| /* Copyright (C) 2016 Broadcom Corporation |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation version 2. |
| * |
| * This program is distributed "as is" WITHOUT ANY WARRANTY of any |
| * kind, whether express or implied; without even the implied warranty |
| * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * This file contains the Northstar2 IOMUX driver that supports group |
| * based PINMUX configuration. The PWM is functional only when the |
| * corresponding mfio pin group is selected as gpio. |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/pinctrl/pinconf.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> |
| |
| #include "../core.h" |
| #include "../pinctrl-utils.h" |
| |
| #define NS2_NUM_IOMUX 19 |
| #define NS2_NUM_PWM_MUX 4 |
| |
| #define NS2_PIN_MUX_BASE0 0x00 |
| #define NS2_PIN_MUX_BASE1 0x01 |
| #define NS2_PIN_CONF_BASE 0x02 |
| #define NS2_MUX_PAD_FUNC1_OFFSET 0x04 |
| |
| #define NS2_PIN_SRC_MASK 0x01 |
| #define NS2_PIN_PULL_MASK 0x03 |
| #define NS2_PIN_DRIVE_STRENGTH_MASK 0x07 |
| |
| #define NS2_PIN_PULL_UP 0x01 |
| #define NS2_PIN_PULL_DOWN 0x02 |
| |
| #define NS2_PIN_INPUT_EN_MASK 0x01 |
| |
| /* |
| * Northstar2 IOMUX register description |
| * |
| * @base: base address number |
| * @offset: register offset for mux configuration of a group |
| * @shift: bit shift for mux configuration of a group |
| * @mask: mask bits |
| * @alt: alternate function to set to |
| */ |
| struct ns2_mux { |
| unsigned int base; |
| unsigned int offset; |
| unsigned int shift; |
| unsigned int mask; |
| unsigned int alt; |
| }; |
| |
| /* |
| * Keep track of Northstar2 IOMUX configuration and prevent double |
| * configuration |
| * |
| * @ns2_mux: Northstar2 IOMUX register description |
| * @is_configured: flag to indicate whether a mux setting has already |
| * been configured |
| */ |
| struct ns2_mux_log { |
| struct ns2_mux mux; |
| bool is_configured; |
| }; |
| |
| /* |
| * Group based IOMUX configuration |
| * |
| * @name: name of the group |
| * @pins: array of pins used by this group |
| * @num_pins: total number of pins used by this group |
| * @mux: Northstar2 group based IOMUX configuration |
| */ |
| struct ns2_pin_group { |
| const char *name; |
| const unsigned int *pins; |
| const unsigned int num_pins; |
| const struct ns2_mux mux; |
| }; |
| |
| /* |
| * Northstar2 mux function and supported pin groups |
| * |
| * @name: name of the function |
| * @groups: array of groups that can be supported by this function |
| * @num_groups: total number of groups that can be supported by function |
| */ |
| struct ns2_pin_function { |
| const char *name; |
| const char * const *groups; |
| const unsigned int num_groups; |
| }; |
| |
| /* |
| * Northstar2 IOMUX pinctrl core |
| * |
| * @pctl: pointer to pinctrl_dev |
| * @dev: pointer to device |
| * @base0: first IOMUX register base |
| * @base1: second IOMUX register base |
| * @pinconf_base: configuration register base |
| * @groups: pointer to array of groups |
| * @num_groups: total number of groups |
| * @functions: pointer to array of functions |
| * @num_functions: total number of functions |
| * @mux_log: pointer to the array of mux logs |
| * @lock: lock to protect register access |
| */ |
| struct ns2_pinctrl { |
| struct pinctrl_dev *pctl; |
| struct device *dev; |
| void __iomem *base0; |
| void __iomem *base1; |
| void __iomem *pinconf_base; |
| |
| const struct ns2_pin_group *groups; |
| unsigned int num_groups; |
| |
| const struct ns2_pin_function *functions; |
| unsigned int num_functions; |
| |
| struct ns2_mux_log *mux_log; |
| |
| spinlock_t lock; |
| }; |
| |
| /* |
| * Pin configuration info |
| * |
| * @base: base address number |
| * @offset: register offset from base |
| * @src_shift: slew rate control bit shift in the register |
| * @input_en: input enable control bit shift |
| * @pull_shift: pull-up/pull-down control bit shift in the register |
| * @drive_shift: drive strength control bit shift in the register |
| */ |
| struct ns2_pinconf { |
| unsigned int base; |
| unsigned int offset; |
| unsigned int src_shift; |
| unsigned int input_en; |
| unsigned int pull_shift; |
| unsigned int drive_shift; |
| }; |
| |
| /* |
| * Description of a pin in Northstar2 |
| * |
| * @pin: pin number |
| * @name: pin name |
| * @pin_conf: pin configuration structure |
| */ |
| struct ns2_pin { |
| unsigned int pin; |
| char *name; |
| struct ns2_pinconf pin_conf; |
| }; |
| |
| #define NS2_PIN_DESC(p, n, b, o, s, i, pu, d) \ |
| { \ |
| .pin = p, \ |
| .name = n, \ |
| .pin_conf = { \ |
| .base = b, \ |
| .offset = o, \ |
| .src_shift = s, \ |
| .input_en = i, \ |
| .pull_shift = pu, \ |
| .drive_shift = d, \ |
| } \ |
| } |
| |
| /* |
| * List of pins in Northstar2 |
| */ |
| static struct ns2_pin ns2_pins[] = { |
| NS2_PIN_DESC(0, "mfio_0", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(1, "mfio_1", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(2, "mfio_2", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(3, "mfio_3", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(4, "mfio_4", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(5, "mfio_5", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(6, "mfio_6", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(7, "mfio_7", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(8, "mfio_8", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(9, "mfio_9", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(10, "mfio_10", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(11, "mfio_11", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(12, "mfio_12", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(13, "mfio_13", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(14, "mfio_14", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(15, "mfio_15", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(16, "mfio_16", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(17, "mfio_17", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(18, "mfio_18", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(19, "mfio_19", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(20, "mfio_20", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(21, "mfio_21", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(22, "mfio_22", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(23, "mfio_23", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(24, "mfio_24", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(25, "mfio_25", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(26, "mfio_26", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(27, "mfio_27", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(28, "mfio_28", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(29, "mfio_29", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(30, "mfio_30", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(31, "mfio_31", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(32, "mfio_32", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(33, "mfio_33", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(34, "mfio_34", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(35, "mfio_35", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(36, "mfio_36", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(37, "mfio_37", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(38, "mfio_38", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(39, "mfio_39", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(40, "mfio_40", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(41, "mfio_41", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(42, "mfio_42", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(43, "mfio_43", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(44, "mfio_44", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(45, "mfio_45", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(46, "mfio_46", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(47, "mfio_47", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(48, "mfio_48", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(49, "mfio_49", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(50, "mfio_50", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(51, "mfio_51", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(52, "mfio_52", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(53, "mfio_53", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(54, "mfio_54", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(55, "mfio_55", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(56, "mfio_56", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(57, "mfio_57", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(58, "mfio_58", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(59, "mfio_59", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(60, "mfio_60", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(61, "mfio_61", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(62, "mfio_62", -1, 0, 0, 0, 0, 0), |
| NS2_PIN_DESC(63, "qspi_wp", 2, 0x0, 31, 30, 27, 24), |
| NS2_PIN_DESC(64, "qspi_hold", 2, 0x0, 23, 22, 19, 16), |
| NS2_PIN_DESC(65, "qspi_cs", 2, 0x0, 15, 14, 11, 8), |
| NS2_PIN_DESC(66, "qspi_sck", 2, 0x0, 7, 6, 3, 0), |
| NS2_PIN_DESC(67, "uart3_sin", 2, 0x04, 31, 30, 27, 24), |
| NS2_PIN_DESC(68, "uart3_sout", 2, 0x04, 23, 22, 19, 16), |
| NS2_PIN_DESC(69, "qspi_mosi", 2, 0x04, 15, 14, 11, 8), |
| NS2_PIN_DESC(70, "qspi_miso", 2, 0x04, 7, 6, 3, 0), |
| NS2_PIN_DESC(71, "spi0_fss", 2, 0x08, 31, 30, 27, 24), |
| NS2_PIN_DESC(72, "spi0_rxd", 2, 0x08, 23, 22, 19, 16), |
| NS2_PIN_DESC(73, "spi0_txd", 2, 0x08, 15, 14, 11, 8), |
| NS2_PIN_DESC(74, "spi0_sck", 2, 0x08, 7, 6, 3, 0), |
| NS2_PIN_DESC(75, "spi1_fss", 2, 0x0c, 31, 30, 27, 24), |
| NS2_PIN_DESC(76, "spi1_rxd", 2, 0x0c, 23, 22, 19, 16), |
| NS2_PIN_DESC(77, "spi1_txd", 2, 0x0c, 15, 14, 11, 8), |
| NS2_PIN_DESC(78, "spi1_sck", 2, 0x0c, 7, 6, 3, 0), |
| NS2_PIN_DESC(79, "sdio0_data7", 2, 0x10, 31, 30, 27, 24), |
| NS2_PIN_DESC(80, "sdio0_emmc_rst", 2, 0x10, 23, 22, 19, 16), |
| NS2_PIN_DESC(81, "sdio0_led_on", 2, 0x10, 15, 14, 11, 8), |
| NS2_PIN_DESC(82, "sdio0_wp", 2, 0x10, 7, 6, 3, 0), |
| NS2_PIN_DESC(83, "sdio0_data3", 2, 0x14, 31, 30, 27, 24), |
| NS2_PIN_DESC(84, "sdio0_data4", 2, 0x14, 23, 22, 19, 16), |
| NS2_PIN_DESC(85, "sdio0_data5", 2, 0x14, 15, 14, 11, 8), |
| NS2_PIN_DESC(86, "sdio0_data6", 2, 0x14, 7, 6, 3, 0), |
| NS2_PIN_DESC(87, "sdio0_cmd", 2, 0x18, 31, 30, 27, 24), |
| NS2_PIN_DESC(88, "sdio0_data0", 2, 0x18, 23, 22, 19, 16), |
| NS2_PIN_DESC(89, "sdio0_data1", 2, 0x18, 15, 14, 11, 8), |
| NS2_PIN_DESC(90, "sdio0_data2", 2, 0x18, 7, 6, 3, 0), |
| NS2_PIN_DESC(91, "sdio1_led_on", 2, 0x1c, 31, 30, 27, 24), |
| NS2_PIN_DESC(92, "sdio1_wp", 2, 0x1c, 23, 22, 19, 16), |
| NS2_PIN_DESC(93, "sdio0_cd_l", 2, 0x1c, 15, 14, 11, 8), |
| NS2_PIN_DESC(94, "sdio0_clk", 2, 0x1c, 7, 6, 3, 0), |
| NS2_PIN_DESC(95, "sdio1_data5", 2, 0x20, 31, 30, 27, 24), |
| NS2_PIN_DESC(96, "sdio1_data6", 2, 0x20, 23, 22, 19, 16), |
| NS2_PIN_DESC(97, "sdio1_data7", 2, 0x20, 15, 14, 11, 8), |
| NS2_PIN_DESC(98, "sdio1_emmc_rst", 2, 0x20, 7, 6, 3, 0), |
| NS2_PIN_DESC(99, "sdio1_data1", 2, 0x24, 31, 30, 27, 24), |
| NS2_PIN_DESC(100, "sdio1_data2", 2, 0x24, 23, 22, 19, 16), |
| NS2_PIN_DESC(101, "sdio1_data3", 2, 0x24, 15, 14, 11, 8), |
| NS2_PIN_DESC(102, "sdio1_data4", 2, 0x24, 7, 6, 3, 0), |
| NS2_PIN_DESC(103, "sdio1_cd_l", 2, 0x28, 31, 30, 27, 24), |
| NS2_PIN_DESC(104, "sdio1_clk", 2, 0x28, 23, 22, 19, 16), |
| NS2_PIN_DESC(105, "sdio1_cmd", 2, 0x28, 15, 14, 11, 8), |
| NS2_PIN_DESC(106, "sdio1_data0", 2, 0x28, 7, 6, 3, 0), |
| NS2_PIN_DESC(107, "ext_mdio_0", 2, 0x2c, 15, 14, 11, 8), |
| NS2_PIN_DESC(108, "ext_mdc_0", 2, 0x2c, 7, 6, 3, 0), |
| NS2_PIN_DESC(109, "usb3_p1_vbus_ppc", 2, 0x34, 31, 30, 27, 24), |
| NS2_PIN_DESC(110, "usb3_p1_overcurrent", 2, 0x34, 23, 22, 19, 16), |
| NS2_PIN_DESC(111, "usb3_p0_vbus_ppc", 2, 0x34, 15, 14, 11, 8), |
| NS2_PIN_DESC(112, "usb3_p0_overcurrent", 2, 0x34, 7, 6, 3, 0), |
| NS2_PIN_DESC(113, "usb2_presence_indication", 2, 0x38, 31, 30, 27, 24), |
| NS2_PIN_DESC(114, "usb2_vbus_present", 2, 0x38, 23, 22, 19, 16), |
| NS2_PIN_DESC(115, "usb2_vbus_ppc", 2, 0x38, 15, 14, 11, 8), |
| NS2_PIN_DESC(116, "usb2_overcurrent", 2, 0x38, 7, 6, 3, 0), |
| NS2_PIN_DESC(117, "sata_led1", 2, 0x3c, 15, 14, 11, 8), |
| NS2_PIN_DESC(118, "sata_led0", 2, 0x3c, 7, 6, 3, 0), |
| }; |
| |
| /* |
| * List of groups of pins |
| */ |
| |
| static const unsigned int nand_pins[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, |
| 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}; |
| static const unsigned int nor_data_pins[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
| 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25}; |
| |
| static const unsigned int gpio_0_1_pins[] = {24, 25}; |
| static const unsigned int pwm_0_pins[] = {24}; |
| static const unsigned int pwm_1_pins[] = {25}; |
| |
| static const unsigned int uart1_ext_clk_pins[] = {26}; |
| static const unsigned int nor_adv_pins[] = {26}; |
| |
| static const unsigned int gpio_2_5_pins[] = {27, 28, 29, 30}; |
| static const unsigned int pcie_ab1_clk_wak_pins[] = {27, 28, 29, 30}; |
| static const unsigned int nor_addr_0_3_pins[] = {27, 28, 29, 30}; |
| static const unsigned int pwm_2_pins[] = {27}; |
| static const unsigned int pwm_3_pins[] = {28}; |
| |
| static const unsigned int gpio_6_7_pins[] = {31, 32}; |
| static const unsigned int pcie_a3_clk_wak_pins[] = {31, 32}; |
| static const unsigned int nor_addr_4_5_pins[] = {31, 32}; |
| |
| static const unsigned int gpio_8_9_pins[] = {33, 34}; |
| static const unsigned int pcie_b3_clk_wak_pins[] = {33, 34}; |
| static const unsigned int nor_addr_6_7_pins[] = {33, 34}; |
| |
| static const unsigned int gpio_10_11_pins[] = {35, 36}; |
| static const unsigned int pcie_b2_clk_wak_pins[] = {35, 36}; |
| static const unsigned int nor_addr_8_9_pins[] = {35, 36}; |
| |
| static const unsigned int gpio_12_13_pins[] = {37, 38}; |
| static const unsigned int pcie_a2_clk_wak_pins[] = {37, 38}; |
| static const unsigned int nor_addr_10_11_pins[] = {37, 38}; |
| |
| static const unsigned int gpio_14_17_pins[] = {39, 40, 41, 42}; |
| static const unsigned int uart0_modem_pins[] = {39, 40, 41, 42}; |
| static const unsigned int nor_addr_12_15_pins[] = {39, 40, 41, 42}; |
| |
| static const unsigned int gpio_18_19_pins[] = {43, 44}; |
| static const unsigned int uart0_rts_cts_pins[] = {43, 44}; |
| |
| static const unsigned int gpio_20_21_pins[] = {45, 46}; |
| static const unsigned int uart0_in_out_pins[] = {45, 46}; |
| |
| static const unsigned int gpio_22_23_pins[] = {47, 48}; |
| static const unsigned int uart1_dcd_dsr_pins[] = {47, 48}; |
| |
| static const unsigned int gpio_24_25_pins[] = {49, 50}; |
| static const unsigned int uart1_ri_dtr_pins[] = {49, 50}; |
| |
| static const unsigned int gpio_26_27_pins[] = {51, 52}; |
| static const unsigned int uart1_rts_cts_pins[] = {51, 52}; |
| |
| static const unsigned int gpio_28_29_pins[] = {53, 54}; |
| static const unsigned int uart1_in_out_pins[] = {53, 54}; |
| |
| static const unsigned int gpio_30_31_pins[] = {55, 56}; |
| static const unsigned int uart2_rts_cts_pins[] = {55, 56}; |
| |
| #define NS2_PIN_GROUP(group_name, ba, off, sh, ma, al) \ |
| { \ |
| .name = __stringify(group_name) "_grp", \ |
| .pins = group_name ## _pins, \ |
| .num_pins = ARRAY_SIZE(group_name ## _pins), \ |
| .mux = { \ |
| .base = ba, \ |
| .offset = off, \ |
| .shift = sh, \ |
| .mask = ma, \ |
| .alt = al, \ |
| } \ |
| } |
| |
| /* |
| * List of Northstar2 pin groups |
| */ |
| static const struct ns2_pin_group ns2_pin_groups[] = { |
| NS2_PIN_GROUP(nand, 0, 0, 31, 1, 0), |
| NS2_PIN_GROUP(nor_data, 0, 0, 31, 1, 1), |
| NS2_PIN_GROUP(gpio_0_1, 0, 0, 31, 1, 0), |
| |
| NS2_PIN_GROUP(uart1_ext_clk, 0, 4, 30, 3, 1), |
| NS2_PIN_GROUP(nor_adv, 0, 4, 30, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_2_5, 0, 4, 28, 3, 0), |
| NS2_PIN_GROUP(pcie_ab1_clk_wak, 0, 4, 28, 3, 1), |
| NS2_PIN_GROUP(nor_addr_0_3, 0, 4, 28, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_6_7, 0, 4, 26, 3, 0), |
| NS2_PIN_GROUP(pcie_a3_clk_wak, 0, 4, 26, 3, 1), |
| NS2_PIN_GROUP(nor_addr_4_5, 0, 4, 26, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_8_9, 0, 4, 24, 3, 0), |
| NS2_PIN_GROUP(pcie_b3_clk_wak, 0, 4, 24, 3, 1), |
| NS2_PIN_GROUP(nor_addr_6_7, 0, 4, 24, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_10_11, 0, 4, 22, 3, 0), |
| NS2_PIN_GROUP(pcie_b2_clk_wak, 0, 4, 22, 3, 1), |
| NS2_PIN_GROUP(nor_addr_8_9, 0, 4, 22, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_12_13, 0, 4, 20, 3, 0), |
| NS2_PIN_GROUP(pcie_a2_clk_wak, 0, 4, 20, 3, 1), |
| NS2_PIN_GROUP(nor_addr_10_11, 0, 4, 20, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_14_17, 0, 4, 18, 3, 0), |
| NS2_PIN_GROUP(uart0_modem, 0, 4, 18, 3, 1), |
| NS2_PIN_GROUP(nor_addr_12_15, 0, 4, 18, 3, 2), |
| |
| NS2_PIN_GROUP(gpio_18_19, 0, 4, 16, 3, 0), |
| NS2_PIN_GROUP(uart0_rts_cts, 0, 4, 16, 3, 1), |
| |
| NS2_PIN_GROUP(gpio_20_21, 0, 4, 14, 3, 0), |
| NS2_PIN_GROUP(uart0_in_out, 0, 4, 14, 3, 1), |
| |
| NS2_PIN_GROUP(gpio_22_23, 0, 4, 12, 3, 0), |
| NS2_PIN_GROUP(uart1_dcd_dsr, 0, 4, 12, 3, 1), |
| |
| NS2_PIN_GROUP(gpio_24_25, 0, 4, 10, 3, 0), |
| NS2_PIN_GROUP(uart1_ri_dtr, 0, 4, 10, 3, 1), |
| |
| NS2_PIN_GROUP(gpio_26_27, 0, 4, 8, 3, 0), |
| NS2_PIN_GROUP(uart1_rts_cts, 0, 4, 8, 3, 1), |
| |
| NS2_PIN_GROUP(gpio_28_29, 0, 4, 6, 3, 0), |
| NS2_PIN_GROUP(uart1_in_out, 0, 4, 6, 3, 1), |
| |
| NS2_PIN_GROUP(gpio_30_31, 0, 4, 4, 3, 0), |
| NS2_PIN_GROUP(uart2_rts_cts, 0, 4, 4, 3, 1), |
| |
| NS2_PIN_GROUP(pwm_0, 1, 0, 0, 1, 1), |
| NS2_PIN_GROUP(pwm_1, 1, 0, 1, 1, 1), |
| NS2_PIN_GROUP(pwm_2, 1, 0, 2, 1, 1), |
| NS2_PIN_GROUP(pwm_3, 1, 0, 3, 1, 1), |
| }; |
| |
| /* |
| * List of groups supported by functions |
| */ |
| |
| static const char * const nand_grps[] = {"nand_grp"}; |
| |
| static const char * const nor_grps[] = {"nor_data_grp", "nor_adv_grp", |
| "nor_addr_0_3_grp", "nor_addr_4_5_grp", "nor_addr_6_7_grp", |
| "nor_addr_8_9_grp", "nor_addr_10_11_grp", "nor_addr_12_15_grp"}; |
| |
| static const char * const gpio_grps[] = {"gpio_0_1_grp", "gpio_2_5_grp", |
| "gpio_6_7_grp", "gpio_8_9_grp", "gpio_10_11_grp", "gpio_12_13_grp", |
| "gpio_14_17_grp", "gpio_18_19_grp", "gpio_20_21_grp", "gpio_22_23_grp", |
| "gpio_24_25_grp", "gpio_26_27_grp", "gpio_28_29_grp", |
| "gpio_30_31_grp"}; |
| |
| static const char * const pcie_grps[] = {"pcie_ab1_clk_wak_grp", |
| "pcie_a3_clk_wak_grp", "pcie_b3_clk_wak_grp", "pcie_b2_clk_wak_grp", |
| "pcie_a2_clk_wak_grp"}; |
| |
| static const char * const uart0_grps[] = {"uart0_modem_grp", |
| "uart0_rts_cts_grp", "uart0_in_out_grp"}; |
| |
| static const char * const uart1_grps[] = {"uart1_ext_clk_grp", |
| "uart1_dcd_dsr_grp", "uart1_ri_dtr_grp", "uart1_rts_cts_grp", |
| "uart1_in_out_grp"}; |
| |
| static const char * const uart2_grps[] = {"uart2_rts_cts_grp"}; |
| |
| static const char * const pwm_grps[] = {"pwm_0_grp", "pwm_1_grp", |
| "pwm_2_grp", "pwm_3_grp"}; |
| |
| #define NS2_PIN_FUNCTION(func) \ |
| { \ |
| .name = #func, \ |
| .groups = func ## _grps, \ |
| .num_groups = ARRAY_SIZE(func ## _grps), \ |
| } |
| |
| /* |
| * List of supported functions |
| */ |
| static const struct ns2_pin_function ns2_pin_functions[] = { |
| NS2_PIN_FUNCTION(nand), |
| NS2_PIN_FUNCTION(nor), |
| NS2_PIN_FUNCTION(gpio), |
| NS2_PIN_FUNCTION(pcie), |
| NS2_PIN_FUNCTION(uart0), |
| NS2_PIN_FUNCTION(uart1), |
| NS2_PIN_FUNCTION(uart2), |
| NS2_PIN_FUNCTION(pwm), |
| }; |
| |
| static int ns2_get_groups_count(struct pinctrl_dev *pctrl_dev) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| |
| return pinctrl->num_groups; |
| } |
| |
| static const char *ns2_get_group_name(struct pinctrl_dev *pctrl_dev, |
| unsigned int selector) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| |
| return pinctrl->groups[selector].name; |
| } |
| |
| static int ns2_get_group_pins(struct pinctrl_dev *pctrl_dev, |
| unsigned int selector, const unsigned int **pins, |
| unsigned int *num_pins) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| |
| *pins = pinctrl->groups[selector].pins; |
| *num_pins = pinctrl->groups[selector].num_pins; |
| |
| return 0; |
| } |
| |
| static void ns2_pin_dbg_show(struct pinctrl_dev *pctrl_dev, |
| struct seq_file *s, unsigned int offset) |
| { |
| seq_printf(s, " %s", dev_name(pctrl_dev->dev)); |
| } |
| |
| static const struct pinctrl_ops ns2_pinctrl_ops = { |
| .get_groups_count = ns2_get_groups_count, |
| .get_group_name = ns2_get_group_name, |
| .get_group_pins = ns2_get_group_pins, |
| .pin_dbg_show = ns2_pin_dbg_show, |
| .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, |
| .dt_free_map = pinctrl_utils_free_map, |
| }; |
| |
| static int ns2_get_functions_count(struct pinctrl_dev *pctrl_dev) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| |
| return pinctrl->num_functions; |
| } |
| |
| static const char *ns2_get_function_name(struct pinctrl_dev *pctrl_dev, |
| unsigned int selector) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| |
| return pinctrl->functions[selector].name; |
| } |
| |
| static int ns2_get_function_groups(struct pinctrl_dev *pctrl_dev, |
| unsigned int selector, |
| const char * const **groups, |
| unsigned int * const num_groups) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| |
| *groups = pinctrl->functions[selector].groups; |
| *num_groups = pinctrl->functions[selector].num_groups; |
| |
| return 0; |
| } |
| |
| static int ns2_pinmux_set(struct ns2_pinctrl *pinctrl, |
| const struct ns2_pin_function *func, |
| const struct ns2_pin_group *grp, |
| struct ns2_mux_log *mux_log) |
| { |
| const struct ns2_mux *mux = &grp->mux; |
| int i; |
| u32 val, mask; |
| unsigned long flags; |
| void __iomem *base_address; |
| |
| for (i = 0; i < NS2_NUM_IOMUX; i++) { |
| if ((mux->shift != mux_log[i].mux.shift) || |
| (mux->base != mux_log[i].mux.base) || |
| (mux->offset != mux_log[i].mux.offset)) |
| continue; |
| |
| /* if this is a new configuration, just do it! */ |
| if (!mux_log[i].is_configured) |
| break; |
| |
| /* |
| * IOMUX has been configured previously and one is trying to |
| * configure it to a different function |
| */ |
| if (mux_log[i].mux.alt != mux->alt) { |
| dev_err(pinctrl->dev, |
| "double configuration error detected!\n"); |
| dev_err(pinctrl->dev, "func:%s grp:%s\n", |
| func->name, grp->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| if (i == NS2_NUM_IOMUX) |
| return -EINVAL; |
| |
| mask = mux->mask; |
| mux_log[i].mux.alt = mux->alt; |
| mux_log[i].is_configured = true; |
| |
| switch (mux->base) { |
| case NS2_PIN_MUX_BASE0: |
| base_address = pinctrl->base0; |
| break; |
| |
| case NS2_PIN_MUX_BASE1: |
| base_address = pinctrl->base1; |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(base_address + grp->mux.offset); |
| val &= ~(mask << grp->mux.shift); |
| val |= grp->mux.alt << grp->mux.shift; |
| writel(val, (base_address + grp->mux.offset)); |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| return 0; |
| } |
| |
| static int ns2_pinmux_enable(struct pinctrl_dev *pctrl_dev, |
| unsigned int func_select, unsigned int grp_select) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); |
| const struct ns2_pin_function *func; |
| const struct ns2_pin_group *grp; |
| |
| if (grp_select >= pinctrl->num_groups || |
| func_select >= pinctrl->num_functions) |
| return -EINVAL; |
| |
| func = &pinctrl->functions[func_select]; |
| grp = &pinctrl->groups[grp_select]; |
| |
| dev_dbg(pctrl_dev->dev, "func:%u name:%s grp:%u name:%s\n", |
| func_select, func->name, grp_select, grp->name); |
| |
| dev_dbg(pctrl_dev->dev, "offset:0x%08x shift:%u alt:%u\n", |
| grp->mux.offset, grp->mux.shift, grp->mux.alt); |
| |
| return ns2_pinmux_set(pinctrl, func, grp, pinctrl->mux_log); |
| } |
| |
| static int ns2_pin_set_enable(struct pinctrl_dev *pctrldev, unsigned int pin, |
| u16 enable) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| unsigned long flags; |
| u32 val; |
| void __iomem *base_address; |
| |
| base_address = pinctrl->pinconf_base; |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(base_address + pin_data->pin_conf.offset); |
| val &= ~(NS2_PIN_SRC_MASK << pin_data->pin_conf.input_en); |
| |
| if (!enable) |
| val |= NS2_PIN_INPUT_EN_MASK << pin_data->pin_conf.input_en; |
| |
| writel(val, (base_address + pin_data->pin_conf.offset)); |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| dev_dbg(pctrldev->dev, "pin:%u set enable:%d\n", pin, enable); |
| return 0; |
| } |
| |
| static int ns2_pin_get_enable(struct pinctrl_dev *pctrldev, unsigned int pin) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| unsigned long flags; |
| int enable; |
| |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| enable = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); |
| enable = (enable >> pin_data->pin_conf.input_en) & |
| NS2_PIN_INPUT_EN_MASK; |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| if (!enable) |
| enable = NS2_PIN_INPUT_EN_MASK; |
| else |
| enable = 0; |
| |
| dev_dbg(pctrldev->dev, "pin:%u get disable:%d\n", pin, enable); |
| return enable; |
| } |
| |
| static int ns2_pin_set_slew(struct pinctrl_dev *pctrldev, unsigned int pin, |
| u32 slew) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| unsigned long flags; |
| u32 val; |
| void __iomem *base_address; |
| |
| base_address = pinctrl->pinconf_base; |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(base_address + pin_data->pin_conf.offset); |
| val &= ~(NS2_PIN_SRC_MASK << pin_data->pin_conf.src_shift); |
| |
| if (slew) |
| val |= NS2_PIN_SRC_MASK << pin_data->pin_conf.src_shift; |
| |
| writel(val, (base_address + pin_data->pin_conf.offset)); |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| dev_dbg(pctrldev->dev, "pin:%u set slew:%d\n", pin, slew); |
| return 0; |
| } |
| |
| static int ns2_pin_get_slew(struct pinctrl_dev *pctrldev, unsigned int pin, |
| u16 *slew) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); |
| *slew = (val >> pin_data->pin_conf.src_shift) & NS2_PIN_SRC_MASK; |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| dev_dbg(pctrldev->dev, "pin:%u get slew:%d\n", pin, *slew); |
| return 0; |
| } |
| |
| static int ns2_pin_set_pull(struct pinctrl_dev *pctrldev, unsigned int pin, |
| bool pull_up, bool pull_down) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| unsigned long flags; |
| u32 val; |
| void __iomem *base_address; |
| |
| base_address = pinctrl->pinconf_base; |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(base_address + pin_data->pin_conf.offset); |
| val &= ~(NS2_PIN_PULL_MASK << pin_data->pin_conf.pull_shift); |
| |
| if (pull_up == true) |
| val |= NS2_PIN_PULL_UP << pin_data->pin_conf.pull_shift; |
| if (pull_down == true) |
| val |= NS2_PIN_PULL_DOWN << pin_data->pin_conf.pull_shift; |
| writel(val, (base_address + pin_data->pin_conf.offset)); |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| dev_dbg(pctrldev->dev, "pin:%u set pullup:%d pulldown: %d\n", |
| pin, pull_up, pull_down); |
| return 0; |
| } |
| |
| static void ns2_pin_get_pull(struct pinctrl_dev *pctrldev, |
| unsigned int pin, bool *pull_up, |
| bool *pull_down) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); |
| val = (val >> pin_data->pin_conf.pull_shift) & NS2_PIN_PULL_MASK; |
| *pull_up = false; |
| *pull_down = false; |
| |
| if (val == NS2_PIN_PULL_UP) |
| *pull_up = true; |
| |
| if (val == NS2_PIN_PULL_DOWN) |
| *pull_down = true; |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| } |
| |
| static int ns2_pin_set_strength(struct pinctrl_dev *pctrldev, unsigned int pin, |
| u32 strength) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| u32 val; |
| unsigned long flags; |
| void __iomem *base_address; |
| |
| /* make sure drive strength is supported */ |
| if (strength < 2 || strength > 16 || (strength % 2)) |
| return -ENOTSUPP; |
| |
| base_address = pinctrl->pinconf_base; |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(base_address + pin_data->pin_conf.offset); |
| val &= ~(NS2_PIN_DRIVE_STRENGTH_MASK << pin_data->pin_conf.drive_shift); |
| val |= ((strength / 2) - 1) << pin_data->pin_conf.drive_shift; |
| writel(val, (base_address + pin_data->pin_conf.offset)); |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| dev_dbg(pctrldev->dev, "pin:%u set drive strength:%d mA\n", |
| pin, strength); |
| return 0; |
| } |
| |
| static int ns2_pin_get_strength(struct pinctrl_dev *pctrldev, unsigned int pin, |
| u16 *strength) |
| { |
| struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| u32 val; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&pinctrl->lock, flags); |
| val = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); |
| *strength = (val >> pin_data->pin_conf.drive_shift) & |
| NS2_PIN_DRIVE_STRENGTH_MASK; |
| *strength = (*strength + 1) * 2; |
| spin_unlock_irqrestore(&pinctrl->lock, flags); |
| |
| dev_dbg(pctrldev->dev, "pin:%u get drive strength:%d mA\n", |
| pin, *strength); |
| return 0; |
| } |
| |
| static int ns2_pin_config_get(struct pinctrl_dev *pctldev, unsigned int pin, |
| unsigned long *config) |
| { |
| struct ns2_pin *pin_data = pctldev->desc->pins[pin].drv_data; |
| enum pin_config_param param = pinconf_to_config_param(*config); |
| bool pull_up, pull_down; |
| u16 arg = 0; |
| int ret; |
| |
| if (pin_data->pin_conf.base == -1) |
| return -ENOTSUPP; |
| |
| switch (param) { |
| case PIN_CONFIG_BIAS_DISABLE: |
| ns2_pin_get_pull(pctldev, pin, &pull_up, &pull_down); |
| if ((pull_up == false) && (pull_down == false)) |
| return 0; |
| else |
| return -EINVAL; |
| |
| case PIN_CONFIG_BIAS_PULL_UP: |
| ns2_pin_get_pull(pctldev, pin, &pull_up, &pull_down); |
| if (pull_up) |
| return 0; |
| else |
| return -EINVAL; |
| |
| case PIN_CONFIG_BIAS_PULL_DOWN: |
| ns2_pin_get_pull(pctldev, pin, &pull_up, &pull_down); |
| if (pull_down) |
| return 0; |
| else |
| return -EINVAL; |
| |
| case PIN_CONFIG_DRIVE_STRENGTH: |
| ret = ns2_pin_get_strength(pctldev, pin, &arg); |
| if (ret) |
| return ret; |
| *config = pinconf_to_config_packed(param, arg); |
| return 0; |
| |
| case PIN_CONFIG_SLEW_RATE: |
| ret = ns2_pin_get_slew(pctldev, pin, &arg); |
| if (ret) |
| return ret; |
| *config = pinconf_to_config_packed(param, arg); |
| return 0; |
| |
| case PIN_CONFIG_INPUT_ENABLE: |
| ret = ns2_pin_get_enable(pctldev, pin); |
| if (ret) |
| return 0; |
| else |
| return -EINVAL; |
| |
| default: |
| return -ENOTSUPP; |
| } |
| } |
| |
| static int ns2_pin_config_set(struct pinctrl_dev *pctrldev, unsigned int pin, |
| unsigned long *configs, unsigned int num_configs) |
| { |
| struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; |
| enum pin_config_param param; |
| unsigned int i; |
| u32 arg; |
| int ret = -ENOTSUPP; |
| |
| if (pin_data->pin_conf.base == -1) |
| return -ENOTSUPP; |
| |
| for (i = 0; i < num_configs; i++) { |
| param = pinconf_to_config_param(configs[i]); |
| arg = pinconf_to_config_argument(configs[i]); |
| |
| switch (param) { |
| case PIN_CONFIG_BIAS_DISABLE: |
| ret = ns2_pin_set_pull(pctrldev, pin, false, false); |
| if (ret < 0) |
| goto out; |
| break; |
| |
| case PIN_CONFIG_BIAS_PULL_UP: |
| ret = ns2_pin_set_pull(pctrldev, pin, true, false); |
| if (ret < 0) |
| goto out; |
| break; |
| |
| case PIN_CONFIG_BIAS_PULL_DOWN: |
| ret = ns2_pin_set_pull(pctrldev, pin, false, true); |
| if (ret < 0) |
| goto out; |
| break; |
| |
| case PIN_CONFIG_DRIVE_STRENGTH: |
| ret = ns2_pin_set_strength(pctrldev, pin, arg); |
| if (ret < 0) |
| goto out; |
| break; |
| |
| case PIN_CONFIG_SLEW_RATE: |
| ret = ns2_pin_set_slew(pctrldev, pin, arg); |
| if (ret < 0) |
| goto out; |
| break; |
| |
| case PIN_CONFIG_INPUT_ENABLE: |
| ret = ns2_pin_set_enable(pctrldev, pin, arg); |
| if (ret < 0) |
| goto out; |
| break; |
| |
| default: |
| dev_err(pctrldev->dev, "invalid configuration\n"); |
| return -ENOTSUPP; |
| } |
| } |
| out: |
| return ret; |
| } |
| static const struct pinmux_ops ns2_pinmux_ops = { |
| .get_functions_count = ns2_get_functions_count, |
| .get_function_name = ns2_get_function_name, |
| .get_function_groups = ns2_get_function_groups, |
| .set_mux = ns2_pinmux_enable, |
| }; |
| |
| static const struct pinconf_ops ns2_pinconf_ops = { |
| .is_generic = true, |
| .pin_config_get = ns2_pin_config_get, |
| .pin_config_set = ns2_pin_config_set, |
| }; |
| |
| static struct pinctrl_desc ns2_pinctrl_desc = { |
| .name = "ns2-pinmux", |
| .pctlops = &ns2_pinctrl_ops, |
| .pmxops = &ns2_pinmux_ops, |
| .confops = &ns2_pinconf_ops, |
| }; |
| |
| static int ns2_mux_log_init(struct ns2_pinctrl *pinctrl) |
| { |
| struct ns2_mux_log *log; |
| unsigned int i; |
| |
| pinctrl->mux_log = devm_kcalloc(pinctrl->dev, NS2_NUM_IOMUX, |
| sizeof(struct ns2_mux_log), |
| GFP_KERNEL); |
| if (!pinctrl->mux_log) |
| return -ENOMEM; |
| |
| for (i = 0; i < NS2_NUM_IOMUX; i++) |
| pinctrl->mux_log[i].is_configured = false; |
| /* Group 0 uses bit 31 in the IOMUX_PAD_FUNCTION_0 register */ |
| log = &pinctrl->mux_log[0]; |
| log->mux.base = NS2_PIN_MUX_BASE0; |
| log->mux.offset = 0; |
| log->mux.shift = 31; |
| log->mux.alt = 0; |
| |
| /* |
| * Groups 1 through 14 use two bits each in the |
| * IOMUX_PAD_FUNCTION_1 register starting with |
| * bit position 30. |
| */ |
| for (i = 1; i < (NS2_NUM_IOMUX - NS2_NUM_PWM_MUX); i++) { |
| log = &pinctrl->mux_log[i]; |
| log->mux.base = NS2_PIN_MUX_BASE0; |
| log->mux.offset = NS2_MUX_PAD_FUNC1_OFFSET; |
| log->mux.shift = 32 - (i * 2); |
| log->mux.alt = 0; |
| } |
| |
| /* |
| * Groups 15 through 18 use one bit each in the |
| * AUX_SEL register. |
| */ |
| for (i = 0; i < NS2_NUM_PWM_MUX; i++) { |
| log = &pinctrl->mux_log[(NS2_NUM_IOMUX - NS2_NUM_PWM_MUX) + i]; |
| log->mux.base = NS2_PIN_MUX_BASE1; |
| log->mux.offset = 0; |
| log->mux.shift = i; |
| log->mux.alt = 0; |
| } |
| return 0; |
| } |
| |
| static int ns2_pinmux_probe(struct platform_device *pdev) |
| { |
| struct ns2_pinctrl *pinctrl; |
| struct resource *res; |
| int i, ret; |
| struct pinctrl_pin_desc *pins; |
| unsigned int num_pins = ARRAY_SIZE(ns2_pins); |
| |
| pinctrl = devm_kzalloc(&pdev->dev, sizeof(*pinctrl), GFP_KERNEL); |
| if (!pinctrl) |
| return -ENOMEM; |
| |
| pinctrl->dev = &pdev->dev; |
| platform_set_drvdata(pdev, pinctrl); |
| spin_lock_init(&pinctrl->lock); |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| pinctrl->base0 = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(pinctrl->base0)) |
| return PTR_ERR(pinctrl->base0); |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| pinctrl->base1 = devm_ioremap_nocache(&pdev->dev, res->start, |
| resource_size(res)); |
| if (!pinctrl->base1) { |
| dev_err(&pdev->dev, "unable to map I/O space\n"); |
| return -ENOMEM; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 2); |
| pinctrl->pinconf_base = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(pinctrl->pinconf_base)) |
| return PTR_ERR(pinctrl->pinconf_base); |
| |
| ret = ns2_mux_log_init(pinctrl); |
| if (ret) { |
| dev_err(&pdev->dev, "unable to initialize IOMUX log\n"); |
| return ret; |
| } |
| |
| pins = devm_kcalloc(&pdev->dev, num_pins, sizeof(*pins), GFP_KERNEL); |
| if (!pins) |
| return -ENOMEM; |
| |
| for (i = 0; i < num_pins; i++) { |
| pins[i].number = ns2_pins[i].pin; |
| pins[i].name = ns2_pins[i].name; |
| pins[i].drv_data = &ns2_pins[i]; |
| } |
| |
| pinctrl->groups = ns2_pin_groups; |
| pinctrl->num_groups = ARRAY_SIZE(ns2_pin_groups); |
| pinctrl->functions = ns2_pin_functions; |
| pinctrl->num_functions = ARRAY_SIZE(ns2_pin_functions); |
| ns2_pinctrl_desc.pins = pins; |
| ns2_pinctrl_desc.npins = num_pins; |
| |
| pinctrl->pctl = pinctrl_register(&ns2_pinctrl_desc, &pdev->dev, |
| pinctrl); |
| if (IS_ERR(pinctrl->pctl)) { |
| dev_err(&pdev->dev, "unable to register IOMUX pinctrl\n"); |
| return PTR_ERR(pinctrl->pctl); |
| } |
| |
| return 0; |
| } |
| |
| static const struct of_device_id ns2_pinmux_of_match[] = { |
| {.compatible = "brcm,ns2-pinmux"}, |
| { } |
| }; |
| |
| static struct platform_driver ns2_pinmux_driver = { |
| .driver = { |
| .name = "ns2-pinmux", |
| .of_match_table = ns2_pinmux_of_match, |
| }, |
| .probe = ns2_pinmux_probe, |
| }; |
| |
| static int __init ns2_pinmux_init(void) |
| { |
| return platform_driver_register(&ns2_pinmux_driver); |
| } |
| arch_initcall(ns2_pinmux_init); |