Gabe Black (gabeblack@chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3674
-gerrit
commit 469f54e48c54c70d28a564df7c620de2b775fe03 Author: Gabe Black gabeblack@google.com Date: Sat Jun 15 23:40:26 2013 -0700
exynos5420: Implement support for the pinmux as functions.
Change-Id: I5e0ec360597cd95cb6510fb32b04d8931e6a33db Signed-off-by: Gabe Black gabeblack@chromium.org --- src/cpu/samsung/exynos5420/clock.c | 1 + src/cpu/samsung/exynos5420/i2c.c | 1 - src/cpu/samsung/exynos5420/pinmux.c | 434 ++++++++++++++--------------------- src/cpu/samsung/exynos5420/pinmux.h | 60 +++-- src/cpu/samsung/exynos5420/uart.c | 3 +- src/mainboard/google/pit/mainboard.c | 2 +- src/mainboard/google/pit/romstage.c | 7 +- 7 files changed, 206 insertions(+), 302 deletions(-)
diff --git a/src/cpu/samsung/exynos5420/clock.c b/src/cpu/samsung/exynos5420/clock.c index 6e4701a..1df4aba 100644 --- a/src/cpu/samsung/exynos5420/clock.c +++ b/src/cpu/samsung/exynos5420/clock.c @@ -24,6 +24,7 @@ #include "timer.h" #include "clk.h" #include "cpu.h" +#include "periph.h"
/* input clock of PLL: SMDK5420 has 24MHz input clock */ #define CONFIG_SYS_CLK_FREQ 24000000 diff --git a/src/cpu/samsung/exynos5420/i2c.c b/src/cpu/samsung/exynos5420/i2c.c index 98eb641..43cc4d2 100644 --- a/src/cpu/samsung/exynos5420/i2c.c +++ b/src/cpu/samsung/exynos5420/i2c.c @@ -157,7 +157,6 @@ static void i2c_ch_init(struct s3c24x0_i2c_bus *bus, int speed, int slaveadd) */ static void i2c_bus_init(struct s3c24x0_i2c_bus *bus, int speed, int slaveadd) { - exynos_pinmux_config(bus->periph_id, 0); i2c_ch_init(bus, speed, slaveadd); }
diff --git a/src/cpu/samsung/exynos5420/pinmux.c b/src/cpu/samsung/exynos5420/pinmux.c index 6991dfc..566ba60 100644 --- a/src/cpu/samsung/exynos5420/pinmux.c +++ b/src/cpu/samsung/exynos5420/pinmux.c @@ -23,276 +23,180 @@ #include "cpu.h" #include "pinmux.h"
-int exynos_pinmux_config(enum periph_id peripheral, int flags) +static void exynos_pinmux_uart(int start, int count) { - int i, start, count, start_ext, pin_ext, pin, drv; - - switch (peripheral) { - case PERIPH_ID_UART0: - case PERIPH_ID_UART1: - case PERIPH_ID_UART2: - case PERIPH_ID_UART3: - switch (peripheral) { - default: - case PERIPH_ID_UART0: - start = GPIO_A00; count = 4; - break; - case PERIPH_ID_UART1: - start = GPIO_A04; count = 4; - break; - case PERIPH_ID_UART2: - start = GPIO_A10; count = 4; - break; - case PERIPH_ID_UART3: - start = GPIO_A14; count = 2; - break; - } - for (i = start; i < start + count; i++) { - gpio_set_pull(i, GPIO_PULL_NONE); + int i; + + for (i = start; i < start + count; i++) { + gpio_set_pull(i, GPIO_PULL_NONE); + gpio_cfg_pin(i, GPIO_FUNC(0x2)); + } +} + +void exynos_pinmux_uart0(void) +{ + exynos_pinmux_uart(GPIO_A00, 4); +} + +void exynos_pinmux_uart1(void) +{ + exynos_pinmux_uart(GPIO_A04, 4); +} + +void exynos_pinmux_uart2(void) +{ + exynos_pinmux_uart(GPIO_A10, 4); +} + +void exynos_pinmux_uart3(void) +{ + exynos_pinmux_uart(GPIO_A14, 2); +} + +static void exynos_pinmux_sdmmc(int start, int start_ext) +{ + int i; + + if (start_ext) { + for (i = start_ext; i <= (start_ext + 3); i++) { gpio_cfg_pin(i, GPIO_FUNC(0x2)); + gpio_set_pull(i, GPIO_PULL_UP); + gpio_set_drv(i, GPIO_DRV_4X); } - break; - case PERIPH_ID_SDMMC0: - case PERIPH_ID_SDMMC1: - case PERIPH_ID_SDMMC2: - case PERIPH_ID_SDMMC3: - pin = GPIO_FUNC(0x2); - pin_ext = GPIO_FUNC(0x2); - drv = GPIO_DRV_4X; - switch (peripheral) { - default: - case PERIPH_ID_SDMMC0: - start = GPIO_C00; - start_ext = GPIO_C10; - break; - case PERIPH_ID_SDMMC1: - start = GPIO_C20; - start_ext = 0; - break; - case PERIPH_ID_SDMMC2: - start = GPIO_C30; - /* - * TODO: (alim.akhtar@samsung.com) - * add support for 8 bit mode (needs to be a per-board - * option, so in the FDT). - */ - start_ext = 0; - break; - case PERIPH_ID_SDMMC3: - /* - * TODO: Need to add defintions for GPC4 before - * enabling this. - */ - printk(BIOS_DEBUG, "SDMMC3 not supported yet"); - return -1; - } - if ((flags & PINMUX_FLAG_8BIT_MODE) && !start_ext) { - printk(BIOS_DEBUG, "SDMMC device %d does not support 8bit mode", - peripheral); - return -1; - } - if (flags & PINMUX_FLAG_8BIT_MODE) { - ASSERT(peripheral == PERIPH_ID_SDMMC0); - for (i = 0; i <= 3; i++) { - gpio_cfg_pin(start_ext + i, pin_ext); - gpio_set_pull(start_ext + i, - GPIO_PULL_UP); - gpio_set_drv(start_ext + i, drv); - } - } - for (i = 0; i < 2; i++) { - gpio_cfg_pin(start + i, pin); - gpio_set_pull(start + i, GPIO_PULL_NONE); - gpio_set_drv(start + i, drv); - } - for (i = 2; i <= 6; i++) { - gpio_cfg_pin(start + i, pin); - gpio_set_pull(start + i, GPIO_PULL_UP); - gpio_set_drv(start + i, drv); - } - break; - case PERIPH_ID_SROMC: - /* - * 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(GPIO_Y00 + (flags & PINMUX_FLAG_BANK), - GPIO_FUNC(2)); - gpio_cfg_pin(GPIO_Y04, GPIO_FUNC(2)); - gpio_cfg_pin(GPIO_Y05, GPIO_FUNC(2)); - - for (i = 2; i < 4; i++) - gpio_cfg_pin(GPIO_Y10 + 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++) { - gpio_cfg_pin(GPIO_Y30 + i, GPIO_FUNC(2)); - gpio_set_pull(GPIO_Y30 + i, GPIO_PULL_UP); - - gpio_cfg_pin(GPIO_Y50 + i, GPIO_FUNC(2)); - gpio_set_pull(GPIO_Y50 + i, GPIO_PULL_UP); - - if (flags & PINMUX_FLAG_16BIT) { - gpio_cfg_pin(GPIO_Y60 + i, GPIO_FUNC(2)); - gpio_set_pull(GPIO_Y60 + i, - GPIO_PULL_UP); - } - } - break; - case PERIPH_ID_SPI0: - case PERIPH_ID_SPI1: - case PERIPH_ID_SPI2: - case PERIPH_ID_SPI3: { - int cfg; - - switch (peripheral) { - default: - case PERIPH_ID_SPI0: - start = GPIO_A20; - cfg = 0x2; - break; - case PERIPH_ID_SPI1: - start = GPIO_A24; - cfg = 0x2; - break; - case PERIPH_ID_SPI2: - start = GPIO_B11; - cfg = 0x5; - break; - case PERIPH_ID_SPI3: - start = GPIO_E00; - cfg = 0x2; - break; - } + }
- for (i = 0; i < 4; i++) - gpio_cfg_pin(start + i, GPIO_FUNC(cfg)); - break; + for (i = 0; i < 3; i++) { + gpio_cfg_pin(start + i, GPIO_FUNC(0x2)); + gpio_set_pull(start + i, GPIO_PULL_NONE); + gpio_set_drv(start + i, GPIO_DRV_4X); } - case PERIPH_ID_SPI4: - for (i = 0; i < 2; i++) - gpio_cfg_pin(GPIO_F02 + i, GPIO_FUNC(0x4)); - for (i = 2; i < 4; i++) - gpio_cfg_pin(GPIO_E02 + i, GPIO_FUNC(0x4)); - break; - case PERIPH_ID_BACKLIGHT: - gpio_cfg_pin(GPIO_B20, GPIO_OUTPUT); - gpio_set_value(GPIO_B20, 1); - break; - case PERIPH_ID_LCD: - gpio_cfg_pin(GPIO_Y25, GPIO_OUTPUT); - gpio_set_value(GPIO_Y25, 1); - gpio_cfg_pin(GPIO_X15, GPIO_OUTPUT); - gpio_set_value(GPIO_X15, 1); - gpio_cfg_pin(GPIO_X30, GPIO_OUTPUT); - gpio_set_value(GPIO_X30, 1); - break; - case PERIPH_ID_I2C0: - gpio_cfg_pin(GPIO_B30, GPIO_FUNC(0x2)); - gpio_cfg_pin(GPIO_B31, GPIO_FUNC(0x2)); - gpio_set_pull(GPIO_B30, GPIO_PULL_NONE); - gpio_set_pull(GPIO_B31, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2C1: - gpio_cfg_pin(GPIO_B32, GPIO_FUNC(0x2)); - gpio_cfg_pin(GPIO_B33, GPIO_FUNC(0x2)); - gpio_set_pull(GPIO_B32, GPIO_PULL_NONE); - gpio_set_pull(GPIO_B33, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2C2: - gpio_cfg_pin(GPIO_A06, GPIO_FUNC(0x3)); - gpio_cfg_pin(GPIO_A07, GPIO_FUNC(0x3)); - gpio_set_pull(GPIO_A06, GPIO_PULL_NONE); - gpio_set_pull(GPIO_A07, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2C3: - gpio_cfg_pin(GPIO_A12, GPIO_FUNC(0x3)); - gpio_cfg_pin(GPIO_A13, GPIO_FUNC(0x3)); - gpio_set_pull(GPIO_A12, GPIO_PULL_NONE); - gpio_set_pull(GPIO_A13, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2C4: - gpio_cfg_pin(GPIO_A20, GPIO_FUNC(0x3)); - gpio_cfg_pin(GPIO_A21, GPIO_FUNC(0x3)); - gpio_set_pull(GPIO_A20, GPIO_PULL_NONE); - gpio_set_pull(GPIO_A21, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2C5: - gpio_cfg_pin(GPIO_A22, GPIO_FUNC(0x3)); - gpio_cfg_pin(GPIO_A23, GPIO_FUNC(0x3)); - gpio_set_pull(GPIO_A22, GPIO_PULL_NONE); - gpio_set_pull(GPIO_A23, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2C6: - gpio_cfg_pin(GPIO_B13, GPIO_FUNC(0x4)); - gpio_cfg_pin(GPIO_B14, GPIO_FUNC(0x4)); - break; - case PERIPH_ID_I2C7: - gpio_cfg_pin(GPIO_B22, GPIO_FUNC(0x3)); - gpio_cfg_pin(GPIO_B23, GPIO_FUNC(0x3)); - gpio_set_pull(GPIO_B22, GPIO_PULL_NONE); - gpio_set_pull(GPIO_B23, GPIO_PULL_NONE); - break; - case PERIPH_ID_DPHPD: - /* Set Hotplug detect for DP */ - gpio_cfg_pin(GPIO_X07, GPIO_FUNC(0x3)); - - /* - * Hotplug detect should have an external pullup; disable the - * internal pulldown so they don't fight. - */ - gpio_set_pull(GPIO_X07, GPIO_PULL_NONE); - break; - case PERIPH_ID_I2S1: - for (i = 0; i < 5; i++) - gpio_cfg_pin(GPIO_B00 + i, GPIO_FUNC(0x02)); - break; - default: - printk(BIOS_DEBUG, "%s: invalid peripheral %d", __func__, peripheral); - return -1; + + for (i = 3; i <= 6; i++) { + gpio_cfg_pin(start + i, GPIO_FUNC(0x2)); + gpio_set_pull(start + i, GPIO_PULL_UP); + gpio_set_drv(start + i, GPIO_DRV_4X); + } +} + +void exynos_pinmux_sdmmc0(void) +{ + gpio_set_pull(GPIO_C02, GPIO_PULL_UP); + exynos_pinmux_sdmmc(GPIO_C00, GPIO_C30); +} + +void exynos_pinmux_sdmmc1(void) +{ + exynos_pinmux_sdmmc(GPIO_C10, GPIO_D14); +} + +void exynos_pinmux_sdmmc2(void) +{ + exynos_pinmux_sdmmc(GPIO_C20, 0); +} + +static void exynos_pinmux_spi(int start, int cfg) +{ + int i; + + for (i = start; i < start + 4; i++) + gpio_cfg_pin(i, cfg); +} + +void exynos_pinmux_spi0(void) +{ + exynos_pinmux_spi(GPIO_A20, 0x2); +} + +void exynos_pinmux_spi1(void) +{ + exynos_pinmux_spi(GPIO_A24, 0x2); +} + +void exynos_pinmux_spi2(void) +{ + exynos_pinmux_spi(GPIO_B11, 0x5); +} + +void exynos_pinmux_spi3(void) +{ + exynos_pinmux_spi(GPIO_F10, 0x2); +} + +void exynos_pinmux_spi4(void) +{ + int i; + + for (i = 0; i < 2; i++) { + gpio_cfg_pin(GPIO_F02 + i, GPIO_FUNC(0x4)); + gpio_cfg_pin(GPIO_E04 + i, GPIO_FUNC(0x4)); } +} + +static void exynos_pinmux_i2c(int start, int func) +{ + gpio_cfg_pin(start, GPIO_FUNC(func)); + gpio_cfg_pin(start + 1, GPIO_FUNC(func)); + gpio_set_pull(start, GPIO_PULL_NONE); + gpio_set_pull(start + 1, GPIO_PULL_NONE); +} + +void exynos_pinmux_i2c0(void) +{ + exynos_pinmux_i2c(GPIO_B30, 0x2); +} + +void exynos_pinmux_i2c1(void) +{ + exynos_pinmux_i2c(GPIO_B32, 0x2); +} + +void exynos_pinmux_i2c2(void) +{ + exynos_pinmux_i2c(GPIO_A06, 0x3); +} + +void exynos_pinmux_i2c3(void) +{ + exynos_pinmux_i2c(GPIO_A12, 0x3); +} + +void exynos_pinmux_i2c4(void) +{ + exynos_pinmux_i2c(GPIO_A20, 0x3); +} + +void exynos_pinmux_i2c5(void) +{ + exynos_pinmux_i2c(GPIO_A22, 0x3); +} + +void exynos_pinmux_i2c6(void) +{ + exynos_pinmux_i2c(GPIO_B13, 0x4); +} + +void exynos_pinmux_i2c7(void) +{ + exynos_pinmux_i2c(GPIO_B22, 0x3); +} + +void exynos_pinmux_i2c8(void) +{ + exynos_pinmux_i2c(GPIO_B34, 0x2); +} + +void exynos_pinmux_i2c9(void) +{ + exynos_pinmux_i2c(GPIO_B36, 0x2); +} + +void exynos_pinmux_i2c10(void) +{ + exynos_pinmux_i2c(GPIO_B40, 0x2); +}
- return 0; +void exynos_pinmux_dphpd(void) +{ + gpio_cfg_pin(GPIO_X07, GPIO_FUNC(0x3)); + gpio_set_pull(GPIO_X07, GPIO_PULL_NONE); } diff --git a/src/cpu/samsung/exynos5420/pinmux.h b/src/cpu/samsung/exynos5420/pinmux.h index c94b6eb..fc09fc9 100644 --- a/src/cpu/samsung/exynos5420/pinmux.h +++ b/src/cpu/samsung/exynos5420/pinmux.h @@ -20,36 +20,34 @@ #ifndef CPU_SAMSUNG_EXYNOS5420_PINMUX_H #define CPU_SAMSUNG_EXYNOS5420_PINMUX_H
-#include "periph.h" - -enum { - PINMUX_FLAG_NONE = 0x00000000, - - /* Flags for eMMC */ - PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode */ - - /* - * Flags for SPI. - */ - PINMUX_FLAG_SLAVE_MODE = 1 << 0, /* Slave mode */ - - /* Flags for SROM controller */ - PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */ - PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */ -}; - -/** - * Configures the pinmux for a particular peripheral. - * - * Each gpio can be configured in many different ways (4 bits on exynos) - * such as "input", "output", "special function", "external interrupt" - * etc. This function will configure the peripheral pinmux along with - * pull-up/down and drive strength. - * - * @param peripheral peripheral to be configured - * @param flags configure flags - * @return 0 if ok, -1 on error (e.g. unsupported peripheral) - */ -int exynos_pinmux_config(enum periph_id peripheral, int flags); +void exynos_pinmux_uart0(void); +void exynos_pinmux_uart1(void); +void exynos_pinmux_uart2(void); +void exynos_pinmux_uart3(void); + +void exynos_pinmux_sdmmc0(void); +void exynos_pinmux_sdmmc1(void); +void exynos_pinmux_sdmmc2(void); +void exynos_pinmux_sdmmc3(void); + +void exynos_pinmux_spi0(void); +void exynos_pinmux_spi1(void); +void exynos_pinmux_spi2(void); +void exynos_pinmux_spi3(void); +void exynos_pinmux_spi4(void); + +void exynos_pinmux_i2c0(void); +void exynos_pinmux_i2c1(void); +void exynos_pinmux_i2c2(void); +void exynos_pinmux_i2c3(void); +void exynos_pinmux_i2c4(void); +void exynos_pinmux_i2c5(void); +void exynos_pinmux_i2c6(void); +void exynos_pinmux_i2c7(void); +void exynos_pinmux_i2c8(void); +void exynos_pinmux_i2c9(void); +void exynos_pinmux_i2c10(void); + +void exynos_pinmux_dphpd(void);
#endif diff --git a/src/cpu/samsung/exynos5420/uart.c b/src/cpu/samsung/exynos5420/uart.c index 2dea033..de71b80 100644 --- a/src/cpu/samsung/exynos5420/uart.c +++ b/src/cpu/samsung/exynos5420/uart.c @@ -23,6 +23,7 @@ #include "uart.h" #include "clk.h" #include "cpu.h" +#include "periph.h"
#define RX_FIFO_COUNT_MASK 0xff #define RX_FIFO_FULL_MASK (1 << 8) @@ -93,7 +94,7 @@ static void exynos5_init_dev(void) struct s5p_uart *uart = (struct s5p_uart *)base_port;
// TODO initialize with correct peripheral id by base_port. - exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE); + exynos_pinmux_uart3();
/* enable FIFOs */ writel(0x1, &uart->ufcon); diff --git a/src/mainboard/google/pit/mainboard.c b/src/mainboard/google/pit/mainboard.c index dccb095..7743864 100644 --- a/src/mainboard/google/pit/mainboard.c +++ b/src/mainboard/google/pit/mainboard.c @@ -56,7 +56,7 @@ static enum exynos5_gpio_pin dp_hpd = GPIO_X07; /* active high */
static void exynos_dp_bridge_setup(void) { - exynos_pinmux_config(PERIPH_ID_DPHPD, 0); + exynos_pinmux_dphpd();
gpio_set_value(dp_pd_l, 1); gpio_cfg_pin(dp_pd_l, GPIO_OUTPUT); diff --git a/src/mainboard/google/pit/romstage.c b/src/mainboard/google/pit/romstage.c index 7cf19c5..8a5a1dd 100644 --- a/src/mainboard/google/pit/romstage.c +++ b/src/mainboard/google/pit/romstage.c @@ -50,6 +50,7 @@ static void setup_power(void) power_init();
/* Initialize I2C bus to configure PMIC. */ + exynos_pinmux_i2c0(); i2c_init(0, I2C_0_SPEED, 0x00);
printk(BIOS_DEBUG, "%s: Setting up PMIC...\n", __func__); @@ -100,16 +101,16 @@ static void setup_storage(void) } gpio_set_pull(MMC0_GPIO_PIN, GPIO_PULL_NONE); gpio_set_drv(MMC0_GPIO_PIN, GPIO_DRV_4X); - exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE); + exynos_pinmux_sdmmc0();
/* MMC2: Removable, 4 bit mode, no GPIO. */ clock_set_mshci(PERIPH_ID_SDMMC2); - exynos_pinmux_config(PERIPH_ID_SDMMC2, 0); + exynos_pinmux_sdmmc2(); }
static void setup_graphics(void) { - exynos_pinmux_config(PERIPH_ID_DPHPD, 0); + exynos_pinmux_dphpd(); }
static void setup_gpio(void)