From: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
The change adds an MFD cell driver for managing pin functions on
TI DS90Ux9xx de-/serializers.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
---
drivers/pinctrl/Kconfig | 11 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-ds90ux9xx.c | 970 ++++++++++++++++++++++++++++
3 files changed, 982 insertions(+)
create mode 100644 drivers/pinctrl/pinctrl-ds90ux9xx.c
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 978b2ed4d014..9350263cac4b 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -123,6 +123,17 @@ config PINCTRL_DIGICOLOR
select PINMUX
select GENERIC_PINCONF
+config PINCTRL_DS90UX9XX
+ tristate "TI DS90Ux9xx pin multiplexer and GPIO driver"
+ depends on MFD_DS90UX9XX
+ default MFD_DS90UX9XX
+ select GPIOLIB
+ select PINMUX
+ select GENERIC_PINCONF
+ help
+ Select this option to enable pinmux and GPIO bridge/controller
+ driver for the TI DS90Ux9xx de-/serializer chip family.
+
config PINCTRL_LANTIQ
bool
depends on LANTIQ
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 8e127bd8610f..34fc2dbfb9c1 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o
obj-$(CONFIG_PINCTRL_AMD) += pinctrl-amd.o
obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o
obj-$(CONFIG_PINCTRL_DIGICOLOR) += pinctrl-digicolor.o
+obj-$(CONFIG_PINCTRL_DS90UX9XX) += pinctrl-ds90ux9xx.o
obj-$(CONFIG_PINCTRL_FALCON) += pinctrl-falcon.o
obj-$(CONFIG_PINCTRL_GEMINI) += pinctrl-gemini.o
obj-$(CONFIG_PINCTRL_MAX77620) += pinctrl-max77620.o
diff --git a/drivers/pinctrl/pinctrl-ds90ux9xx.c b/drivers/pinctrl/pinctrl-ds90ux9xx.c
new file mode 100644
index 000000000000..7fdb5c15743a
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-ds90ux9xx.c
@@ -0,0 +1,970 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Pinmux and GPIO controller driver for TI DS90Ux9xx De-/Serializer hardware
+ *
+ * Copyright (c) 2017-2018 Mentor Graphics Inc.
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/mfd/ds90ux9xx.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+
+#include "pinctrl-utils.h"
+
+#define SER_REG_PIN_CTRL 0x12
+#define PIN_CTRL_RGB18 BIT(2)
+#define PIN_CTRL_I2S_DATA_ISLAND BIT(1)
+#define PIN_CTRL_I2S_CHANNEL_B (BIT(0) | BIT(3))
+
+#define SER_REG_I2S_SURROUND 0x1A
+#define PIN_CTRL_I2S_SURR_BIT BIT(0)
+
+#define DES_REG_INDIRECT_PASS 0x16
+
+#define OUTPUT_HIGH BIT(3)
+#define REMOTE_CONTROL BIT(2)
+#define DIR_INPUT BIT(1)
+#define ENABLE_GPIO BIT(0)
+
+#define GPIO_AS_INPUT (ENABLE_GPIO | DIR_INPUT)
+#define GPIO_AS_OUTPUT ENABLE_GPIO
+#define GPIO_OUTPUT_HIGH (GPIO_AS_OUTPUT | OUTPUT_HIGH)
+#define GPIO_OUTPUT_LOW GPIO_AS_OUTPUT
+#define GPIO_OUTPUT_REMOTE (GPIO_AS_OUTPUT | REMOTE_CONTROL)
+
+#define DS90UX9XX_MAX_GROUP_PINS 6
+
+struct ds90ux9xx_gpio {
+ const u8 cfg_reg;
+ const u8 cfg_mask;
+ const u8 stat_reg;
+ const u8 stat_bit;
+ const bool input;
+};
+
+#define DS90UX9XX_PIN_GPIO_SIMPLE(_cfg, _high, _input) \
+ { \
+ .cfg_reg = _cfg, \
+ .cfg_mask = _high ? 0xf0 : 0x0f, \
+ .stat_reg = 0x0, \
+ .stat_bit = 0x0, \
+ .input = _input ? true : false, \
+ }
+
+#define DS90UX9XX_PIN_GPIO(_cfg, _high, _stat, _bit) \
+ { \
+ .cfg_reg = _cfg, \
+ .cfg_mask = _high ? 0xf0 : 0x0f, \
+ .stat_reg = _stat, \
+ .stat_bit = BIT(_bit), \
+ .input = true, \
+ }
+
+enum ds90ux9xx_function {
+ DS90UX9XX_FUNC_NONE,
+ DS90UX9XX_FUNC_GPIO,
+ DS90UX9XX_FUNC_REMOTE,
+ DS90UX9XX_FUNC_PASS,
+ DS90UX9XX_FUNC_I2S_1,
+ DS90UX9XX_FUNC_I2S_2,
+ DS90UX9XX_FUNC_I2S_3,
+ DS90UX9XX_FUNC_I2S_4,
+ DS90UX9XX_FUNC_I2S_M,
+ DS90UX9XX_FUNC_PARALLEL,
+};
+
+struct ds90ux9xx_pin {
+ const unsigned int id;
+ const char *name;
+ const u32 func_mask;
+ const u8 pass_bit;
+ const struct ds90ux9xx_gpio gpio;
+};
+
+#define TO_BIT(_f) (DS90UX9XX_FUNC_##_f ? BIT(DS90UX9XX_FUNC_##_f) : 0)
+#define DS90UX9XX_GPIO(_pin, _name, _f1, _f2, _f3) \
+ [_pin] = { \
+ .id = _pin, \
+ .name = _name, \
+ .func_mask = TO_BIT(GPIO) | TO_BIT(_f2) | TO_BIT(_f3), \
+ .gpio = DS90UX9XX_PIN_##_f1, \
+ }
+
+#define DS90UX940_GPIO(_pin, _name, _f1, _f2, _f3, _pass) \
+ [_pin] = { \
+ .id = _pin, \
+ .name = _name, \
+ .func_mask = TO_BIT(GPIO) | TO_BIT(PASS) | \
+ TO_BIT(_f2) | TO_BIT(_f3), \
+ .pass_bit = BIT(_pass), \
+ .gpio = DS90UX9XX_PIN_##_f1, \
+ }
+
+struct ds90ux9xx_pinctrl_data {
+ const char *name;
+ const struct ds90ux9xx_pin *pins;
+ const struct pinctrl_pin_desc *pins_desc;
+ const unsigned int npins;
+ const enum ds90ux9xx_function *functions;
+ const unsigned int nfunctions;
+};
+
+static const struct pinctrl_pin_desc ds90ux925_926_pins_desc[] = {
+ PINCTRL_PIN(0, "gpio0"), /* DS90Ux925 pin 25, DS90Ux926 pin 41 */
+ PINCTRL_PIN(1, "gpio1"), /* DS90Ux925 pin 26, DS90Ux926 pin 40 */
+ PINCTRL_PIN(2, "gpio2"), /* DS90Ux925 pin 35, DS90Ux926 pin 28 */
+ PINCTRL_PIN(3, "gpio3"), /* DS90Ux925 pin 36, DS90Ux926 pin 27 */
+ PINCTRL_PIN(4, "gpio4"), /* DS90Ux925 pin 43, DS90Ux926 pin 19 */
+ PINCTRL_PIN(5, "gpio5"), /* DS90Ux925 pin 44, DS90Ux926 pin 18 */
+ PINCTRL_PIN(6, "gpio6"), /* DS90Ux925 pin 11, DS90Ux926 pin 45 */
+ PINCTRL_PIN(7, "gpio7"), /* DS90Ux925 pin 12, DS90Ux926 pin 30 */
+ PINCTRL_PIN(8, "gpio8"), /* DS90Ux925 pin 13, DS90Ux926 pin 1 */
+};
+
+static const struct pinctrl_pin_desc ds90ux927_928_pins_desc[] = {
+ PINCTRL_PIN(0, "gpio0"), /* DS90Ux927 pin 39, DS90Ux928 pin 14 */
+ PINCTRL_PIN(1, "gpio1"), /* DS90Ux927 pin 40, DS90Ux928 pin 13 */
+ PINCTRL_PIN(2, "gpio2"), /* DS90Ux927 pin 5, DS90Ux928 pin 37 */
+ PINCTRL_PIN(3, "gpio3"), /* DS90Ux927 pin 6, DS90Ux928 pin 36 */
+ PINCTRL_PIN(4, "gpio5"), /* DS90Ux927 pin 4, DS90Ux928 pin 3 */
+ PINCTRL_PIN(5, "gpio6"), /* DS90Ux927 pin 3, DS90Ux928 pin 7 */
+ PINCTRL_PIN(6, "gpio7"), /* DS90Ux927 pin 2, DS90Ux928 pin 10 */
+ PINCTRL_PIN(7, "gpio8"), /* DS90Ux927 pin 1, DS90Ux928 pin 8 */
+};
+
+static const struct pinctrl_pin_desc ds90ux940_pins_desc[] = {
+ PINCTRL_PIN(0, "gpio0"), /* DS90Ux940 pin 7 */
+ PINCTRL_PIN(1, "gpio1"), /* DS90Ux940 pin 8 */
+ PINCTRL_PIN(2, "gpio2"), /* DS90Ux940 pin 10 */
+ PINCTRL_PIN(3, "gpio3"), /* DS90Ux940 pin 9 */
+ PINCTRL_PIN(4, "gpio5"), /* DS90Ux940 pin 11 */
+ PINCTRL_PIN(5, "gpio6"), /* DS90Ux940 pin 12 */
+ PINCTRL_PIN(6, "gpio7"), /* DS90Ux940 pin 14 */
+ PINCTRL_PIN(7, "gpio8"), /* DS90Ux940 pin 13 */
+ PINCTRL_PIN(8, "gpio9"), /* DS90Ux940 pin 15 */
+};
+
+static const struct ds90ux9xx_pin ds90ux925_pins[] = {
+ DS90UX9XX_GPIO(0, "gpio0", GPIO_SIMPLE(0x0d, 0, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(1, "gpio1", GPIO_SIMPLE(0x0e, 0, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(2, "gpio2", GPIO_SIMPLE(0x0e, 1, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(3, "gpio3", GPIO_SIMPLE(0x0f, 0, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(4, "gpio4", GPIO_SIMPLE(0x0f, 1, 0), NONE, PARALLEL),
+ DS90UX9XX_GPIO(5, "gpio5", GPIO_SIMPLE(0x10, 0, 0), I2S_2, PARALLEL),
+ DS90UX9XX_GPIO(6, "gpio6", GPIO_SIMPLE(0x10, 1, 0), I2S_1, NONE),
+ DS90UX9XX_GPIO(7, "gpio7", GPIO_SIMPLE(0x11, 0, 0), I2S_1, NONE),
+ DS90UX9XX_GPIO(8, "gpio8", GPIO_SIMPLE(0x11, 1, 0), I2S_1, NONE),
+};
+
+static const struct ds90ux9xx_pin ds90ux926_pins[] = {
+ DS90UX9XX_GPIO(0, "gpio0", GPIO_SIMPLE(0x1d, 0, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(1, "gpio1", GPIO_SIMPLE(0x1e, 0, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(2, "gpio2", GPIO_SIMPLE(0x1e, 1, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(3, "gpio3", GPIO_SIMPLE(0x1f, 0, 1), REMOTE, PARALLEL),
+ DS90UX9XX_GPIO(4, "gpio4", GPIO_SIMPLE(0x1f, 1, 0), NONE, PARALLEL),
+ DS90UX9XX_GPIO(5, "gpio5", GPIO_SIMPLE(0x20, 0, 0), I2S_2, PARALLEL),
+ DS90UX9XX_GPIO(6, "gpio6", GPIO_SIMPLE(0x20, 1, 0), I2S_1, NONE),
+ DS90UX9XX_GPIO(7, "gpio7", GPIO_SIMPLE(0x21, 0, 0), I2S_1, NONE),
+ DS90UX9XX_GPIO(8, "gpio8", GPIO_SIMPLE(0x21, 1, 0), I2S_1, NONE),
+};
+
+static const struct ds90ux9xx_pin ds90ux927_pins[] = {
+ DS90UX9XX_GPIO(0, "gpio0", GPIO(0x0d, 0, 0x1c, 0), REMOTE, NONE),
+ DS90UX9XX_GPIO(1, "gpio1", GPIO(0x0e, 0, 0x1c, 1), REMOTE, NONE),
+ DS90UX9XX_GPIO(2, "gpio2", GPIO(0x0e, 1, 0x1c, 2), REMOTE, I2S_3),
+ DS90UX9XX_GPIO(3, "gpio3", GPIO(0x0f, 0, 0x1c, 3), REMOTE, I2S_4),
+ DS90UX9XX_GPIO(4, "gpio5", GPIO(0x10, 0, 0x1c, 5), NONE, I2S_2),
+ DS90UX9XX_GPIO(5, "gpio6", GPIO(0x10, 1, 0x1c, 6), NONE, I2S_1),
+ DS90UX9XX_GPIO(6, "gpio7", GPIO(0x11, 0, 0x1c, 7), NONE, I2S_1),
+ DS90UX9XX_GPIO(7, "gpio8", GPIO(0x11, 1, 0x1d, 0), NONE, I2S_1),
+};
+
+static const struct ds90ux9xx_pin ds90ux928_pins[] = {
+ DS90UX9XX_GPIO(0, "gpio0", GPIO(0x1d, 0, 0x6e, 0), REMOTE, I2S_M),
+ DS90UX9XX_GPIO(1, "gpio1", GPIO(0x1e, 0, 0x6e, 1), REMOTE, I2S_M),
+ DS90UX9XX_GPIO(2, "gpio2", GPIO(0x1e, 1, 0x6e, 2), REMOTE, I2S_3),
+ DS90UX9XX_GPIO(3, "gpio3", GPIO(0x1f, 0, 0x6e, 3), REMOTE, I2S_4),
+ DS90UX9XX_GPIO(4, "gpio5", GPIO(0x20, 0, 0x6e, 5), NONE, I2S_2),
+ DS90UX9XX_GPIO(5, "gpio6", GPIO(0x20, 1, 0x6e, 6), NONE, I2S_1),
+ DS90UX9XX_GPIO(6, "gpio7", GPIO(0x21, 0, 0x6e, 7), NONE, I2S_1),
+ DS90UX9XX_GPIO(7, "gpio8", GPIO(0x21, 1, 0x6f, 0), NONE, I2S_1),
+};
+
+static const struct ds90ux9xx_pin ds90ux940_pins[] = {
+ DS90UX940_GPIO(0, "gpio0", GPIO(0x1d, 0, 0x6e, 0), REMOTE, I2S_M, 1),
+ DS90UX9XX_GPIO(1, "gpio1", GPIO(0x1e, 0, 0x6e, 1), REMOTE, I2S_M),
+ DS90UX9XX_GPIO(2, "gpio2", GPIO(0x1e, 1, 0x6e, 2), REMOTE, I2S_3),
+ DS90UX940_GPIO(3, "gpio3", GPIO(0x1f, 0, 0x6e, 3), REMOTE, I2S_4, 2),
+ DS90UX9XX_GPIO(4, "gpio5", GPIO(0x20, 0, 0x6e, 5), NONE, I2S_2),
+ DS90UX9XX_GPIO(5, "gpio6", GPIO(0x20, 1, 0x6e, 6), NONE, I2S_1),
+ DS90UX9XX_GPIO(6, "gpio7", GPIO(0x21, 0, 0x6e, 7), NONE, I2S_1),
+ DS90UX9XX_GPIO(7, "gpio8", GPIO(0x21, 1, 0x6f, 0), NONE, I2S_1),
+ DS90UX9XX_GPIO(8, "gpio9", GPIO_SIMPLE(0x1a, 0, 1), NONE, I2S_M),
+};
+
+static const enum ds90ux9xx_function ds90ux925_926_pin_functions[] = {
+ DS90UX9XX_FUNC_GPIO,
+ DS90UX9XX_FUNC_REMOTE,
+ DS90UX9XX_FUNC_I2S_1,
+ DS90UX9XX_FUNC_I2S_2,
+ DS90UX9XX_FUNC_PARALLEL,
+};
+
+static const enum ds90ux9xx_function ds90ux927_pin_functions[] = {
+ DS90UX9XX_FUNC_GPIO,
+ DS90UX9XX_FUNC_REMOTE,
+ DS90UX9XX_FUNC_I2S_1,
+ DS90UX9XX_FUNC_I2S_2,
+ DS90UX9XX_FUNC_I2S_3,
+ DS90UX9XX_FUNC_I2S_4,
+};
+
+static const enum ds90ux9xx_function ds90ux928_pin_functions[] = {
+ DS90UX9XX_FUNC_GPIO,
+ DS90UX9XX_FUNC_REMOTE,
+ DS90UX9XX_FUNC_I2S_1,
+ DS90UX9XX_FUNC_I2S_2,
+ DS90UX9XX_FUNC_I2S_3,
+ DS90UX9XX_FUNC_I2S_4,
+ DS90UX9XX_FUNC_I2S_M,
+};
+
+static const enum ds90ux9xx_function ds90ux940_pin_functions[] = {
+ DS90UX9XX_FUNC_GPIO,
+ DS90UX9XX_FUNC_REMOTE,
+ DS90UX9XX_FUNC_PASS,
+ DS90UX9XX_FUNC_I2S_1,
+ DS90UX9XX_FUNC_I2S_2,
+ DS90UX9XX_FUNC_I2S_3,
+ DS90UX9XX_FUNC_I2S_4,
+ DS90UX9XX_FUNC_I2S_M,
+};
+
+static const struct ds90ux9xx_pinctrl_data ds90ux925_pinctrl = {
+ .name = "ds90ux925",
+ .pins_desc = ds90ux925_926_pins_desc,
+ .pins = ds90ux925_pins,
+ .npins = ARRAY_SIZE(ds90ux925_pins),
+ .functions = ds90ux925_926_pin_functions,
+ .nfunctions = ARRAY_SIZE(ds90ux925_926_pin_functions),
+};
+
+static const struct ds90ux9xx_pinctrl_data ds90ux926_pinctrl = {
+ .name = "ds90ux926",
+ .pins_desc = ds90ux925_926_pins_desc,
+ .pins = ds90ux926_pins,
+ .npins = ARRAY_SIZE(ds90ux926_pins),
+ .functions = ds90ux925_926_pin_functions,
+ .nfunctions = ARRAY_SIZE(ds90ux925_926_pin_functions),
+};
+
+static const struct ds90ux9xx_pinctrl_data ds90ux927_pinctrl = {
+ .name = "ds90ux927",
+ .pins_desc = ds90ux927_928_pins_desc,
+ .pins = ds90ux927_pins,
+ .npins = ARRAY_SIZE(ds90ux927_pins),
+ .functions = ds90ux927_pin_functions,
+ .nfunctions = ARRAY_SIZE(ds90ux927_pin_functions),
+};
+
+static const struct ds90ux9xx_pinctrl_data ds90ux928_pinctrl = {
+ .name = "ds90ux928",
+ .pins_desc = ds90ux927_928_pins_desc,
+ .pins = ds90ux928_pins,
+ .npins = ARRAY_SIZE(ds90ux928_pins),
+ .functions = ds90ux928_pin_functions,
+ .nfunctions = ARRAY_SIZE(ds90ux928_pin_functions),
+};
+
+static const struct ds90ux9xx_pinctrl_data ds90ux940_pinctrl = {
+ .name = "ds90ux940",
+ .pins_desc = ds90ux940_pins_desc,
+ .pins = ds90ux940_pins,
+ .npins = ARRAY_SIZE(ds90ux940_pins),
+ .functions = ds90ux940_pin_functions,
+ .nfunctions = ARRAY_SIZE(ds90ux940_pin_functions),
+};
+
+struct ds90ux9xx_pin_function {
+ enum ds90ux9xx_function id;
+ const char **groups;
+ unsigned int ngroups;
+};
+
+struct ds90ux9xx_pin_group {
+ const char *name;
+ unsigned int pins[DS90UX9XX_MAX_GROUP_PINS];
+ unsigned int npins;
+};
+
+struct ds90ux9xx_pinctrl {
+ struct device *dev;
+ struct regmap *regmap;
+
+ struct pinctrl_dev *pctrl;
+ struct pinctrl_desc desc;
+
+ struct ds90ux9xx_pin_function *functions;
+ unsigned int nfunctions;
+
+ struct ds90ux9xx_pin_group *groups;
+ unsigned int ngroups;
+
+ const struct ds90ux9xx_pin *pins;
+ unsigned int npins;
+
+ struct gpio_chip gpiochip;
+ unsigned int ngpios;
+};
+
+static const char *const ds90ux9xx_func_names[] = {
+ [DS90UX9XX_FUNC_NONE] = "none",
+ [DS90UX9XX_FUNC_GPIO] = "gpio",
+ [DS90UX9XX_FUNC_REMOTE] = "gpio-remote",
+ [DS90UX9XX_FUNC_PASS] = "pass",
+ [DS90UX9XX_FUNC_I2S_1] = "i2s-1",
+ [DS90UX9XX_FUNC_I2S_2] = "i2s-2",
+ [DS90UX9XX_FUNC_I2S_3] = "i2s-3",
+ [DS90UX9XX_FUNC_I2S_4] = "i2s-4",
+ [DS90UX9XX_FUNC_I2S_M] = "i2s-m",
+ [DS90UX9XX_FUNC_PARALLEL] = "parallel",
+};
+
+static bool ds90ux9xx_func_in_group(u32 func_mask, enum ds90ux9xx_function id)
+{
+ u32 mask = BIT(id);
+
+ if (id == DS90UX9XX_FUNC_I2S_4) {
+ mask |= BIT(DS90UX9XX_FUNC_I2S_3);
+ id = DS90UX9XX_FUNC_I2S_3;
+ }
+
+ if (id == DS90UX9XX_FUNC_I2S_3) {
+ mask |= BIT(DS90UX9XX_FUNC_I2S_2);
+ id = DS90UX9XX_FUNC_I2S_2;
+ }
+
+ if (id == DS90UX9XX_FUNC_I2S_2)
+ mask |= BIT(DS90UX9XX_FUNC_I2S_1);
+
+ return func_mask & mask;
+}
+
+static bool ds90ux9xx_pin_function(enum ds90ux9xx_function id)
+{
+ if (id == DS90UX9XX_FUNC_GPIO || id == DS90UX9XX_FUNC_REMOTE ||
+ id == DS90UX9XX_FUNC_PASS)
+ return true;
+
+ return false;
+}
+
+static int ds90ux9xx_populate_groups(struct ds90ux9xx_pinctrl *pctrl,
+ const struct ds90ux9xx_pinctrl_data *cfg)
+{
+ struct ds90ux9xx_pin_function *func;
+ struct ds90ux9xx_pin_group *group;
+ enum ds90ux9xx_function func_id;
+ unsigned int i, j, n;
+
+ pctrl->pins = cfg->pins;
+ pctrl->npins = cfg->npins;
+
+ /* Assert that only GPIO pins are muxed, it may be changed in future */
+ for (j = 0; j < pctrl->npins; j++)
+ if (!(pctrl->pins[j].func_mask & BIT(DS90UX9XX_FUNC_GPIO)))
+ return -EINVAL;
+
+ pctrl->ngpios = pctrl->npins;
+
+ pctrl->nfunctions = cfg->nfunctions;
+ pctrl->functions = devm_kcalloc(pctrl->dev, pctrl->nfunctions,
+ sizeof(*pctrl->functions), GFP_KERNEL);
+ if (!pctrl->functions)
+ return -ENOMEM;
+
+ for (i = 0; i < pctrl->nfunctions; i++) {
+ func = &pctrl->functions[i];
+ func->id = cfg->functions[i];
+
+ /*
+ * Number of pin groups is a sum of pins and pin group functions
+ */
+ if (ds90ux9xx_pin_function(func->id)) {
+ for (j = 0; j < pctrl->npins; j++) {
+ if (func->id == DS90UX9XX_FUNC_GPIO)
+ pctrl->ngroups++;
+
+ if (pctrl->pins[j].func_mask & BIT(func->id))
+ func->ngroups++;
+ }
+ } else {
+ pctrl->ngroups++;
+ func->ngroups = 1;
+ }
+
+ func->groups = devm_kcalloc(pctrl->dev, func->ngroups,
+ sizeof(*func->groups), GFP_KERNEL);
+ if (!func->groups)
+ return -ENOMEM;
+
+ if (ds90ux9xx_pin_function(func->id)) {
+ n = 0;
+ for (j = 0; j < pctrl->npins; j++)
+ if (pctrl->pins[j].func_mask & BIT(func->id))
+ func->groups[n++] = pctrl->pins[j].name;
+ } else {
+ /* Group name matches function name */
+ func->groups[0] = ds90ux9xx_func_names[func->id];
+ }
+ }
+
+ pctrl->groups = devm_kcalloc(pctrl->dev, pctrl->ngroups,
+ sizeof(*pctrl->groups), GFP_KERNEL);
+ if (!pctrl->groups)
+ return -ENOMEM;
+
+ /* Firstly scan for GPIOs as individual pin groups */
+ group = pctrl->groups;
+ for (i = 0; i < pctrl->npins; i++) {
+ group->name = pctrl->pins[i].name;
+ group->pins[0] = pctrl->pins[i].id;
+ group->npins = 1;
+ group++;
+ }
+
+ /* Now scan for the rest of pin groups, which has own functions */
+ for (i = 0; i < pctrl->nfunctions; i++) {
+ func_id = pctrl->functions[i].id;
+
+ /* Those pin groups were accounted above as pin functions */
+ if (ds90ux9xx_pin_function(func_id))
+ continue;
+
+ group->name = ds90ux9xx_func_names[func_id];
+ for (j = 0; j < pctrl->npins; j++) {
+ if (ds90ux9xx_func_in_group(pctrl->pins[j].func_mask,
+ func_id)) {
+ group->pins[group->npins] = pctrl->pins[j].id;
+ group->npins++;
+ }
+ }
+
+ group++;
+ }
+
+ return 0;
+}
+
+static int ds90ux9xx_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->ngroups;
+}
+
+static const char *ds90ux9xx_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned int group)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->groups[group].name;
+}
+
+static int ds90ux9xx_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned int group,
+ const unsigned int **pins,
+ unsigned int *num_pins)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ *pins = pctrl->groups[group].pins;
+ *num_pins = pctrl->groups[group].npins;
+
+ return 0;
+}
+
+static const struct pinctrl_ops ds90ux9xx_pinctrl_ops = {
+ .get_groups_count = ds90ux9xx_get_groups_count,
+ .get_group_name = ds90ux9xx_get_group_name,
+ .get_group_pins = ds90ux9xx_get_group_pins,
+ .dt_node_to_map = pinconf_generic_dt_node_to_map_all,
+ .dt_free_map = pinctrl_utils_free_map,
+};
+
+static int ds90ux9xx_get_funcs_count(struct pinctrl_dev *pctldev)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->nfunctions;
+}
+
+static const char *ds90ux9xx_get_func_name(struct pinctrl_dev *pctldev,
+ unsigned int function)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return ds90ux9xx_func_names[pctrl->functions[function].id];
+}
+
+static int ds90ux9xx_get_func_groups(struct pinctrl_dev *pctldev,
+ unsigned int function,
+ const char * const **groups,
+ unsigned int * const num_groups)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ *groups = pctrl->functions[function].groups;
+ *num_groups = pctrl->functions[function].ngroups;
+
+ return 0;
+}
+
+static int ds90ux9xx_gpio_read(struct ds90ux9xx_pinctrl *pctrl,
+ unsigned int offset, u8 *value)
+{
+ const struct ds90ux9xx_gpio *gpio;
+ unsigned int val;
+ int ret;
+
+ gpio = &pctrl->pins[offset].gpio;
+
+ ret = regmap_read(pctrl->regmap, gpio->cfg_reg, &val);
+ if (ret) {
+ dev_err(pctrl->dev, "Failed to read register %#x, gpio %d\n",
+ gpio->cfg_reg, offset);
+ return ret;
+ }
+
+ *value = val & gpio->cfg_mask;
+ if (gpio->cfg_mask == 0xf0)
+ *value >>= 4;
+
+ return 0;
+}
+
+static int ds90ux9xx_gpio_read_stat(struct ds90ux9xx_pinctrl *pctrl,
+ unsigned int offset, u8 *value)
+{
+ const struct ds90ux9xx_gpio *gpio;
+ unsigned int val;
+ int ret;
+
+ gpio = &pctrl->pins[offset].gpio;
+
+ if (!gpio->stat_bit)
+ return -EINVAL;
+
+ ret = regmap_read(pctrl->regmap, gpio->stat_reg, &val);
+ if (ret) {
+ dev_err(pctrl->dev, "Failed to read register %#x, gpio %d\n",
+ gpio->stat_reg, offset);
+ return ret;
+ }
+
+ *value = val & gpio->stat_bit;
+
+ return 0;
+}
+
+static int ds90ux9xx_gpio_write(struct ds90ux9xx_pinctrl *pctrl,
+ unsigned int offset, u8 value)
+{
+ const struct ds90ux9xx_gpio *gpio;
+ int ret;
+
+ gpio = &pctrl->pins[offset].gpio;
+
+ if (value & DIR_INPUT && !gpio->input)
+ return -EINVAL;
+
+ if (gpio->cfg_mask == 0xf0)
+ value <<= 4;
+
+ ret = regmap_update_bits(pctrl->regmap, gpio->cfg_reg,
+ gpio->cfg_mask, value);
+ if (ret)
+ dev_err(pctrl->dev, "Failed to modify register %#x, gpio %d\n",
+ gpio->cfg_reg, offset);
+
+ return ret;
+}
+
+static int ds90ux940_set_pass(struct ds90ux9xx_pinctrl *pctrl,
+ unsigned int pin, bool enable)
+{
+ u8 bit = pctrl->pins[pin].pass_bit;
+
+ return ds90ux9xx_update_bits_indirect(pctrl->dev->parent,
+ DES_REG_INDIRECT_PASS, bit, enable ? bit : 0x0);
+}
+
+static int ds90ux9xx_pinctrl_group_disable(struct ds90ux9xx_pinctrl *pctrl,
+ enum ds90ux9xx_function function,
+ unsigned int pin)
+{
+ int ret;
+
+ switch (function) {
+ case DS90UX9XX_FUNC_GPIO:
+ case DS90UX9XX_FUNC_REMOTE:
+ return ds90ux9xx_gpio_write(pctrl, pin, 0x0);
+ case DS90UX9XX_FUNC_PASS:
+ return ds90ux940_set_pass(pctrl, pin, false);
+ default:
+ break;
+ }
+
+ if (!ds90ux9xx_is_serializer(pctrl->dev->parent))
+ return 0;
+
+ switch (function) {
+ case DS90UX9XX_FUNC_PARALLEL:
+ return regmap_update_bits(pctrl->regmap, SER_REG_PIN_CTRL,
+ PIN_CTRL_RGB18, PIN_CTRL_RGB18);
+ case DS90UX9XX_FUNC_I2S_4:
+ case DS90UX9XX_FUNC_I2S_3:
+ ret = regmap_update_bits(pctrl->regmap, SER_REG_I2S_SURROUND,
+ PIN_CTRL_I2S_SURR_BIT, 0x0);
+ if (ret)
+ return ret;
+ /* Fall through */
+ case DS90UX9XX_FUNC_I2S_2:
+ return regmap_update_bits(pctrl->regmap, SER_REG_PIN_CTRL,
+ PIN_CTRL_I2S_CHANNEL_B, 0x0);
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int ds90ux9xx_pinctrl_group_enable(struct ds90ux9xx_pinctrl *pctrl,
+ enum ds90ux9xx_function function,
+ struct ds90ux9xx_pin_group *group)
+{
+ unsigned int pin = group->pins[0];
+ int ret;
+
+ switch (function) {
+ case DS90UX9XX_FUNC_GPIO:
+ /* Not all GPIOs can be set to input, fallback to output low */
+ ret = ds90ux9xx_gpio_write(pctrl, pin, GPIO_AS_INPUT);
+ if (ret < 0)
+ ret = ds90ux9xx_gpio_write(pctrl, pin, GPIO_OUTPUT_LOW);
+ return ret;
+ case DS90UX9XX_FUNC_REMOTE:
+ return ds90ux9xx_gpio_write(pctrl, pin, GPIO_OUTPUT_REMOTE);
+ case DS90UX9XX_FUNC_PASS:
+ return ds90ux940_set_pass(pctrl, pin, true);
+ default:
+ break;
+ }
+
+ if (!ds90ux9xx_is_serializer(pctrl->dev->parent))
+ return 0;
+
+ switch (function) {
+ case DS90UX9XX_FUNC_PARALLEL:
+ return regmap_update_bits(pctrl->regmap, SER_REG_PIN_CTRL,
+ PIN_CTRL_RGB18, 0x0);
+ case DS90UX9XX_FUNC_I2S_4:
+ case DS90UX9XX_FUNC_I2S_3:
+ ret = regmap_update_bits(pctrl->regmap, SER_REG_I2S_SURROUND,
+ PIN_CTRL_I2S_SURR_BIT,
+ PIN_CTRL_I2S_SURR_BIT);
+ if (ret)
+ return ret;
+ /* Fall through */
+ case DS90UX9XX_FUNC_I2S_2:
+ return regmap_update_bits(pctrl->regmap, SER_REG_PIN_CTRL,
+ PIN_CTRL_I2S_CHANNEL_B | PIN_CTRL_I2S_DATA_ISLAND,
+ PIN_CTRL_I2S_CHANNEL_B);
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int ds90ux9xx_pinctrl_func_enable(struct ds90ux9xx_pinctrl *pctrl,
+ enum ds90ux9xx_function function,
+ struct ds90ux9xx_pin_group *group)
+{
+ enum ds90ux9xx_function func;
+ unsigned int i, pin;
+ u32 func_mask;
+ int ret;
+
+ /* Disable probably enabled pin functions with pin resource conflicts */
+ for (i = 0; i < group->npins; i++) {
+ pin = group->pins[i];
+
+ func_mask = pctrl->pins[pin].func_mask & ~BIT(function);
+
+ /* Abandon remote GPIOs which are covered by GPIO function */
+ if (function == DS90UX9XX_FUNC_REMOTE)
+ func_mask &= ~BIT(DS90UX9XX_FUNC_GPIO);
+ else
+ func_mask &= ~BIT(DS90UX9XX_FUNC_REMOTE);
+
+ /* Zero to three possible conflicting pin functions */
+ while (func_mask) {
+ func = __ffs(func_mask);
+ func_mask &= ~BIT(func);
+ ret = ds90ux9xx_pinctrl_group_disable(pctrl, func, pin);
+ if (ret)
+ return ret;
+ }
+ }
+
+ return ds90ux9xx_pinctrl_group_enable(pctrl, function, group);
+}
+
+static int ds90ux9xx_set_mux(struct pinctrl_dev *pctldev,
+ unsigned int function, unsigned int group)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ enum ds90ux9xx_function func = pctrl->functions[function].id;
+ struct ds90ux9xx_pin_group *grp = &pctrl->groups[group];
+
+ return ds90ux9xx_pinctrl_func_enable(pctrl, func, grp);
+}
+
+static int ds90ux9xx_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned int offset)
+{
+ struct ds90ux9xx_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return ds90ux9xx_pinctrl_func_enable(pctrl, DS90UX9XX_FUNC_GPIO,
+ &pctrl->groups[offset]);
+}
+
+static const struct pinmux_ops ds90ux9xx_pinmux_ops = {
+ .get_functions_count = ds90ux9xx_get_funcs_count,
+ .get_function_name = ds90ux9xx_get_func_name,
+ .get_function_groups = ds90ux9xx_get_func_groups,
+ .set_mux = ds90ux9xx_set_mux,
+ .gpio_request_enable = ds90ux9xx_gpio_request_enable,
+ .strict = true,
+};
+
+static const struct pinctrl_desc ds90ux9xx_pinctrl_desc = {
+ .pctlops = &ds90ux9xx_pinctrl_ops,
+ .pmxops = &ds90ux9xx_pinmux_ops,
+};
+
+static int ds90ux9xx_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ struct ds90ux9xx_pinctrl *pctrl = gpiochip_get_data(chip);
+ int ret;
+ u8 val;
+
+ ret = ds90ux9xx_gpio_read(pctrl, offset, &val);
+ if (ret)
+ return ret;
+
+ if (!(val & DIR_INPUT))
+ return !!(val & OUTPUT_HIGH);
+
+ ret = ds90ux9xx_gpio_read_stat(pctrl, offset, &val);
+ if (ret)
+ return ret;
+
+ return !!val;
+}
+
+static void ds90ux9xx_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ struct ds90ux9xx_pinctrl *pctrl = gpiochip_get_data(chip);
+ u8 val = value ? GPIO_OUTPUT_HIGH : GPIO_OUTPUT_LOW;
+
+ ds90ux9xx_gpio_write(pctrl, offset, val);
+}
+
+static int ds90ux9xx_gpio_get_direction(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ struct ds90ux9xx_pinctrl *pctrl = gpiochip_get_data(chip);
+ int ret;
+ u8 val;
+
+ ret = ds90ux9xx_gpio_read(pctrl, offset, &val);
+ if (ret)
+ return ret;
+
+ return !!(val & DIR_INPUT);
+}
+
+static int ds90ux9xx_gpio_direction_input(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ struct ds90ux9xx_pinctrl *pctrl = gpiochip_get_data(chip);
+
+ return ds90ux9xx_gpio_write(pctrl, offset, GPIO_AS_INPUT);
+}
+
+static int ds90ux9xx_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ struct ds90ux9xx_pinctrl *pctrl = gpiochip_get_data(chip);
+ u8 val = value ? GPIO_OUTPUT_HIGH : GPIO_OUTPUT_LOW;
+
+ return ds90ux9xx_gpio_write(pctrl, offset, val);
+}
+
+static const struct gpio_chip ds90ux9xx_gpio_chip = {
+ .owner = THIS_MODULE,
+ .get = ds90ux9xx_gpio_get,
+ .set = ds90ux9xx_gpio_set,
+ .get_direction = ds90ux9xx_gpio_get_direction,
+ .direction_input = ds90ux9xx_gpio_direction_input,
+ .direction_output = ds90ux9xx_gpio_direction_output,
+ .base = -1,
+ .can_sleep = 1,
+ .of_gpio_n_cells = 2,
+ .of_xlate = of_gpio_simple_xlate,
+};
+
+static int ds90ux9xx_parse_dt_properties(struct ds90ux9xx_pinctrl *pctrl)
+{
+ struct device_node *np = pctrl->dev->of_node;
+ unsigned int val;
+
+ if (!ds90ux9xx_is_serializer(pctrl->dev->parent))
+ return 0;
+
+ /*
+ * Optionally set "Video Color Depth Mode" to RGB18 mode, it may be
+ * needed if DS90Ux927 serializer is paired with DS90Ux926 deserializer
+ * or if there is no pins conflicting with the "parallel" pin group
+ * to disable RGB24 mode implicitly.
+ */
+ if (of_property_read_bool(np, "ti,video-depth-18bit"))
+ val = PIN_CTRL_RGB18;
+ else
+ val = 0;
+
+ return regmap_update_bits(pctrl->regmap, SER_REG_PIN_CTRL,
+ PIN_CTRL_RGB18, val);
+}
+
+static void ds90ux9xx_get_data(struct ds90ux9xx_pinctrl *pctrl,
+ const struct ds90ux9xx_pinctrl_data **pctrl_data)
+{
+ enum ds90ux9xx_device_id id = ds90ux9xx_get_ic_type(pctrl->dev->parent);
+
+ switch (id) {
+ case TI_DS90UB925:
+ case TI_DS90UH925:
+ *pctrl_data = &ds90ux925_pinctrl;
+ break;
+ case TI_DS90UB927:
+ case TI_DS90UH927:
+ *pctrl_data = &ds90ux927_pinctrl;
+ break;
+ case TI_DS90UB926:
+ case TI_DS90UH926:
+ *pctrl_data = &ds90ux926_pinctrl;
+ break;
+ case TI_DS90UB928:
+ case TI_DS90UH928:
+ *pctrl_data = &ds90ux928_pinctrl;
+ break;
+ case TI_DS90UB940:
+ case TI_DS90UH940:
+ *pctrl_data = &ds90ux940_pinctrl;
+ break;
+ default:
+ dev_err(pctrl->dev, "Unsupported hardware id %d\n", id);
+ }
+}
+
+static int ds90ux9xx_pinctrl_probe(struct platform_device *pdev)
+{
+ const struct ds90ux9xx_pinctrl_data *pctrl_data;
+ struct ds90ux9xx_pinctrl *pctrl;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL);
+ if (!pctrl)
+ return -ENOMEM;
+
+ pctrl->dev = dev;
+ pctrl->regmap = dev_get_regmap(dev->parent, NULL);
+ if (!pctrl->regmap)
+ return -ENODEV;
+
+ pctrl_data = of_device_get_match_data(dev);
+ if (!pctrl_data)
+ ds90ux9xx_get_data(pctrl, &pctrl_data);
+
+ if (!pctrl_data)
+ return -ENODEV;
+
+ ret = ds90ux9xx_populate_groups(pctrl, pctrl_data);
+ if (ret)
+ return ret;
+
+ ret = ds90ux9xx_parse_dt_properties(pctrl);
+ if (ret)
+ return ret;
+
+ pctrl->desc = ds90ux9xx_pinctrl_desc;
+ pctrl->desc.name = pctrl_data->name;
+ pctrl->desc.pins = pctrl_data->pins_desc;
+ pctrl->desc.npins = pctrl_data->npins;
+
+ pctrl->pctrl = devm_pinctrl_register(dev, &pctrl->desc, pctrl);
+ if (IS_ERR(pctrl->pctrl))
+ return PTR_ERR(pctrl->pctrl);
+
+ platform_set_drvdata(pdev, pctrl);
+
+ pctrl->gpiochip = ds90ux9xx_gpio_chip;
+ pctrl->gpiochip.parent = dev;
+ pctrl->gpiochip.label = pctrl_data->name;
+ pctrl->gpiochip.ngpio = pctrl->ngpios;
+
+ if (of_property_read_bool(dev->of_node, "gpio-ranges")) {
+ pctrl->gpiochip.request = gpiochip_generic_request;
+ pctrl->gpiochip.free = gpiochip_generic_free;
+ }
+
+ return devm_gpiochip_add_data(dev, &pctrl->gpiochip, pctrl);
+}
+
+static const struct of_device_id ds90ux9xx_pinctrl_dt_ids[] = {
+ { .compatible = "ti,ds90ux9xx-pinctrl", },
+ { .compatible = "ti,ds90ux925-pinctrl", .data = &ds90ux925_pinctrl, },
+ { .compatible = "ti,ds90ux926-pinctrl", .data = &ds90ux926_pinctrl, },
+ { .compatible = "ti,ds90ux927-pinctrl", .data = &ds90ux927_pinctrl, },
+ { .compatible = "ti,ds90ux928-pinctrl", .data = &ds90ux928_pinctrl, },
+ { .compatible = "ti,ds90ux940-pinctrl", .data = &ds90ux940_pinctrl, },
+ { },
+};
+MODULE_DEVICE_TABLE(of, ds90ux9xx_pinctrl_dt_ids);
+
+static struct platform_driver ds90ux9xx_pinctrl_driver = {
+ .probe = ds90ux9xx_pinctrl_probe,
+ .driver = {
+ .name = "ds90ux9xx-pinctrl",
+ .of_match_table = ds90ux9xx_pinctrl_dt_ids,
+ },
+};
+module_platform_driver(ds90ux9xx_pinctrl_driver);
+
+MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>");
+MODULE_DESCRIPTION("TI DS90Ux9xx pinmux and GPIO controller driver");
+MODULE_LICENSE("GPL");
--
2.17.1
[PATCH 6/7] pinctrl: ds90ux9xx: add TI DS90Ux9xx pinmux and GPIO controller driver
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
- Subject: [PATCH 6/7] pinctrl: ds90ux9xx: add TI DS90Ux9xx pinmux and GPIO controller driver
- From: Vladimir Zapolskiy <vz@xxxxxxxxx>
- Date: Tue, 9 Oct 2018 00:12:04 +0300
- In-reply-to: <20181008211205.2900-1-vz@mleia.com>
- References: <20181008211205.2900-1-vz@mleia.com>
- Follow-Ups:
- References:
- [PATCH 0/7] mfd/pinctrl: add initial support of TI DS90Ux9xx ICs
- From: Vladimir Zapolskiy
- [PATCH 0/7] mfd/pinctrl: add initial support of TI DS90Ux9xx ICs
- Prev by Date: [PATCH 5/7] mfd: ds90ux9xx: add I2C bridge/alias and link connection driver
- Next by Date: [PATCH 4/7] mfd: ds90ux9xx: add TI DS90Ux9xx de-/serializer MFD driver
- Previous by thread: Re: [PATCH 5/7] mfd: ds90ux9xx: add I2C bridge/alias and link connection driver
- Next by thread: Re: [PATCH 6/7] pinctrl: ds90ux9xx: add TI DS90Ux9xx pinmux and GPIO controller driver
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