- 根目录:
- drivers
- pinctrl
- pinctrl-sirf.c
/*
* pinmux driver for CSR SiRFprimaII
*
* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
*
* Licensed under GPLv2 or later.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/machine.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/bitops.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#define DRIVER_NAME "pinmux-sirf"
#define SIRFSOC_NUM_PADS 622
#define SIRFSOC_RSC_PIN_MUX 0x4
#define SIRFSOC_GPIO_PAD_EN(g) ((g)*0x100 + 0x84)
#define SIRFSOC_GPIO_PAD_EN_CLR(g) ((g)*0x100 + 0x90)
#define SIRFSOC_GPIO_CTRL(g, i) ((g)*0x100 + (i)*4)
#define SIRFSOC_GPIO_DSP_EN0 (0x80)
#define SIRFSOC_GPIO_INT_STATUS(g) ((g)*0x100 + 0x8C)
#define SIRFSOC_GPIO_CTL_INTR_LOW_MASK 0x1
#define SIRFSOC_GPIO_CTL_INTR_HIGH_MASK 0x2
#define SIRFSOC_GPIO_CTL_INTR_TYPE_MASK 0x4
#define SIRFSOC_GPIO_CTL_INTR_EN_MASK 0x8
#define SIRFSOC_GPIO_CTL_INTR_STS_MASK 0x10
#define SIRFSOC_GPIO_CTL_OUT_EN_MASK 0x20
#define SIRFSOC_GPIO_CTL_DATAOUT_MASK 0x40
#define SIRFSOC_GPIO_CTL_DATAIN_MASK 0x80
#define SIRFSOC_GPIO_CTL_PULL_MASK 0x100
#define SIRFSOC_GPIO_CTL_PULL_HIGH 0x200
#define SIRFSOC_GPIO_CTL_DSP_INT 0x400
#define SIRFSOC_GPIO_NO_OF_BANKS 5
#define SIRFSOC_GPIO_BANK_SIZE 32
#define SIRFSOC_GPIO_NUM(bank, index) (((bank)*(32)) + (index))
struct sirfsoc_gpio_bank {
struct of_mm_gpio_chip chip;
struct irq_domain *domain;
int id;
int parent_irq;
spinlock_t lock;
bool is_marco; /* for marco, some registers are different with prima2 */
};
static struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS];
static DEFINE_SPINLOCK(sgpio_lock);
/*
* pad list for the pinmux subsystem
* refer to CS-131858-DC-6A.xls
*/
static const struct pinctrl_pin_desc sirfsoc_pads[] = {
PINCTRL_PIN(0, "gpio0-0"),
PINCTRL_PIN(1, "gpio0-1"),
PINCTRL_PIN(2, "gpio0-2"),
PINCTRL_PIN(3, "gpio0-3"),
PINCTRL_PIN(4, "pwm0"),
PINCTRL_PIN(5, "pwm1"),
PINCTRL_PIN(6, "pwm2"),
PINCTRL_PIN(7, "pwm3"),
PINCTRL_PIN(8, "warm_rst_b"),
PINCTRL_PIN(9, "odo_0"),
PINCTRL_PIN(10, "odo_1"),
PINCTRL_PIN(11, "dr_dir"),
PINCTRL_PIN(12, "viprom_fa"),
PINCTRL_PIN(13, "scl_1"),
PINCTRL_PIN(14, "ntrst"),
PINCTRL_PIN(15, "sda_1"),
PINCTRL_PIN(16, "x_ldd[16]"),
PINCTRL_PIN(17, "x_ldd[17]"),
PINCTRL_PIN(18, "x_ldd[18]"),
PINCTRL_PIN(19, "x_ldd[19]"),
PINCTRL_PIN(20, "x_ldd[20]"),
PINCTRL_PIN(21, "x_ldd[21]"),
PINCTRL_PIN(22, "x_ldd[22]"),
PINCTRL_PIN(23, "x_ldd[23], lcdrom_frdy"),
PINCTRL_PIN(24, "gps_sgn"),
PINCTRL_PIN(25, "gps_mag"),
PINCTRL_PIN(26, "gps_clk"),
PINCTRL_PIN(27, "sd_cd_b_1"),
PINCTRL_PIN(28, "sd_vcc_on_1"),
PINCTRL_PIN(29, "sd_wp_b_1"),
PINCTRL_PIN(30, "sd_clk_3"),
PINCTRL_PIN(31, "sd_cmd_3"),
PINCTRL_PIN(32, "x_sd_dat_3[0]"),
PINCTRL_PIN(33, "x_sd_dat_3[1]"),
PINCTRL_PIN(34, "x_sd_dat_3[2]"),
PINCTRL_PIN(35, "x_sd_dat_3[3]"),
PINCTRL_PIN(36, "x_sd_clk_4"),
PINCTRL_PIN(37, "x_sd_cmd_4"),
PINCTRL_PIN(38, "x_sd_dat_4[0]"),
PINCTRL_PIN(39, "x_sd_dat_4[1]"),
PINCTRL_PIN(40, "x_sd_dat_4[2]"),
PINCTRL_PIN(41, "x_sd_dat_4[3]"),
PINCTRL_PIN(42, "x_cko_1"),
PINCTRL_PIN(43, "x_ac97_bit_clk"),
PINCTRL_PIN(44, "x_ac97_dout"),
PINCTRL_PIN(45, "x_ac97_din"),
PINCTRL_PIN(46, "x_ac97_sync"),
PINCTRL_PIN(47, "x_txd_1"),
PINCTRL_PIN(48, "x_txd_2"),
PINCTRL_PIN(49, "x_rxd_1"),
PINCTRL_PIN(50, "x_rxd_2"),
PINCTRL_PIN(51, "x_usclk_0"),
PINCTRL_PIN(52, "x_utxd_0"),
PINCTRL_PIN(53, "x_urxd_0"),
PINCTRL_PIN(54, "x_utfs_0"),
PINCTRL_PIN(55, "x_urfs_0"),
PINCTRL_PIN(56, "x_usclk_1"),
PINCTRL_PIN(57, "x_utxd_1"),
PINCTRL_PIN(58, "x_urxd_1"),
PINCTRL_PIN(59, "x_utfs_1"),
PINCTRL_PIN(60, "x_urfs_1"),
PINCTRL_PIN(61, "x_usclk_2"),
PINCTRL_PIN(62, "x_utxd_2"),
PINCTRL_PIN(63, "x_urxd_2"),
PINCTRL_PIN(64, "x_utfs_2"),
PINCTRL_PIN(65, "x_urfs_2"),
PINCTRL_PIN(66, "x_df_we_b"),
PINCTRL_PIN(67, "x_df_re_b"),
PINCTRL_PIN(68, "x_txd_0"),
PINCTRL_PIN(69, "x_rxd_0"),
PINCTRL_PIN(78, "x_cko_0"),
PINCTRL_PIN(79, "x_vip_pxd[7]"),
PINCTRL_PIN(80, "x_vip_pxd[6]"),
PINCTRL_PIN(81, "x_vip_pxd[5]"),
PINCTRL_PIN(82, "x_vip_pxd[4]"),
PINCTRL_PIN(83, "x_vip_pxd[3]"),
PINCTRL_PIN(84, "x_vip_pxd[2]"),
PINCTRL_PIN(85, "x_vip_pxd[1]"),
PINCTRL_PIN(86, "x_vip_pxd[0]"),
PINCTRL_PIN(87, "x_vip_vsync"),
PINCTRL_PIN(88, "x_vip_hsync"),
PINCTRL_PIN(89, "x_vip_pxclk"),
PINCTRL_PIN(90, "x_sda_0"),
PINCTRL_PIN(91, "x_scl_0"),
PINCTRL_PIN(92, "x_df_ry_by"),
PINCTRL_PIN(93, "x_df_cs_b[1]"),
PINCTRL_PIN(94, "x_df_cs_b[0]"),
PINCTRL_PIN(95, "x_l_pclk"),
PINCTRL_PIN(96, "x_l_lck"),
PINCTRL_PIN(97, "x_l_fck"),
PINCTRL_PIN(98, "x_l_de"),
PINCTRL_PIN(99, "x_ldd[0]"),
PINCTRL_PIN(100, "x_ldd[1]"),
PINCTRL_PIN(101, "x_ldd[2]"),
PINCTRL_PIN(102, "x_ldd[3]"),
PINCTRL_PIN(103, "x_ldd[4]"),
PINCTRL_PIN(104, "x_ldd[5]"),
PINCTRL_PIN(105, "x_ldd[6]"),
PINCTRL_PIN(106, "x_ldd[7]"),
PINCTRL_PIN(107, "x_ldd[8]"),
PINCTRL_PIN(108, "x_ldd[9]"),
PINCTRL_PIN(109, "x_ldd[10]"),
PINCTRL_PIN(110, "x_ldd[11]"),
PINCTRL_PIN(111, "x_ldd[12]"),
PINCTRL_PIN(112, "x_ldd[13]"),
PINCTRL_PIN(113, "x_ldd[14]"),
PINCTRL_PIN(114, "x_ldd[15]"),
};
/**
* @dev: a pointer back to containing device
* @virtbase: the offset to the controller in virtual memory
*/
struct sirfsoc_pmx {
struct device *dev;
struct pinctrl_dev *pmx;
void __iomem *gpio_virtbase;
void __iomem *rsc_virtbase;
bool is_marco;
};
/* SIRFSOC_GPIO_PAD_EN set */
struct sirfsoc_muxmask {
unsigned long group;
unsigned long mask;
};
struct sirfsoc_padmux {
unsigned long muxmask_counts;
const struct sirfsoc_muxmask *muxmask;
/* RSC_PIN_MUX set */
unsigned long funcmask;
unsigned long funcval;
};
/**
* struct sirfsoc_pin_group - describes a SiRFprimaII pin group
* @name: the name of this specific pin group
* @pins: an array of discrete physical pins used in this group, taken
* from the driver-local pin enumeration space
* @num_pins: the number of pins in this group array, i.e. the number of
* elements in .pins so we can iterate over that array
*/
struct sirfsoc_pin_group {
const char *name;
const unsigned int *pins;
const unsigned num_pins;
};
static const struct sirfsoc_muxmask lcd_16bits_sirfsoc_muxmask[] = {
{
.group = 3,
.mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
BIT(17) | BIT(18),
}, {
.group = 2,
.mask = BIT(31),
},
};
static const struct sirfsoc_padmux lcd_16bits_padmux = {
.muxmask_counts = ARRAY_SIZE(lcd_16bits_sirfsoc_muxmask),
.muxmask = lcd_16bits_sirfsoc_muxmask,
.funcmask = BIT(4),
.funcval = 0,
};
static const unsigned lcd_16bits_pins[] = { 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
static const struct sirfsoc_muxmask lcd_18bits_muxmask[] = {
{
.group = 3,
.mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
BIT(17) | BIT(18),
}, {
.group = 2,
.mask = BIT(31),
}, {
.group = 0,
.mask = BIT(16) | BIT(17),
},
};
static const struct sirfsoc_padmux lcd_18bits_padmux = {
.muxmask_counts = ARRAY_SIZE(lcd_18bits_muxmask),
.muxmask = lcd_18bits_muxmask,
.funcmask = BIT(4),
.funcval = 0,
};
static const unsigned lcd_18bits_pins[] = { 16, 17, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114};
static const struct sirfsoc_muxmask lcd_24bits_muxmask[] = {
{
.group = 3,
.mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
BIT(17) | BIT(18),
}, {
.group = 2,
.mask = BIT(31),
}, {
.group = 0,
.mask = BIT(16) | BIT(17) | BIT(18) | BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23),
},
};
static const struct sirfsoc_padmux lcd_24bits_padmux = {
.muxmask_counts = ARRAY_SIZE(lcd_24bits_muxmask),
.muxmask = lcd_24bits_muxmask,
.funcmask = BIT(4),
.funcval = 0,
};
static const unsigned lcd_24bits_pins[] = { 16, 17, 18, 19, 20, 21, 22, 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
static const struct sirfsoc_muxmask lcdrom_muxmask[] = {
{
.group = 3,
.mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) |
BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) |
BIT(17) | BIT(18),
}, {
.group = 2,
.mask = BIT(31),
}, {
.group = 0,
.mask = BIT(23),
},
};
static const struct sirfsoc_padmux lcdrom_padmux = {
.muxmask_counts = ARRAY_SIZE(lcdrom_muxmask),
.muxmask = lcdrom_muxmask,
.funcmask = BIT(4),
.funcval = BIT(4),
};
static const unsigned lcdrom_pins[] = { 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114 };
static const struct sirfsoc_muxmask uart0_muxmask[] = {
{
.group = 2,
.mask = BIT(4) | BIT(5),
}, {
.group = 1,
.mask = BIT(23) | BIT(28),
},
};
static const struct sirfsoc_padmux uart0_padmux = {
.muxmask_counts = ARRAY_SIZE(uart0_muxmask),
.muxmask = uart0_muxmask,
.funcmask = BIT(9),
.funcval = BIT(9),
};
static const unsigned uart0_pins[] = { 55, 60, 68, 69 };
static const struct sirfsoc_muxmask uart0_nostreamctrl_muxmask[] = {
{
.group = 2,
.mask = BIT(4) | BIT(5),
},
};
static const struct sirfsoc_padmux uart0_nostreamctrl_padmux = {
.muxmask_counts = ARRAY_SIZE(uart0_nostreamctrl_muxmask),
.muxmask = uart0_nostreamctrl_muxmask,
};
static const unsigned uart0_nostreamctrl_pins[] = { 68, 39 };
static const struct sirfsoc_muxmask uart1_muxmask[] = {
{
.group = 1,
.mask = BIT(15) | BIT(17),
},
};
static const struct sirfsoc_padmux uart1_padmux = {
.muxmask_counts = ARRAY_SIZE(uart1_muxmask),
.muxmask = uart1_muxmask,
};
static const unsigned uart1_pins[] = { 47, 49 };
static const struct sirfsoc_muxmask uart2_muxmask[] = {
{
.group = 1,
.mask = BIT(16) | BIT(18) | BIT(24) | BIT(27),
},
};
static const struct sirfsoc_padmux uart2_padmux = {
.muxmask_counts = ARRAY_SIZE(uart2_muxmask),
.muxmask = uart2_muxmask,
.funcmask = BIT(10),
.funcval = BIT(10),
};
static const unsigned uart2_pins[] = { 48, 50, 56, 59 };
static const struct sirfsoc_muxmask uart2_nostreamctrl_muxmask[] = {
{
.group = 1,
.mask = BIT(16) | BIT(18),
},
};
static const struct sirfsoc_padmux uart2_nostreamctrl_padmux = {
.muxmask_counts = ARRAY_SIZE(uart2_nostreamctrl_muxmask),
.muxmask = uart2_nostreamctrl_muxmask,
};
static const unsigned uart2_nostreamctrl_pins[] = { 48, 50 };
static const struct sirfsoc_muxmask sdmmc3_muxmask[] = {
{
.group = 0,
.mask = BIT(30) | BIT(31),
}, {
.group = 1,
.mask = BIT(0) | BIT(1) | BIT(2) | BIT(3),
},
};
static const struct sirfsoc_padmux sdmmc3_padmux = {
.muxmask_counts = ARRAY_SIZE(sdmmc3_muxmask),
.muxmask = sdmmc3_muxmask,
.funcmask = BIT(7),
.funcval = 0,
};
static const unsigned sdmmc3_pins[] = { 30, 31, 32, 33, 34, 35 };
static const struct sirfsoc_muxmask spi0_muxmask[] = {
{
.group = 1,
.mask = BIT(0) | BIT(1) | BIT(2) | BIT(3),
},
};
static const struct sirfsoc_padmux spi0_padmux = {
.muxmask_counts = ARRAY_SIZE(spi0_muxmask),
.muxmask = spi0_muxmask,
.funcmask = BIT(7),
.funcval = BIT(7),
};
static const unsigned spi0_pins[] = { 32, 33, 34, 35 };
static const struct sirfsoc_muxmask sdmmc4_muxmask[] = {
{
.group = 1,
.mask = BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9),
},
};
static const struct sirfsoc_padmux sdmmc4_padmux = {
.muxmask_counts = ARRAY_SIZE(sdmmc4_muxmask),
.muxmask = sdmmc4_muxmask,
};
static const unsigned sdmmc4_pins[] = { 36, 37, 38, 39, 40, 41 };
static const struct sirfsoc_muxmask cko1_muxmask[] = {
{
.group = 1,
.mask = BIT(10),
},
};
static const struct sirfsoc_padmux cko1_padmux = {
.muxmask_counts = ARRAY_SIZE(cko1_muxmask),
.muxmask = cko1_muxmask,
.funcmask = BIT(3),
.funcval = 0,
};
static const unsigned cko1_pins[] = { 42 };
static const struct sirfsoc_muxmask i2s_muxmask[] = {
{
.group = 1,
.mask =
BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(19)
| BIT(23) | BIT(28),
},
};
static const struct sirfsoc_padmux i2s_padmux = {
.muxmask_counts = ARRAY_SIZE(i2s_muxmask),
.muxmask = i2s_muxmask,
.funcmask = BIT(3) | BIT(9),
.funcval = BIT(3),
};
static const unsigned i2s_pins[] = { 42, 43, 44, 45, 46, 51, 55, 60 };
static const struct sirfsoc_muxmask ac97_muxmask[] = {
{
.group = 1,
.mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
},
};
static const struct sirfsoc_padmux ac97_padmux = {
.muxmask_counts = ARRAY_SIZE(ac97_muxmask),
.muxmask = ac97_muxmask,
.funcmask = BIT(8),
.funcval = 0,
};
static const unsigned ac97_pins[] = { 33, 34, 35, 36 };
static const struct sirfsoc_muxmask spi1_muxmask[] = {
{
.group = 1,
.mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
},
};
static const struct sirfsoc_padmux spi1_padmux = {
.muxmask_counts = ARRAY_SIZE(spi1_muxmask),
.muxmask = spi1_muxmask,
.funcmask = BIT(8),
.funcval = BIT(8),
};
static const unsigned spi1_pins[] = { 43, 44, 45, 46 };
static const struct sirfsoc_muxmask sdmmc1_muxmask[] = {
{
.group = 0,
.mask = BIT(27) | BIT(28) | BIT(29),
},
};
static const struct sirfsoc_padmux sdmmc1_padmux = {
.muxmask_counts = ARRAY_SIZE(sdmmc1_muxmask),
.muxmask = sdmmc1_muxmask,
};
static const unsigned sdmmc1_pins[] = { 27, 28, 29 };
static const struct sirfsoc_muxmask gps_muxmask[] = {
{
.group = 0,
.mask = BIT(24) | BIT(25) | BIT(26),
},
};
static const struct sirfsoc_padmux gps_padmux = {
.muxmask_counts = ARRAY_SIZE(gps_muxmask),
.muxmask = gps_muxmask,
.funcmask = BIT(12) | BIT(13) | BIT(14),
.funcval = BIT(12),
};
static const unsigned gps_pins[] = { 24, 25, 26 };
static const struct sirfsoc_muxmask sdmmc5_muxmask[] = {
{
.group = 0,
.mask = BIT(24) | BIT(25) | BIT(26),
}, {
.group = 1,
.mask = BIT(29),
}, {
.group = 2,
.mask = BIT(0) | BIT(1),
},
};
static const struct sirfsoc_padmux sdmmc5_padmux = {
.muxmask_counts = ARRAY_SIZE(sdmmc5_muxmask),
.muxmask = sdmmc5_muxmask,
.funcmask = BIT(13) | BIT(14),
.funcval = BIT(13) | BIT(14),
};
static const unsigned sdmmc5_pins[] = { 24, 25, 26, 61, 64, 65 };
static const struct sirfsoc_muxmask usp0_muxmask[] = {
{
.group = 1,
.mask = BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23),
},
};
static const struct sirfsoc_padmux usp0_padmux = {
.muxmask_counts = ARRAY_SIZE(usp0_muxmask),
.muxmask = usp0_muxmask,
.funcmask = BIT(1) | BIT(2) | BIT(6) | BIT(9),
.funcval = 0,
};
static const unsigned usp0_pins[] = { 51, 52, 53, 54, 55 };
static const struct sirfsoc_muxmask usp1_muxmask[] = {
{
.group = 1,
.mask = BIT(24) | BIT(25) | BIT(26) | BIT(27) | BIT(28),
},
};
static const struct sirfsoc_padmux usp1_padmux = {
.muxmask_counts = ARRAY_SIZE(usp1_muxmask),
.muxmask = usp1_muxmask,
.funcmask = BIT(1) | BIT(9) | BIT(10) | BIT(11),
.funcval = 0,
};
static const unsigned usp1_pins[] = { 56, 57, 58, 59, 60 };
static const struct sirfsoc_muxmask usp2_muxmask[] = {
{
.group = 1,
.mask = BIT(29) | BIT(30) | BIT(31),
}, {
.group = 2,
.mask = BIT(0) | BIT(1),
},
};
static const struct sirfsoc_padmux usp2_padmux = {
.muxmask_counts = ARRAY_SIZE(usp2_muxmask),
.muxmask = usp2_muxmask,
.funcmask = BIT(13) | BIT(14),
.funcval = 0,
};
static const unsigned usp2_pins[] = { 61, 62, 63, 64, 65 };
static const struct sirfsoc_muxmask nand_muxmask[] = {
{
.group = 2,
.mask = BIT(2) | BIT(3) | BIT(28) | BIT(29) | BIT(30),
},
};
static const struct sirfsoc_padmux nand_padmux = {
.muxmask_counts = ARRAY_SIZE(nand_muxmask),
.muxmask = nand_muxmask,
.funcmask = BIT(5),
.funcval = 0,
};
static const unsigned nand_pins[] = { 64, 65, 92, 93, 94 };
static const struct sirfsoc_padmux sdmmc0_padmux = {
.muxmask_counts = 0,
.funcmask = BIT(5),
.funcval = 0,
};
static const unsigned sdmmc0_pins[] = { };
static const struct sirfsoc_muxmask sdmmc2_muxmask[] = {
{
.group = 2,
.mask = BIT(2) | BIT(3),
},
};
static const struct sirfsoc_padmux sdmmc2_padmux = {
.muxmask_counts = ARRAY_SIZE(sdmmc2_muxmask),
.muxmask = sdmmc2_muxmask,
.funcmask = BIT(5),
.funcval = BIT(5),
};
static const unsigned sdmmc2_pins[] = { 66, 67 };
static const struct sirfsoc_muxmask cko0_muxmask[] = {
{
.group = 2,
.mask = BIT(14),
},
};
static const struct sirfsoc_padmux cko0_padmux = {
.muxmask_counts = ARRAY_SIZE(cko0_muxmask),
.muxmask = cko0_muxmask,
};
static const unsigned cko0_pins[] = { 78 };
static const struct sirfsoc_muxmask vip_muxmask[] = {
{
.group = 2,
.mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19)
| BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) |
BIT(25),
},
};
static const struct sirfsoc_padmux vip_padmux = {
.muxmask_counts = ARRAY_SIZE(vip_muxmask),
.muxmask = vip_muxmask,
.funcmask = BIT(0),
.funcval = 0,
};
static const unsigned vip_pins[] = { 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 };
static const struct sirfsoc_muxmask i2c0_muxmask[] = {
{
.group = 2,
.mask = BIT(26) | BIT(27),
},
};
static const struct sirfsoc_padmux i2c0_padmux = {
.muxmask_counts = ARRAY_SIZE(i2c0_muxmask),
.muxmask = i2c0_muxmask,
};
static const unsigned i2c0_pins[] = { 90, 91 };
static const struct sirfsoc_muxmask i2c1_muxmask[] = {
{
.group = 0,
.mask = BIT(13) | BIT(15),
},
};
static const struct sirfsoc_padmux i2c1_padmux = {
.muxmask_counts = ARRAY_SIZE(i2c1_muxmask),
.muxmask = i2c1_muxmask,
};
static const unsigned i2c1_pins[] = { 13, 15 };
static const struct sirfsoc_muxmask viprom_muxmask[] = {
{
.group = 2,
.mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19)
| BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) |
BIT(25),
}, {
.group = 0,
.mask = BIT(12),
},
};
static const struct sirfsoc_padmux viprom_padmux = {
.muxmask_counts = ARRAY_SIZE(viprom_muxmask),
.muxmask = viprom_muxmask,
.funcmask = BIT(0),
.funcval = BIT(0),
};
static const unsigned viprom_pins[] = { 12, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 };
static const struct sirfsoc_muxmask pwm0_muxmask[] = {
{
.group = 0,
.mask = BIT(4),
},
};
static const struct sirfsoc_padmux pwm0_padmux = {
.muxmask_counts = ARRAY_SIZE(pwm0_muxmask),
.muxmask = pwm0_muxmask,
.funcmask = BIT(12),
.funcval = 0,
};
static const unsigned pwm0_pins[] = { 4 };
static const struct sirfsoc_muxmask pwm1_muxmask[] = {
{
.group = 0,
.mask = BIT(5),
},
};
static const struct sirfsoc_padmux pwm1_padmux = {
.muxmask_counts = ARRAY_SIZE(pwm1_muxmask),
.muxmask = pwm1_muxmask,
};
static const unsigned pwm1_pins[] = { 5 };
static const struct sirfsoc_muxmask pwm2_muxmask[] = {
{
.group = 0,
.mask = BIT(6),
},
};
static const struct sirfsoc_padmux pwm2_padmux = {
.muxmask_counts = ARRAY_SIZE(pwm2_muxmask),
.muxmask = pwm2_muxmask,
};
static const unsigned pwm2_pins[] = { 6 };
static const struct sirfsoc_muxmask pwm3_muxmask[] = {
{
.group = 0,
.mask = BIT(7),
},
};
static const struct sirfsoc_padmux pwm3_padmux = {
.muxmask_counts = ARRAY_SIZE(pwm3_muxmask),
.muxmask = pwm3_muxmask,
};
static const unsigned pwm3_pins[] = { 7 };
static const struct sirfsoc_muxmask warm_rst_muxmask[] = {
{
.group = 0,
.mask = BIT(8),
},
};
static const struct sirfsoc_padmux warm_rst_padmux = {
.muxmask_counts = ARRAY_SIZE(warm_rst_muxmask),
.muxmask = warm_rst_muxmask,
};
static const unsigned warm_rst_pins[] = { 8 };
static const struct sirfsoc_muxmask usb0_utmi_drvbus_muxmask[] = {
{
.group = 1,
.mask = BIT(22),
},
};
static const struct sirfsoc_padmux usb0_utmi_drvbus_padmux = {
.muxmask_counts = ARRAY_SIZE(usb0_utmi_drvbus_muxmask),
.muxmask = usb0_utmi_drvbus_muxmask,
.funcmask = BIT(6),
.funcval = BIT(6), /* refer to PAD_UTMI_DRVVBUS0_ENABLE */
};
static const unsigned usb0_utmi_drvbus_pins[] = { 54 };
static const struct sirfsoc_muxmask usb1_utmi_drvbus_muxmask[] = {
{
.group = 1,
.mask = BIT(27),
},
};
static const struct sirfsoc_padmux usb1_utmi_drvbus_padmux = {
.muxmask_counts = ARRAY_SIZE(usb1_utmi_drvbus_muxmask),
.muxmask = usb1_utmi_drvbus_muxmask,
.funcmask = BIT(11),
.funcval = BIT(11), /* refer to PAD_UTMI_DRVVBUS1_ENABLE */
};
static const unsigned usb1_utmi_drvbus_pins[] = { 59 };
static const struct sirfsoc_muxmask pulse_count_muxmask[] = {
{
.group = 0,
.mask = BIT(9) | BIT(10) | BIT(11),
},
};
static const struct sirfsoc_padmux pulse_count_padmux = {
.muxmask_counts = ARRAY_SIZE(pulse_count_muxmask),
.muxmask = pulse_count_muxmask,
};
static const unsigned pulse_count_pins[] = { 9, 10, 11 };
#define SIRFSOC_PIN_GROUP(n, p) \
{ \
.name = n, \
.pins = p, \
.num_pins = ARRAY_SIZE(p), \
}
static const struct sirfsoc_pin_group sirfsoc_pin_groups[] = {
SIRFSOC_PIN_GROUP("lcd_16bitsgrp", lcd_16bits_pins),
SIRFSOC_PIN_GROUP("lcd_18bitsgrp", lcd_18bits_pins),
SIRFSOC_PIN_GROUP("lcd_24bitsgrp", lcd_24bits_pins),
SIRFSOC_PIN_GROUP("lcdrom_grp", lcdrom_pins),
SIRFSOC_PIN_GROUP("uart0grp", uart0_pins),
SIRFSOC_PIN_GROUP("uart1grp", uart1_pins),
SIRFSOC_PIN_GROUP("uart2grp", uart2_pins),
SIRFSOC_PIN_GROUP("uart2_nostreamctrlgrp", uart2_nostreamctrl_pins),
SIRFSOC_PIN_GROUP("usp0grp", usp0_pins),
SIRFSOC_PIN_GROUP("usp1grp", usp1_pins),
SIRFSOC_PIN_GROUP("usp2grp", usp2_pins),
SIRFSOC_PIN_GROUP("i2c0grp", i2c0_pins),
SIRFSOC_PIN_GROUP("i2c1grp", i2c1_pins),
SIRFSOC_PIN_GROUP("pwm0grp", pwm0_pins),
SIRFSOC_PIN_GROUP("pwm1grp", pwm1_pins),
SIRFSOC_PIN_GROUP("pwm2grp", pwm2_pins),
SIRFSOC_PIN_GROUP("pwm3grp", pwm3_pins),
SIRFSOC_PIN_GROUP("vipgrp", vip_pins),
SIRFSOC_PIN_GROUP("vipromgrp", viprom_pins),
SIRFSOC_PIN_GROUP("warm_rstgrp", warm_rst_pins),
SIRFSOC_PIN_GROUP("cko0_rstgrp", cko0_pins),
SIRFSOC_PIN_GROUP("cko1_rstgrp", cko1_pins),
SIRFSOC_PIN_GROUP("sdmmc0grp", sdmmc0_pins),
SIRFSOC_PIN_GROUP("sdmmc1grp", sdmmc1_pins),
SIRFSOC_PIN_GROUP("sdmmc2grp", sdmmc2_pins),
SIRFSOC_PIN_GROUP("sdmmc3grp", sdmmc3_pins),
SIRFSOC_PIN_GROUP("sdmmc4grp", sdmmc4_pins),
SIRFSOC_PIN_GROUP("sdmmc5grp", sdmmc5_pins),
SIRFSOC_PIN_GROUP("usb0_utmi_drvbusgrp", usb0_utmi_drvbus_pins),
SIRFSOC_PIN_GROUP("usb1_utmi_drvbusgrp", usb1_utmi_drvbus_pins),
SIRFSOC_PIN_GROUP("pulse_countgrp", pulse_count_pins),
SIRFSOC_PIN_GROUP("i2sgrp", i2s_pins),
SIRFSOC_PIN_GROUP("ac97grp", ac97_pins),
SIRFSOC_PIN_GROUP("nandgrp", nand_pins),
SIRFSOC_PIN_GROUP("spi0grp", spi0_pins),
SIRFSOC_PIN_GROUP("spi1grp", spi1_pins),
SIRFSOC_PIN_GROUP("gpsgrp", gps_pins),
};
static int sirfsoc_get_groups_count(struct pinctrl_dev *pctldev)
{
return ARRAY_SIZE(sirfsoc_pin_groups);
}
static const char *sirfsoc_get_group_name(struct pinctrl_dev *pctldev,
unsigned selector)
{
return sirfsoc_pin_groups[selector].name;
}
static int sirfsoc_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
const unsigned **pins,
unsigned *num_pins)
{
*pins = sirfsoc_pin_groups[selector].pins;
*num_pins = sirfsoc_pin_groups[selector].num_pins;
return 0;
}
static void sirfsoc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
unsigned offset)
{
seq_printf(s, " " DRIVER_NAME);
}
static int sirfsoc_dt_node_to_map(struct pinctrl_dev *pctldev,
struct device_node *np_config,
struct pinctrl_map **map, unsigned *num_maps)
{
struct sirfsoc_pmx *spmx = pinctrl_dev_get_drvdata(pctldev);
struct device_node *np;
struct property *prop;
const char *function, *group;
int ret, index = 0, count = 0;
/* calculate number of maps required */
for_each_child_of_node(np_config, np) {
ret = of_property_read_string(np, "sirf,function", &function);
if (ret < 0)
return ret;
ret = of_property_count_strings(np, "sirf,pins");
if (ret < 0)
return ret;
count += ret;
}
if (!count) {
dev_err(spmx->dev, "No child nodes passed via DT\n");
return -ENODEV;
}
*map = kzalloc(sizeof(**map) * count, GFP_KERNEL);
if (!*map)
return -ENOMEM;
for_each_child_of_node(np_config, np) {
of_property_read_string(np, "sirf,function", &function);
of_property_for_each_string(np, "sirf,pins", prop, group) {
(*map)[index].type = PIN_MAP_TYPE_MUX_GROUP;
(*map)[index].data.mux.group = group;
(*map)[index].data.mux.function = function;
index++;
}
}
*num_maps = count;
return 0;
}
static void sirfsoc_dt_free_map(struct pinctrl_dev *pctldev,
struct pinctrl_map *map, unsigned num_maps)
{
kfree(map);
}
static const struct pinctrl_ops sirfsoc_pctrl_ops = {
.get_groups_count = sirfsoc_get_groups_count,
.get_group_name = sirfsoc_get_group_name,
.get_group_pins = sirfsoc_get_group_pins,
.pin_dbg_show = sirfsoc_pin_dbg_show,
.dt_node_to_map = sirfsoc_dt_node_to_map,
.dt_free_map = sirfsoc_dt_free_map,
};
struct sirfsoc_pmx_func {
const char *name;
const char * const *groups;
const unsigned num_groups;
const struct sirfsoc_padmux *padmux;
};
static const char * const lcd_16bitsgrp[] = { "lcd_16bitsgrp" };
static const char * const lcd_18bitsgrp[] = { "lcd_18bitsgrp" };
static const char * const lcd_24bitsgrp[] = { "lcd_24bitsgrp" };
static const char * const lcdromgrp[] = { "lcdromgrp" };
static const char * const uart0grp[] = { "uart0grp" };
static const char * const uart1grp[] = { "uart1grp" };
static const char * const uart2grp[] = { "uart2grp" };
static const char * const uart2_nostreamctrlgrp[] = { "uart2_nostreamctrlgrp" };
static const char * const usp0grp[] = { "usp0grp" };
static const char * const usp1grp[] = { "usp1grp" };
static const char * const usp2grp[] = { "usp2grp" };
static const char * const i2c0grp[] = { "i2c0grp" };
static const char * const i2c1grp[] = { "i2c1grp" };
static const char * const pwm0grp[] = { "pwm0grp" };
static const char * const pwm1grp[] = { "pwm1grp" };
static const char * const pwm2grp[] = { "pwm2grp" };
static const char * const pwm3grp[] = { "pwm3grp" };
static const char * const vipgrp[] = { "vipgrp" };
static const char * const vipromgrp[] = { "vipromgrp" };
static const char * const warm_rstgrp[] = { "warm_rstgrp" };
static const char * const cko0grp[] = { "cko0grp" };
static const char * const cko1grp[] = { "cko1grp" };
static const char * const sdmmc0grp[] = { "sdmmc0grp" };
static const char * const sdmmc1grp[] = { "sdmmc1grp" };
static const char * const sdmmc2grp[] = { "sdmmc2grp" };
static const char * const sdmmc3grp[] = { "sdmmc3grp" };
static const char * const sdmmc4grp[] = { "sdmmc4grp" };
static const char * const sdmmc5grp[] = { "sdmmc5grp" };
static const char * const usb0_utmi_drvbusgrp[] = { "usb0_utmi_drvbusgrp" };
static const char * const usb1_utmi_drvbusgrp[] = { "usb1_utmi_drvbusgrp" };
static const char * const pulse_countgrp[] = { "pulse_countgrp" };
static const char * const i2sgrp[] = { "i2sgrp" };
static const char * const ac97grp[] = { "ac97grp" };
static const char * const nandgrp[] = { "nandgrp" };
static const char * const spi0grp[] = { "spi0grp" };
static const char * const spi1grp[] = { "spi1grp" };
static const char * const gpsgrp[] = { "gpsgrp" };
#define SIRFSOC_PMX_FUNCTION(n, g, m) \
{ \
.name = n, \
.groups = g, \
.num_groups = ARRAY_SIZE(g), \
.padmux = &m, \
}
static const struct sirfsoc_pmx_func sirfsoc_pmx_functions[] = {
SIRFSOC_PMX_FUNCTION("lcd_16bits", lcd_16bitsgrp, lcd_16bits_padmux),
SIRFSOC_PMX_FUNCTION("lcd_18bits", lcd_18bitsgrp, lcd_18bits_padmux),
SIRFSOC_PMX_FUNCTION("lcd_24bits", lcd_24bitsgrp, lcd_24bits_padmux),
SIRFSOC_PMX_FUNCTION("lcdrom", lcdromgrp, lcdrom_padmux),
SIRFSOC_PMX_FUNCTION("uart0", uart0grp, uart0_padmux),
SIRFSOC_PMX_FUNCTION("uart1", uart1grp, uart1_padmux),
SIRFSOC_PMX_FUNCTION("uart2", uart2grp, uart2_padmux),
SIRFSOC_PMX_FUNCTION("uart2_nostreamctrl", uart2_nostreamctrlgrp, uart2_nostreamctrl_padmux),
SIRFSOC_PMX_FUNCTION("usp0", usp0grp, usp0_padmux),
SIRFSOC_PMX_FUNCTION("usp1", usp1grp, usp1_padmux),
SIRFSOC_PMX_FUNCTION("usp2", usp2grp, usp2_padmux),
SIRFSOC_PMX_FUNCTION("i2c0", i2c0grp, i2c0_padmux),
SIRFSOC_PMX_FUNCTION("i2c1", i2c1grp, i2c1_padmux),
SIRFSOC_PMX_FUNCTION("pwm0", pwm0grp, pwm0_padmux),
SIRFSOC_PMX_FUNCTION("pwm1", pwm1grp, pwm1_padmux),
SIRFSOC_PMX_FUNCTION("pwm2", pwm2grp, pwm2_padmux),
SIRFSOC_PMX_FUNCTION("pwm3", pwm3grp, pwm3_padmux),
SIRFSOC_PMX_FUNCTION("vip", vipgrp, vip_padmux),
SIRFSOC_PMX_FUNCTION("viprom", vipromgrp, viprom_padmux),
SIRFSOC_PMX_FUNCTION("warm_rst", warm_rstgrp, warm_rst_padmux),
SIRFSOC_PMX_FUNCTION("cko0", cko0grp, cko0_padmux),
SIRFSOC_PMX_FUNCTION("cko1", cko1grp, cko1_padmux),
SIRFSOC_PMX_FUNCTION("sdmmc0", sdmmc0grp, sdmmc0_padmux),
SIRFSOC_PMX_FUNCTION("sdmmc1", sdmmc1grp, sdmmc1_padmux),
SIRFSOC_PMX_FUNCTION("sdmmc2", sdmmc2grp, sdmmc2_padmux),
SIRFSOC_PMX_FUNCTION("sdmmc3", sdmmc3grp, sdmmc3_padmux),
SIRFSOC_PMX_FUNCTION("sdmmc4", sdmmc4grp, sdmmc4_padmux),
SIRFSOC_PMX_FUNCTION("sdmmc5", sdmmc5grp, sdmmc5_padmux),
SIRFSOC_PMX_FUNCTION("usb0_utmi_drvbus", usb0_utmi_drvbusgrp, usb0_utmi_drvbus_padmux),
SIRFSOC_PMX_FUNCTION("usb1_utmi_drvbus", usb1_utmi_drvbusgrp, usb1_utmi_drvbus_padmux),
SIRFSOC_PMX_FUNCTION("pulse_count", pulse_countgrp, pulse_count_padmux),
SIRFSOC_PMX_FUNCTION("i2s", i2sgrp, i2s_padmux),
SIRFSOC_PMX_FUNCTION("ac97", ac97grp, ac97_padmux),
SIRFSOC_PMX_FUNCTION("nand", nandgrp, nand_padmux),
SIRFSOC_PMX_FUNCTION("spi0", spi0grp, spi0_padmux),
SIRFSOC_PMX_FUNCTION("spi1", spi1grp, spi1_padmux),
SIRFSOC_PMX_FUNCTION("gps", gpsgrp, gps_padmux),
};
static void sirfsoc_pinmux_endisable(struct sirfsoc_pmx *spmx, unsigned selector,
bool enable)
{
int i;
const struct sirfsoc_padmux *mux = sirfsoc_pmx_functions[selector].padmux;
const struct sirfsoc_muxmask *mask = mux->muxmask;
for (i = 0; i < mux->muxmask_counts; i++) {
u32 muxval;
if (!spmx->is_marco) {
muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
if (enable)
muxval = muxval & ~mask[i].mask;
else
muxval = muxval | mask[i].mask;
writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group));
} else {
if (enable)
writel(mask[i].mask, spmx->gpio_virtbase +
SIRFSOC_GPIO_PAD_EN_CLR(mask[i].group));
else
writel(mask[i].mask, spmx->gpio_virtbase +
SIRFSOC_GPIO_PAD_EN(mask[i].group));
}
}
if (mux->funcmask && enable) {
u32 func_en_val;
func_en_val =
readl(spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX);
func_en_val =
(func_en_val & ~mux->funcmask) | (mux->
funcval);
writel(func_en_val, spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX);
}
}
static int sirfsoc_pinmux_enable(struct pinctrl_dev *pmxdev, unsigned selector,
unsigned group)
{
struct sirfsoc_pmx *spmx;
spmx = pinctrl_dev_get_drvdata(pmxdev);
sirfsoc_pinmux_endisable(spmx, selector, true);
return 0;
}
static void sirfsoc_pinmux_disable(struct pinctrl_dev *pmxdev, unsigned selector,
unsigned group)
{
struct sirfsoc_pmx *spmx;
spmx = pinctrl_dev_get_drvdata(pmxdev);
sirfsoc_pinmux_endisable(spmx, selector, false);
}
static int sirfsoc_pinmux_get_funcs_count(struct pinctrl_dev *pmxdev)
{
return ARRAY_SIZE(sirfsoc_pmx_functions);
}
static const char *sirfsoc_pinmux_get_func_name(struct pinctrl_dev *pctldev,
unsigned selector)
{
return sirfsoc_pmx_functions[selector].name;
}
static int sirfsoc_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
const char * const **groups,
unsigned * const num_groups)
{
*groups = sirfsoc_pmx_functions[selector].groups;
*num_groups = sirfsoc_pmx_functions[selector].num_groups;
return 0;
}
static int sirfsoc_pinmux_request_gpio(struct pinctrl_dev *pmxdev,
struct pinctrl_gpio_range *range, unsigned offset)
{
struct sirfsoc_pmx *spmx;
int group = range->id;
u32 muxval;
spmx = pinctrl_dev_get_drvdata(pmxdev);
if (!spmx->is_marco) {
muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
muxval = muxval | (1 << (offset - range->pin_base));
writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group));
} else {
writel(1 << (offset - range->pin_base), spmx->gpio_virtbase +
SIRFSOC_GPIO_PAD_EN(group));
}
return 0;
}
static const struct pinmux_ops sirfsoc_pinmux_ops = {
.enable = sirfsoc_pinmux_enable,
.disable = sirfsoc_pinmux_disable,
.get_functions_count = sirfsoc_pinmux_get_funcs_count,
.get_function_name = sirfsoc_pinmux_get_func_name,
.get_function_groups = sirfsoc_pinmux_get_groups,
.gpio_request_enable = sirfsoc_pinmux_request_gpio,
};
static struct pinctrl_desc sirfsoc_pinmux_desc = {
.name = DRIVER_NAME,
.pins = sirfsoc_pads,
.npins = ARRAY_SIZE(sirfsoc_pads),
.pctlops = &sirfsoc_pctrl_ops,
.pmxops = &sirfsoc_pinmux_ops,
.owner = THIS_MODULE,
};
/*
* Todo: bind irq_chip to every pinctrl_gpio_range
*/
static struct pinctrl_gpio_range sirfsoc_gpio_ranges[] = {
{
.name = "sirfsoc-gpio*",
.id = 0,
.base = 0,
.pin_base = 0,
.npins = 32,
}, {
.name = "sirfsoc-gpio*",
.id = 1,
.base = 32,
.pin_base = 32,
.npins = 32,
}, {
.name = "sirfsoc-gpio*",
.id = 2,
.base = 64,
.pin_base = 64,
.npins = 32,
}, {
.name = "sirfsoc-gpio*",
.id = 3,
.base = 96,
.pin_base = 96,
.npins = 19,
},
};
static void __iomem *sirfsoc_rsc_of_iomap(void)
{
const struct of_device_id rsc_ids[] = {
{ .compatible = "sirf,prima2-rsc" },
{ .compatible = "sirf,marco-rsc" },
{}
};
struct device_node *np;
np = of_find_matching_node(NULL, rsc_ids);
if (!np)
panic("unable to find compatible rsc node in dtb\n");
return of_iomap(np, 0);
}
static int sirfsoc_gpio_of_xlate(struct gpio_chip *gc,
const struct of_phandle_args *gpiospec,
u32 *flags)
{
if (gpiospec->args[0] > SIRFSOC_GPIO_NO_OF_BANKS * SIRFSOC_GPIO_BANK_SIZE)
return -EINVAL;
if (gc != &sgpio_bank[gpiospec->args[0] / SIRFSOC_GPIO_BANK_SIZE].chip.gc)
return -EINVAL;
if (flags)
*flags = gpiospec->args[1];
return gpiospec->args[0] % SIRFSOC_GPIO_BANK_SIZE;
}
static int sirfsoc_pinmux_probe(struct platform_device *pdev)
{
int ret;
struct sirfsoc_pmx *spmx;
struct device_node *np = pdev->dev.of_node;
int i;
/* Create state holders etc for this driver */
spmx = devm_kzalloc(&pdev->dev, sizeof(*spmx), GFP_KERNEL);
if (!spmx)
return -ENOMEM;
spmx->dev = &pdev->dev;
platform_set_drvdata(pdev, spmx);
spmx->gpio_virtbase = of_iomap(np, 0);
if (!spmx->gpio_virtbase) {
ret = -ENOMEM;
dev_err(&pdev->dev, "can't map gpio registers\n");
goto out_no_gpio_remap;
}
spmx->rsc_virtbase = sirfsoc_rsc_of_iomap();
if (!spmx->rsc_virtbase) {
ret = -ENOMEM;
dev_err(&pdev->dev, "can't map rsc registers\n");
goto out_no_rsc_remap;
}
if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
spmx->is_marco = 1;
/* Now register the pin controller and all pins it handles */
spmx->pmx = pinctrl_register(&sirfsoc_pinmux_desc, &pdev->dev, spmx);
if (!spmx->pmx) {
dev_err(&pdev->dev, "could not register SIRFSOC pinmux driver\n");
ret = -EINVAL;
goto out_no_pmx;
}
for (i = 0; i < ARRAY_SIZE(sirfsoc_gpio_ranges); i++) {
sirfsoc_gpio_ranges[i].gc = &sgpio_bank[i].chip.gc;
pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges[i]);
}
dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n");
return 0;
out_no_pmx:
iounmap(spmx->rsc_virtbase);
out_no_rsc_remap:
iounmap(spmx->gpio_virtbase);
out_no_gpio_remap:
platform_set_drvdata(pdev, NULL);
return ret;
}
static const struct of_device_id pinmux_ids[] = {
{ .compatible = "sirf,prima2-pinctrl" },
{ .compatible = "sirf,marco-pinctrl" },
{}
};
static struct platform_driver sirfsoc_pinmux_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.of_match_table = pinmux_ids,
},
.probe = sirfsoc_pinmux_probe,
};
static int __init sirfsoc_pinmux_init(void)
{
return platform_driver_register(&sirfsoc_pinmux_driver);
}
arch_initcall(sirfsoc_pinmux_init);
static inline int sirfsoc_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
struct sirfsoc_gpio_bank *bank = container_of(to_of_mm_gpio_chip(chip),
struct sirfsoc_gpio_bank, chip);
return irq_create_mapping(bank->domain, offset);
}
static inline int sirfsoc_gpio_to_offset(unsigned int gpio)
{
return gpio % SIRFSOC_GPIO_BANK_SIZE;
}
static inline struct sirfsoc_gpio_bank *sirfsoc_gpio_to_bank(unsigned int gpio)
{
return &sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE];
}
static inline struct sirfsoc_gpio_bank *sirfsoc_irqchip_to_bank(struct gpio_chip *chip)
{
return container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip);
}
static void sirfsoc_gpio_irq_ack(struct irq_data *d)
{
struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
u32 val, offset;
unsigned long flags;
offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
spin_lock_irqsave(&sgpio_lock, flags);
val = readl(bank->chip.regs + offset);
writel(val, bank->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank *bank, int idx)
{
u32 val, offset;
unsigned long flags;
offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
spin_lock_irqsave(&sgpio_lock, flags);
val = readl(bank->chip.regs + offset);
val &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
writel(val, bank->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
static void sirfsoc_gpio_irq_mask(struct irq_data *d)
{
struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
__sirfsoc_gpio_irq_mask(bank, d->hwirq % SIRFSOC_GPIO_BANK_SIZE);
}
static void sirfsoc_gpio_irq_unmask(struct irq_data *d)
{
struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
u32 val, offset;
unsigned long flags;
offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
spin_lock_irqsave(&sgpio_lock, flags);
val = readl(bank->chip.regs + offset);
val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
val |= SIRFSOC_GPIO_CTL_INTR_EN_MASK;
writel(val, bank->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
}
static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type)
{
struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d);
int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE;
u32 val, offset;
unsigned long flags;
offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
spin_lock_irqsave(&sgpio_lock, flags);
val = readl(bank->chip.regs + offset);
val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK;
switch (type) {
case IRQ_TYPE_NONE:
break;
case IRQ_TYPE_EDGE_RISING:
val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
val &= ~SIRFSOC_GPIO_CTL_INTR_LOW_MASK;
break;
case IRQ_TYPE_EDGE_FALLING:
val &= ~SIRFSOC_GPIO_CTL_INTR_HIGH_MASK;
val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
break;
case IRQ_TYPE_EDGE_BOTH:
val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_LOW_MASK |
SIRFSOC_GPIO_CTL_INTR_TYPE_MASK;
break;
case IRQ_TYPE_LEVEL_LOW:
val &= ~(SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK);
val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK;
break;
case IRQ_TYPE_LEVEL_HIGH:
val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK;
val &= ~(SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK);
break;
}
writel(val, bank->chip.regs + offset);
spin_unlock_irqrestore(&sgpio_lock, flags);
return 0;
}
static struct irq_chip sirfsoc_irq_chip = {
.name = "sirf-gpio-irq",
.irq_ack = sirfsoc_gpio_irq_ack,
.irq_mask = sirfsoc_gpio_irq_mask,
.irq_unmask = sirfsoc_gpio_irq_unmask,
.irq_set_type = sirfsoc_gpio_irq_type,
};
static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
{
struct sirfsoc_gpio_bank *bank = irq_get_handler_data(irq);
u32 status, ctrl;
int idx = 0;
struct irq_chip *chip = irq_get_chip(irq);
chained_irq_enter(chip, desc);
status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
if (!status) {
printk(KERN_WARNING
"%s: gpio id %d status %#x no interrupt is flaged\n",
__func__, bank->id, status);
handle_bad_irq(irq, desc);
return;
}
while (status) {
ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx));
/*
* Here we must check whether the corresponding GPIO's interrupt
* has been enabled, otherwise just skip it
*/
if ((status & 0x1) && (ctrl & SIRFSOC_GPIO_CTL_INTR_EN_MASK)) {
pr_debug("%s: gpio id %d idx %d happens\n",
__func__, bank->id, idx);
generic_handle_irq(irq_find_mapping(bank->domain, idx));
}
idx++;
status = status >> 1;
}
chained_irq_exit(chip, desc);
}
static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsigned ctrl_offset)
{
u32 val;
val = readl(bank->chip.regs + ctrl_offset);
val &= ~SIRFSOC_GPIO_CTL_OUT_EN_MASK;
writel(val, bank->chip.regs + ctrl_offset);
}
static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
unsigned long flags;
if (pinctrl_request_gpio(chip->base + offset))
return -ENODEV;
spin_lock_irqsave(&bank->lock, flags);
/*
* default status:
* set direction as input and mask irq
*/
sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
__sirfsoc_gpio_irq_mask(bank, offset);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
}
static void sirfsoc_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
__sirfsoc_gpio_irq_mask(bank, offset);
sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
pinctrl_free_gpio(chip->base + offset);
}
static int sirfsoc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
int idx = sirfsoc_gpio_to_offset(gpio);
unsigned long flags;
unsigned offset;
offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
spin_lock_irqsave(&bank->lock, flags);
sirfsoc_gpio_set_input(bank, offset);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
}
static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsigned offset,
int value)
{
u32 out_ctrl;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
out_ctrl = readl(bank->chip.regs + offset);
if (value)
out_ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
else
out_ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
out_ctrl &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK;
out_ctrl |= SIRFSOC_GPIO_CTL_OUT_EN_MASK;
writel(out_ctrl, bank->chip.regs + offset);
spin_unlock_irqrestore(&bank->lock, flags);
}
static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
int idx = sirfsoc_gpio_to_offset(gpio);
u32 offset;
unsigned long flags;
offset = SIRFSOC_GPIO_CTRL(bank->id, idx);
spin_lock_irqsave(&sgpio_lock, flags);
sirfsoc_gpio_set_output(bank, offset, value);
spin_unlock_irqrestore(&sgpio_lock, flags);
return 0;
}
static int sirfsoc_gpio_get_value(struct gpio_chip *chip, unsigned offset)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
u32 val;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
val = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
return !!(val & SIRFSOC_GPIO_CTL_DATAIN_MASK);
}
static void sirfsoc_gpio_set_value(struct gpio_chip *chip, unsigned offset,
int value)
{
struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip);
u32 ctrl;
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
if (value)
ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK;
else
ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK;
writel(ctrl, bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset));
spin_unlock_irqrestore(&bank->lock, flags);
}
static int sirfsoc_gpio_irq_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq)
{
struct sirfsoc_gpio_bank *bank = d->host_data;
if (!bank)
return -EINVAL;
irq_set_chip(irq, &sirfsoc_irq_chip);
irq_set_handler(irq, handle_level_irq);
irq_set_chip_data(irq, bank);
set_irq_flags(irq, IRQF_VALID);
return 0;
}
const struct irq_domain_ops sirfsoc_gpio_irq_simple_ops = {
.map = sirfsoc_gpio_irq_map,
.xlate = irq_domain_xlate_twocell,
};
static void sirfsoc_gpio_set_pullup(const u32 *pullups)
{
int i, n;
const unsigned long *p = (const unsigned long *)pullups;
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
for_each_set_bit(n, p + i, BITS_PER_LONG) {
u32 offset = SIRFSOC_GPIO_CTRL(i, n);
u32 val = readl(sgpio_bank[i].chip.regs + offset);
val |= SIRFSOC_GPIO_CTL_PULL_MASK;
val |= SIRFSOC_GPIO_CTL_PULL_HIGH;
writel(val, sgpio_bank[i].chip.regs + offset);
}
}
}
static void sirfsoc_gpio_set_pulldown(const u32 *pulldowns)
{
int i, n;
const unsigned long *p = (const unsigned long *)pulldowns;
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
for_each_set_bit(n, p + i, BITS_PER_LONG) {
u32 offset = SIRFSOC_GPIO_CTRL(i, n);
u32 val = readl(sgpio_bank[i].chip.regs + offset);
val |= SIRFSOC_GPIO_CTL_PULL_MASK;
val &= ~SIRFSOC_GPIO_CTL_PULL_HIGH;
writel(val, sgpio_bank[i].chip.regs + offset);
}
}
}
static int sirfsoc_gpio_probe(struct device_node *np)
{
int i, err = 0;
struct sirfsoc_gpio_bank *bank;
void *regs;
struct platform_device *pdev;
bool is_marco = false;
u32 pullups[SIRFSOC_GPIO_NO_OF_BANKS], pulldowns[SIRFSOC_GPIO_NO_OF_BANKS];
pdev = of_find_device_by_node(np);
if (!pdev)
return -ENODEV;
regs = of_iomap(np, 0);
if (!regs)
return -ENOMEM;
if (of_device_is_compatible(np, "sirf,marco-pinctrl"))
is_marco = 1;
for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) {
bank = &sgpio_bank[i];
spin_lock_init(&bank->lock);
bank->chip.gc.request = sirfsoc_gpio_request;
bank->chip.gc.free = sirfsoc_gpio_free;
bank->chip.gc.direction_input = sirfsoc_gpio_direction_input;
bank->chip.gc.get = sirfsoc_gpio_get_value;
bank->chip.gc.direction_output = sirfsoc_gpio_direction_output;
bank->chip.gc.set = sirfsoc_gpio_set_value;
bank->chip.gc.to_irq = sirfsoc_gpio_to_irq;
bank->chip.gc.base = i * SIRFSOC_GPIO_BANK_SIZE;
bank->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE;
bank->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
bank->chip.gc.of_node = np;
bank->chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
bank->chip.gc.of_gpio_n_cells = 2;
bank->chip.regs = regs;
bank->id = i;
bank->is_marco = is_marco;
bank->parent_irq = platform_get_irq(pdev, i);
if (bank->parent_irq < 0) {
err = bank->parent_irq;
goto out;
}
err = gpiochip_add(&bank->chip.gc);
if (err) {
pr_err("%s: error in probe function with status %d\n",
np->full_name, err);
goto out;
}
bank->domain = irq_domain_add_linear(np, SIRFSOC_GPIO_BANK_SIZE,
&sirfsoc_gpio_irq_simple_ops, bank);
if (!bank->domain) {
pr_err("%s: Failed to create irqdomain\n", np->full_name);
err = -ENOSYS;
goto out;
}
irq_set_chained_handler(bank->parent_irq, sirfsoc_gpio_handle_irq);
irq_set_handler_data(bank->parent_irq, bank);
}
if (!of_property_read_u32_array(np, "sirf,pullups", pullups,
SIRFSOC_GPIO_NO_OF_BANKS))
sirfsoc_gpio_set_pullup(pullups);
if (!of_property_read_u32_array(np, "sirf,pulldowns", pulldowns,
SIRFSOC_GPIO_NO_OF_BANKS))
sirfsoc_gpio_set_pulldown(pulldowns);
return 0;
out:
iounmap(regs);
return err;
}
static int __init sirfsoc_gpio_init(void)
{
struct device_node *np;
np = of_find_matching_node(NULL, pinmux_ids);
if (!np)
return -ENODEV;
return sirfsoc_gpio_probe(np);
}
subsys_initcall(sirfsoc_gpio_init);
MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
"Yuping Luo <yuping.luo@csr.com>, "
"Barry Song <baohua.song@csr.com>");
MODULE_DESCRIPTION("SIRFSOC pin control driver");
MODULE_LICENSE("GPL");