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openwrtv3/target/linux/brcm63xx/patches-4.14/142-pinctrl-add-a-pincontrol-driver-for-BCM63268.patch

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brcm63xx: add kernel 4.14 support Add support for kernel 4.14. Increases compressed kernel size by ~64k compared to 4.9. Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2018-01-13 17:43:32 +00:00
From 8665d3ea63649cc155286c75f83f694a930580e5 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Fri, 24 Jun 2016 22:19:12 +0200
Subject: [PATCH 13/16] pinctrl: add a pincontrol driver for BCM63268
Add a pincontrol driver for BCM63268. BCM63268 allows muxing GPIOs
to different functions. Depending on the mux, these are either single
pin configurations or whole pin groups.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
drivers/pinctrl/bcm63xx/Makefile | 1 +
drivers/pinctrl/bcm63xx/pinctrl-bcm63268.c | 710 +++++++++++++++++++++++++++++
2 files changed, 711 insertions(+)
create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm63268.c
--- a/drivers/pinctrl/bcm63xx/Makefile
+++ b/drivers/pinctrl/bcm63xx/Makefile
@@ -4,3 +4,4 @@ obj-$(CONFIG_PINCTRL_BCM6348) += pinctrl
obj-$(CONFIG_PINCTRL_BCM6358) += pinctrl-bcm6358.o
obj-$(CONFIG_PINCTRL_BCM6362) += pinctrl-bcm6362.o
obj-$(CONFIG_PINCTRL_BCM6368) += pinctrl-bcm6368.o
+obj-$(CONFIG_PINCTRL_BCM63268) += pinctrl-bcm63268.o
--- /dev/null
+++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm63268.c
@@ -0,0 +1,710 @@
+/*
+ * 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/spinlock.h>
+#include <linux/bitops.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.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"
+
+#define BCM63268_NGPIO 52
+
+/* GPIO_BASEMODE register */
+#define BASEMODE_NAND BIT(2) /* GPIOs 2-7, 24-31 */
+#define BASEMODE_GPIO35 BIT(4) /* GPIO 35 */
+#define BASEMODE_DECTPD BIT(5) /* GPIOs 8/9 */
+#define BASEMODE_VDSL_PHY_0 BIT(6) /* GPIOs 10/11 */
+#define BASEMODE_VDSL_PHY_1 BIT(7) /* GPIOs 12/13 */
+#define BASEMODE_VDSL_PHY_2 BIT(8) /* GPIOs 24/25 */
+#define BASEMODE_VDSL_PHY_3 BIT(9) /* GPIOs 26/27 */
+
+enum bcm63268_pinctrl_reg {
+ BCM63268_LEDCTRL,
+ BCM63268_MODE,
+ BCM63268_CTRL,
+ BCM63268_BASEMODE,
+};
+
+struct bcm63268_pingroup {
+ const char *name;
+ const unsigned * const pins;
+ const unsigned num_pins;
+};
+
+struct bcm63268_function {
+ const char *name;
+ const char * const *groups;
+ const unsigned num_groups;
+
+ enum bcm63268_pinctrl_reg reg;
+ u32 mask;
+};
+
+struct bcm63268_pinctrl {
+ struct pinctrl_dev *pctldev;
+ struct pinctrl_desc desc;
+
+ void __iomem *led;
+ void __iomem *mode;
+ void __iomem *ctrl;
+ void __iomem *basemode;
+
+ /* register access lock */
+ spinlock_t lock;
+
+ struct gpio_chip gpio[2];
+};
+
+#define BCM63268_PIN(a, b, basemode) \
+ { \
+ .number = a, \
+ .name = b, \
+ .drv_data = (void *)(basemode) \
+ }
+
+static const struct pinctrl_pin_desc bcm63268_pins[] = {
+ PINCTRL_PIN(0, "gpio0"),
+ PINCTRL_PIN(1, "gpio1"),
+ BCM63268_PIN(2, "gpio2", BASEMODE_NAND),
+ BCM63268_PIN(3, "gpio3", BASEMODE_NAND),
+ BCM63268_PIN(4, "gpio4", BASEMODE_NAND),
+ BCM63268_PIN(5, "gpio5", BASEMODE_NAND),
+ BCM63268_PIN(6, "gpio6", BASEMODE_NAND),
+ BCM63268_PIN(7, "gpio7", BASEMODE_NAND),
+ BCM63268_PIN(8, "gpio8", BASEMODE_DECTPD),
+ BCM63268_PIN(9, "gpio9", BASEMODE_DECTPD),
+ BCM63268_PIN(10, "gpio10", BASEMODE_VDSL_PHY_0),
+ BCM63268_PIN(11, "gpio11", BASEMODE_VDSL_PHY_0),
+ BCM63268_PIN(12, "gpio12", BASEMODE_VDSL_PHY_1),
+ BCM63268_PIN(13, "gpio13", BASEMODE_VDSL_PHY_1),
+ PINCTRL_PIN(14, "gpio14"),
+ PINCTRL_PIN(15, "gpio15"),
+ PINCTRL_PIN(16, "gpio16"),
+ PINCTRL_PIN(17, "gpio17"),
+ PINCTRL_PIN(18, "gpio18"),
+ PINCTRL_PIN(19, "gpio19"),
+ PINCTRL_PIN(20, "gpio20"),
+ PINCTRL_PIN(21, "gpio21"),
+ PINCTRL_PIN(22, "gpio22"),
+ PINCTRL_PIN(23, "gpio23"),
+ BCM63268_PIN(24, "gpio24", BASEMODE_NAND | BASEMODE_VDSL_PHY_2),
+ BCM63268_PIN(25, "gpio25", BASEMODE_NAND | BASEMODE_VDSL_PHY_2),
+ BCM63268_PIN(26, "gpio26", BASEMODE_NAND | BASEMODE_VDSL_PHY_3),
+ BCM63268_PIN(27, "gpio27", BASEMODE_NAND | BASEMODE_VDSL_PHY_3),
+ BCM63268_PIN(28, "gpio28", BASEMODE_NAND),
+ BCM63268_PIN(29, "gpio29", BASEMODE_NAND),
+ BCM63268_PIN(30, "gpio30", BASEMODE_NAND),
+ BCM63268_PIN(31, "gpio31", BASEMODE_NAND),
+ PINCTRL_PIN(32, "gpio32"),
+ PINCTRL_PIN(33, "gpio33"),
+ PINCTRL_PIN(34, "gpio34"),
+ PINCTRL_PIN(35, "gpio35"),
+ PINCTRL_PIN(36, "gpio36"),
+ PINCTRL_PIN(37, "gpio37"),
+ PINCTRL_PIN(38, "gpio38"),
+ PINCTRL_PIN(39, "gpio39"),
+ PINCTRL_PIN(40, "gpio40"),
+ PINCTRL_PIN(41, "gpio41"),
+ PINCTRL_PIN(42, "gpio42"),
+ PINCTRL_PIN(43, "gpio43"),
+ PINCTRL_PIN(44, "gpio44"),
+ PINCTRL_PIN(45, "gpio45"),
+ PINCTRL_PIN(46, "gpio46"),
+ PINCTRL_PIN(47, "gpio47"),
+ PINCTRL_PIN(48, "gpio48"),
+ PINCTRL_PIN(49, "gpio49"),
+ PINCTRL_PIN(50, "gpio50"),
+ PINCTRL_PIN(51, "gpio51"),
+};
+
+static unsigned gpio0_pins[] = { 0 };
+static unsigned gpio1_pins[] = { 1 };
+static unsigned gpio2_pins[] = { 2 };
+static unsigned gpio3_pins[] = { 3 };
+static unsigned gpio4_pins[] = { 4 };
+static unsigned gpio5_pins[] = { 5 };
+static unsigned gpio6_pins[] = { 6 };
+static unsigned gpio7_pins[] = { 7 };
+static unsigned gpio8_pins[] = { 8 };
+static unsigned gpio9_pins[] = { 9 };
+static unsigned gpio10_pins[] = { 10 };
+static unsigned gpio11_pins[] = { 11 };
+static unsigned gpio12_pins[] = { 12 };
+static unsigned gpio13_pins[] = { 13 };
+static unsigned gpio14_pins[] = { 14 };
+static unsigned gpio15_pins[] = { 15 };
+static unsigned gpio16_pins[] = { 16 };
+static unsigned gpio17_pins[] = { 17 };
+static unsigned gpio18_pins[] = { 18 };
+static unsigned gpio19_pins[] = { 19 };
+static unsigned gpio20_pins[] = { 20 };
+static unsigned gpio21_pins[] = { 21 };
+static unsigned gpio22_pins[] = { 22 };
+static unsigned gpio23_pins[] = { 23 };
+static unsigned gpio24_pins[] = { 24 };
+static unsigned gpio25_pins[] = { 25 };
+static unsigned gpio26_pins[] = { 26 };
+static unsigned gpio27_pins[] = { 27 };
+static unsigned gpio28_pins[] = { 28 };
+static unsigned gpio29_pins[] = { 29 };
+static unsigned gpio30_pins[] = { 30 };
+static unsigned gpio31_pins[] = { 31 };
+static unsigned gpio32_pins[] = { 32 };
+static unsigned gpio33_pins[] = { 33 };
+static unsigned gpio34_pins[] = { 34 };
+static unsigned gpio35_pins[] = { 35 };
+static unsigned gpio36_pins[] = { 36 };
+static unsigned gpio37_pins[] = { 37 };
+static unsigned gpio38_pins[] = { 38 };
+static unsigned gpio39_pins[] = { 39 };
+static unsigned gpio40_pins[] = { 40 };
+static unsigned gpio41_pins[] = { 41 };
+static unsigned gpio42_pins[] = { 42 };
+static unsigned gpio43_pins[] = { 43 };
+static unsigned gpio44_pins[] = { 44 };
+static unsigned gpio45_pins[] = { 45 };
+static unsigned gpio46_pins[] = { 46 };
+static unsigned gpio47_pins[] = { 47 };
+static unsigned gpio48_pins[] = { 48 };
+static unsigned gpio49_pins[] = { 49 };
+static unsigned gpio50_pins[] = { 50 };
+static unsigned gpio51_pins[] = { 51 };
+
+static unsigned nand_grp_pins[] = {
+ 2, 3, 4, 5, 6, 7, 24,
+ 25, 26, 27, 28, 29, 30, 31,
+};
+
+static unsigned dectpd_grp_pins[] = { 8, 9 };
+static unsigned vdsl_phy0_grp_pins[] = { 10, 11 };
+static unsigned vdsl_phy1_grp_pins[] = { 12, 13 };
+static unsigned vdsl_phy2_grp_pins[] = { 24, 25 };
+static unsigned vdsl_phy3_grp_pins[] = { 26, 27 };
+
+#define BCM63268_GROUP(n) \
+ { \
+ .name = #n, \
+ .pins = n##_pins, \
+ .num_pins = ARRAY_SIZE(n##_pins), \
+ }
+
+static struct bcm63268_pingroup bcm63268_groups[] = {
+ BCM63268_GROUP(gpio0),
+ BCM63268_GROUP(gpio1),
+ BCM63268_GROUP(gpio2),
+ BCM63268_GROUP(gpio3),
+ BCM63268_GROUP(gpio4),
+ BCM63268_GROUP(gpio5),
+ BCM63268_GROUP(gpio6),
+ BCM63268_GROUP(gpio7),
+ BCM63268_GROUP(gpio8),
+ BCM63268_GROUP(gpio9),
+ BCM63268_GROUP(gpio10),
+ BCM63268_GROUP(gpio11),
+ BCM63268_GROUP(gpio12),
+ BCM63268_GROUP(gpio13),
+ BCM63268_GROUP(gpio14),
+ BCM63268_GROUP(gpio15),
+ BCM63268_GROUP(gpio16),
+ BCM63268_GROUP(gpio17),
+ BCM63268_GROUP(gpio18),
+ BCM63268_GROUP(gpio19),
+ BCM63268_GROUP(gpio20),
+ BCM63268_GROUP(gpio21),
+ BCM63268_GROUP(gpio22),
+ BCM63268_GROUP(gpio23),
+ BCM63268_GROUP(gpio24),
+ BCM63268_GROUP(gpio25),
+ BCM63268_GROUP(gpio26),
+ BCM63268_GROUP(gpio27),
+ BCM63268_GROUP(gpio28),
+ BCM63268_GROUP(gpio29),
+ BCM63268_GROUP(gpio30),
+ BCM63268_GROUP(gpio31),
+ BCM63268_GROUP(gpio32),
+ BCM63268_GROUP(gpio33),
+ BCM63268_GROUP(gpio34),
+ BCM63268_GROUP(gpio35),
+ BCM63268_GROUP(gpio36),
+ BCM63268_GROUP(gpio37),
+ BCM63268_GROUP(gpio38),
+ BCM63268_GROUP(gpio39),
+ BCM63268_GROUP(gpio40),
+ BCM63268_GROUP(gpio41),
+ BCM63268_GROUP(gpio42),
+ BCM63268_GROUP(gpio43),
+ BCM63268_GROUP(gpio44),
+ BCM63268_GROUP(gpio45),
+ BCM63268_GROUP(gpio46),
+ BCM63268_GROUP(gpio47),
+ BCM63268_GROUP(gpio48),
+ BCM63268_GROUP(gpio49),
+ BCM63268_GROUP(gpio50),
+ BCM63268_GROUP(gpio51),
+
+ /* multi pin groups */
+ BCM63268_GROUP(nand_grp),
+ BCM63268_GROUP(dectpd_grp),
+ BCM63268_GROUP(vdsl_phy0_grp),
+ BCM63268_GROUP(vdsl_phy1_grp),
+ BCM63268_GROUP(vdsl_phy2_grp),
+ BCM63268_GROUP(vdsl_phy3_grp),
+};
+
+static const char * const led_groups[] = {
+ "gpio0",
+ "gpio1",
+ "gpio2",
+ "gpio3",
+ "gpio4",
+ "gpio5",
+ "gpio6",
+ "gpio7",
+ "gpio8",
+ "gpio9",
+ "gpio10",
+ "gpio11",
+ "gpio12",
+ "gpio13",
+ "gpio14",
+ "gpio15",
+ "gpio16",
+ "gpio17",
+ "gpio18",
+ "gpio19",
+ "gpio20",
+ "gpio21",
+ "gpio22",
+ "gpio23",
+};
+
+static const char * const serial_led_clk_groups[] = {
+ "gpio0",
+};
+
+static const char * const serial_led_data_groups[] = {
+ "gpio1",
+};
+
+static const char * const hsspi_cs4_groups[] = {
+ "gpio16",
+};
+
+static const char * const hsspi_cs5_groups[] = {
+ "gpio17",
+};
+
+static const char * const hsspi_cs6_groups[] = {
+ "gpio8",
+};
+
+static const char * const hsspi_cs7_groups[] = {
+ "gpio9",
+};
+
+static const char * const uart1_scts_groups[] = {
+ "gpio10",
+ "gpio24",
+};
+
+static const char * const uart1_srts_groups[] = {
+ "gpio11",
+ "gpio25",
+};
+
+static const char * const uart1_sdin_groups[] = {
+ "gpio12",
+ "gpio26",
+};
+
+static const char * const uart1_sdout_groups[] = {
+ "gpio13",
+ "gpio27",
+};
+
+static const char * const ntr_pulse_in_groups[] = {
+ "gpio14",
+ "gpio28",
+};
+
+static const char * const dsl_ntr_pulse_out_groups[] = {
+ "gpio15",
+ "gpio29",
+};
+
+static const char * const adsl_spi_miso_groups[] = {
+ "gpio18",
+};
+
+static const char * const adsl_spi_mosi_groups[] = {
+ "gpio19",
+};
+
+static const char * const vreg_clk_groups[] = {
+ "gpio22",
+};
+
+static const char * const pcie_clkreq_b_groups[] = {
+ "gpio23",
+};
+
+static const char * const switch_led_clk_groups[] = {
+ "gpio30",
+};
+
+static const char * const switch_led_data_groups[] = {
+ "gpio31",
+};
+
+static const char * const wifi_groups[] = {
+ "gpio32",
+ "gpio33",
+ "gpio34",
+ "gpio35",
+ "gpio36",
+ "gpio37",
+ "gpio38",
+ "gpio39",
+ "gpio40",
+ "gpio41",
+ "gpio42",
+ "gpio43",
+ "gpio44",
+ "gpio45",
+ "gpio46",
+ "gpio47",
+ "gpio48",
+ "gpio49",
+ "gpio50",
+ "gpio51",
+};
+
+static const char * const nand_groups[] = {
+ "nand_grp",
+};
+
+static const char * const dectpd_groups[] = {
+ "dectpd_grp",
+};
+
+static const char * const vdsl_phy_override_0_groups[] = {
+ "vdsl_phy_override_0_grp",
+};
+
+static const char * const vdsl_phy_override_1_groups[] = {
+ "vdsl_phy_override_1_grp",
+};
+
+static const char * const vdsl_phy_override_2_groups[] = {
+ "vdsl_phy_override_2_grp",
+};
+
+static const char * const vdsl_phy_override_3_groups[] = {
+ "vdsl_phy_override_3_grp",
+};
+
+#define BCM63268_LED_FUN(n) \
+ { \
+ .name = #n, \
+ .groups = n##_groups, \
+ .num_groups = ARRAY_SIZE(n##_groups), \
+ .reg = BCM63268_LEDCTRL, \
+ }
+
+#define BCM63268_MODE_FUN(n) \
+ { \
+ .name = #n, \
+ .groups = n##_groups, \
+ .num_groups = ARRAY_SIZE(n##_groups), \
+ .reg = BCM63268_MODE, \
+ }
+
+#define BCM63268_CTRL_FUN(n) \
+ { \
+ .name = #n, \
+ .groups = n##_groups, \
+ .num_groups = ARRAY_SIZE(n##_groups), \
+ .reg = BCM63268_CTRL, \
+ }
+
+#define BCM63268_BASEMODE_FUN(n, val) \
+ { \
+ .name = #n, \
+ .groups = n##_groups, \
+ .num_groups = ARRAY_SIZE(n##_groups), \
+ .reg = BCM63268_BASEMODE, \
+ .mask = val, \
+ }
+
+static const struct bcm63268_function bcm63268_funcs[] = {
+ BCM63268_LED_FUN(led),
+ BCM63268_MODE_FUN(serial_led_clk),
+ BCM63268_MODE_FUN(serial_led_data),
+ BCM63268_MODE_FUN(hsspi_cs6),
+ BCM63268_MODE_FUN(hsspi_cs7),
+ BCM63268_MODE_FUN(uart1_scts),
+ BCM63268_MODE_FUN(uart1_srts),
+ BCM63268_MODE_FUN(uart1_sdin),
+ BCM63268_MODE_FUN(uart1_sdout),
+ BCM63268_MODE_FUN(ntr_pulse_in),
+ BCM63268_MODE_FUN(dsl_ntr_pulse_out),
+ BCM63268_MODE_FUN(hsspi_cs4),
+ BCM63268_MODE_FUN(hsspi_cs5),
+ BCM63268_MODE_FUN(adsl_spi_miso),
+ BCM63268_MODE_FUN(adsl_spi_mosi),
+ BCM63268_MODE_FUN(vreg_clk),
+ BCM63268_MODE_FUN(pcie_clkreq_b),
+ BCM63268_MODE_FUN(switch_led_clk),
+ BCM63268_MODE_FUN(switch_led_data),
+ BCM63268_CTRL_FUN(wifi),
+ BCM63268_BASEMODE_FUN(nand, BASEMODE_NAND),
+ BCM63268_BASEMODE_FUN(dectpd, BASEMODE_DECTPD),
+ BCM63268_BASEMODE_FUN(vdsl_phy_override_0, BASEMODE_VDSL_PHY_0),
+ BCM63268_BASEMODE_FUN(vdsl_phy_override_1, BASEMODE_VDSL_PHY_1),
+ BCM63268_BASEMODE_FUN(vdsl_phy_override_2, BASEMODE_VDSL_PHY_2),
+ BCM63268_BASEMODE_FUN(vdsl_phy_override_3, BASEMODE_VDSL_PHY_3),
+};
+
+static int bcm63268_pinctrl_get_group_count(struct pinctrl_dev *pctldev)
+{
+ return ARRAY_SIZE(bcm63268_groups);
+}
+
+static const char *bcm63268_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned group)
+{
+ return bcm63268_groups[group].name;
+}
+
+static int bcm63268_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned group,
+ const unsigned **pins,
+ unsigned *num_pins)
+{
+ *pins = bcm63268_groups[group].pins;
+ *num_pins = bcm63268_groups[group].num_pins;
+
+ return 0;
+}
+
+static int bcm63268_pinctrl_get_func_count(struct pinctrl_dev *pctldev)
+{
+ return ARRAY_SIZE(bcm63268_funcs);
+}
+
+static const char *bcm63268_pinctrl_get_func_name(struct pinctrl_dev *pctldev,
+ unsigned selector)
+{
+ return bcm63268_funcs[selector].name;
+}
+
+static int bcm63268_pinctrl_get_groups(struct pinctrl_dev *pctldev,
+ unsigned selector,
+ const char * const **groups,
+ unsigned * const num_groups)
+{
+ *groups = bcm63268_funcs[selector].groups;
+ *num_groups = bcm63268_funcs[selector].num_groups;
+
+ return 0;
+}
+
+static void bcm63268_rmw_mux(struct bcm63268_pinctrl *pctl, void __iomem *reg,
+ u32 mask, u32 val)
+{
+ unsigned long flags;
+ u32 tmp;
+
+ spin_lock_irqsave(&pctl->lock, flags);
+ tmp = __raw_readl(reg);
+ tmp &= ~mask;
+ tmp |= val;
+ __raw_writel(tmp, reg);
+
+ spin_unlock_irqrestore(&pctl->lock, flags);
+}
+
+static void bcm63268_set_gpio(struct bcm63268_pinctrl *pctl, unsigned pin)
+{
+ const struct pinctrl_pin_desc *desc = &bcm63268_pins[pin];
+ u32 basemode = (unsigned long)desc->drv_data;
+ u32 mask = BIT(pin % 32);
+
+ if (basemode)
+ bcm63268_rmw_mux(pctl, pctl->basemode, basemode, 0);
+
+ if (pin < 32) {
+ /* base mode: 0 => gpio, 1 => mux function */
+ bcm63268_rmw_mux(pctl, pctl->mode, mask, 0);
+
+ /* pins 0-23 might be muxed to led */
+ if (pin < 24)
+ bcm63268_rmw_mux(pctl, pctl->led, mask, 0);
+ } else if (pin < 52) {
+ /* ctrl reg: 0 => wifi function, 1 => gpio */
+ bcm63268_rmw_mux(pctl, pctl->ctrl, mask, mask);
+ }
+}
+
+static int bcm63268_pinctrl_set_mux(struct pinctrl_dev *pctldev,
+ unsigned selector, unsigned group)
+{
+ struct bcm63268_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ const struct bcm63268_pingroup *grp = &bcm63268_groups[group];
+ const struct bcm63268_function *f = &bcm63268_funcs[selector];
+ unsigned i;
+ void __iomem *reg;
+ u32 val, mask;
+
+ for (i = 0; i < grp->num_pins; i++)
+ bcm63268_set_gpio(pctl, grp->pins[i]);
+
+ switch (f->reg) {
+ case BCM63268_LEDCTRL:
+ reg = pctl->led;
+ mask = BIT(grp->pins[0]);
+ val = BIT(grp->pins[0]);
+ break;
+ case BCM63268_MODE:
+ reg = pctl->mode;
+ mask = BIT(grp->pins[0]);
+ val = BIT(grp->pins[0]);
+ break;
+ case BCM63268_CTRL:
+ reg = pctl->ctrl;
+ mask = BIT(grp->pins[0]);
+ val = 0;
+ break;
+ case BCM63268_BASEMODE:
+ reg = pctl->basemode;
+ mask = f->mask;
+ val = f->mask;
+ break;
+ default:
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ bcm63268_rmw_mux(pctl, reg, mask, val);
+
+ return 0;
+}
+
+static int bcm63268_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned offset)
+{
+ struct bcm63268_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+
+ /* disable all functions using this pin */
+ bcm63268_set_gpio(pctl, offset);
+
+ return 0;
+}
+
+static struct pinctrl_ops bcm63268_pctl_ops = {
+ .get_groups_count = bcm63268_pinctrl_get_group_count,
+ .get_group_name = bcm63268_pinctrl_get_group_name,
+ .get_group_pins = bcm63268_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 bcm63268_pmx_ops = {
+ .get_functions_count = bcm63268_pinctrl_get_func_count,
+ .get_function_name = bcm63268_pinctrl_get_func_name,
+ .get_function_groups = bcm63268_pinctrl_get_groups,
+ .set_mux = bcm63268_pinctrl_set_mux,
+ .gpio_request_enable = bcm63268_gpio_request_enable,
+ .strict = true,
+};
+
+static int bcm63268_pinctrl_probe(struct platform_device *pdev)
+{
+ struct bcm63268_pinctrl *pctl;
+ struct resource *res;
+ void __iomem *led, *mode, *ctrl, *basemode;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "led");
+ led = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(led))
+ return PTR_ERR(led);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mode");
+ mode = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mode))
+ return PTR_ERR(mode);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");
+ ctrl = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(ctrl))
+ return PTR_ERR(ctrl);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "basemode");
+ basemode = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(basemode))
+ return PTR_ERR(basemode);
+
+ pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
+ if (!pctl)
+ return -ENOMEM;
+
+ spin_lock_init(&pctl->lock);
+
+ pctl->led = led;
+ pctl->mode = mode;
+ pctl->ctrl = ctrl;
+ pctl->basemode = basemode;
+
+ pctl->desc.name = dev_name(&pdev->dev);
+ pctl->desc.owner = THIS_MODULE;
+ pctl->desc.pctlops = &bcm63268_pctl_ops;
+ pctl->desc.pmxops = &bcm63268_pmx_ops;
+
+ pctl->desc.npins = ARRAY_SIZE(bcm63268_pins);
+ pctl->desc.pins = bcm63268_pins;
+
+ platform_set_drvdata(pdev, pctl);
+
+ pctl->pctldev = bcm63xx_pinctrl_register(pdev, &pctl->desc, pctl,
+ pctl->gpio, BCM63268_NGPIO);
+ if (IS_ERR(pctl->pctldev))
+ return PTR_ERR(pctl->pctldev);
+
+ return 0;
+}
+
+static const struct of_device_id bcm63268_pinctrl_match[] = {
+ { .compatible = "brcm,bcm63268-pinctrl", },
+ { },
+};
+
+static struct platform_driver bcm63268_pinctrl_driver = {
+ .probe = bcm63268_pinctrl_probe,
+ .driver = {
+ .name = "bcm63268-pinctrl",
+ .of_match_table = bcm63268_pinctrl_match,
+ },
+};
+
+builtin_platform_driver(bcm63268_pinctrl_driver);
Reference in a new issue Copy permalink