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linux/drivers/pinctrl/pinctrl-sirf.c
Viresh Kumar d1e90e9e74 pinctrl: replace list_*() with get_*_count() 
Most of the SoC drivers implement list_groups() and list_functions()
routines for pinctrl and pinmux. These routines continue returning
zero until the selector argument is greater than total count of
available groups or functions.

This patch replaces these list_*() routines with get_*_count()
routines, which returns the number of available selection for SoC
driver. pinctrl layer will use this value to check the range it can
choose.

This patch fixes all user drivers for this change. There are other
routines in user drivers, which have checks to check validity of
selector passed to them. It is also no more required and hence
removed.

Documentation updated as well.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
[Folded in fix and fixed a minor merge artifact manually]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-18 13:53:10 +02:00

1211 lines
32 KiB
C
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/*
* 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/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/bitops.h>
#define DRIVER_NAME "pinmux-sirf"
#define SIRFSOC_NUM_PADS 622
#define SIRFSOC_GPIO_PAD_EN(g) ((g)*0x100 + 0x84)
#define SIRFSOC_RSC_PIN_MUX 0x4
/*
* pad list for the pinmux subsystem
* refer to CS-131858-DC-6A.xls
*/
static const struct pinctrl_pin_desc sirfsoc_pads[] = {
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(13, "scl_1"),
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;
};
/* 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 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,
};
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;
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));
}
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);
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));
return 0;
}
static 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" },
{}
};
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 __devinit 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;
}
/* 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++)
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);
devm_kfree(&pdev->dev, spmx);
return ret;
}
static const struct of_device_id pinmux_ids[] = {
{ .compatible = "sirf,prima2-gpio-pinmux" },
{}
};
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);
MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
"Barry Song <baohua.song@csr.com>");
MODULE_DESCRIPTION("SIRFSOC pin control driver");
MODULE_LICENSE("GPL");
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