diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.4/140-pinctrl-add-a-pincontrol-driver-for-BCM6368.patch')
-rw-r--r-- | target/linux/brcm63xx/patches-4.4/140-pinctrl-add-a-pincontrol-driver-for-BCM6368.patch | 620 |
1 files changed, 0 insertions, 620 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/140-pinctrl-add-a-pincontrol-driver-for-BCM6368.patch b/target/linux/brcm63xx/patches-4.4/140-pinctrl-add-a-pincontrol-driver-for-BCM6368.patch deleted file mode 100644 index 6a9b9e0807..0000000000 --- a/target/linux/brcm63xx/patches-4.4/140-pinctrl-add-a-pincontrol-driver-for-BCM6368.patch +++ /dev/null @@ -1,620 +0,0 @@ -From 90be3cb4f1a45b8be4a4ec264cd66c2f8e893fcb Mon Sep 17 00:00:00 2001 -From: Jonas Gorski <jonas.gorski@gmail.com> -Date: Fri, 24 Jun 2016 22:18:25 +0200 -Subject: [PATCH 11/16] pinctrl: add a pincontrol driver for BCM6368 - -Add a pincontrol driver for BCM6368. BCM6368 allows muxing the first 32 -GPIOs onto alternative functions. Not all are documented. - -Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> ---- - drivers/pinctrl/bcm63xx/Kconfig | 15 + - drivers/pinctrl/bcm63xx/Makefile | 1 + - drivers/pinctrl/bcm63xx/pinctrl-bcm6368.c | 573 ++++++++++++++++++++++++++++++ - 3 files changed, 589 insertions(+) - create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm6368.c - ---- a/drivers/pinctrl/bcm63xx/Kconfig -+++ b/drivers/pinctrl/bcm63xx/Kconfig -@@ -30,3 +30,18 @@ config PINCTRL_BCM6362 - select PINCONF - select PINCTRL_BCM63XX - select GENERIC_PINCONF -+ -+config PINCTRL_BCM6368 -+ bool "BCM6368 pincontrol driver" if COMPILE_TEST -+ select PINMUX -+ select PINCONF -+ select PINCTRL_BCM63XX -+ select GENERIC_PINCONF -+ select MFD_SYSCON -+ -+config PINCTRL_BCM63268 -+ bool "BCM63268 pincontrol driver" if COMPILE_TEST -+ select PINMUX -+ select PINCONF -+ select PINCTRL_BCM63XX -+ select GENERIC_PINCONF ---- a/drivers/pinctrl/bcm63xx/Makefile -+++ b/drivers/pinctrl/bcm63xx/Makefile -@@ -3,3 +3,4 @@ obj-$(CONFIG_PINCTRL_BCM6328) += pinctrl - obj-$(CONFIG_PINCTRL_BCM6348) += pinctrl-bcm6348.o - obj-$(CONFIG_PINCTRL_BCM6358) += pinctrl-bcm6358.o - obj-$(CONFIG_PINCTRL_BCM6362) += pinctrl-bcm6362.o -+obj-$(CONFIG_PINCTRL_BCM6368) += pinctrl-bcm6368.o ---- /dev/null -+++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm6368.c -@@ -0,0 +1,573 @@ -+/* -+ * 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/bitops.h> -+#include <linux/kernel.h> -+#include <linux/gpio.h> -+#include <linux/mfd/syscon.h> -+#include <linux/of.h> -+#include <linux/of_address.h> -+#include <linux/of_gpio.h> -+#include <linux/pinctrl/pinconf.h> -+#include <linux/pinctrl/pinconf-generic.h> -+#include <linux/pinctrl/pinmux.h> -+#include <linux/pinctrl/machine.h> -+#include <linux/platform_device.h> -+#include <linux/regmap.h> -+#include <linux/slab.h> -+#include <linux/spinlock.h> -+ -+#include "../core.h" -+#include "../pinctrl-utils.h" -+ -+#include "pinctrl-bcm63xx.h" -+ -+#define BCM6368_NGPIO 38 -+ -+#define BCM6368_BASEMODE_MASK 0x7 -+#define BCM6368_BASEMODE_GPIO 0x0 -+#define BCM6368_BASEMODE_UART1 0x1 -+ -+struct bcm6368_pingroup { -+ const char *name; -+ const unsigned * const pins; -+ const unsigned num_pins; -+}; -+ -+struct bcm6368_function { -+ const char *name; -+ const char * const *groups; -+ const unsigned num_groups; -+ -+ unsigned dir_out:16; -+ unsigned basemode:3; -+}; -+ -+struct bcm6368_pinctrl { -+ struct pinctrl_dev *pctldev; -+ struct pinctrl_desc desc; -+ -+ void __iomem *mode; -+ struct regmap_field *overlay; -+ -+ /* register access lock */ -+ spinlock_t lock; -+ -+ struct gpio_chip gpio[2]; -+}; -+ -+#define BCM6368_BASEMODE_PIN(a, b) \ -+ { \ -+ .number = a, \ -+ .name = b, \ -+ .drv_data = (void *)true \ -+ } -+ -+static const struct pinctrl_pin_desc bcm6368_pins[] = { -+ PINCTRL_PIN(0, "gpio0"), -+ PINCTRL_PIN(1, "gpio1"), -+ PINCTRL_PIN(2, "gpio2"), -+ PINCTRL_PIN(3, "gpio3"), -+ PINCTRL_PIN(4, "gpio4"), -+ PINCTRL_PIN(5, "gpio5"), -+ PINCTRL_PIN(6, "gpio6"), -+ PINCTRL_PIN(7, "gpio7"), -+ PINCTRL_PIN(8, "gpio8"), -+ PINCTRL_PIN(9, "gpio9"), -+ PINCTRL_PIN(10, "gpio10"), -+ PINCTRL_PIN(11, "gpio11"), -+ PINCTRL_PIN(12, "gpio12"), -+ PINCTRL_PIN(13, "gpio13"), -+ 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"), -+ PINCTRL_PIN(24, "gpio24"), -+ PINCTRL_PIN(25, "gpio25"), -+ PINCTRL_PIN(26, "gpio26"), -+ PINCTRL_PIN(27, "gpio27"), -+ PINCTRL_PIN(28, "gpio28"), -+ PINCTRL_PIN(29, "gpio29"), -+ BCM6368_BASEMODE_PIN(30, "gpio30"), -+ BCM6368_BASEMODE_PIN(31, "gpio31"), -+ BCM6368_BASEMODE_PIN(32, "gpio32"), -+ BCM6368_BASEMODE_PIN(33, "gpio33"), -+ PINCTRL_PIN(34, "gpio34"), -+ PINCTRL_PIN(35, "gpio35"), -+ PINCTRL_PIN(36, "gpio36"), -+ PINCTRL_PIN(37, "gpio37"), -+}; -+ -+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 uart1_grp_pins[] = { 30, 31, 32, 33 }; -+ -+#define BCM6368_GROUP(n) \ -+ { \ -+ .name = #n, \ -+ .pins = n##_pins, \ -+ .num_pins = ARRAY_SIZE(n##_pins), \ -+ } -+ -+static struct bcm6368_pingroup bcm6368_groups[] = { -+ BCM6368_GROUP(gpio0), -+ BCM6368_GROUP(gpio1), -+ BCM6368_GROUP(gpio2), -+ BCM6368_GROUP(gpio3), -+ BCM6368_GROUP(gpio4), -+ BCM6368_GROUP(gpio5), -+ BCM6368_GROUP(gpio6), -+ BCM6368_GROUP(gpio7), -+ BCM6368_GROUP(gpio8), -+ BCM6368_GROUP(gpio9), -+ BCM6368_GROUP(gpio10), -+ BCM6368_GROUP(gpio11), -+ BCM6368_GROUP(gpio12), -+ BCM6368_GROUP(gpio13), -+ BCM6368_GROUP(gpio14), -+ BCM6368_GROUP(gpio15), -+ BCM6368_GROUP(gpio16), -+ BCM6368_GROUP(gpio17), -+ BCM6368_GROUP(gpio18), -+ BCM6368_GROUP(gpio19), -+ BCM6368_GROUP(gpio20), -+ BCM6368_GROUP(gpio21), -+ BCM6368_GROUP(gpio22), -+ BCM6368_GROUP(gpio23), -+ BCM6368_GROUP(gpio24), -+ BCM6368_GROUP(gpio25), -+ BCM6368_GROUP(gpio26), -+ BCM6368_GROUP(gpio27), -+ BCM6368_GROUP(gpio28), -+ BCM6368_GROUP(gpio29), -+ BCM6368_GROUP(gpio30), -+ BCM6368_GROUP(gpio31), -+ BCM6368_GROUP(uart1_grp), -+}; -+ -+static const char * const analog_afe_0_groups[] = { -+ "gpio0", -+}; -+ -+static const char * const analog_afe_1_groups[] = { -+ "gpio1", -+}; -+ -+static const char * const sys_irq_groups[] = { -+ "gpio2", -+}; -+ -+static const char * const serial_led_data_groups[] = { -+ "gpio3", -+}; -+ -+static const char * const serial_led_clk_groups[] = { -+ "gpio4", -+}; -+ -+static const char * const inet_led_groups[] = { -+ "gpio5", -+}; -+ -+static const char * const ephy0_led_groups[] = { -+ "gpio6", -+}; -+ -+static const char * const ephy1_led_groups[] = { -+ "gpio7", -+}; -+ -+static const char * const ephy2_led_groups[] = { -+ "gpio8", -+}; -+ -+static const char * const ephy3_led_groups[] = { -+ "gpio9", -+}; -+ -+static const char * const robosw_led_data_groups[] = { -+ "gpio10", -+}; -+ -+static const char * const robosw_led_clk_groups[] = { -+ "gpio11", -+}; -+ -+static const char * const robosw_led0_groups[] = { -+ "gpio12", -+}; -+ -+static const char * const robosw_led1_groups[] = { -+ "gpio13", -+}; -+ -+static const char * const usb_device_led_groups[] = { -+ "gpio14", -+}; -+ -+static const char * const pci_req1_groups[] = { -+ "gpio16", -+}; -+ -+static const char * const pci_gnt1_groups[] = { -+ "gpio17", -+}; -+ -+static const char * const pci_intb_groups[] = { -+ "gpio18", -+}; -+ -+static const char * const pci_req0_groups[] = { -+ "gpio19", -+}; -+ -+static const char * const pci_gnt0_groups[] = { -+ "gpio20", -+}; -+ -+static const char * const pcmcia_cd1_groups[] = { -+ "gpio22", -+}; -+ -+static const char * const pcmcia_cd2_groups[] = { -+ "gpio23", -+}; -+ -+static const char * const pcmcia_vs1_groups[] = { -+ "gpio24", -+}; -+ -+static const char * const pcmcia_vs2_groups[] = { -+ "gpio25", -+}; -+ -+static const char * const ebi_cs2_groups[] = { -+ "gpio26", -+}; -+ -+static const char * const ebi_cs3_groups[] = { -+ "gpio27", -+}; -+ -+static const char * const spi_cs2_groups[] = { -+ "gpio28", -+}; -+ -+static const char * const spi_cs3_groups[] = { -+ "gpio29", -+}; -+ -+static const char * const spi_cs4_groups[] = { -+ "gpio30", -+}; -+ -+static const char * const spi_cs5_groups[] = { -+ "gpio31", -+}; -+ -+static const char * const uart1_groups[] = { -+ "uart1_grp", -+}; -+ -+#define BCM6368_FUN(n, out) \ -+ { \ -+ .name = #n, \ -+ .groups = n##_groups, \ -+ .num_groups = ARRAY_SIZE(n##_groups), \ -+ .dir_out = out, \ -+ } -+ -+#define BCM6368_BASEMODE_FUN(n, val, out) \ -+ { \ -+ .name = #n, \ -+ .groups = n##_groups, \ -+ .num_groups = ARRAY_SIZE(n##_groups), \ -+ .basemode = BCM6368_BASEMODE_##val, \ -+ .dir_out = out, \ -+ } -+ -+static const struct bcm6368_function bcm6368_funcs[] = { -+ BCM6368_FUN(analog_afe_0, 1), -+ BCM6368_FUN(analog_afe_1, 1), -+ BCM6368_FUN(sys_irq, 1), -+ BCM6368_FUN(serial_led_data, 1), -+ BCM6368_FUN(serial_led_clk, 1), -+ BCM6368_FUN(inet_led, 1), -+ BCM6368_FUN(ephy0_led, 1), -+ BCM6368_FUN(ephy1_led, 1), -+ BCM6368_FUN(ephy2_led, 1), -+ BCM6368_FUN(ephy3_led, 1), -+ BCM6368_FUN(robosw_led_data, 1), -+ BCM6368_FUN(robosw_led_clk, 1), -+ BCM6368_FUN(robosw_led0, 1), -+ BCM6368_FUN(robosw_led1, 1), -+ BCM6368_FUN(usb_device_led, 1), -+ BCM6368_FUN(pci_req1, 0), -+ BCM6368_FUN(pci_gnt1, 0), -+ BCM6368_FUN(pci_intb, 0), -+ BCM6368_FUN(pci_req0, 0), -+ BCM6368_FUN(pci_gnt0, 0), -+ BCM6368_FUN(pcmcia_cd1, 0), -+ BCM6368_FUN(pcmcia_cd2, 0), -+ BCM6368_FUN(pcmcia_vs1, 0), -+ BCM6368_FUN(pcmcia_vs2, 0), -+ BCM6368_FUN(ebi_cs2, 1), -+ BCM6368_FUN(ebi_cs3, 1), -+ BCM6368_FUN(spi_cs2, 1), -+ BCM6368_FUN(spi_cs3, 1), -+ BCM6368_FUN(spi_cs4, 1), -+ BCM6368_FUN(spi_cs5, 1), -+ BCM6368_BASEMODE_FUN(uart1, UART1, 0x6), -+}; -+ -+static int bcm6368_pinctrl_get_group_count(struct pinctrl_dev *pctldev) -+{ -+ return ARRAY_SIZE(bcm6368_groups); -+} -+ -+static const char *bcm6368_pinctrl_get_group_name(struct pinctrl_dev *pctldev, -+ unsigned group) -+{ -+ return bcm6368_groups[group].name; -+} -+ -+static int bcm6368_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, -+ unsigned group, const unsigned **pins, -+ unsigned *num_pins) -+{ -+ *pins = bcm6368_groups[group].pins; -+ *num_pins = bcm6368_groups[group].num_pins; -+ -+ return 0; -+} -+ -+static int bcm6368_pinctrl_get_func_count(struct pinctrl_dev *pctldev) -+{ -+ return ARRAY_SIZE(bcm6368_funcs); -+} -+ -+static const char *bcm6368_pinctrl_get_func_name(struct pinctrl_dev *pctldev, -+ unsigned selector) -+{ -+ return bcm6368_funcs[selector].name; -+} -+ -+static int bcm6368_pinctrl_get_groups(struct pinctrl_dev *pctldev, -+ unsigned selector, -+ const char * const **groups, -+ unsigned * const num_groups) -+{ -+ *groups = bcm6368_funcs[selector].groups; -+ *num_groups = bcm6368_funcs[selector].num_groups; -+ -+ return 0; -+} -+ -+static void bcm6368_rmw_mux(struct bcm6368_pinctrl *pctl, void __iomem *reg, -+ u32 mask, u32 val) -+{ -+ u32 tmp; -+ -+ tmp = __raw_readl(reg); -+ tmp &= ~mask; -+ tmp |= (val & mask); -+ __raw_writel(tmp, reg); -+} -+ -+static int bcm6368_pinctrl_set_mux(struct pinctrl_dev *pctldev, -+ unsigned selector, unsigned group) -+{ -+ struct bcm6368_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); -+ const struct bcm6368_pingroup *grp = &bcm6368_groups[group]; -+ const struct bcm6368_function *fun = &bcm6368_funcs[selector]; -+ unsigned long flags; -+ int i, pin; -+ -+ spin_lock_irqsave(&pctl->lock, flags); -+ if (fun->basemode) { -+ u32 mask = 0; -+ -+ for (i = 0; i < grp->num_pins; i++) { -+ pin = grp->pins[i]; -+ if (pin < 32) -+ mask |= BIT(pin); -+ } -+ -+ bcm6368_rmw_mux(pctl, pctl->mode, mask, 0); -+ regmap_field_write(pctl->overlay, fun->basemode); -+ } else { -+ pin = grp->pins[0]; -+ -+ if (bcm6368_pins[pin].drv_data) -+ regmap_field_write(pctl->overlay, -+ BCM6368_BASEMODE_GPIO); -+ -+ bcm6368_rmw_mux(pctl, pctl->mode, BIT(pin), BIT(pin)); -+ } -+ spin_unlock_irqrestore(&pctl->lock, flags); -+ -+ for (pin = 0; pin < grp->num_pins; pin++) { -+ int hw_gpio = bcm6368_pins[pin].number; -+ struct gpio_chip *gc = &pctl->gpio[hw_gpio / 32]; -+ -+ if (fun->dir_out & BIT(pin)) -+ gc->direction_output(gc, hw_gpio % 32, 0); -+ else -+ gc->direction_input(gc, hw_gpio % 32); -+ } -+ -+ return 0; -+} -+ -+static int bcm6368_gpio_request_enable(struct pinctrl_dev *pctldev, -+ struct pinctrl_gpio_range *range, -+ unsigned offset) -+{ -+ struct bcm6368_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); -+ unsigned long flags; -+ -+ if (offset >= 32 && !bcm6368_pins[offset].drv_data) -+ return 0; -+ -+ spin_lock_irqsave(&pctl->lock, flags); -+ /* disable all functions using this pin */ -+ if (offset < 32) -+ bcm6368_rmw_mux(pctl, pctl->mode, BIT(offset), 0); -+ -+ if (bcm6368_pins[offset].drv_data) -+ regmap_field_write(pctl->overlay, BCM6368_BASEMODE_GPIO); -+ -+ spin_unlock_irqrestore(&pctl->lock, flags); -+ -+ return 0; -+} -+ -+static struct pinctrl_ops bcm6368_pctl_ops = { -+ .get_groups_count = bcm6368_pinctrl_get_group_count, -+ .get_group_name = bcm6368_pinctrl_get_group_name, -+ .get_group_pins = bcm6368_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 bcm6368_pmx_ops = { -+ .get_functions_count = bcm6368_pinctrl_get_func_count, -+ .get_function_name = bcm6368_pinctrl_get_func_name, -+ .get_function_groups = bcm6368_pinctrl_get_groups, -+ .set_mux = bcm6368_pinctrl_set_mux, -+ .gpio_request_enable = bcm6368_gpio_request_enable, -+ .strict = true, -+}; -+ -+static int bcm6368_pinctrl_probe(struct platform_device *pdev) -+{ -+ struct bcm6368_pinctrl *pctl; -+ struct resource *res; -+ void __iomem *mode; -+ struct regmap *basemode; -+ struct reg_field overlay = REG_FIELD(0, 0, 3); -+ -+ if (pdev->dev.of_node) -+ basemode = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, -+ "brcm,gpiobasemode"); -+ else -+ basemode = syscon_regmap_lookup_by_pdevname("syscon.b00000b8"); -+ -+ if (IS_ERR(basemode)) -+ return PTR_ERR(basemode); -+ -+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mode"); -+ mode = devm_ioremap_resource(&pdev->dev, res); -+ if (IS_ERR(mode)) -+ return PTR_ERR(mode); -+ -+ pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL); -+ if (!pctl) -+ return -ENOMEM; -+ -+ pctl->overlay = devm_regmap_field_alloc(&pdev->dev, basemode, overlay); -+ if (IS_ERR(pctl->overlay)) -+ return PTR_ERR(pctl->overlay); -+ -+ spin_lock_init(&pctl->lock); -+ -+ pctl->mode = mode; -+ -+ /* disable all muxes by default */ -+ __raw_writel(0, pctl->mode); -+ -+ pctl->desc.name = dev_name(&pdev->dev); -+ pctl->desc.owner = THIS_MODULE; -+ pctl->desc.pctlops = &bcm6368_pctl_ops; -+ pctl->desc.pmxops = &bcm6368_pmx_ops; -+ -+ pctl->desc.npins = ARRAY_SIZE(bcm6368_pins); -+ pctl->desc.pins = bcm6368_pins; -+ -+ platform_set_drvdata(pdev, pctl); -+ -+ pctl->pctldev = bcm63xx_pinctrl_register(pdev, &pctl->desc, pctl, -+ pctl->gpio, BCM6368_NGPIO); -+ if (IS_ERR(pctl->pctldev)) -+ return PTR_ERR(pctl->pctldev); -+ -+ return 0; -+} -+ -+static const struct of_device_id bcm6368_pinctrl_match[] = { -+ { .compatible = "brcm,bcm6368-pinctrl", }, -+ { }, -+}; -+ -+static struct platform_driver bcm6368_pinctrl_driver = { -+ .probe = bcm6368_pinctrl_probe, -+ .driver = { -+ .name = "bcm6368-pinctrl", -+ .of_match_table = bcm6368_pinctrl_match, -+ }, -+}; -+ -+builtin_platform_driver(bcm6368_pinctrl_driver); |