o
obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o
obj-$(CONFIG_PINCTRL_LPC18XX) += pinctrl-lpc18xx.o
diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
deleted file mode 100644
index 2905348ff430..000000000000
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ /dev/null
@@ -1,774 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * U300 GPIO module.
- *
- * Copyright (C) 2007-2012 ST-Ericsson AB
- * COH 901 571/3 - Used in DB3210 (U365 2.0) and DB3350 (U335 1.0)
- * Author: Linus Walleij <linus.walleij@...aro.org>
- * Author: Jonas Aaberg <jonas.aberg@...ricsson.com>
- */
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/gpio/driver.h>
-#include <linux/slab.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/pinctrl/pinconf-generic.h>
-#include "pinctrl-coh901.h"
-
-#define U300_GPIO_PORT_STRIDE (0x30)
-/*
- * Control Register 32bit (R/W)
- * bit 15-9 (mask 0x0000FE00) contains the number of cores. 8*cores
- * gives the number of GPIO pins.
- * bit 8-2 (mask 0x000001FC) contains the core version ID.
- */
-#define U300_GPIO_CR (0x00)
-#define U300_GPIO_CR_SYNC_SEL_ENABLE (0x00000002UL)
-#define U300_GPIO_CR_BLOCK_CLKRQ_ENABLE (0x00000001UL)
-#define U300_GPIO_PXPDIR (0x04)
-#define U300_GPIO_PXPDOR (0x08)
-#define U300_GPIO_PXPCR (0x0C)
-#define U300_GPIO_PXPCR_ALL_PINS_MODE_MASK (0x0000FFFFUL)
-#define U300_GPIO_PXPCR_PIN_MODE_MASK (0x00000003UL)
-#define U300_GPIO_PXPCR_PIN_MODE_SHIFT (0x00000002UL)
-#define U300_GPIO_PXPCR_PIN_MODE_INPUT (0x00000000UL)
-#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL (0x00000001UL)
-#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_DRAIN (0x00000002UL)
-#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_SOURCE (0x00000003UL)
-#define U300_GPIO_PXPER (0x10)
-#define U300_GPIO_PXPER_ALL_PULL_UP_DISABLE_MASK (0x000000FFUL)
-#define U300_GPIO_PXPER_PULL_UP_DISABLE (0x00000001UL)
-#define U300_GPIO_PXIEV (0x14)
-#define U300_GPIO_PXIEN (0x18)
-#define U300_GPIO_PXIFR (0x1C)
-#define U300_GPIO_PXICR (0x20)
-#define U300_GPIO_PXICR_ALL_IRQ_CONFIG_MASK (0x000000FFUL)
-#define U300_GPIO_PXICR_IRQ_CONFIG_MASK (0x00000001UL)
-#define U300_GPIO_PXICR_IRQ_CONFIG_FALLING_EDGE (0x00000000UL)
-#define U300_GPIO_PXICR_IRQ_CONFIG_RISING_EDGE (0x00000001UL)
-
-/* 8 bits per port, no version has more than 7 ports */
-#define U300_GPIO_NUM_PORTS 7
-#define U300_GPIO_PINS_PER_PORT 8
-#define U300_GPIO_MAX (U300_GPIO_PINS_PER_PORT * U300_GPIO_NUM_PORTS)
-
-struct u300_gpio_port {
- struct u300_gpio *gpio;
- char name[8];
- int irq;
- int number;
- u8 toggle_edge_mode;
-};
-
-struct u300_gpio {
- struct gpio_chip chip;
- struct u300_gpio_port ports[U300_GPIO_NUM_PORTS];
- struct clk *clk;
- void __iomem *base;
- struct device *dev;
- u32 stride;
- /* Register offsets */
- u32 pcr;
- u32 dor;
- u32 dir;
- u32 per;
- u32 icr;
- u32 ien;
- u32 iev;
-};
-
-/*
- * Macro to expand to read a specific register found in the "gpio"
- * struct. It requires the struct u300_gpio *gpio variable to exist in
- * its context. It calculates the port offset from the given pin
- * offset, muliplies by the port stride and adds the register offset
- * so it provides a pointer to the desired register.
- */
-#define U300_PIN_REG(pin, reg) \
- (gpio->base + (pin >> 3) * gpio->stride + gpio->reg)
-
-/*
- * Provides a bitmask for a specific gpio pin inside an 8-bit GPIO
- * register.
- */
-#define U300_PIN_BIT(pin) \
- (1 << (pin & 0x07))
-
-struct u300_gpio_confdata {
- u16 bias_mode;
- bool output;
- int outval;
-};
-
-#define U300_FLOATING_INPUT { \
- .bias_mode = PIN_CONFIG_BIAS_HIGH_IMPEDANCE, \
- .output = false, \
-}
-
-#define U300_PULL_UP_INPUT { \
- .bias_mode = PIN_CONFIG_BIAS_PULL_UP, \
- .output = false, \
-}
-
-#define U300_OUTPUT_LOW { \
- .output = true, \
- .outval = 0, \
-}
-
-#define U300_OUTPUT_HIGH { \
- .output = true, \
- .outval = 1, \
-}
-
-/* Initial configuration */
-static const struct u300_gpio_confdata __initconst
-bs335_gpio_config[U300_GPIO_NUM_PORTS][U300_GPIO_PINS_PER_PORT] = {
- /* Port 0, pins 0-7 */
- {
- U300_FLOATING_INPUT,
- U300_OUTPUT_HIGH,
- U300_FLOATING_INPUT,
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- },
- /* Port 1, pins 0-7 */
- {
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- U300_PULL_UP_INPUT,
- U300_FLOATING_INPUT,
- U300_OUTPUT_HIGH,
- U300_OUTPUT_LOW,
- U300_OUTPUT_LOW,
- },
- /* Port 2, pins 0-7 */
- {
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_OUTPUT_LOW,
- U300_PULL_UP_INPUT,
- U300_OUTPUT_LOW,
- U300_PULL_UP_INPUT,
- },
- /* Port 3, pins 0-7 */
- {
- U300_PULL_UP_INPUT,
- U300_OUTPUT_LOW,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- },
- /* Port 4, pins 0-7 */
- {
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- },
- /* Port 5, pins 0-7 */
- {
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- },
- /* Port 6, pind 0-7 */
- {
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- U300_FLOATING_INPUT,
- }
-};
-
-static int u300_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- struct u300_gpio *gpio = gpiochip_get_data(chip);
-
- return !!(readl(U300_PIN_REG(offset, dir)) & U300_PIN_BIT(offset));
-}
-
-static void u300_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- unsigned long flags;
- u32 val;
-
- local_irq_save(flags);
-
- val = readl(U300_PIN_REG(offset, dor));
- if (value)
- writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, dor));
- else
- writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, dor));
-
- local_irq_restore(flags);
-}
-
-static int u300_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- unsigned long flags;
- u32 val;
-
- local_irq_save(flags);
- val = readl(U300_PIN_REG(offset, pcr));
- /* Mask out this pin, note 2 bits per setting */
- val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << ((offset & 0x07) << 1));
- writel(val, U300_PIN_REG(offset, pcr));
- local_irq_restore(flags);
- return 0;
-}
-
-static int u300_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
- int value)
-{
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- unsigned long flags;
- u32 oldmode;
- u32 val;
-
- local_irq_save(flags);
- val = readl(U300_PIN_REG(offset, pcr));
- /*
- * Drive mode must be set by the special mode set function, set
- * push/pull mode by default if no mode has been selected.
- */
- oldmode = val & (U300_GPIO_PXPCR_PIN_MODE_MASK <<
- ((offset & 0x07) << 1));
- /* mode = 0 means input, else some mode is already set */
- if (oldmode == 0) {
- val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK <<
- ((offset & 0x07) << 1));
- val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL
- << ((offset & 0x07) << 1));
- writel(val, U300_PIN_REG(offset, pcr));
- }
- u300_gpio_set(chip, offset, value);
- local_irq_restore(flags);
- return 0;
-}
-
-/* Returning -EINVAL means "supported but not available" */
-int u300_gpio_config_get(struct gpio_chip *chip,
- unsigned offset,
- unsigned long *config)
-{
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- enum pin_config_param param = (enum pin_config_param) *config;
- bool biasmode;
- u32 drmode;
-
- /* One bit per pin, clamp to bool range */
- biasmode = !!(readl(U300_PIN_REG(offset, per)) & U300_PIN_BIT(offset));
-
- /* Mask out the two bits for this pin and shift to bits 0,1 */
- drmode = readl(U300_PIN_REG(offset, pcr));
- drmode &= (U300_GPIO_PXPCR_PIN_MODE_MASK << ((offset & 0x07) << 1));
- drmode >>= ((offset & 0x07) << 1);
-
- switch (param) {
- case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
- *config = 0;
- if (biasmode)
- return 0;
- else
- return -EINVAL;
- break;
- case PIN_CONFIG_BIAS_PULL_UP:
- *config = 0;
- if (!biasmode)
- return 0;
- else
- return -EINVAL;
- break;
- case PIN_CONFIG_DRIVE_PUSH_PULL:
- *config = 0;
- if (drmode == U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL)
- return 0;
- else
- return -EINVAL;
- break;
- case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- *config = 0;
- if (drmode == U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_DRAIN)
- return 0;
- else
- return -EINVAL;
- break;
- case PIN_CONFIG_DRIVE_OPEN_SOURCE:
- *config = 0;
- if (drmode == U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_SOURCE)
- return 0;
- else
- return -EINVAL;
- break;
- default:
- break;
- }
- return -ENOTSUPP;
-}
-
-int u300_gpio_config_set(struct gpio_chip *chip, unsigned offset,
- enum pin_config_param param)
-{
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- unsigned long flags;
- u32 val;
-
- local_irq_save(flags);
- switch (param) {
- case PIN_CONFIG_BIAS_DISABLE:
- case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
- val = readl(U300_PIN_REG(offset, per));
- writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, per));
- break;
- case PIN_CONFIG_BIAS_PULL_UP:
- val = readl(U300_PIN_REG(offset, per));
- writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, per));
- break;
- case PIN_CONFIG_DRIVE_PUSH_PULL:
- val = readl(U300_PIN_REG(offset, pcr));
- val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK
- << ((offset & 0x07) << 1));
- val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL
- << ((offset & 0x07) << 1));
- writel(val, U300_PIN_REG(offset, pcr));
- break;
- case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- val = readl(U300_PIN_REG(offset, pcr));
- val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK
- << ((offset & 0x07) << 1));
- val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_DRAIN
- << ((offset & 0x07) << 1));
- writel(val, U300_PIN_REG(offset, pcr));
- break;
- case PIN_CONFIG_DRIVE_OPEN_SOURCE:
- val = readl(U300_PIN_REG(offset, pcr));
- val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK
- << ((offset & 0x07) << 1));
- val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_SOURCE
- << ((offset & 0x07) << 1));
- writel(val, U300_PIN_REG(offset, pcr));
- break;
- default:
- local_irq_restore(flags);
- dev_err(gpio->dev, "illegal configuration requested\n");
- return -EINVAL;
- }
- local_irq_restore(flags);
- return 0;
-}
-
-static const struct gpio_chip u300_gpio_chip = {
- .label = "u300-gpio-chip",
- .owner = THIS_MODULE,
- .request = gpiochip_generic_request,
- .free = gpiochip_generic_free,
- .get = u300_gpio_get,
- .set = u300_gpio_set,
- .direction_input = u300_gpio_direction_input,
- .direction_output = u300_gpio_direction_output,
-};
-
-static void u300_toggle_trigger(struct u300_gpio *gpio, unsigned offset)
-{
- u32 val;
-
- val = readl(U300_PIN_REG(offset, icr));
- /* Set mode depending on state */
- if (u300_gpio_get(&gpio->chip, offset)) {
- /* High now, let's trigger on falling edge next then */
- writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, icr));
- dev_dbg(gpio->dev, "next IRQ on falling edge on pin %d\n",
- offset);
- } else {
- /* Low now, let's trigger on rising edge next then */
- writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, icr));
- dev_dbg(gpio->dev, "next IRQ on rising edge on pin %d\n",
- offset);
- }
-}
-
-static int u300_gpio_irq_type(struct irq_data *d, unsigned trigger)
-{
- struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- struct u300_gpio_port *port = &gpio->ports[d->hwirq >> 3];
- int offset = d->hwirq;
- u32 val;
-
- if ((trigger & IRQF_TRIGGER_RISING) &&
- (trigger & IRQF_TRIGGER_FALLING)) {
- /*
- * The GPIO block can only trigger on falling OR rising edges,
- * not both. So we need to toggle the mode whenever the pin
- * goes from one state to the other with a special state flag
- */
- dev_dbg(gpio->dev,
- "trigger on both rising and falling edge on pin %d\n",
- offset);
- port->toggle_edge_mode |= U300_PIN_BIT(offset);
- u300_toggle_trigger(gpio, offset);
- } else if (trigger & IRQF_TRIGGER_RISING) {
- dev_dbg(gpio->dev, "trigger on rising edge on pin %d\n",
- offset);
- val = readl(U300_PIN_REG(offset, icr));
- writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, icr));
- port->toggle_edge_mode &= ~U300_PIN_BIT(offset);
- } else if (trigger & IRQF_TRIGGER_FALLING) {
- dev_dbg(gpio->dev, "trigger on falling edge on pin %d\n",
- offset);
- val = readl(U300_PIN_REG(offset, icr));
- writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, icr));
- port->toggle_edge_mode &= ~U300_PIN_BIT(offset);
- }
-
- return 0;
-}
-
-static void u300_gpio_irq_enable(struct irq_data *d)
-{
- struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- struct u300_gpio_port *port = &gpio->ports[d->hwirq >> 3];
- int offset = d->hwirq;
- u32 val;
- unsigned long flags;
-
- dev_dbg(gpio->dev, "enable IRQ for hwirq %lu on port %s, offset %d\n",
- d->hwirq, port->name, offset);
- local_irq_save(flags);
- val = readl(U300_PIN_REG(offset, ien));
- writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, ien));
- local_irq_restore(flags);
-}
-
-static void u300_gpio_irq_disable(struct irq_data *d)
-{
- struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- int offset = d->hwirq;
- u32 val;
- unsigned long flags;
-
- local_irq_save(flags);
- val = readl(U300_PIN_REG(offset, ien));
- writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, ien));
- local_irq_restore(flags);
-}
-
-static struct irq_chip u300_gpio_irqchip = {
- .name = "u300-gpio-irqchip",
- .irq_enable = u300_gpio_irq_enable,
- .irq_disable = u300_gpio_irq_disable,
- .irq_set_type = u300_gpio_irq_type,
-};
-
-static void u300_gpio_irq_handler(struct irq_desc *desc)
-{
- unsigned int irq = irq_desc_get_irq(desc);
- struct irq_chip *parent_chip = irq_desc_get_chip(desc);
- struct gpio_chip *chip = irq_desc_get_handler_data(desc);
- struct u300_gpio *gpio = gpiochip_get_data(chip);
- struct u300_gpio_port *port = &gpio->ports[irq - chip->base];
- int pinoffset = port->number << 3; /* get the right stride */
- unsigned long val;
-
- chained_irq_enter(parent_chip, desc);
-
- /* Read event register */
- val = readl(U300_PIN_REG(pinoffset, iev));
- /* Mask relevant bits */
- val &= 0xFFU; /* 8 bits per port */
- /* ACK IRQ (clear event) */
- writel(val, U300_PIN_REG(pinoffset, iev));
-
- /* Call IRQ handler */
- if (val != 0) {
- int irqoffset;
-
- for_each_set_bit(irqoffset, &val, U300_GPIO_PINS_PER_PORT) {
- int offset = pinoffset + irqoffset;
- int pin_irq = irq_find_mapping(chip->irq.domain, offset);
-
- dev_dbg(gpio->dev, "GPIO IRQ %d on pin %d\n",
- pin_irq, offset);
- generic_handle_irq(pin_irq);
- /*
- * Triggering IRQ on both rising and falling edge
- * needs mockery
- */
- if (port->toggle_edge_mode & U300_PIN_BIT(offset))
- u300_toggle_trigger(gpio, offset);
- }
- }
-
- chained_irq_exit(parent_chip, desc);
-}
-
-static void __init u300_gpio_init_pin(struct u300_gpio *gpio,
- int offset,
- const struct u300_gpio_confdata *conf)
-{
- /* Set mode: input or output */
- if (conf->output) {
- u300_gpio_direction_output(&gpio->chip, offset, conf->outval);
-
- /* Deactivate bias mode for output */
- u300_gpio_config_set(&gpio->chip, offset,
- PIN_CONFIG_BIAS_HIGH_IMPEDANCE);
-
- /* Set drive mode for output */
- u300_gpio_config_set(&gpio->chip, offset,
- PIN_CONFIG_DRIVE_PUSH_PULL);
-
- dev_dbg(gpio->dev, "set up pin %d as output, value: %d\n",
- offset, conf->outval);
- } else {
- u300_gpio_direction_input(&gpio->chip, offset);
-
- /* Always set output low on input pins */
- u300_gpio_set(&gpio->chip, offset, 0);
-
- /* Set bias mode for input */
- u300_gpio_config_set(&gpio->chip, offset, conf->bias_mode);
-
- dev_dbg(gpio->dev, "set up pin %d as input, bias: %04x\n",
- offset, conf->bias_mode);
- }
-}
-
-static void __init u300_gpio_init_coh901571(struct u300_gpio *gpio)
-{
- int i, j;
-
- /* Write default config and values to all pins */
- for (i = 0; i < U300_GPIO_NUM_PORTS; i++) {
- for (j = 0; j < 8; j++) {
- const struct u300_gpio_confdata *conf;
- int offset = (i*8) + j;
-
- conf = &bs335_gpio_config[i][j];
- u300_gpio_init_pin(gpio, offset, conf);
- }
- }
-}
-
-/*
- * Here we map a GPIO in the local gpio_chip pin space to a pin in
- * the local pinctrl pin space. The pin controller used is
- * pinctrl-u300.
- */
-struct coh901_pinpair {
- unsigned int offset;
- unsigned int pin_base;
-};
-
-#define COH901_PINRANGE(a, b) { .offset = a, .pin_base = b }
-
-static struct coh901_pinpair coh901_pintable[] = {
- COH901_PINRANGE(10, 426),
- COH901_PINRANGE(11, 180),
- COH901_PINRANGE(12, 165), /* MS/MMC card insertion */
- COH901_PINRANGE(13, 179),
- COH901_PINRANGE(14, 178),
- COH901_PINRANGE(16, 194),
- COH901_PINRANGE(17, 193),
- COH901_PINRANGE(18, 192),
- COH901_PINRANGE(19, 191),
- COH901_PINRANGE(20, 186),
- COH901_PINRANGE(21, 185),
- COH901_PINRANGE(22, 184),
- COH901_PINRANGE(23, 183),
- COH901_PINRANGE(24, 182),
- COH901_PINRANGE(25, 181),
-};
-
-static int __init u300_gpio_probe(struct platform_device *pdev)
-{
- struct u300_gpio *gpio;
- struct gpio_irq_chip *girq;
- int err = 0;
- int portno;
- u32 val;
- u32 ifr;
- int i;
-
- gpio = devm_kzalloc(&pdev->dev, sizeof(struct u300_gpio), GFP_KERNEL);
- if (gpio == NULL)
- return -ENOMEM;
-
- gpio->chip = u300_gpio_chip;
- gpio->chip.ngpio = U300_GPIO_NUM_PORTS * U300_GPIO_PINS_PER_PORT;
- gpio->chip.parent = &pdev->dev;
- gpio->chip.base = 0;
- gpio->dev = &pdev->dev;
-
- gpio->base = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(gpio->base))
- return PTR_ERR(gpio->base);
-
- gpio->clk = devm_clk_get(gpio->dev, NULL);
- if (IS_ERR(gpio->clk)) {
- err = PTR_ERR(gpio->clk);
- dev_err(gpio->dev, "could not get GPIO clock\n");
- return err;
- }
-
- err = clk_prepare_enable(gpio->clk);
- if (err) {
- dev_err(gpio->dev, "could not enable GPIO clock\n");
- return err;
- }
-
- dev_info(gpio->dev,
- "initializing GPIO Controller COH 901 571/3\n");
- gpio->stride = U300_GPIO_PORT_STRIDE;
- gpio->pcr = U300_GPIO_PXPCR;
- gpio->dor = U300_GPIO_PXPDOR;
- gpio->dir = U300_GPIO_PXPDIR;
- gpio->per = U300_GPIO_PXPER;
- gpio->icr = U300_GPIO_PXICR;
- gpio->ien = U300_GPIO_PXIEN;
- gpio->iev = U300_GPIO_PXIEV;
- ifr = U300_GPIO_PXIFR;
-
- val = readl(gpio->base + U300_GPIO_CR);
- dev_info(gpio->dev, "COH901571/3 block version: %d, " \
- "number of cores: %d totalling %d pins\n",
- ((val & 0x000001FC) >> 2),
- ((val & 0x0000FE00) >> 9),
- ((val & 0x0000FE00) >> 9) * 8);
- writel(U300_GPIO_CR_BLOCK_CLKRQ_ENABLE,
- gpio->base + U300_GPIO_CR);
- u300_gpio_init_coh901571(gpio);
-
- girq = &gpio->chip.irq;
- girq->chip = &u300_gpio_irqchip;
- girq->parent_handler = u300_gpio_irq_handler;
- girq->num_parents = U300_GPIO_NUM_PORTS;
- girq->parents = devm_kcalloc(gpio->dev, U300_GPIO_NUM_PORTS,
- sizeof(*girq->parents),
- GFP_KERNEL);
- if (!girq->parents) {
- err = -ENOMEM;
- goto err_dis_clk;
- }
- for (portno = 0 ; portno < U300_GPIO_NUM_PORTS; portno++) {
- struct u300_gpio_port *port = &gpio->ports[portno];
-
- snprintf(port->name, 8, "gpio%d", portno);
- port->number = portno;
- port->gpio = gpio;
-
- port->irq = platform_get_irq(pdev, portno);
- girq->parents[portno] = port->irq;
-
- /* Turns off irq force (test register) for this port */
- writel(0x0, gpio->base + portno * gpio->stride + ifr);
- }
- girq->default_type = IRQ_TYPE_EDGE_FALLING;
- girq->handler = handle_simple_irq;
-#ifdef CONFIG_OF_GPIO
- gpio->chip.of_node = pdev->dev.of_node;
-#endif
- err = gpiochip_add_data(&gpio->chip, gpio);
- if (err) {
- dev_err(gpio->dev, "unable to add gpiochip: %d\n", err);
- goto err_dis_clk;
- }
-
- /*
- * Add pinctrl pin ranges, the pin controller must be registered
- * at this point
- */
- for (i = 0; i < ARRAY_SIZE(coh901_pintable); i++) {
- struct coh901_pinpair *p = &coh901_pintable[i];
-
- err = gpiochip_add_pin_range(&gpio->chip, "pinctrl-u300",
- p->offset, p->pin_base, 1);
- if (err)
- goto err_no_range;
- }
-
- platform_set_drvdata(pdev, gpio);
-
- return 0;
-
-err_no_range:
- gpiochip_remove(&gpio->chip);
-err_dis_clk:
- clk_disable_unprepare(gpio->clk);
- dev_err(&pdev->dev, "module ERROR:%d\n", err);
- return err;
-}
-
-static int __exit u300_gpio_remove(struct platform_device *pdev)
-{
- struct u300_gpio *gpio = platform_get_drvdata(pdev);
-
- /* Turn off the GPIO block */
- writel(0x00000000U, gpio->base + U300_GPIO_CR);
-
- gpiochip_remove(&gpio->chip);
- clk_disable_unprepare(gpio->clk);
- return 0;
-}
-
-static const struct of_device_id u300_gpio_match[] = {
- { .compatible = "stericsson,gpio-coh901" },
- {},
-};
-
-static struct platform_driver u300_gpio_driver = {
- .driver = {
- .name = "u300-gpio",
- .of_match_table = u300_gpio_match,
- },
- .remove = __exit_p(u300_gpio_remove),
-};
-
-static int __init u300_gpio_init(void)
-{
- return platform_driver_probe(&u300_gpio_driver, u300_gpio_probe);
-}
-
-static void __exit u300_gpio_exit(void)
-{
- platform_driver_unregister(&u300_gpio_driver);
-}
-
-arch_initcall(u300_gpio_init);
-module_exit(u300_gpio_exit);
-
-MODULE_AUTHOR("Linus Walleij <linus.walleij@...ricsson.com>");
-MODULE_DESCRIPTION("ST-Ericsson AB COH 901 335/COH 901 571/3 GPIO driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/pinctrl/pinctrl-coh901.h b/drivers/pinctrl/pinctrl-coh901.h
deleted file mode 100644
index ba2678665168..000000000000
--- a/drivers/pinctrl/pinctrl-coh901.h
+++ /dev/null
@@ -1,6 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-int u300_gpio_config_get(struct gpio_chip *chip,
- unsigned offset,
- unsigned long *config);
-int u300_gpio_config_set(struct gpio_chip *chip, unsigned offset,
- enum pin_config_param param);
--
2.29.2
Powered by blists - more mailing lists