diff options
Diffstat (limited to 'target/linux/bcm63xx/patches-4.19/136-pinctrl-add-a-pincontrol-driver-for-BCM6358.patch')
-rw-r--r-- | target/linux/bcm63xx/patches-4.19/136-pinctrl-add-a-pincontrol-driver-for-BCM6358.patch | 436 |
1 files changed, 0 insertions, 436 deletions
diff --git a/target/linux/bcm63xx/patches-4.19/136-pinctrl-add-a-pincontrol-driver-for-BCM6358.patch b/target/linux/bcm63xx/patches-4.19/136-pinctrl-add-a-pincontrol-driver-for-BCM6358.patch deleted file mode 100644 index 87dc741e21..0000000000 --- a/target/linux/bcm63xx/patches-4.19/136-pinctrl-add-a-pincontrol-driver-for-BCM6358.patch +++ /dev/null @@ -1,436 +0,0 @@ -From fb00ef462f3f8b70ea8902151cc72810fe90b999 Mon Sep 17 00:00:00 2001 -From: Jonas Gorski <jonas.gorski@gmail.com> -Date: Fri, 24 Jun 2016 22:16:01 +0200 -Subject: [PATCH 07/16] pinctrl: add a pincontrol driver for BCM6358 - -Add a pincotrol driver for BCM6358. BCM6358 allow overlaying different -functions onto the GPIO pins. It does not support configuring individual -pins but only whole groups. These groups may overlap, and still require -the directions to be set correctly in the GPIO register. In addition the -functions register controls other, not directly mux related functions. - -Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> ---- - drivers/pinctrl/bcm63xx/Kconfig | 8 + - drivers/pinctrl/bcm63xx/Makefile | 1 + - drivers/pinctrl/bcm63xx/pinctrl-bcm6358.c | 393 ++++++++++++++++++++++++++++++ - 3 files changed, 402 insertions(+) - create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm6358.c - ---- a/drivers/pinctrl/bcm63xx/Kconfig -+++ b/drivers/pinctrl/bcm63xx/Kconfig -@@ -15,3 +15,11 @@ config PINCTRL_BCM6348 - select PINCONF - select PINCTRL_BCM63XX - select GENERIC_PINCONF -+ -+config PINCTRL_BCM6358 -+ bool "BCM6358 pincontrol driver" if COMPILE_TEST -+ select PINMUX -+ select PINCONF -+ select PINCTRL_BCM63XX -+ select GENERIC_PINCONF -+ select MFD_SYSCON ---- a/drivers/pinctrl/bcm63xx/Makefile -+++ b/drivers/pinctrl/bcm63xx/Makefile -@@ -1,3 +1,4 @@ - obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o - obj-$(CONFIG_PINCTRL_BCM6328) += pinctrl-bcm6328.o - obj-$(CONFIG_PINCTRL_BCM6348) += pinctrl-bcm6348.o -+obj-$(CONFIG_PINCTRL_BCM6358) += pinctrl-bcm6358.o ---- /dev/null -+++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm6358.c -@@ -0,0 +1,393 @@ -+/* -+ * This file is subject to the terms and conditions of the GNU General Public -+ * License. See the file "COPYING" in the main directory of this archive -+ * for more details. -+ * -+ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com> -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/bitops.h> -+#include <linux/gpio.h> -+#include <linux/gpio/driver.h> -+#include <linux/mfd/syscon.h> -+#include <linux/of.h> -+#include <linux/of_gpio.h> -+#include <linux/of_address.h> -+#include <linux/slab.h> -+#include <linux/regmap.h> -+#include <linux/platform_device.h> -+ -+#include <linux/pinctrl/pinconf.h> -+#include <linux/pinctrl/pinconf-generic.h> -+#include <linux/pinctrl/pinmux.h> -+#include <linux/pinctrl/machine.h> -+ -+#include "../core.h" -+#include "../pinctrl-utils.h" -+ -+#include "pinctrl-bcm63xx.h" -+ -+/* GPIO_MODE register */ -+#define BCM6358_MODE_MUX_NONE 0 -+ -+/* overlays on gpio pins */ -+#define BCM6358_MODE_MUX_EBI_CS BIT(5) -+#define BCM6358_MODE_MUX_UART1 BIT(6) -+#define BCM6358_MODE_MUX_SPI_CS BIT(7) -+#define BCM6358_MODE_MUX_ASYNC_MODEM BIT(8) -+#define BCM6358_MODE_MUX_LEGACY_LED BIT(9) -+#define BCM6358_MODE_MUX_SERIAL_LED BIT(10) -+#define BCM6358_MODE_MUX_LED BIT(11) -+#define BCM6358_MODE_MUX_UTOPIA BIT(12) -+#define BCM6358_MODE_MUX_CLKRST BIT(13) -+#define BCM6358_MODE_MUX_PWM_SYN_CLK BIT(14) -+#define BCM6358_MODE_MUX_SYS_IRQ BIT(15) -+ -+#define BCM6358_NGPIO 40 -+ -+struct bcm6358_pingroup { -+ const char *name; -+ const unsigned * const pins; -+ const unsigned num_pins; -+ -+ const u16 mode_val; -+ -+ /* non-GPIO function muxes require the gpio direction to be set */ -+ const u16 direction; -+}; -+ -+struct bcm6358_function { -+ const char *name; -+ const char * const *groups; -+ const unsigned num_groups; -+}; -+ -+struct bcm6358_pinctrl { -+ struct device *dev; -+ struct pinctrl_dev *pctldev; -+ struct pinctrl_desc desc; -+ -+ struct regmap_field *overlays; -+ -+ struct gpio_chip gpio[2]; -+}; -+ -+#define BCM6358_GPIO_PIN(a, b, bit1, bit2, bit3) \ -+ { \ -+ .number = a, \ -+ .name = b, \ -+ .drv_data = (void *)(BCM6358_MODE_MUX_##bit1 | \ -+ BCM6358_MODE_MUX_##bit2 | \ -+ BCM6358_MODE_MUX_##bit3), \ -+ } -+ -+static const struct pinctrl_pin_desc bcm6358_pins[] = { -+ BCM6358_GPIO_PIN(0, "gpio0", LED, NONE, NONE), -+ BCM6358_GPIO_PIN(1, "gpio1", LED, NONE, NONE), -+ BCM6358_GPIO_PIN(2, "gpio2", LED, NONE, NONE), -+ BCM6358_GPIO_PIN(3, "gpio3", LED, NONE, NONE), -+ PINCTRL_PIN(4, "gpio4"), -+ BCM6358_GPIO_PIN(5, "gpio5", SYS_IRQ, NONE, NONE), -+ BCM6358_GPIO_PIN(6, "gpio6", SERIAL_LED, NONE, NONE), -+ BCM6358_GPIO_PIN(7, "gpio7", SERIAL_LED, NONE, NONE), -+ BCM6358_GPIO_PIN(8, "gpio8", PWM_SYN_CLK, NONE, NONE), -+ BCM6358_GPIO_PIN(9, "gpio09", LEGACY_LED, NONE, NONE), -+ BCM6358_GPIO_PIN(10, "gpio10", LEGACY_LED, NONE, NONE), -+ BCM6358_GPIO_PIN(11, "gpio11", LEGACY_LED, NONE, NONE), -+ BCM6358_GPIO_PIN(12, "gpio12", LEGACY_LED, ASYNC_MODEM, UTOPIA), -+ BCM6358_GPIO_PIN(13, "gpio13", LEGACY_LED, ASYNC_MODEM, UTOPIA), -+ BCM6358_GPIO_PIN(14, "gpio14", LEGACY_LED, ASYNC_MODEM, UTOPIA), -+ BCM6358_GPIO_PIN(15, "gpio15", LEGACY_LED, ASYNC_MODEM, UTOPIA), -+ PINCTRL_PIN(16, "gpio16"), -+ PINCTRL_PIN(17, "gpio17"), -+ PINCTRL_PIN(18, "gpio18"), -+ PINCTRL_PIN(19, "gpio19"), -+ PINCTRL_PIN(20, "gpio20"), -+ PINCTRL_PIN(21, "gpio21"), -+ BCM6358_GPIO_PIN(22, "gpio22", UTOPIA, NONE, NONE), -+ BCM6358_GPIO_PIN(23, "gpio23", UTOPIA, NONE, NONE), -+ BCM6358_GPIO_PIN(24, "gpio24", UTOPIA, NONE, NONE), -+ BCM6358_GPIO_PIN(25, "gpio25", UTOPIA, NONE, NONE), -+ BCM6358_GPIO_PIN(26, "gpio26", UTOPIA, NONE, NONE), -+ BCM6358_GPIO_PIN(27, "gpio27", UTOPIA, NONE, NONE), -+ BCM6358_GPIO_PIN(28, "gpio28", UTOPIA, UART1, NONE), -+ BCM6358_GPIO_PIN(29, "gpio29", UTOPIA, UART1, NONE), -+ BCM6358_GPIO_PIN(30, "gpio30", UTOPIA, UART1, EBI_CS), -+ BCM6358_GPIO_PIN(31, "gpio31", UTOPIA, UART1, EBI_CS), -+ BCM6358_GPIO_PIN(32, "gpio32", SPI_CS, NONE, NONE), -+ BCM6358_GPIO_PIN(33, "gpio33", SPI_CS, NONE, NONE), -+ PINCTRL_PIN(34, "gpio34"), -+ PINCTRL_PIN(35, "gpio35"), -+ PINCTRL_PIN(36, "gpio36"), -+ PINCTRL_PIN(37, "gpio37"), -+ PINCTRL_PIN(38, "gpio38"), -+ PINCTRL_PIN(39, "gpio39"), -+}; -+ -+static unsigned ebi_cs_grp_pins[] = { 30, 31 }; -+ -+static unsigned uart1_grp_pins[] = { 28, 29, 30, 31 }; -+ -+static unsigned spi_cs_grp_pins[] = { 32, 33 }; -+ -+static unsigned async_modem_grp_pins[] = { 12, 13, 14, 15 }; -+ -+static unsigned serial_led_grp_pins[] = { 6, 7 }; -+ -+static unsigned legacy_led_grp_pins[] = { 9, 10, 11, 12, 13, 14, 15 }; -+ -+static unsigned led_grp_pins[] = { 0, 1, 2, 3 }; -+ -+static unsigned utopia_grp_pins[] = { -+ 12, 13, 14, 15, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, -+}; -+ -+static unsigned pwm_syn_clk_grp_pins[] = { 8 }; -+ -+static unsigned sys_irq_grp_pins[] = { 5 }; -+ -+#define BCM6358_GPIO_MUX_GROUP(n, bit, dir) \ -+ { \ -+ .name = #n, \ -+ .pins = n##_pins, \ -+ .num_pins = ARRAY_SIZE(n##_pins), \ -+ .mode_val = BCM6358_MODE_MUX_##bit, \ -+ .direction = dir, \ -+ } -+ -+static const struct bcm6358_pingroup bcm6358_groups[] = { -+ BCM6358_GPIO_MUX_GROUP(ebi_cs_grp, EBI_CS, 0x3), -+ BCM6358_GPIO_MUX_GROUP(uart1_grp, UART1, 0x2), -+ BCM6358_GPIO_MUX_GROUP(spi_cs_grp, SPI_CS, 0x6), -+ BCM6358_GPIO_MUX_GROUP(async_modem_grp, ASYNC_MODEM, 0x6), -+ BCM6358_GPIO_MUX_GROUP(legacy_led_grp, LEGACY_LED, 0x7f), -+ BCM6358_GPIO_MUX_GROUP(serial_led_grp, SERIAL_LED, 0x3), -+ BCM6358_GPIO_MUX_GROUP(led_grp, LED, 0xf), -+ BCM6358_GPIO_MUX_GROUP(utopia_grp, UTOPIA, 0x000f), -+ BCM6358_GPIO_MUX_GROUP(pwm_syn_clk_grp, PWM_SYN_CLK, 0x1), -+ BCM6358_GPIO_MUX_GROUP(sys_irq_grp, SYS_IRQ, 0x1), -+}; -+ -+static const char * const ebi_cs_groups[] = { -+ "ebi_cs_grp" -+}; -+ -+static const char * const uart1_groups[] = { -+ "uart1_grp" -+}; -+ -+static const char * const spi_cs_2_3_groups[] = { -+ "spi_cs_2_3_grp" -+}; -+ -+static const char * const async_modem_groups[] = { -+ "async_modem_grp" -+}; -+ -+static const char * const legacy_led_groups[] = { -+ "legacy_led_grp", -+}; -+ -+static const char * const serial_led_groups[] = { -+ "serial_led_grp", -+}; -+ -+static const char * const led_groups[] = { -+ "led_grp", -+}; -+ -+static const char * const clkrst_groups[] = { -+ "clkrst_grp", -+}; -+ -+static const char * const pwm_syn_clk_groups[] = { -+ "pwm_syn_clk_grp", -+}; -+ -+static const char * const sys_irq_groups[] = { -+ "sys_irq_grp", -+}; -+ -+#define BCM6358_FUN(n) \ -+ { \ -+ .name = #n, \ -+ .groups = n##_groups, \ -+ .num_groups = ARRAY_SIZE(n##_groups), \ -+ } -+ -+static const struct bcm6358_function bcm6358_funcs[] = { -+ BCM6358_FUN(ebi_cs), -+ BCM6358_FUN(uart1), -+ BCM6358_FUN(spi_cs_2_3), -+ BCM6358_FUN(async_modem), -+ BCM6358_FUN(legacy_led), -+ BCM6358_FUN(serial_led), -+ BCM6358_FUN(led), -+ BCM6358_FUN(clkrst), -+ BCM6358_FUN(pwm_syn_clk), -+ BCM6358_FUN(sys_irq), -+}; -+ -+static int bcm6358_pinctrl_get_group_count(struct pinctrl_dev *pctldev) -+{ -+ return ARRAY_SIZE(bcm6358_groups); -+} -+ -+static const char *bcm6358_pinctrl_get_group_name(struct pinctrl_dev *pctldev, -+ unsigned group) -+{ -+ return bcm6358_groups[group].name; -+} -+ -+static int bcm6358_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, -+ unsigned group, const unsigned **pins, -+ unsigned *num_pins) -+{ -+ *pins = bcm6358_groups[group].pins; -+ *num_pins = bcm6358_groups[group].num_pins; -+ -+ return 0; -+} -+ -+static int bcm6358_pinctrl_get_func_count(struct pinctrl_dev *pctldev) -+{ -+ return ARRAY_SIZE(bcm6358_funcs); -+} -+ -+static const char *bcm6358_pinctrl_get_func_name(struct pinctrl_dev *pctldev, -+ unsigned selector) -+{ -+ return bcm6358_funcs[selector].name; -+} -+ -+static int bcm6358_pinctrl_get_groups(struct pinctrl_dev *pctldev, -+ unsigned selector, -+ const char * const **groups, -+ unsigned * const num_groups) -+{ -+ *groups = bcm6358_funcs[selector].groups; -+ *num_groups = bcm6358_funcs[selector].num_groups; -+ -+ return 0; -+} -+ -+static int bcm6358_pinctrl_set_mux(struct pinctrl_dev *pctldev, -+ unsigned selector, unsigned group) -+{ -+ struct bcm6358_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); -+ const struct bcm6358_pingroup *grp = &bcm6358_groups[group]; -+ u32 val = grp->mode_val; -+ u32 mask = val; -+ unsigned pin; -+ -+ for (pin = 0; pin < grp->num_pins; pin++) -+ mask |= (unsigned long)bcm6358_pins[pin].drv_data; -+ -+ regmap_field_update_bits(pctl->overlays, mask, val); -+ -+ for (pin = 0; pin < grp->num_pins; pin++) { -+ int hw_gpio = bcm6358_pins[pin].number; -+ struct gpio_chip *gc = &pctl->gpio[hw_gpio / 32]; -+ -+ if (grp->direction & BIT(pin)) -+ gc->direction_output(gc, hw_gpio % 32, 0); -+ else -+ gc->direction_input(gc, hw_gpio % 32); -+ } -+ -+ return 0; -+} -+ -+static int bcm6358_gpio_request_enable(struct pinctrl_dev *pctldev, -+ struct pinctrl_gpio_range *range, -+ unsigned offset) -+{ -+ struct bcm6358_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); -+ u32 mask; -+ -+ mask = (unsigned long)bcm6358_pins[offset].drv_data; -+ if (!mask) -+ return 0; -+ -+ /* disable all functions using this pin */ -+ return regmap_field_update_bits(pctl->overlays, mask, 0); -+} -+ -+static struct pinctrl_ops bcm6358_pctl_ops = { -+ .get_groups_count = bcm6358_pinctrl_get_group_count, -+ .get_group_name = bcm6358_pinctrl_get_group_name, -+ .get_group_pins = bcm6358_pinctrl_get_group_pins, -+#ifdef CONFIG_OF -+ .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, -+ .dt_free_map = pinctrl_utils_free_map, -+#endif -+}; -+ -+static struct pinmux_ops bcm6358_pmx_ops = { -+ .get_functions_count = bcm6358_pinctrl_get_func_count, -+ .get_function_name = bcm6358_pinctrl_get_func_name, -+ .get_function_groups = bcm6358_pinctrl_get_groups, -+ .set_mux = bcm6358_pinctrl_set_mux, -+ .gpio_request_enable = bcm6358_gpio_request_enable, -+ .strict = true, -+}; -+ -+static int bcm6358_pinctrl_probe(struct platform_device *pdev) -+{ -+ struct bcm6358_pinctrl *pctl; -+ struct regmap *mode; -+ struct reg_field overlays = REG_FIELD(0, 0, 15); -+ -+ if (pdev->dev.of_node) -+ mode = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, -+ "brcm,gpiomode"); -+ else -+ mode = syscon_regmap_lookup_by_pdevname("syscon.fffe0098"); -+ -+ if (IS_ERR(mode)) -+ return PTR_ERR(mode); -+ -+ pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL); -+ if (!pctl) -+ return -ENOMEM; -+ -+ pctl->overlays = devm_regmap_field_alloc(&pdev->dev, mode, overlays); -+ if (IS_ERR(pctl->overlays)) -+ return PTR_ERR(pctl->overlays); -+ -+ /* disable all muxes by default */ -+ regmap_field_write(pctl->overlays, 0); -+ -+ pctl->desc.name = dev_name(&pdev->dev); -+ pctl->desc.owner = THIS_MODULE; -+ pctl->desc.pctlops = &bcm6358_pctl_ops; -+ pctl->desc.pmxops = &bcm6358_pmx_ops; -+ -+ pctl->desc.npins = ARRAY_SIZE(bcm6358_pins); -+ pctl->desc.pins = bcm6358_pins; -+ -+ platform_set_drvdata(pdev, pctl); -+ -+ pctl->pctldev = bcm63xx_pinctrl_register(pdev, &pctl->desc, pctl, -+ pctl->gpio, BCM6358_NGPIO); -+ if (IS_ERR(pctl->pctldev)) -+ return PTR_ERR(pctl->pctldev); -+ -+ return 0; -+} -+ -+static const struct of_device_id bcm6358_pinctrl_match[] = { -+ { .compatible = "brcm,bcm6358-pinctrl", }, -+ { }, -+}; -+ -+static struct platform_driver bcm6358_pinctrl_driver = { -+ .probe = bcm6358_pinctrl_probe, -+ .driver = { -+ .name = "bcm6358-pinctrl", -+ .of_match_table = bcm6358_pinctrl_match, -+ }, -+}; -+ -+builtin_platform_driver(bcm6358_pinctrl_driver); |