// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2016 Broadcom Corporation
*
* 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/platform_device.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include "../core.h"
#include "../pinctrl-utils.h"
#define NS2_NUM_IOMUX 19
#define NS2_NUM_PWM_MUX 4
#define NS2_PIN_MUX_BASE0 0 x00
#define NS2_PIN_MUX_BASE1 0 x01
#define NS2_PIN_CONF_BASE 0 x02
#define NS2_MUX_PAD_FUNC1_OFFSET 0 x04
#define NS2_PIN_SRC_MASK 0 x01
#define NS2_PIN_PULL_MASK 0 x03
#define NS2_PIN_DRIVE_STRENGTH_MASK 0 x07
#define NS2_PIN_PULL_UP 0 x01
#define NS2_PIN_PULL_DOWN 0 x02
#define NS2_PIN_INPUT_EN_MASK 0 x01
/*
* 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 , 0 x0, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(64 , "qspi_hold" , 2 , 0 x0, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(65 , "qspi_cs" , 2 , 0 x0, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(66 , "qspi_sck" , 2 , 0 x0, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(67 , "uart3_sin" , 2 , 0 x04, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(68 , "uart3_sout" , 2 , 0 x04, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(69 , "qspi_mosi" , 2 , 0 x04, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(70 , "qspi_miso" , 2 , 0 x04, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(71 , "spi0_fss" , 2 , 0 x08, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(72 , "spi0_rxd" , 2 , 0 x08, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(73 , "spi0_txd" , 2 , 0 x08, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(74 , "spi0_sck" , 2 , 0 x08, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(75 , "spi1_fss" , 2 , 0 x0c, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(76 , "spi1_rxd" , 2 , 0 x0c, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(77 , "spi1_txd" , 2 , 0 x0c, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(78 , "spi1_sck" , 2 , 0 x0c, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(79 , "sdio0_data7" , 2 , 0 x10, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(80 , "sdio0_emmc_rst" , 2 , 0 x10, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(81 , "sdio0_led_on" , 2 , 0 x10, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(82 , "sdio0_wp" , 2 , 0 x10, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(83 , "sdio0_data3" , 2 , 0 x14, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(84 , "sdio0_data4" , 2 , 0 x14, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(85 , "sdio0_data5" , 2 , 0 x14, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(86 , "sdio0_data6" , 2 , 0 x14, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(87 , "sdio0_cmd" , 2 , 0 x18, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(88 , "sdio0_data0" , 2 , 0 x18, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(89 , "sdio0_data1" , 2 , 0 x18, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(90 , "sdio0_data2" , 2 , 0 x18, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(91 , "sdio1_led_on" , 2 , 0 x1c, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(92 , "sdio1_wp" , 2 , 0 x1c, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(93 , "sdio0_cd_l" , 2 , 0 x1c, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(94 , "sdio0_clk" , 2 , 0 x1c, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(95 , "sdio1_data5" , 2 , 0 x20, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(96 , "sdio1_data6" , 2 , 0 x20, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(97 , "sdio1_data7" , 2 , 0 x20, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(98 , "sdio1_emmc_rst" , 2 , 0 x20, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(99 , "sdio1_data1" , 2 , 0 x24, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(100 , "sdio1_data2" , 2 , 0 x24, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(101 , "sdio1_data3" , 2 , 0 x24, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(102 , "sdio1_data4" , 2 , 0 x24, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(103 , "sdio1_cd_l" , 2 , 0 x28, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(104 , "sdio1_clk" , 2 , 0 x28, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(105 , "sdio1_cmd" , 2 , 0 x28, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(106 , "sdio1_data0" , 2 , 0 x28, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(107 , "ext_mdio_0" , 2 , 0 x2c, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(108 , "ext_mdc_0" , 2 , 0 x2c, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(109 , "usb3_p1_vbus_ppc" , 2 , 0 x34, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(110 , "usb3_p1_overcurrent" , 2 , 0 x34, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(111 , "usb3_p0_vbus_ppc" , 2 , 0 x34, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(112 , "usb3_p0_overcurrent" , 2 , 0 x34, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(113 , "usb2_presence_indication" , 2 , 0 x38, 31 , 30 , 27 , 24 ),
NS2_PIN_DESC(114 , "usb2_vbus_present" , 2 , 0 x38, 23 , 22 , 19 , 16 ),
NS2_PIN_DESC(115 , "usb2_vbus_ppc" , 2 , 0 x38, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(116 , "usb2_overcurrent" , 2 , 0 x38, 7 , 6 , 3 , 0 ),
NS2_PIN_DESC(117 , "sata_led1" , 2 , 0 x3c, 15 , 14 , 11 , 8 ),
NS2_PIN_DESC(118 , "sata_led0" , 2 , 0 x3c, 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 && !pull_down)
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,
.npins = ARRAY_SIZE(ns2_pins),
};
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;
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);
pinctrl->base0 = devm_platform_ioremap_resource(pdev, 0 );
if (IS_ERR(pinctrl->base0))
return PTR_ERR(pinctrl->base0);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1 );
if (!res)
return -EINVAL;
pinctrl->base1 = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (!pinctrl->base1) {
dev_err(&pdev->dev, "unable to map I/O space\n" );
return -ENOMEM;
}
pinctrl->pinconf_base = devm_platform_ioremap_resource(pdev, 2 );
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, ARRAY_SIZE(ns2_pins), sizeof (*pins),
GFP_KERNEL);
if (!pins)
return -ENOMEM;
for (i = 0 ; i < ARRAY_SIZE(ns2_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;
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);
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¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-06-08)
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*© Formatika GbR, Deutschland