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linux/drivers/pinctrl/mvebu/pinctrl-dove.c
Sebastian Hesselbarth 3c7d563789 pinctrl: mvebu: silence WARN to dev_warn 
Pinctrl will WARN on missing DT resources, which is a little bit too
noisy. Use dev_warn with FW_BUG instead.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-03-12 15:00:04 +01:00

866 lines
28 KiB
C
Raw Blame History

/*
* Marvell Dove pinctrl driver based on mvebu pinctrl core
*
* Author: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/mfd/syscon.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/regmap.h>
#include "pinctrl-mvebu.h"
/* Internal registers can be configured at any 1 MiB aligned address */
#define INT_REGS_MASK ~(SZ_1M - 1)
#define MPP4_REGS_OFFS 0xd0440
#define PMU_REGS_OFFS 0xd802c
#define GC_REGS_OFFS 0xe802c
/* MPP Base registers */
#define PMU_MPP_GENERAL_CTRL 0x10
#define AU0_AC97_SEL BIT(16)
/* MPP Control 4 register */
#define SPI_GPIO_SEL BIT(5)
#define UART1_GPIO_SEL BIT(4)
#define AU1_GPIO_SEL BIT(3)
#define CAM_GPIO_SEL BIT(2)
#define SD1_GPIO_SEL BIT(1)
#define SD0_GPIO_SEL BIT(0)
/* PMU Signal Select registers */
#define PMU_SIGNAL_SELECT_0 0x00
#define PMU_SIGNAL_SELECT_1 0x04
/* Global Config regmap registers */
#define GLOBAL_CONFIG_1 0x00
#define TWSI_ENABLE_OPTION1 BIT(7)
#define GLOBAL_CONFIG_2 0x04
#define TWSI_ENABLE_OPTION2 BIT(20)
#define TWSI_ENABLE_OPTION3 BIT(21)
#define TWSI_OPTION3_GPIO BIT(22)
#define SSP_CTRL_STATUS_1 0x08
#define SSP_ON_AU1 BIT(0)
#define MPP_GENERAL_CONFIG 0x10
#define AU1_SPDIFO_GPIO_EN BIT(1)
#define NAND_GPIO_EN BIT(0)
#define CONFIG_PMU BIT(4)
static void __iomem *mpp_base;
static void __iomem *mpp4_base;
static void __iomem *pmu_base;
static struct regmap *gconfmap;
static int dove_mpp_ctrl_get(unsigned pid, unsigned long *config)
{
return default_mpp_ctrl_get(mpp_base, pid, config);
}
static int dove_mpp_ctrl_set(unsigned pid, unsigned long config)
{
return default_mpp_ctrl_set(mpp_base, pid, config);
}
static int dove_pmu_mpp_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
unsigned long func;
if ((pmu & BIT(pid)) == 0)
return default_mpp_ctrl_get(mpp_base, pid, config);
func = readl(pmu_base + PMU_SIGNAL_SELECT_0 + off);
*config = (func >> shift) & MVEBU_MPP_MASK;
*config |= CONFIG_PMU;
return 0;
}
static int dove_pmu_mpp_ctrl_set(unsigned pid, unsigned long config)
{
unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
unsigned long func;
if ((config & CONFIG_PMU) == 0) {
writel(pmu & ~BIT(pid), mpp_base + PMU_MPP_GENERAL_CTRL);
return default_mpp_ctrl_set(mpp_base, pid, config);
}
writel(pmu | BIT(pid), mpp_base + PMU_MPP_GENERAL_CTRL);
func = readl(pmu_base + PMU_SIGNAL_SELECT_0 + off);
func &= ~(MVEBU_MPP_MASK << shift);
func |= (config & MVEBU_MPP_MASK) << shift;
writel(func, pmu_base + PMU_SIGNAL_SELECT_0 + off);
return 0;
}
static int dove_mpp4_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long mpp4 = readl(mpp4_base);
unsigned long mask;
switch (pid) {
case 24: /* mpp_camera */
mask = CAM_GPIO_SEL;
break;
case 40: /* mpp_sdio0 */
mask = SD0_GPIO_SEL;
break;
case 46: /* mpp_sdio1 */
mask = SD1_GPIO_SEL;
break;
case 58: /* mpp_spi0 */
mask = SPI_GPIO_SEL;
break;
case 62: /* mpp_uart1 */
mask = UART1_GPIO_SEL;
break;
default:
return -EINVAL;
}
*config = ((mpp4 & mask) != 0);
return 0;
}
static int dove_mpp4_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long mpp4 = readl(mpp4_base);
unsigned long mask;
switch (pid) {
case 24: /* mpp_camera */
mask = CAM_GPIO_SEL;
break;
case 40: /* mpp_sdio0 */
mask = SD0_GPIO_SEL;
break;
case 46: /* mpp_sdio1 */
mask = SD1_GPIO_SEL;
break;
case 58: /* mpp_spi0 */
mask = SPI_GPIO_SEL;
break;
case 62: /* mpp_uart1 */
mask = UART1_GPIO_SEL;
break;
default:
return -EINVAL;
}
mpp4 &= ~mask;
if (config)
mpp4 |= mask;
writel(mpp4, mpp4_base);
return 0;
}
static int dove_nand_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned int gmpp;
regmap_read(gconfmap, MPP_GENERAL_CONFIG, &gmpp);
*config = ((gmpp & NAND_GPIO_EN) != 0);
return 0;
}
static int dove_nand_ctrl_set(unsigned pid, unsigned long config)
{
regmap_update_bits(gconfmap, MPP_GENERAL_CONFIG,
NAND_GPIO_EN,
(config) ? NAND_GPIO_EN : 0);
return 0;
}
static int dove_audio0_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
*config = ((pmu & AU0_AC97_SEL) != 0);
return 0;
}
static int dove_audio0_ctrl_set(unsigned pid, unsigned long config)
{
unsigned long pmu = readl(mpp_base + PMU_MPP_GENERAL_CTRL);
pmu &= ~AU0_AC97_SEL;
if (config)
pmu |= AU0_AC97_SEL;
writel(pmu, mpp_base + PMU_MPP_GENERAL_CTRL);
return 0;
}
static int dove_audio1_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned int mpp4 = readl(mpp4_base);
unsigned int sspc1;
unsigned int gmpp;
unsigned int gcfg2;
regmap_read(gconfmap, SSP_CTRL_STATUS_1, &sspc1);
regmap_read(gconfmap, MPP_GENERAL_CONFIG, &gmpp);
regmap_read(gconfmap, GLOBAL_CONFIG_2, &gcfg2);
*config = 0;
if (mpp4 & AU1_GPIO_SEL)
*config |= BIT(3);
if (sspc1 & SSP_ON_AU1)
*config |= BIT(2);
if (gmpp & AU1_SPDIFO_GPIO_EN)
*config |= BIT(1);
if (gcfg2 & TWSI_OPTION3_GPIO)
*config |= BIT(0);
/* SSP/TWSI only if I2S1 not set*/
if ((*config & BIT(3)) == 0)
*config &= ~(BIT(2) | BIT(0));
/* TWSI only if SPDIFO not set*/
if ((*config & BIT(1)) == 0)
*config &= ~BIT(0);
return 0;
}
static int dove_audio1_ctrl_set(unsigned pid, unsigned long config)
{
unsigned int mpp4 = readl(mpp4_base);
mpp4 &= ~AU1_GPIO_SEL;
if (config & BIT(3))
mpp4 |= AU1_GPIO_SEL;
writel(mpp4, mpp4_base);
regmap_update_bits(gconfmap, SSP_CTRL_STATUS_1,
SSP_ON_AU1,
(config & BIT(2)) ? SSP_ON_AU1 : 0);
regmap_update_bits(gconfmap, MPP_GENERAL_CONFIG,
AU1_SPDIFO_GPIO_EN,
(config & BIT(1)) ? AU1_SPDIFO_GPIO_EN : 0);
regmap_update_bits(gconfmap, GLOBAL_CONFIG_2,
TWSI_OPTION3_GPIO,
(config & BIT(0)) ? TWSI_OPTION3_GPIO : 0);
return 0;
}
/* mpp[52:57] gpio pins depend heavily on current config;
* gpio_req does not try to mux in gpio capabilities to not
* break other functions. If you require all mpps as gpio
* enforce gpio setting by pinctrl mapping.
*/
static int dove_audio1_ctrl_gpio_req(unsigned pid)
{
unsigned long config;
dove_audio1_ctrl_get(pid, &config);
switch (config) {
case 0x02: /* i2s1 : gpio[56:57] */
case 0x0e: /* ssp : gpio[56:57] */
if (pid >= 56)
return 0;
return -ENOTSUPP;
case 0x08: /* spdifo : gpio[52:55] */
case 0x0b: /* twsi : gpio[52:55] */
if (pid <= 55)
return 0;
return -ENOTSUPP;
case 0x0a: /* all gpio */
return 0;
/* 0x00 : i2s1/spdifo : no gpio */
/* 0x0c : ssp/spdifo : no gpio */
/* 0x0f : ssp/twsi : no gpio */
}
return -ENOTSUPP;
}
/* mpp[52:57] has gpio pins capable of in and out */
static int dove_audio1_ctrl_gpio_dir(unsigned pid, bool input)
{
if (pid < 52 || pid > 57)
return -ENOTSUPP;
return 0;
}
static int dove_twsi_ctrl_get(unsigned pid, unsigned long *config)
{
unsigned int gcfg1;
unsigned int gcfg2;
regmap_read(gconfmap, GLOBAL_CONFIG_1, &gcfg1);
regmap_read(gconfmap, GLOBAL_CONFIG_2, &gcfg2);
*config = 0;
if (gcfg1 & TWSI_ENABLE_OPTION1)
*config = 1;
else if (gcfg2 & TWSI_ENABLE_OPTION2)
*config = 2;
else if (gcfg2 & TWSI_ENABLE_OPTION3)
*config = 3;
return 0;
}
static int dove_twsi_ctrl_set(unsigned pid, unsigned long config)
{
unsigned int gcfg1 = 0;
unsigned int gcfg2 = 0;
switch (config) {
case 1:
gcfg1 = TWSI_ENABLE_OPTION1;
break;
case 2:
gcfg2 = TWSI_ENABLE_OPTION2;
break;
case 3:
gcfg2 = TWSI_ENABLE_OPTION3;
break;
}
regmap_update_bits(gconfmap, GLOBAL_CONFIG_1,
TWSI_ENABLE_OPTION1,
gcfg1);
regmap_update_bits(gconfmap, GLOBAL_CONFIG_2,
TWSI_ENABLE_OPTION2 | TWSI_ENABLE_OPTION3,
gcfg2);
return 0;
}
static struct mvebu_mpp_ctrl dove_mpp_controls[] = {
MPP_FUNC_CTRL(0, 15, NULL, dove_pmu_mpp_ctrl),
MPP_FUNC_CTRL(16, 23, NULL, dove_mpp_ctrl),
MPP_FUNC_CTRL(24, 39, "mpp_camera", dove_mpp4_ctrl),
MPP_FUNC_CTRL(40, 45, "mpp_sdio0", dove_mpp4_ctrl),
MPP_FUNC_CTRL(46, 51, "mpp_sdio1", dove_mpp4_ctrl),
MPP_FUNC_GPIO_CTRL(52, 57, "mpp_audio1", dove_audio1_ctrl),
MPP_FUNC_CTRL(58, 61, "mpp_spi0", dove_mpp4_ctrl),
MPP_FUNC_CTRL(62, 63, "mpp_uart1", dove_mpp4_ctrl),
MPP_FUNC_CTRL(64, 71, "mpp_nand", dove_nand_ctrl),
MPP_FUNC_CTRL(72, 72, "audio0", dove_audio0_ctrl),
MPP_FUNC_CTRL(73, 73, "twsi", dove_twsi_ctrl),
};
static struct mvebu_mpp_mode dove_mpp_modes[] = {
MPP_MODE(0,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart2", "rts"),
MPP_FUNCTION(0x03, "sdio0", "cd"),
MPP_FUNCTION(0x0f, "lcd0", "pwm"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(1,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart2", "cts"),
MPP_FUNCTION(0x03, "sdio0", "wp"),
MPP_FUNCTION(0x0f, "lcd1", "pwm"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(2,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "sata", "prsnt"),
MPP_FUNCTION(0x02, "uart2", "txd"),
MPP_FUNCTION(0x03, "sdio0", "buspwr"),
MPP_FUNCTION(0x04, "uart1", "rts"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(3,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "sata", "act"),
MPP_FUNCTION(0x02, "uart2", "rxd"),
MPP_FUNCTION(0x03, "sdio0", "ledctrl"),
MPP_FUNCTION(0x04, "uart1", "cts"),
MPP_FUNCTION(0x0f, "lcd-spi", "cs1"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(4,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "rts"),
MPP_FUNCTION(0x03, "sdio1", "cd"),
MPP_FUNCTION(0x04, "spi1", "miso"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(5,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "cts"),
MPP_FUNCTION(0x03, "sdio1", "wp"),
MPP_FUNCTION(0x04, "spi1", "cs"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(6,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "txd"),
MPP_FUNCTION(0x03, "sdio1", "buspwr"),
MPP_FUNCTION(0x04, "spi1", "mosi"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(7,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "rxd"),
MPP_FUNCTION(0x03, "sdio1", "ledctrl"),
MPP_FUNCTION(0x04, "spi1", "sck"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "core-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(8,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "watchdog", "rstout"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(9,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x05, "pex1", "clkreq"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(10,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x05, "ssp", "sclk"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(11,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "sata", "prsnt"),
MPP_FUNCTION(0x02, "sata-1", "act"),
MPP_FUNCTION(0x03, "sdio0", "ledctrl"),
MPP_FUNCTION(0x04, "sdio1", "ledctrl"),
MPP_FUNCTION(0x05, "pex0", "clkreq"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(12,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "sata", "act"),
MPP_FUNCTION(0x02, "uart2", "rts"),
MPP_FUNCTION(0x03, "audio0", "extclk"),
MPP_FUNCTION(0x04, "sdio1", "cd"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(13,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart2", "cts"),
MPP_FUNCTION(0x03, "audio1", "extclk"),
MPP_FUNCTION(0x04, "sdio1", "wp"),
MPP_FUNCTION(0x05, "ssp", "extclk"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(14,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart2", "txd"),
MPP_FUNCTION(0x04, "sdio1", "buspwr"),
MPP_FUNCTION(0x05, "ssp", "rxd"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(15,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart2", "rxd"),
MPP_FUNCTION(0x04, "sdio1", "ledctrl"),
MPP_FUNCTION(0x05, "ssp", "sfrm"),
MPP_FUNCTION(CONFIG_PMU | 0x0, "pmu-nc", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x1, "pmu-low", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x2, "pmu-high", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x3, "pmic", "sdi"),
MPP_FUNCTION(CONFIG_PMU | 0x4, "cpu-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x5, "standby-pwr-down", NULL),
MPP_FUNCTION(CONFIG_PMU | 0x8, "cpu-pwr-good", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xa, "bat-fault", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xb, "ext0-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xc, "ext1-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xd, "ext2-wakeup", NULL),
MPP_FUNCTION(CONFIG_PMU | 0xe, "pmu-blink", NULL)),
MPP_MODE(16,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "rts"),
MPP_FUNCTION(0x03, "sdio0", "cd"),
MPP_FUNCTION(0x04, "lcd-spi", "cs1"),
MPP_FUNCTION(0x05, "ac97", "sdi1")),
MPP_MODE(17,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "ac97-1", "sysclko"),
MPP_FUNCTION(0x02, "uart3", "cts"),
MPP_FUNCTION(0x03, "sdio0", "wp"),
MPP_FUNCTION(0x04, "twsi", "sda"),
MPP_FUNCTION(0x05, "ac97", "sdi2")),
MPP_MODE(18,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "txd"),
MPP_FUNCTION(0x03, "sdio0", "buspwr"),
MPP_FUNCTION(0x04, "lcd0", "pwm"),
MPP_FUNCTION(0x05, "ac97", "sdi3")),
MPP_MODE(19,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "uart3", "rxd"),
MPP_FUNCTION(0x03, "sdio0", "ledctrl"),
MPP_FUNCTION(0x04, "twsi", "sck")),
MPP_MODE(20,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "ac97", "sysclko"),
MPP_FUNCTION(0x02, "lcd-spi", "miso"),
MPP_FUNCTION(0x03, "sdio1", "cd"),
MPP_FUNCTION(0x05, "sdio0", "cd"),
MPP_FUNCTION(0x06, "spi1", "miso")),
MPP_MODE(21,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "uart1", "rts"),
MPP_FUNCTION(0x02, "lcd-spi", "cs0"),
MPP_FUNCTION(0x03, "sdio1", "wp"),
MPP_FUNCTION(0x04, "ssp", "sfrm"),
MPP_FUNCTION(0x05, "sdio0", "wp"),
MPP_FUNCTION(0x06, "spi1", "cs")),
MPP_MODE(22,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x01, "uart1", "cts"),
MPP_FUNCTION(0x02, "lcd-spi", "mosi"),
MPP_FUNCTION(0x03, "sdio1", "buspwr"),
MPP_FUNCTION(0x04, "ssp", "txd"),
MPP_FUNCTION(0x05, "sdio0", "buspwr"),
MPP_FUNCTION(0x06, "spi1", "mosi")),
MPP_MODE(23,
MPP_FUNCTION(0x00, "gpio", NULL),
MPP_FUNCTION(0x02, "lcd-spi", "sck"),
MPP_FUNCTION(0x03, "sdio1", "ledctrl"),
MPP_FUNCTION(0x04, "ssp", "sclk"),
MPP_FUNCTION(0x05, "sdio0", "ledctrl"),
MPP_FUNCTION(0x06, "spi1", "sck")),
MPP_MODE(24,
MPP_FUNCTION(0x00, "camera", NULL),
MPP_FUNCTION(0x01, "gpio", NULL)),
MPP_MODE(40,
MPP_FUNCTION(0x00, "sdio0", NULL),
MPP_FUNCTION(0x01, "gpio", NULL)),
MPP_MODE(46,
MPP_FUNCTION(0x00, "sdio1", NULL),
MPP_FUNCTION(0x01, "gpio", NULL)),
MPP_MODE(52,
MPP_FUNCTION(0x00, "i2s1/spdifo", NULL),
MPP_FUNCTION(0x02, "i2s1", NULL),
MPP_FUNCTION(0x08, "spdifo", NULL),
MPP_FUNCTION(0x0a, "gpio", NULL),
MPP_FUNCTION(0x0b, "twsi", NULL),
MPP_FUNCTION(0x0c, "ssp/spdifo", NULL),
MPP_FUNCTION(0x0e, "ssp", NULL),
MPP_FUNCTION(0x0f, "ssp/twsi", NULL)),
MPP_MODE(58,
MPP_FUNCTION(0x00, "spi0", NULL),
MPP_FUNCTION(0x01, "gpio", NULL)),
MPP_MODE(62,
MPP_FUNCTION(0x00, "uart1", NULL),
MPP_FUNCTION(0x01, "gpio", NULL)),
MPP_MODE(64,
MPP_FUNCTION(0x00, "nand", NULL),
MPP_FUNCTION(0x01, "gpo", NULL)),
MPP_MODE(72,
MPP_FUNCTION(0x00, "i2s", NULL),
MPP_FUNCTION(0x01, "ac97", NULL)),
MPP_MODE(73,
MPP_FUNCTION(0x00, "twsi-none", NULL),
MPP_FUNCTION(0x01, "twsi-opt1", NULL),
MPP_FUNCTION(0x02, "twsi-opt2", NULL),
MPP_FUNCTION(0x03, "twsi-opt3", NULL)),
};
static struct pinctrl_gpio_range dove_mpp_gpio_ranges[] = {
MPP_GPIO_RANGE(0, 0, 0, 32),
MPP_GPIO_RANGE(1, 32, 32, 32),
MPP_GPIO_RANGE(2, 64, 64, 8),
};
static struct mvebu_pinctrl_soc_info dove_pinctrl_info = {
.controls = dove_mpp_controls,
.ncontrols = ARRAY_SIZE(dove_mpp_controls),
.modes = dove_mpp_modes,
.nmodes = ARRAY_SIZE(dove_mpp_modes),
.gpioranges = dove_mpp_gpio_ranges,
.ngpioranges = ARRAY_SIZE(dove_mpp_gpio_ranges),
.variant = 0,
};
static struct clk *clk;
static struct of_device_id dove_pinctrl_of_match[] = {
{ .compatible = "marvell,dove-pinctrl", .data = &dove_pinctrl_info },
{ }
};
static struct regmap_config gc_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = 5,
};
static int dove_pinctrl_probe(struct platform_device *pdev)
{
struct resource *res, *mpp_res;
struct resource fb_res;
const struct of_device_id *match =
of_match_device(dove_pinctrl_of_match, &pdev->dev);
pdev->dev.platform_data = (void *)match->data;
/*
* General MPP Configuration Register is part of pdma registers.
* grab clk to make sure it is ticking.
*/
clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Unable to get pdma clock");
return PTR_ERR(clk);
}
clk_prepare_enable(clk);
mpp_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mpp_base = devm_ioremap_resource(&pdev->dev, mpp_res);
if (IS_ERR(mpp_base))
return PTR_ERR(mpp_base);
/* prepare fallback resource */
memcpy(&fb_res, mpp_res, sizeof(struct resource));
fb_res.start = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_warn(&pdev->dev, "falling back to hardcoded MPP4 resource\n");
adjust_resource(&fb_res,
(mpp_res->start & INT_REGS_MASK) + MPP4_REGS_OFFS, 0x4);
res = &fb_res;
}
mpp4_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(mpp4_base))
return PTR_ERR(mpp4_base);
res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
if (!res) {
dev_warn(&pdev->dev, "falling back to hardcoded PMU resource\n");
adjust_resource(&fb_res,
(mpp_res->start & INT_REGS_MASK) + PMU_REGS_OFFS, 0x8);
res = &fb_res;
}
pmu_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(pmu_base))
return PTR_ERR(pmu_base);
gconfmap = syscon_regmap_lookup_by_compatible("marvell,dove-global-config");
if (IS_ERR(gconfmap)) {
void __iomem *gc_base;
dev_warn(&pdev->dev, "falling back to hardcoded global registers\n");
adjust_resource(&fb_res,
(mpp_res->start & INT_REGS_MASK) + GC_REGS_OFFS, 0x14);
gc_base = devm_ioremap_resource(&pdev->dev, &fb_res);
if (IS_ERR(gc_base))
return PTR_ERR(gc_base);
gconfmap = devm_regmap_init_mmio(&pdev->dev,
gc_base, &gc_regmap_config);
if (IS_ERR(gconfmap))
return PTR_ERR(gconfmap);
}
/* Warn on any missing DT resource */
if (fb_res.start)
dev_warn(&pdev->dev, FW_BUG "Missing pinctrl regs in DTB. Please update your firmware.\n");
return mvebu_pinctrl_probe(pdev);
}
static int dove_pinctrl_remove(struct platform_device *pdev)
{
int ret;
ret = mvebu_pinctrl_remove(pdev);
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
return ret;
}
static struct platform_driver dove_pinctrl_driver = {
.driver = {
.name = "dove-pinctrl",
.owner = THIS_MODULE,
.of_match_table = dove_pinctrl_of_match,
},
.probe = dove_pinctrl_probe,
.remove = dove_pinctrl_remove,
};
module_platform_driver(dove_pinctrl_driver);
MODULE_AUTHOR("Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>");
MODULE_DESCRIPTION("Marvell Dove pinctrl driver");
MODULE_LICENSE("GPL v2");
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