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u-boot/arch/arm/cpu/armv7/exynos/pinmux.c
Marek Vasut 47c9c76b8a arm: exynos: Squash bogus warnings in pinmux 
Squash these warnings in pinmux.c found with GCC 4.8:

/arch/arm/cpu/armv7/exynos/pinmux.c: In function 'exynos_pinmux_config':
/arch/arm/cpu/armv7/exynos/pinmux.c:687:28: warning: 'count' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for (i = start; i < start + count; i++) {
                            ^
/arch/arm/cpu/armv7/exynos/pinmux.c:663:16: note: 'count' was declared here
  int i, start, count;
                ^
/arch/arm/cpu/armv7/exynos/pinmux.c:687:28: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for (i = start; i < start + count; i++) {
                            ^
/arch/arm/cpu/armv7/exynos/pinmux.c:663:9: note: 'start' was declared here
  int i, start, count;
         ^
/arch/arm/cpu/armv7/exynos/pinmux.c:689:19: warning: 'bank' may be used uninitialized in this function [-Wmaybe-uninitialized]
   s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
                   ^
/arch/arm/cpu/armv7/exynos/pinmux.c:662:24: note: 'bank' was declared here
  struct s5p_gpio_bank *bank;
                        ^
/arch/arm/cpu/armv7/exynos/pinmux.c: In function 'exynos_pinmux_config':
/arch/arm/cpu/armv7/exynos/pinmux.c:687:28: warning: 'count' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for (i = start; i < start + count; i++) {
                            ^
/arch/arm/cpu/armv7/exynos/pinmux.c:663:16: note: 'count' was declared here
  int i, start, count;
                ^
/arch/arm/cpu/armv7/exynos/pinmux.c:687:28: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for (i = start; i < start + count; i++) {
                            ^
/arch/arm/cpu/armv7/exynos/pinmux.c:663:9: note: 'start' was declared here
  int i, start, count;
         ^
/arch/arm/cpu/armv7/exynos/pinmux.c:689:19: warning: 'bank' may be used uninitialized in this function [-Wmaybe-uninitialized]
   s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
                   ^
/arch/arm/cpu/armv7/exynos/pinmux.c:662:24: note: 'bank' was declared here
  struct s5p_gpio_bank *bank;
                        ^

Note that the warning is bogus, the function can never be called with invalid
'peripheral' argument. GCC just cannot analyze this.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Cc: Akshay Saraswat <akshay.s@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-03-13 09:46:57 +09:00

793 lines
18 KiB
C
Raw Blame History

/*
* 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/arch/gpio.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/sromc.h>
static void exynos5_uart_config(int peripheral)
{
struct exynos5_gpio_part1 *gpio1 =
(struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
struct s5p_gpio_bank *bank;
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
bank = &gpio1->a0;
start = 0;
count = 4;
break;
case PERIPH_ID_UART1:
bank = &gpio1->d0;
start = 0;
count = 4;
break;
case PERIPH_ID_UART2:
bank = &gpio1->a1;
start = 0;
count = 4;
break;
case PERIPH_ID_UART3:
bank = &gpio1->a1;
start = 4;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < start + count; i++) {
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
}
}
static void exynos5420_uart_config(int peripheral)
{
struct exynos5420_gpio_part1 *gpio1 =
(struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
struct s5p_gpio_bank *bank;
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
bank = &gpio1->a0;
start = 0;
count = 4;
break;
case PERIPH_ID_UART1:
bank = &gpio1->a0;
start = 4;
count = 4;
break;
case PERIPH_ID_UART2:
bank = &gpio1->a1;
start = 0;
count = 4;
break;
case PERIPH_ID_UART3:
bank = &gpio1->a1;
start = 4;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < start + count; i++) {
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
}
}
static int exynos5_mmc_config(int peripheral, int flags)
{
struct exynos5_gpio_part1 *gpio1 =
(struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
struct s5p_gpio_bank *bank, *bank_ext;
int i, start = 0, gpio_func = 0;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
bank = &gpio1->c0;
bank_ext = &gpio1->c1;
start = 0;
gpio_func = GPIO_FUNC(0x2);
break;
case PERIPH_ID_SDMMC1:
bank = &gpio1->c2;
bank_ext = NULL;
break;
case PERIPH_ID_SDMMC2:
bank = &gpio1->c3;
bank_ext = &gpio1->c4;
start = 3;
gpio_func = GPIO_FUNC(0x3);
break;
case PERIPH_ID_SDMMC3:
bank = &gpio1->c4;
bank_ext = NULL;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
if ((flags & PINMUX_FLAG_8BIT_MODE) && !bank_ext) {
debug("SDMMC device %d does not support 8bit mode",
peripheral);
return -1;
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = start; i <= (start + 3); i++) {
s5p_gpio_cfg_pin(bank_ext, i, gpio_func);
s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_UP);
s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
}
}
for (i = 0; i < 2; i++) {
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
for (i = 3; i <= 6; i++) {
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
return 0;
}
static int exynos5420_mmc_config(int peripheral, int flags)
{
struct exynos5420_gpio_part3 *gpio3 =
(struct exynos5420_gpio_part3 *)samsung_get_base_gpio_part3();
struct s5p_gpio_bank *bank = NULL, *bank_ext = NULL;
int i, start;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
bank = &gpio3->c0;
bank_ext = &gpio3->c3;
start = 0;
break;
case PERIPH_ID_SDMMC1:
bank = &gpio3->c1;
bank_ext = &gpio3->d1;
start = 4;
break;
case PERIPH_ID_SDMMC2:
bank = &gpio3->c2;
bank_ext = NULL;
start = 0;
break;
default:
start = 0;
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
}
if ((flags & PINMUX_FLAG_8BIT_MODE) && !bank_ext) {
debug("SDMMC device %d does not support 8bit mode",
peripheral);
return -1;
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = start; i <= (start + 3); i++) {
s5p_gpio_cfg_pin(bank_ext, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_UP);
s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
}
}
for (i = 0; i < 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 == 2)) {
s5p_gpio_set_value(bank, i, 1);
s5p_gpio_cfg_pin(bank, i, GPIO_OUTPUT);
} else {
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
}
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
for (i = 3; i <= 6; i++) {
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
return 0;
}
static void exynos5_sromc_config(int flags)
{
struct exynos5_gpio_part1 *gpio1 =
(struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
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)
*/
s5p_gpio_cfg_pin(&gpio1->y0, (flags & PINMUX_FLAG_BANK),
GPIO_FUNC(2));
s5p_gpio_cfg_pin(&gpio1->y0, 4, GPIO_FUNC(2));
s5p_gpio_cfg_pin(&gpio1->y0, 5, GPIO_FUNC(2));
for (i = 0; i < 4; i++)
s5p_gpio_cfg_pin(&gpio1->y1, i, 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++) {
s5p_gpio_cfg_pin(&gpio1->y3, i, GPIO_FUNC(2));
s5p_gpio_set_pull(&gpio1->y3, i, GPIO_PULL_UP);
s5p_gpio_cfg_pin(&gpio1->y5, i, GPIO_FUNC(2));
s5p_gpio_set_pull(&gpio1->y5, i, GPIO_PULL_UP);
s5p_gpio_cfg_pin(&gpio1->y6, i, GPIO_FUNC(2));
s5p_gpio_set_pull(&gpio1->y6, i, GPIO_PULL_UP);
}
}
static void exynos5_i2c_config(int peripheral, int flags)
{
struct exynos5_gpio_part1 *gpio1 =
(struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
switch (peripheral) {
case PERIPH_ID_I2C0:
s5p_gpio_cfg_pin(&gpio1->b3, 0, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b3, 1, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C1:
s5p_gpio_cfg_pin(&gpio1->b3, 2, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b3, 3, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C2:
s5p_gpio_cfg_pin(&gpio1->a0, 6, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a0, 7, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C3:
s5p_gpio_cfg_pin(&gpio1->a1, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a1, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C4:
s5p_gpio_cfg_pin(&gpio1->a2, 0, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a2, 1, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
s5p_gpio_cfg_pin(&gpio1->a2, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a2, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
s5p_gpio_cfg_pin(&gpio1->b1, 3, GPIO_FUNC(0x4));
s5p_gpio_cfg_pin(&gpio1->b1, 4, GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
s5p_gpio_cfg_pin(&gpio1->b2, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->b2, 3, GPIO_FUNC(0x3));
break;
}
}
static void exynos5420_i2c_config(int peripheral)
{
struct exynos5420_gpio_part1 *gpio1 =
(struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
switch (peripheral) {
case PERIPH_ID_I2C0:
s5p_gpio_cfg_pin(&gpio1->b3, 0, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b3, 1, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C1:
s5p_gpio_cfg_pin(&gpio1->b3, 2, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b3, 3, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C2:
s5p_gpio_cfg_pin(&gpio1->a0, 6, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a0, 7, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C3:
s5p_gpio_cfg_pin(&gpio1->a1, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a1, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C4:
s5p_gpio_cfg_pin(&gpio1->a2, 0, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a2, 1, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
s5p_gpio_cfg_pin(&gpio1->a2, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a2, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
s5p_gpio_cfg_pin(&gpio1->b1, 3, GPIO_FUNC(0x4));
s5p_gpio_cfg_pin(&gpio1->b1, 4, GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
s5p_gpio_cfg_pin(&gpio1->b2, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->b2, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C8:
s5p_gpio_cfg_pin(&gpio1->b3, 4, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b3, 5, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C9:
s5p_gpio_cfg_pin(&gpio1->b3, 6, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b3, 7, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C10:
s5p_gpio_cfg_pin(&gpio1->b4, 0, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->b4, 1, GPIO_FUNC(0x2));
break;
}
}
static void exynos5_i2s_config(int peripheral)
{
int i;
struct exynos5_gpio_part1 *gpio1 =
(struct exynos5_gpio_part1 *)samsung_get_base_gpio_part1();
struct exynos5_gpio_part4 *gpio4 =
(struct exynos5_gpio_part4 *)samsung_get_base_gpio_part4();
switch (peripheral) {
case PERIPH_ID_I2S0:
for (i = 0; i < 5; i++)
s5p_gpio_cfg_pin(&gpio4->z, i, GPIO_FUNC(0x02));
break;
case PERIPH_ID_I2S1:
for (i = 0; i < 5; i++)
s5p_gpio_cfg_pin(&gpio1->b0, i, GPIO_FUNC(0x02));
break;
}
}
void exynos5_spi_config(int peripheral)
{
int cfg = 0, pin = 0, i;
struct s5p_gpio_bank *bank = NULL;
struct exynos5_gpio_part1 *gpio1 =
(struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
struct exynos5_gpio_part2 *gpio2 =
(struct exynos5_gpio_part2 *) samsung_get_base_gpio_part2();
switch (peripheral) {
case PERIPH_ID_SPI0:
bank = &gpio1->a2;
cfg = GPIO_FUNC(0x2);
pin = 0;
break;
case PERIPH_ID_SPI1:
bank = &gpio1->a2;
cfg = GPIO_FUNC(0x2);
pin = 4;
break;
case PERIPH_ID_SPI2:
bank = &gpio1->b1;
cfg = GPIO_FUNC(0x5);
pin = 1;
break;
case PERIPH_ID_SPI3:
bank = &gpio2->f1;
cfg = GPIO_FUNC(0x2);
pin = 0;
break;
case PERIPH_ID_SPI4:
for (i = 0; i < 2; i++) {
s5p_gpio_cfg_pin(&gpio2->f0, i + 2, GPIO_FUNC(0x4));
s5p_gpio_cfg_pin(&gpio2->e0, i + 4, GPIO_FUNC(0x4));
}
break;
}
if (peripheral != PERIPH_ID_SPI4) {
for (i = pin; i < pin + 4; i++)
s5p_gpio_cfg_pin(bank, i, cfg);
}
}
void exynos5420_spi_config(int peripheral)
{
int cfg, pin, i;
struct s5p_gpio_bank *bank = NULL;
struct exynos5420_gpio_part1 *gpio1 =
(struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
struct exynos5420_gpio_part4 *gpio4 =
(struct exynos5420_gpio_part4 *)samsung_get_base_gpio_part4();
switch (peripheral) {
case PERIPH_ID_SPI0:
bank = &gpio1->a2;
cfg = GPIO_FUNC(0x2);
pin = 0;
break;
case PERIPH_ID_SPI1:
bank = &gpio1->a2;
cfg = GPIO_FUNC(0x2);
pin = 4;
break;
case PERIPH_ID_SPI2:
bank = &gpio1->b1;
cfg = GPIO_FUNC(0x5);
pin = 1;
break;
case PERIPH_ID_SPI3:
bank = &gpio4->f1;
cfg = GPIO_FUNC(0x2);
pin = 0;
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++)
s5p_gpio_cfg_pin(bank, i, cfg);
} else {
for (i = 0; i < 2; i++) {
s5p_gpio_cfg_pin(&gpio4->f0, i + 2, GPIO_FUNC(0x4));
s5p_gpio_cfg_pin(&gpio4->e0, i + 4, 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;
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)
{
struct exynos4_gpio_part1 *gpio1 =
(struct exynos4_gpio_part1 *) samsung_get_base_gpio_part1();
switch (peripheral) {
case PERIPH_ID_I2C0:
s5p_gpio_cfg_pin(&gpio1->d1, 0, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->d1, 1, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C1:
s5p_gpio_cfg_pin(&gpio1->d1, 2, GPIO_FUNC(0x2));
s5p_gpio_cfg_pin(&gpio1->d1, 3, GPIO_FUNC(0x2));
break;
case PERIPH_ID_I2C2:
s5p_gpio_cfg_pin(&gpio1->a0, 6, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a0, 7, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C3:
s5p_gpio_cfg_pin(&gpio1->a1, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->a1, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C4:
s5p_gpio_cfg_pin(&gpio1->b, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->b, 3, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C5:
s5p_gpio_cfg_pin(&gpio1->b, 6, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->b, 7, GPIO_FUNC(0x3));
break;
case PERIPH_ID_I2C6:
s5p_gpio_cfg_pin(&gpio1->c1, 3, GPIO_FUNC(0x4));
s5p_gpio_cfg_pin(&gpio1->c1, 4, GPIO_FUNC(0x4));
break;
case PERIPH_ID_I2C7:
s5p_gpio_cfg_pin(&gpio1->d0, 2, GPIO_FUNC(0x3));
s5p_gpio_cfg_pin(&gpio1->d0, 3, GPIO_FUNC(0x3));
break;
}
}
static int exynos4_mmc_config(int peripheral, int flags)
{
struct exynos4_gpio_part2 *gpio2 =
(struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
struct s5p_gpio_bank *bank, *bank_ext;
int i;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
bank = &gpio2->k0;
bank_ext = &gpio2->k1;
break;
case PERIPH_ID_SDMMC2:
bank = &gpio2->k2;
bank_ext = &gpio2->k3;
break;
default:
return -1;
}
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = 3; i < 7; i++) {
s5p_gpio_cfg_pin(bank_ext, i, GPIO_FUNC(0x3));
s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
}
}
return 0;
}
static void exynos4_uart_config(int peripheral)
{
struct exynos4_gpio_part1 *gpio1 =
(struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1();
struct s5p_gpio_bank *bank;
int i, start, count;
switch (peripheral) {
case PERIPH_ID_UART0:
bank = &gpio1->a0;
start = 0;
count = 4;
break;
case PERIPH_ID_UART1:
bank = &gpio1->a0;
start = 4;
count = 4;
break;
case PERIPH_ID_UART2:
bank = &gpio1->a1;
start = 0;
count = 4;
break;
case PERIPH_ID_UART3:
bank = &gpio1->a1;
start = 4;
count = 2;
break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return;
}
for (i = start; i < start + count; i++) {
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_cfg_pin(bank, i, 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:
return exynos4_mmc_config(peripheral, flags);
case PERIPH_ID_SDMMC1:
case PERIPH_ID_SDMMC3:
case PERIPH_ID_SDMMC4:
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())
return exynos5420_pinmux_config(peripheral, flags);
else if (proid_is_exynos5250())
return exynos5_pinmux_config(peripheral, flags);
} else if (cpu_is_exynos4()) {
return exynos4_pinmux_config(peripheral, flags);
} else {
debug("pinmux functionality not supported\n");
}
return -1;
}
#ifdef CONFIG_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);
else
return PERIPH_ID_NONE;
}
#endif
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