blob: 12eb79cb0cba417cf9bdcdfb1abefbbdd02c62b3 [file] [log] [blame]
/*
* Copyright (c) 2012 Samsung Electronics.
* Abhilash Kesavan <a.kesavan@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdtdec.h>
#include <asm/gpio.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/sromc.h>
static void exynos5_uart_config(int peripheral)
{
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
start = EXYNOS5_GPIO_A00;
count = 4;
break;
case PERIPH_ID_UART1:
start = EXYNOS5_GPIO_D00;
count = 4;
break;
case PERIPH_ID_UART2:
start = EXYNOS5_GPIO_A10;
count = 4;
break;
case PERIPH_ID_UART3:
start = EXYNOS5_GPIO_A14;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < start + count; i++) {
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
}
}
static void exynos5420_uart_config(int peripheral)
{
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
start = EXYNOS5420_GPIO_A00;
count = 4;
break;
case PERIPH_ID_UART1:
start = EXYNOS5420_GPIO_A04;
count = 4;
break;
case PERIPH_ID_UART2:
start = EXYNOS5420_GPIO_A10;
count = 4;
break;
case PERIPH_ID_UART3:
start = EXYNOS5420_GPIO_A14;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < start + count; i++) {
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
}
}
static int exynos5_mmc_config(int peripheral, int flags)
{
int i, start, start_ext, gpio_func = 0;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
start = EXYNOS5_GPIO_C00;
start_ext = EXYNOS5_GPIO_C10;
gpio_func = S5P_GPIO_FUNC(0x2);
break;
case PERIPH_ID_SDMMC1:
start = EXYNOS5_GPIO_C20;
start_ext = 0;
break;
case PERIPH_ID_SDMMC2:
start = EXYNOS5_GPIO_C30;
start_ext = EXYNOS5_GPIO_C43;
gpio_func = S5P_GPIO_FUNC(0x3);
break;
case PERIPH_ID_SDMMC3:
start = EXYNOS5_GPIO_C40;
start_ext = 0;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
if ((flags & PINMUX_FLAG_8BIT_MODE) && !start_ext) {
debug("SDMMC device %d does not support 8bit mode",
peripheral);
return -1;
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = start_ext; i <= (start_ext + 3); i++) {
gpio_cfg_pin(i, gpio_func);
gpio_set_pull(i, S5P_GPIO_PULL_UP);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
}
for (i = start; i < (start + 2); i++) {
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
for (i = (start + 3); i <= (start + 6); i++) {
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
gpio_set_pull(i, S5P_GPIO_PULL_UP);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
return 0;
}
static int exynos5420_mmc_config(int peripheral, int flags)
{
int i, start = 0, start_ext = 0;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
start = EXYNOS5420_GPIO_C00;
start_ext = EXYNOS5420_GPIO_C30;
break;
case PERIPH_ID_SDMMC1:
start = EXYNOS5420_GPIO_C10;
start_ext = EXYNOS5420_GPIO_D14;
break;
case PERIPH_ID_SDMMC2:
start = EXYNOS5420_GPIO_C20;
start_ext = 0;
break;
default:
start = 0;
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
if ((flags & PINMUX_FLAG_8BIT_MODE) && !start_ext) {
debug("SDMMC device %d does not support 8bit mode",
peripheral);
return -1;
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = start_ext; i <= (start_ext + 3); i++) {
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
gpio_set_pull(i, S5P_GPIO_PULL_UP);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
}
for (i = start; i < (start + 3); i++) {
/*
* MMC0 is intended to be used for eMMC. The
* card detect pin is used as a VDDEN signal to
* power on the eMMC. The 5420 iROM makes
* this same assumption.
*/
if ((peripheral == PERIPH_ID_SDMMC0) && (i == (start + 2))) {
#ifndef CONFIG_SPL_BUILD
gpio_request(i, "sdmmc0_vdden");
#endif
gpio_set_value(i, 1);
gpio_cfg_pin(i, S5P_GPIO_OUTPUT);
} else {
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
}
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
for (i = (start + 3); i <= (start + 6); i++) {
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
gpio_set_pull(i, S5P_GPIO_PULL_UP);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
return 0;
}
static void exynos5_sromc_config(int flags)
{
int i;
/*
* SROM:CS1 and EBI
*
* GPY0[0] SROM_CSn[0]
* GPY0[1] SROM_CSn[1](2)
* GPY0[2] SROM_CSn[2]
* GPY0[3] SROM_CSn[3]
* GPY0[4] EBI_OEn(2)
* GPY0[5] EBI_EEn(2)
*
* GPY1[0] EBI_BEn[0](2)
* GPY1[1] EBI_BEn[1](2)
* GPY1[2] SROM_WAIT(2)
* GPY1[3] EBI_DATA_RDn(2)
*/
gpio_cfg_pin(EXYNOS5_GPIO_Y00 + (flags & PINMUX_FLAG_BANK),
S5P_GPIO_FUNC(2));
gpio_cfg_pin(EXYNOS5_GPIO_Y04, S5P_GPIO_FUNC(2));
gpio_cfg_pin(EXYNOS5_GPIO_Y05, S5P_GPIO_FUNC(2));
for (i = 0; i < 4; i++)
gpio_cfg_pin(EXYNOS5_GPIO_Y10 + i, S5P_GPIO_FUNC(2));
/*
* EBI: 8 Addrss Lines
*
* GPY3[0] EBI_ADDR[0](2)
* GPY3[1] EBI_ADDR[1](2)
* GPY3[2] EBI_ADDR[2](2)
* GPY3[3] EBI_ADDR[3](2)
* GPY3[4] EBI_ADDR[4](2)
* GPY3[5] EBI_ADDR[5](2)
* GPY3[6] EBI_ADDR[6](2)
* GPY3[7] EBI_ADDR[7](2)
*
* EBI: 16 Data Lines
*
* GPY5[0] EBI_DATA[0](2)
* GPY5[1] EBI_DATA[1](2)
* GPY5[2] EBI_DATA[2](2)
* GPY5[3] EBI_DATA[3](2)
* GPY5[4] EBI_DATA[4](2)
* GPY5[5] EBI_DATA[5](2)
* GPY5[6] EBI_DATA[6](2)
* GPY5[7] EBI_DATA[7](2)
*
* GPY6[0] EBI_DATA[8](2)
* GPY6[1] EBI_DATA[9](2)
* GPY6[2] EBI_DATA[10](2)
* GPY6[3] EBI_DATA[11](2)
* GPY6[4] EBI_DATA[12](2)
* GPY6[5] EBI_DATA[13](2)
* GPY6[6] EBI_DATA[14](2)
* GPY6[7] EBI_DATA[15](2)
*/
for (i = 0; i < 8; i++) {
gpio_cfg_pin(EXYNOS5_GPIO_Y30 + i, S5P_GPIO_FUNC(2));
gpio_set_pull(EXYNOS5_GPIO_Y30 + i, S5P_GPIO_PULL_UP);
gpio_cfg_pin(EXYNOS5_GPIO_Y50 + i, S5P_GPIO_FUNC(2));
gpio_set_pull(EXYNOS5_GPIO_Y50 + i, S5P_GPIO_PULL_UP);
gpio_cfg_pin(EXYNOS5_GPIO_Y60 + i, S5P_GPIO_FUNC(2));
gpio_set_pull(EXYNOS5_GPIO_Y60 + i, S5P_GPIO_PULL_UP);
}
}
static void exynos5_i2c_config(int peripheral, int flags)
{
int func01, func23;
/* High-Speed I2C */
if (flags & PINMUX_FLAG_HS_MODE) {
func01 = 4;
func23 = 4;
} else {
func01 = 2;
func23 = 3;
}
switch (peripheral) {
case PERIPH_ID_I2C0:
gpio_cfg_pin(EXYNOS5_GPIO_B30, S5P_GPIO_FUNC(func01));
gpio_cfg_pin(EXYNOS5_GPIO_B31, S5P_GPIO_FUNC(func01));
break;
case PERIPH_ID_I2C1:
gpio_cfg_pin(EXYNOS5_GPIO_B32, S5P_GPIO_FUNC(func01));
gpio_cfg_pin(EXYNOS5_GPIO_B33, S5P_GPIO_FUNC(func01));
break;
case PERIPH_ID_I2C2:
gpio_cfg_pin(EXYNOS5_GPIO_A06, S5P_GPIO_FUNC(func23));
gpio_cfg_pin(EXYNOS5_GPIO_A07, S5P_GPIO_FUNC(func23));
break;
case PERIPH_ID_I2C3:
gpio_cfg_pin(EXYNOS5_GPIO_A12, S5P_GPIO_FUNC(func23));
gpio_cfg_pin(EXYNOS5_GPIO_A13, S5P_GPIO_FUNC(func23));
break;
case PERIPH_ID_I2C4:
gpio_cfg_pin(EXYNOS5_GPIO_A20, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_A21, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
gpio_cfg_pin(EXYNOS5_GPIO_A22, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_A23, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
gpio_cfg_pin(EXYNOS5_GPIO_B13, S5P_GPIO_FUNC(0x4));
gpio_cfg_pin(EXYNOS5_GPIO_B14, S5P_GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
gpio_cfg_pin(EXYNOS5_GPIO_B22, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_B23, S5P_GPIO_FUNC(0x3));
break;
}
}
static void exynos5420_i2c_config(int peripheral)
{
switch (peripheral) {
case PERIPH_ID_I2C0:
gpio_cfg_pin(EXYNOS5420_GPIO_B30, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5420_GPIO_B31, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C1:
gpio_cfg_pin(EXYNOS5420_GPIO_B32, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5420_GPIO_B33, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C2:
gpio_cfg_pin(EXYNOS5420_GPIO_A06, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5420_GPIO_A07, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C3:
gpio_cfg_pin(EXYNOS5420_GPIO_A12, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5420_GPIO_A13, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C4:
gpio_cfg_pin(EXYNOS5420_GPIO_A20, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5420_GPIO_A21, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
gpio_cfg_pin(EXYNOS5420_GPIO_A22, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5420_GPIO_A23, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
gpio_cfg_pin(EXYNOS5420_GPIO_B13, S5P_GPIO_FUNC(0x4));
gpio_cfg_pin(EXYNOS5420_GPIO_B14, S5P_GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
gpio_cfg_pin(EXYNOS5420_GPIO_B22, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5420_GPIO_B23, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C8:
gpio_cfg_pin(EXYNOS5420_GPIO_B34, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5420_GPIO_B35, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C9:
gpio_cfg_pin(EXYNOS5420_GPIO_B36, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5420_GPIO_B37, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C10:
gpio_cfg_pin(EXYNOS5420_GPIO_B40, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5420_GPIO_B41, S5P_GPIO_FUNC(0x2));
break;
}
}
static void exynos5_i2s_config(int peripheral)
{
int i;
switch (peripheral) {
case PERIPH_ID_I2S0:
for (i = 0; i < 5; i++)
gpio_cfg_pin(EXYNOS5_GPIO_Z0 + i, S5P_GPIO_FUNC(0x02));
break;
case PERIPH_ID_I2S1:
for (i = 0; i < 5; i++)
gpio_cfg_pin(EXYNOS5_GPIO_B00 + i, S5P_GPIO_FUNC(0x02));
break;
}
}
void exynos5_spi_config(int peripheral)
{
int cfg = 0, pin = 0, i;
switch (peripheral) {
case PERIPH_ID_SPI0:
cfg = S5P_GPIO_FUNC(0x2);
pin = EXYNOS5_GPIO_A20;
break;
case PERIPH_ID_SPI1:
cfg = S5P_GPIO_FUNC(0x2);
pin = EXYNOS5_GPIO_A24;
break;
case PERIPH_ID_SPI2:
cfg = S5P_GPIO_FUNC(0x5);
pin = EXYNOS5_GPIO_B11;
break;
case PERIPH_ID_SPI3:
cfg = S5P_GPIO_FUNC(0x2);
pin = EXYNOS5_GPIO_F10;
break;
case PERIPH_ID_SPI4:
for (i = 0; i < 2; i++) {
gpio_cfg_pin(EXYNOS5_GPIO_F02 + i, S5P_GPIO_FUNC(0x4));
gpio_cfg_pin(EXYNOS5_GPIO_E04 + i, S5P_GPIO_FUNC(0x4));
}
break;
}
if (peripheral != PERIPH_ID_SPI4) {
for (i = pin; i < pin + 4; i++)
gpio_cfg_pin(i, cfg);
}
}
void exynos5420_spi_config(int peripheral)
{
int cfg, pin, i;
switch (peripheral) {
case PERIPH_ID_SPI0:
pin = EXYNOS5420_GPIO_A20;
cfg = S5P_GPIO_FUNC(0x2);
break;
case PERIPH_ID_SPI1:
pin = EXYNOS5420_GPIO_A24;
cfg = S5P_GPIO_FUNC(0x2);
break;
case PERIPH_ID_SPI2:
pin = EXYNOS5420_GPIO_B11;
cfg = S5P_GPIO_FUNC(0x5);
break;
case PERIPH_ID_SPI3:
pin = EXYNOS5420_GPIO_F10;
cfg = S5P_GPIO_FUNC(0x2);
break;
case PERIPH_ID_SPI4:
cfg = 0;
pin = 0;
break;
default:
cfg = 0;
pin = 0;
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
if (peripheral != PERIPH_ID_SPI4) {
for (i = pin; i < pin + 4; i++)
gpio_cfg_pin(i, cfg);
} else {
for (i = 0; i < 2; i++) {
gpio_cfg_pin(EXYNOS5420_GPIO_F02 + i,
S5P_GPIO_FUNC(0x4));
gpio_cfg_pin(EXYNOS5420_GPIO_E04 + i,
S5P_GPIO_FUNC(0x4));
}
}
}
static int exynos5_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
exynos5_uart_config(peripheral);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC1:
case PERIPH_ID_SDMMC2:
case PERIPH_ID_SDMMC3:
return exynos5_mmc_config(peripheral, flags);
case PERIPH_ID_SROMC:
exynos5_sromc_config(flags);
break;
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
case PERIPH_ID_I2C2:
case PERIPH_ID_I2C3:
case PERIPH_ID_I2C4:
case PERIPH_ID_I2C5:
case PERIPH_ID_I2C6:
case PERIPH_ID_I2C7:
exynos5_i2c_config(peripheral, flags);
break;
case PERIPH_ID_I2S0:
case PERIPH_ID_I2S1:
exynos5_i2s_config(peripheral);
break;
case PERIPH_ID_SPI0:
case PERIPH_ID_SPI1:
case PERIPH_ID_SPI2:
case PERIPH_ID_SPI3:
case PERIPH_ID_SPI4:
exynos5_spi_config(peripheral);
break;
case PERIPH_ID_DPHPD:
/* Set Hotplug detect for DP */
gpio_cfg_pin(EXYNOS5_GPIO_X07, S5P_GPIO_FUNC(0x3));
/*
* Hotplug detect should have an external pullup; disable the
* internal pulldown so they don't fight.
*/
gpio_set_pull(EXYNOS5_GPIO_X07, S5P_GPIO_PULL_NONE);
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
return 0;
}
static int exynos5420_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
exynos5420_uart_config(peripheral);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC1:
case PERIPH_ID_SDMMC2:
case PERIPH_ID_SDMMC3:
return exynos5420_mmc_config(peripheral, flags);
case PERIPH_ID_SPI0:
case PERIPH_ID_SPI1:
case PERIPH_ID_SPI2:
case PERIPH_ID_SPI3:
case PERIPH_ID_SPI4:
exynos5420_spi_config(peripheral);
break;
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
case PERIPH_ID_I2C2:
case PERIPH_ID_I2C3:
case PERIPH_ID_I2C4:
case PERIPH_ID_I2C5:
case PERIPH_ID_I2C6:
case PERIPH_ID_I2C7:
case PERIPH_ID_I2C8:
case PERIPH_ID_I2C9:
case PERIPH_ID_I2C10:
exynos5420_i2c_config(peripheral);
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
return 0;
}
static void exynos4_i2c_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_I2C0:
gpio_cfg_pin(EXYNOS4_GPIO_D10, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS4_GPIO_D11, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C1:
gpio_cfg_pin(EXYNOS4_GPIO_D12, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS4_GPIO_D13, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C2:
gpio_cfg_pin(EXYNOS4_GPIO_A06, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4_GPIO_A07, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C3:
gpio_cfg_pin(EXYNOS4_GPIO_A12, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4_GPIO_A13, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C4:
gpio_cfg_pin(EXYNOS4_GPIO_B2, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4_GPIO_B3, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
gpio_cfg_pin(EXYNOS4_GPIO_B6, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4_GPIO_B7, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
gpio_cfg_pin(EXYNOS4_GPIO_C13, S5P_GPIO_FUNC(0x4));
gpio_cfg_pin(EXYNOS4_GPIO_C14, S5P_GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
gpio_cfg_pin(EXYNOS4_GPIO_D02, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4_GPIO_D03, S5P_GPIO_FUNC(0x3));
break;
}
}
static int exynos4_mmc_config(int peripheral, int flags)
{
int i, start = 0, start_ext = 0;
unsigned int func, ext_func;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
start = EXYNOS4_GPIO_K00;
start_ext = EXYNOS4_GPIO_K13;
func = S5P_GPIO_FUNC(0x2);
ext_func = S5P_GPIO_FUNC(0x3);
break;
case PERIPH_ID_SDMMC2:
start = EXYNOS4_GPIO_K20;
start_ext = EXYNOS4_GPIO_K33;
func = S5P_GPIO_FUNC(0x2);
ext_func = S5P_GPIO_FUNC(0x3);
break;
case PERIPH_ID_SDMMC4:
start = EXYNOS4_GPIO_K00;
start_ext = EXYNOS4_GPIO_K13;
func = S5P_GPIO_FUNC(0x3);
ext_func = S5P_GPIO_FUNC(0x4);
break;
default:
return -1;
}
for (i = start; i < (start + 7); i++) {
if (i == (start + 2))
continue;
gpio_cfg_pin(i, func);
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
/* SDMMC2 do not use 8bit mode at exynos4 */
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = start_ext; i < (start_ext + 4); i++) {
gpio_cfg_pin(i, ext_func);
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
}
return 0;
}
static void exynos4_uart_config(int peripheral)
{
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
start = EXYNOS4_GPIO_A00;
count = 4;
break;
case PERIPH_ID_UART1:
start = EXYNOS4_GPIO_A04;
count = 4;
break;
case PERIPH_ID_UART2:
start = EXYNOS4_GPIO_A10;
count = 4;
break;
case PERIPH_ID_UART3:
start = EXYNOS4_GPIO_A14;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < (start + count); i++) {
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
}
}
static void exynos4x12_i2c_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_I2C0:
gpio_cfg_pin(EXYNOS4X12_GPIO_D10, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS4X12_GPIO_D11, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C1:
gpio_cfg_pin(EXYNOS4X12_GPIO_D12, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS4X12_GPIO_D13, S5P_GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C2:
gpio_cfg_pin(EXYNOS4X12_GPIO_A06, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4X12_GPIO_A07, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C3:
gpio_cfg_pin(EXYNOS4X12_GPIO_A12, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4X12_GPIO_A13, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C4:
gpio_cfg_pin(EXYNOS4X12_GPIO_B2, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4X12_GPIO_B3, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
gpio_cfg_pin(EXYNOS4X12_GPIO_B6, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4X12_GPIO_B7, S5P_GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
gpio_cfg_pin(EXYNOS4X12_GPIO_C13, S5P_GPIO_FUNC(0x4));
gpio_cfg_pin(EXYNOS4X12_GPIO_C14, S5P_GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
gpio_cfg_pin(EXYNOS4X12_GPIO_D02, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS4X12_GPIO_D03, S5P_GPIO_FUNC(0x3));
break;
}
}
static int exynos4x12_mmc_config(int peripheral, int flags)
{
int i, start = 0, start_ext = 0;
unsigned int func, ext_func;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
start = EXYNOS4X12_GPIO_K00;
start_ext = EXYNOS4X12_GPIO_K13;
func = S5P_GPIO_FUNC(0x2);
ext_func = S5P_GPIO_FUNC(0x3);
break;
case PERIPH_ID_SDMMC2:
start = EXYNOS4X12_GPIO_K20;
start_ext = EXYNOS4X12_GPIO_K33;
func = S5P_GPIO_FUNC(0x2);
ext_func = S5P_GPIO_FUNC(0x3);
break;
case PERIPH_ID_SDMMC4:
start = EXYNOS4X12_GPIO_K00;
start_ext = EXYNOS4X12_GPIO_K13;
func = S5P_GPIO_FUNC(0x3);
ext_func = S5P_GPIO_FUNC(0x4);
break;
default:
return -1;
}
for (i = start; i < (start + 7); i++) {
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
if (i == (start + 2))
continue;
gpio_cfg_pin(i, func);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = start_ext; i < (start_ext + 4); i++) {
gpio_cfg_pin(i, ext_func);
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_set_drv(i, S5P_GPIO_DRV_4X);
}
}
return 0;
}
static void exynos4x12_uart_config(int peripheral)
{
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
start = EXYNOS4X12_GPIO_A00;
count = 4;
break;
case PERIPH_ID_UART1:
start = EXYNOS4X12_GPIO_A04;
count = 4;
break;
case PERIPH_ID_UART2:
start = EXYNOS4X12_GPIO_A10;
count = 4;
break;
case PERIPH_ID_UART3:
start = EXYNOS4X12_GPIO_A14;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < (start + count); i++) {
gpio_set_pull(i, S5P_GPIO_PULL_NONE);
gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));
}
}
static int exynos4_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
exynos4_uart_config(peripheral);
break;
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
case PERIPH_ID_I2C2:
case PERIPH_ID_I2C3:
case PERIPH_ID_I2C4:
case PERIPH_ID_I2C5:
case PERIPH_ID_I2C6:
case PERIPH_ID_I2C7:
exynos4_i2c_config(peripheral, flags);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC2:
case PERIPH_ID_SDMMC4:
return exynos4_mmc_config(peripheral, flags);
case PERIPH_ID_SDMMC1:
case PERIPH_ID_SDMMC3:
debug("SDMMC device %d not implemented\n", peripheral);
return -1;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
return 0;
}
static int exynos4x12_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
exynos4x12_uart_config(peripheral);
break;
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
case PERIPH_ID_I2C2:
case PERIPH_ID_I2C3:
case PERIPH_ID_I2C4:
case PERIPH_ID_I2C5:
case PERIPH_ID_I2C6:
case PERIPH_ID_I2C7:
exynos4x12_i2c_config(peripheral, flags);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC2:
case PERIPH_ID_SDMMC4:
return exynos4x12_mmc_config(peripheral, flags);
case PERIPH_ID_SDMMC1:
case PERIPH_ID_SDMMC3:
debug("SDMMC device %d not implemented\n", peripheral);
return -1;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
return 0;
}
int exynos_pinmux_config(int peripheral, int flags)
{
if (cpu_is_exynos5()) {
if (proid_is_exynos5420() || proid_is_exynos5422())
return exynos5420_pinmux_config(peripheral, flags);
else if (proid_is_exynos5250())
return exynos5_pinmux_config(peripheral, flags);
} else if (cpu_is_exynos4()) {
if (proid_is_exynos4412())
return exynos4x12_pinmux_config(peripheral, flags);
else
return exynos4_pinmux_config(peripheral, flags);
}
debug("pinmux functionality not supported\n");
return -1;
}
#if CONFIG_IS_ENABLED(OF_CONTROL)
static int exynos4_pinmux_decode_periph_id(const void *blob, int node)
{
int err;
u32 cell[3];
err = fdtdec_get_int_array(blob, node, "interrupts", cell,
ARRAY_SIZE(cell));
if (err) {
debug(" invalid peripheral id\n");
return PERIPH_ID_NONE;
}
return cell[1];
}
static int exynos5_pinmux_decode_periph_id(const void *blob, int node)
{
int err;
u32 cell[3];
err = fdtdec_get_int_array(blob, node, "interrupts", cell,
ARRAY_SIZE(cell));
if (err)
return PERIPH_ID_NONE;
return cell[1];
}
int pinmux_decode_periph_id(const void *blob, int node)
{
if (cpu_is_exynos5())
return exynos5_pinmux_decode_periph_id(blob, node);
else if (cpu_is_exynos4())
return exynos4_pinmux_decode_periph_id(blob, node);
return PERIPH_ID_NONE;
}
#endif