diff options
Diffstat (limited to 'arch/arm/mach-exynos/pinmux.c')
| -rw-r--r-- | arch/arm/mach-exynos/pinmux.c | 915 |
1 files changed, 915 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/pinmux.c b/arch/arm/mach-exynos/pinmux.c new file mode 100644 index 0000000..e97cb37 --- /dev/null +++ b/arch/arm/mach-exynos/pinmux.c @@ -0,0 +1,915 @@ +/* + * 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++) { + 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); + } + 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_exynos5800()) + 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; +} + +#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); + + return PERIPH_ID_NONE; +} +#endif |