diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.14/182-pinctrl-bcm-add-Northstar-driver.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.14/182-pinctrl-bcm-add-Northstar-driver.patch | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-4.14/182-pinctrl-bcm-add-Northstar-driver.patch b/target/linux/bcm53xx/patches-4.14/182-pinctrl-bcm-add-Northstar-driver.patch new file mode 100644 index 0000000000..35c83422a9 --- /dev/null +++ b/target/linux/bcm53xx/patches-4.14/182-pinctrl-bcm-add-Northstar-driver.patch @@ -0,0 +1,426 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Wed, 26 Sep 2018 21:31:03 +0200 +Subject: [PATCH] pinctrl: bcm: add Northstar driver +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This driver provides support for Northstar mux controller. It differs +from Northstar Plus one so a new binding and driver were needed. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Signed-off-by: Linus Walleij <linus.walleij@linaro.org> +--- + drivers/pinctrl/bcm/Kconfig | 13 ++ + drivers/pinctrl/bcm/Makefile | 1 + + drivers/pinctrl/bcm/pinctrl-ns.c | 372 +++++++++++++++++++++++++++++++++++++++ + 3 files changed, 386 insertions(+) + create mode 100644 drivers/pinctrl/bcm/pinctrl-ns.c + +--- a/drivers/pinctrl/bcm/Kconfig ++++ b/drivers/pinctrl/bcm/Kconfig +@@ -72,6 +72,19 @@ config PINCTRL_CYGNUS_MUX + configuration, with the exception that certain individual pins + can be overridden to GPIO function + ++config PINCTRL_NS ++ bool "Broadcom Northstar pins driver" ++ depends on OF && (ARCH_BCM_5301X || COMPILE_TEST) ++ select PINMUX ++ select GENERIC_PINCONF ++ default ARCH_BCM_5301X ++ help ++ Say yes here to enable the Broadcom NS SoC pins driver. ++ ++ The Broadcom Northstar pins driver supports muxing multi-purpose pins ++ that can be used for various functions (e.g. SPI, I2C, UART) as well ++ as GPIOs. ++ + config PINCTRL_NSP_GPIO + bool "Broadcom NSP GPIO (with PINCONF) driver" + depends on OF_GPIO && (ARCH_BCM_NSP || COMPILE_TEST) +--- a/drivers/pinctrl/bcm/Makefile ++++ b/drivers/pinctrl/bcm/Makefile +@@ -5,6 +5,7 @@ obj-$(CONFIG_PINCTRL_BCM281XX) += pinct + obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o + obj-$(CONFIG_PINCTRL_IPROC_GPIO) += pinctrl-iproc-gpio.o + obj-$(CONFIG_PINCTRL_CYGNUS_MUX) += pinctrl-cygnus-mux.o ++obj-$(CONFIG_PINCTRL_NS) += pinctrl-ns.o + obj-$(CONFIG_PINCTRL_NSP_GPIO) += pinctrl-nsp-gpio.o + obj-$(CONFIG_PINCTRL_NS2_MUX) += pinctrl-ns2-mux.o + obj-$(CONFIG_PINCTRL_NSP_MUX) += pinctrl-nsp-mux.o +--- /dev/null ++++ b/drivers/pinctrl/bcm/pinctrl-ns.c +@@ -0,0 +1,372 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * Copyright (C) 2018 Rafał Miłecki <rafal@milecki.pl> ++ */ ++ ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/of_device.h> ++#include <linux/pinctrl/pinconf-generic.h> ++#include <linux/pinctrl/pinctrl.h> ++#include <linux/pinctrl/pinmux.h> ++#include <linux/platform_device.h> ++#include <linux/slab.h> ++ ++#define FLAG_BCM4708 BIT(1) ++#define FLAG_BCM4709 BIT(2) ++#define FLAG_BCM53012 BIT(3) ++ ++struct ns_pinctrl { ++ struct device *dev; ++ unsigned int chipset_flag; ++ struct pinctrl_dev *pctldev; ++ void __iomem *base; ++ ++ struct pinctrl_desc pctldesc; ++ struct ns_pinctrl_group *groups; ++ unsigned int num_groups; ++ struct ns_pinctrl_function *functions; ++ unsigned int num_functions; ++}; ++ ++/* ++ * Pins ++ */ ++ ++static const struct pinctrl_pin_desc ns_pinctrl_pins[] = { ++ { 0, "spi_clk", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 1, "spi_ss", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 2, "spi_mosi", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 3, "spi_miso", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 4, "i2c_scl", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 5, "i2c_sda", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 6, "mdc", (void *)(FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 7, "mdio", (void *)(FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 8, "pwm0", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 9, "pwm1", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 10, "pwm2", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 11, "pwm3", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 12, "uart1_rx", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 13, "uart1_tx", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 14, "uart1_cts", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 15, "uart1_rts", (void *)(FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 16, "uart2_rx", (void *)(FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 17, "uart2_tx", (void *)(FLAG_BCM4709 | FLAG_BCM53012) }, ++/* TODO { ??, "xtal_out", (void *)(FLAG_BCM4709) }, */ ++ { 22, "sdio_pwr", (void *)(FLAG_BCM4709 | FLAG_BCM53012) }, ++ { 23, "sdio_en_1p8v", (void *)(FLAG_BCM4709 | FLAG_BCM53012) }, ++}; ++ ++/* ++ * Groups ++ */ ++ ++struct ns_pinctrl_group { ++ const char *name; ++ const unsigned int *pins; ++ const unsigned int num_pins; ++ unsigned int chipsets; ++}; ++ ++static const unsigned int spi_pins[] = { 0, 1, 2, 3 }; ++static const unsigned int i2c_pins[] = { 4, 5 }; ++static const unsigned int mdio_pins[] = { 6, 7 }; ++static const unsigned int pwm0_pins[] = { 8 }; ++static const unsigned int pwm1_pins[] = { 9 }; ++static const unsigned int pwm2_pins[] = { 10 }; ++static const unsigned int pwm3_pins[] = { 11 }; ++static const unsigned int uart1_pins[] = { 12, 13, 14, 15 }; ++static const unsigned int uart2_pins[] = { 16, 17 }; ++static const unsigned int sdio_pwr_pins[] = { 22 }; ++static const unsigned int sdio_1p8v_pins[] = { 23 }; ++ ++#define NS_GROUP(_name, _pins, _chipsets) \ ++{ \ ++ .name = _name, \ ++ .pins = _pins, \ ++ .num_pins = ARRAY_SIZE(_pins), \ ++ .chipsets = _chipsets, \ ++} ++ ++static const struct ns_pinctrl_group ns_pinctrl_groups[] = { ++ NS_GROUP("spi_grp", spi_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("i2c_grp", i2c_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("mdio_grp", mdio_pins, FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("pwm0_grp", pwm0_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("pwm1_grp", pwm1_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("pwm2_grp", pwm2_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("pwm3_grp", pwm3_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("uart1_grp", uart1_pins, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("uart2_grp", uart2_pins, FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("sdio_pwr_grp", sdio_pwr_pins, FLAG_BCM4709 | FLAG_BCM53012), ++ NS_GROUP("sdio_1p8v_grp", sdio_1p8v_pins, FLAG_BCM4709 | FLAG_BCM53012), ++}; ++ ++/* ++ * Functions ++ */ ++ ++struct ns_pinctrl_function { ++ const char *name; ++ const char * const *groups; ++ const unsigned int num_groups; ++ unsigned int chipsets; ++}; ++ ++static const char * const spi_groups[] = { "spi_grp" }; ++static const char * const i2c_groups[] = { "i2c_grp" }; ++static const char * const mdio_groups[] = { "mdio_grp" }; ++static const char * const pwm_groups[] = { "pwm0_grp", "pwm1_grp", "pwm2_grp", ++ "pwm3_grp" }; ++static const char * const uart1_groups[] = { "uart1_grp" }; ++static const char * const uart2_groups[] = { "uart2_grp" }; ++static const char * const sdio_groups[] = { "sdio_pwr_grp", "sdio_1p8v_grp" }; ++ ++#define NS_FUNCTION(_name, _groups, _chipsets) \ ++{ \ ++ .name = _name, \ ++ .groups = _groups, \ ++ .num_groups = ARRAY_SIZE(_groups), \ ++ .chipsets = _chipsets, \ ++} ++ ++static const struct ns_pinctrl_function ns_pinctrl_functions[] = { ++ NS_FUNCTION("spi", spi_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_FUNCTION("i2c", i2c_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_FUNCTION("mdio", mdio_groups, FLAG_BCM4709 | FLAG_BCM53012), ++ NS_FUNCTION("pwm", pwm_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_FUNCTION("uart1", uart1_groups, FLAG_BCM4708 | FLAG_BCM4709 | FLAG_BCM53012), ++ NS_FUNCTION("uart2", uart2_groups, FLAG_BCM4709 | FLAG_BCM53012), ++ NS_FUNCTION("sdio", sdio_groups, FLAG_BCM4709 | FLAG_BCM53012), ++}; ++ ++/* ++ * Groups code ++ */ ++ ++static int ns_pinctrl_get_groups_count(struct pinctrl_dev *pctrl_dev) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ ++ return ns_pinctrl->num_groups; ++} ++ ++static const char *ns_pinctrl_get_group_name(struct pinctrl_dev *pctrl_dev, ++ unsigned int selector) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ ++ return ns_pinctrl->groups[selector].name; ++} ++ ++static int ns_pinctrl_get_group_pins(struct pinctrl_dev *pctrl_dev, ++ unsigned int selector, ++ const unsigned int **pins, ++ unsigned int *num_pins) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ ++ *pins = ns_pinctrl->groups[selector].pins; ++ *num_pins = ns_pinctrl->groups[selector].num_pins; ++ ++ return 0; ++} ++ ++static const struct pinctrl_ops ns_pinctrl_ops = { ++ .get_groups_count = ns_pinctrl_get_groups_count, ++ .get_group_name = ns_pinctrl_get_group_name, ++ .get_group_pins = ns_pinctrl_get_group_pins, ++ .dt_node_to_map = pinconf_generic_dt_node_to_map_group, ++ .dt_free_map = pinconf_generic_dt_free_map, ++}; ++ ++/* ++ * Functions code ++ */ ++ ++static int ns_pinctrl_get_functions_count(struct pinctrl_dev *pctrl_dev) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ ++ return ns_pinctrl->num_functions; ++} ++ ++static const char *ns_pinctrl_get_function_name(struct pinctrl_dev *pctrl_dev, ++ unsigned int selector) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ ++ return ns_pinctrl->functions[selector].name; ++} ++ ++static int ns_pinctrl_get_function_groups(struct pinctrl_dev *pctrl_dev, ++ unsigned int selector, ++ const char * const **groups, ++ unsigned * const num_groups) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ ++ *groups = ns_pinctrl->functions[selector].groups; ++ *num_groups = ns_pinctrl->functions[selector].num_groups; ++ ++ return 0; ++} ++ ++static int ns_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev, ++ unsigned int func_select, ++ unsigned int grp_select) ++{ ++ struct ns_pinctrl *ns_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); ++ u32 unset = 0; ++ u32 tmp; ++ int i; ++ ++ for (i = 0; i < ns_pinctrl->groups[grp_select].num_pins; i++) { ++ int pin_number = ns_pinctrl->groups[grp_select].pins[i]; ++ ++ unset |= BIT(pin_number); ++ } ++ ++ tmp = readl(ns_pinctrl->base); ++ tmp &= ~unset; ++ writel(tmp, ns_pinctrl->base); ++ ++ return 0; ++} ++ ++static const struct pinmux_ops ns_pinctrl_pmxops = { ++ .get_functions_count = ns_pinctrl_get_functions_count, ++ .get_function_name = ns_pinctrl_get_function_name, ++ .get_function_groups = ns_pinctrl_get_function_groups, ++ .set_mux = ns_pinctrl_set_mux, ++}; ++ ++/* ++ * Controller code ++ */ ++ ++static struct pinctrl_desc ns_pinctrl_desc = { ++ .name = "pinctrl-ns", ++ .pctlops = &ns_pinctrl_ops, ++ .pmxops = &ns_pinctrl_pmxops, ++}; ++ ++static const struct of_device_id ns_pinctrl_of_match_table[] = { ++ { .compatible = "brcm,bcm4708-pinmux", .data = (void *)FLAG_BCM4708, }, ++ { .compatible = "brcm,bcm4709-pinmux", .data = (void *)FLAG_BCM4709, }, ++ { .compatible = "brcm,bcm53012-pinmux", .data = (void *)FLAG_BCM53012, }, ++ { } ++}; ++ ++static int ns_pinctrl_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ const struct of_device_id *of_id; ++ struct ns_pinctrl *ns_pinctrl; ++ struct pinctrl_desc *pctldesc; ++ struct pinctrl_pin_desc *pin; ++ struct ns_pinctrl_group *group; ++ struct ns_pinctrl_function *function; ++ struct resource *res; ++ int i; ++ ++ ns_pinctrl = devm_kzalloc(dev, sizeof(*ns_pinctrl), GFP_KERNEL); ++ if (!ns_pinctrl) ++ return -ENOMEM; ++ pctldesc = &ns_pinctrl->pctldesc; ++ platform_set_drvdata(pdev, ns_pinctrl); ++ ++ /* Set basic properties */ ++ ++ ns_pinctrl->dev = dev; ++ ++ of_id = of_match_device(ns_pinctrl_of_match_table, dev); ++ if (!of_id) ++ return -EINVAL; ++ ns_pinctrl->chipset_flag = (unsigned int)of_id->data; ++ ++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, ++ "cru_gpio_control"); ++ ns_pinctrl->base = devm_ioremap_resource(dev, res); ++ if (IS_ERR(ns_pinctrl->base)) { ++ dev_err(dev, "Failed to map pinctrl regs\n"); ++ return PTR_ERR(ns_pinctrl->base); ++ } ++ ++ memcpy(pctldesc, &ns_pinctrl_desc, sizeof(*pctldesc)); ++ ++ /* Set pinctrl properties */ ++ ++ pctldesc->pins = devm_kcalloc(dev, ARRAY_SIZE(ns_pinctrl_pins), ++ sizeof(struct pinctrl_pin_desc), ++ GFP_KERNEL); ++ if (!pctldesc->pins) ++ return -ENOMEM; ++ for (i = 0, pin = (struct pinctrl_pin_desc *)&pctldesc->pins[0]; ++ i < ARRAY_SIZE(ns_pinctrl_pins); i++) { ++ const struct pinctrl_pin_desc *src = &ns_pinctrl_pins[i]; ++ unsigned int chipsets = (unsigned int)src->drv_data; ++ ++ if (chipsets & ns_pinctrl->chipset_flag) { ++ memcpy(pin++, src, sizeof(*src)); ++ pctldesc->npins++; ++ } ++ } ++ ++ ns_pinctrl->groups = devm_kcalloc(dev, ARRAY_SIZE(ns_pinctrl_groups), ++ sizeof(struct ns_pinctrl_group), ++ GFP_KERNEL); ++ if (!ns_pinctrl->groups) ++ return -ENOMEM; ++ for (i = 0, group = &ns_pinctrl->groups[0]; ++ i < ARRAY_SIZE(ns_pinctrl_groups); i++) { ++ const struct ns_pinctrl_group *src = &ns_pinctrl_groups[i]; ++ ++ if (src->chipsets & ns_pinctrl->chipset_flag) { ++ memcpy(group++, src, sizeof(*src)); ++ ns_pinctrl->num_groups++; ++ } ++ } ++ ++ ns_pinctrl->functions = devm_kcalloc(dev, ++ ARRAY_SIZE(ns_pinctrl_functions), ++ sizeof(struct ns_pinctrl_function), ++ GFP_KERNEL); ++ if (!ns_pinctrl->functions) ++ return -ENOMEM; ++ for (i = 0, function = &ns_pinctrl->functions[0]; ++ i < ARRAY_SIZE(ns_pinctrl_functions); i++) { ++ const struct ns_pinctrl_function *src = &ns_pinctrl_functions[i]; ++ ++ if (src->chipsets & ns_pinctrl->chipset_flag) { ++ memcpy(function++, src, sizeof(*src)); ++ ns_pinctrl->num_functions++; ++ } ++ } ++ ++ /* Register */ ++ ++ ns_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, ns_pinctrl); ++ if (IS_ERR(ns_pinctrl->pctldev)) { ++ dev_err(dev, "Failed to register pinctrl\n"); ++ return PTR_ERR(ns_pinctrl->pctldev); ++ } ++ ++ return 0; ++} ++ ++static struct platform_driver ns_pinctrl_driver = { ++ .probe = ns_pinctrl_probe, ++ .driver = { ++ .name = "ns-pinmux", ++ .of_match_table = ns_pinctrl_of_match_table, ++ }, ++}; ++ ++module_platform_driver(ns_pinctrl_driver); ++ ++MODULE_AUTHOR("Rafał Miłecki"); ++MODULE_LICENSE("GPL v2"); ++MODULE_DEVICE_TABLE(of, ns_pinctrl_of_match_table); |