u-boot/drivers/pinctrl/rockchip/pinctrl_rk3399.c
Philipp Tomsich 8c2bb589e2 rockchip: pinctrl: rk3399: add support for I2C8
The RK3399 has a total of 9 I2C controllers.  To support these, the
enum in periph.h is extended and the mapping from the IRQ numbers to
the peripheral-ids is extended to ensure that pinctrl requests are
passed through to the function configuring the I2C pins.

For I2C8, the pinctrl is implemented and tested (on a RK3399-Q7) using
communication with the FAN53555 connected on I2C8.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
2017-11-26 00:39:08 +01:00

457 lines
12 KiB
C

/*
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <syscon.h>
#include <asm/io.h>
#include <asm/arch/grf_rk3399.h>
#include <asm/arch/hardware.h>
#include <asm/arch/periph.h>
#include <asm/arch/clock.h>
#include <dm/pinctrl.h>
DECLARE_GLOBAL_DATA_PTR;
struct rk3399_pinctrl_priv {
struct rk3399_grf_regs *grf;
struct rk3399_pmugrf_regs *pmugrf;
};
static void pinctrl_rk3399_pwm_config(struct rk3399_grf_regs *grf,
struct rk3399_pmugrf_regs *pmugrf, int pwm_id)
{
switch (pwm_id) {
case PERIPH_ID_PWM0:
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C2_SEL_MASK,
GRF_PWM_0 << GRF_GPIO4C2_SEL_SHIFT);
break;
case PERIPH_ID_PWM1:
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C6_SEL_MASK,
GRF_PWM_1 << GRF_GPIO4C6_SEL_SHIFT);
break;
case PERIPH_ID_PWM2:
rk_clrsetreg(&pmugrf->gpio1c_iomux,
PMUGRF_GPIO1C3_SEL_MASK,
PMUGRF_PWM_2 << PMUGRF_GPIO1C3_SEL_SHIFT);
break;
case PERIPH_ID_PWM3:
if (readl(&pmugrf->soc_con0) & (1 << 5))
rk_clrsetreg(&pmugrf->gpio1b_iomux,
PMUGRF_GPIO1B6_SEL_MASK,
PMUGRF_PWM_3B << PMUGRF_GPIO1B6_SEL_SHIFT);
else
rk_clrsetreg(&pmugrf->gpio0a_iomux,
PMUGRF_GPIO0A6_SEL_MASK,
PMUGRF_PWM_3A << PMUGRF_GPIO0A6_SEL_SHIFT);
break;
default:
debug("pwm id = %d iomux error!\n", pwm_id);
break;
}
}
static void pinctrl_rk3399_i2c_config(struct rk3399_grf_regs *grf,
struct rk3399_pmugrf_regs *pmugrf,
int i2c_id)
{
switch (i2c_id) {
case PERIPH_ID_I2C0:
rk_clrsetreg(&pmugrf->gpio1b_iomux,
PMUGRF_GPIO1B7_SEL_MASK,
PMUGRF_I2C0PMU_SDA << PMUGRF_GPIO1B7_SEL_SHIFT);
rk_clrsetreg(&pmugrf->gpio1c_iomux,
PMUGRF_GPIO1C0_SEL_MASK,
PMUGRF_I2C0PMU_SCL << PMUGRF_GPIO1C0_SEL_SHIFT);
break;
case PERIPH_ID_I2C8:
rk_clrsetreg(&pmugrf->gpio1c_iomux,
PMUGRF_GPIO1C4_SEL_MASK,
PMUGRF_I2C8PMU_SDA << PMUGRF_GPIO1C4_SEL_SHIFT);
rk_clrsetreg(&pmugrf->gpio1c_iomux,
PMUGRF_GPIO1C5_SEL_MASK,
PMUGRF_I2C8PMU_SCL << PMUGRF_GPIO1C5_SEL_SHIFT);
break;
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:
default:
debug("i2c id = %d iomux error!\n", i2c_id);
break;
}
}
static void pinctrl_rk3399_lcdc_config(struct rk3399_grf_regs *grf, int lcd_id)
{
switch (lcd_id) {
case PERIPH_ID_LCDC0:
break;
default:
debug("lcdc id = %d iomux error!\n", lcd_id);
break;
}
}
static int pinctrl_rk3399_spi_config(struct rk3399_grf_regs *grf,
struct rk3399_pmugrf_regs *pmugrf,
enum periph_id spi_id, int cs)
{
switch (spi_id) {
case PERIPH_ID_SPI0:
switch (cs) {
case 0:
rk_clrsetreg(&grf->gpio3a_iomux,
GRF_GPIO3A7_SEL_MASK,
GRF_SPI0NORCODEC_CSN0
<< GRF_GPIO3A7_SEL_SHIFT);
break;
case 1:
rk_clrsetreg(&grf->gpio3b_iomux,
GRF_GPIO3B0_SEL_MASK,
GRF_SPI0NORCODEC_CSN1
<< GRF_GPIO3B0_SEL_SHIFT);
break;
default:
goto err;
}
rk_clrsetreg(&grf->gpio3a_iomux,
GRF_GPIO3A4_SEL_MASK | GRF_GPIO3A5_SEL_SHIFT
| GRF_GPIO3A6_SEL_SHIFT,
GRF_SPI0NORCODEC_RXD << GRF_GPIO3A4_SEL_SHIFT
| GRF_SPI0NORCODEC_RXD << GRF_GPIO3A5_SEL_SHIFT
| GRF_SPI0NORCODEC_RXD << GRF_GPIO3A6_SEL_SHIFT);
break;
case PERIPH_ID_SPI1:
if (cs != 0)
goto err;
rk_clrsetreg(&pmugrf->gpio1a_iomux,
PMUGRF_GPIO1A7_SEL_MASK,
PMUGRF_SPI1EC_RXD << PMUGRF_GPIO1A7_SEL_SHIFT);
rk_clrsetreg(&pmugrf->gpio1b_iomux,
PMUGRF_GPIO1B0_SEL_MASK | PMUGRF_GPIO1B1_SEL_MASK
| PMUGRF_GPIO1B2_SEL_MASK,
PMUGRF_SPI1EC_TXD << PMUGRF_GPIO1B0_SEL_SHIFT
| PMUGRF_SPI1EC_CLK << PMUGRF_GPIO1B1_SEL_SHIFT
| PMUGRF_SPI1EC_CSN0 << PMUGRF_GPIO1B2_SEL_SHIFT);
break;
case PERIPH_ID_SPI2:
if (cs != 0)
goto err;
rk_clrsetreg(&grf->gpio2b_iomux,
GRF_GPIO2B1_SEL_MASK | GRF_GPIO2B2_SEL_MASK
| GRF_GPIO2B3_SEL_MASK | GRF_GPIO2B4_SEL_MASK,
GRF_SPI2TPM_RXD << GRF_GPIO2B1_SEL_SHIFT
| GRF_SPI2TPM_TXD << GRF_GPIO2B2_SEL_SHIFT
| GRF_SPI2TPM_CLK << GRF_GPIO2B3_SEL_SHIFT
| GRF_SPI2TPM_CSN0 << GRF_GPIO2B4_SEL_SHIFT);
break;
case PERIPH_ID_SPI5:
if (cs != 0)
goto err;
rk_clrsetreg(&grf->gpio2c_iomux,
GRF_GPIO2C4_SEL_MASK | GRF_GPIO2C5_SEL_MASK
| GRF_GPIO2C6_SEL_MASK | GRF_GPIO2C7_SEL_MASK,
GRF_SPI5EXPPLUS_RXD << GRF_GPIO2C4_SEL_SHIFT
| GRF_SPI5EXPPLUS_TXD << GRF_GPIO2C5_SEL_SHIFT
| GRF_SPI5EXPPLUS_CLK << GRF_GPIO2C6_SEL_SHIFT
| GRF_SPI5EXPPLUS_CSN0 << GRF_GPIO2C7_SEL_SHIFT);
break;
default:
printf("%s: spi_id %d is not supported.\n", __func__, spi_id);
goto err;
}
return 0;
err:
debug("rkspi: periph%d cs=%d not supported", spi_id, cs);
return -ENOENT;
}
static void pinctrl_rk3399_uart_config(struct rk3399_grf_regs *grf,
struct rk3399_pmugrf_regs *pmugrf,
int uart_id)
{
switch (uart_id) {
case PERIPH_ID_UART2:
/* Using channel-C by default */
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C3_SEL_MASK,
GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C4_SEL_MASK,
GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
break;
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART3:
case PERIPH_ID_UART4:
default:
debug("uart id = %d iomux error!\n", uart_id);
break;
}
}
static void pinctrl_rk3399_sdmmc_config(struct rk3399_grf_regs *grf, int mmc_id)
{
switch (mmc_id) {
case PERIPH_ID_EMMC:
break;
case PERIPH_ID_SDCARD:
rk_clrsetreg(&grf->gpio4b_iomux,
GRF_GPIO4B0_SEL_MASK | GRF_GPIO4B1_SEL_MASK
| GRF_GPIO4B2_SEL_MASK | GRF_GPIO4B3_SEL_MASK
| GRF_GPIO4B4_SEL_MASK | GRF_GPIO4B5_SEL_MASK,
GRF_SDMMC_DATA0 << GRF_GPIO4B0_SEL_SHIFT
| GRF_SDMMC_DATA1 << GRF_GPIO4B1_SEL_SHIFT
| GRF_SDMMC_DATA2 << GRF_GPIO4B2_SEL_SHIFT
| GRF_SDMMC_DATA3 << GRF_GPIO4B3_SEL_SHIFT
| GRF_SDMMC_CLKOUT << GRF_GPIO4B4_SEL_SHIFT
| GRF_SDMMC_CMD << GRF_GPIO4B5_SEL_SHIFT);
break;
default:
debug("mmc id = %d iomux error!\n", mmc_id);
break;
}
}
#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
static void pinctrl_rk3399_gmac_config(struct rk3399_grf_regs *grf, int mmc_id)
{
rk_clrsetreg(&grf->gpio3a_iomux,
GRF_GPIO3A0_SEL_MASK | GRF_GPIO3A1_SEL_MASK |
GRF_GPIO3A2_SEL_MASK | GRF_GPIO3A3_SEL_MASK |
GRF_GPIO3A4_SEL_MASK | GRF_GPIO3A5_SEL_MASK |
GRF_GPIO3A6_SEL_MASK | GRF_GPIO3A7_SEL_MASK,
GRF_MAC_TXD2 << GRF_GPIO3A0_SEL_SHIFT |
GRF_MAC_TXD3 << GRF_GPIO3A1_SEL_SHIFT |
GRF_MAC_RXD2 << GRF_GPIO3A2_SEL_SHIFT |
GRF_MAC_RXD3 << GRF_GPIO3A3_SEL_SHIFT |
GRF_MAC_TXD0 << GRF_GPIO3A4_SEL_SHIFT |
GRF_MAC_TXD1 << GRF_GPIO3A5_SEL_SHIFT |
GRF_MAC_RXD0 << GRF_GPIO3A6_SEL_SHIFT |
GRF_MAC_RXD1 << GRF_GPIO3A7_SEL_SHIFT);
rk_clrsetreg(&grf->gpio3b_iomux,
GRF_GPIO3B0_SEL_MASK | GRF_GPIO3B1_SEL_MASK |
GRF_GPIO3B3_SEL_MASK |
GRF_GPIO3B4_SEL_MASK | GRF_GPIO3B5_SEL_MASK |
GRF_GPIO3B6_SEL_MASK,
GRF_MAC_MDC << GRF_GPIO3B0_SEL_SHIFT |
GRF_MAC_RXDV << GRF_GPIO3B1_SEL_SHIFT |
GRF_MAC_CLK << GRF_GPIO3B3_SEL_SHIFT |
GRF_MAC_TXEN << GRF_GPIO3B4_SEL_SHIFT |
GRF_MAC_MDIO << GRF_GPIO3B5_SEL_SHIFT |
GRF_MAC_RXCLK << GRF_GPIO3B6_SEL_SHIFT);
rk_clrsetreg(&grf->gpio3c_iomux,
GRF_GPIO3C1_SEL_MASK,
GRF_MAC_TXCLK << GRF_GPIO3C1_SEL_SHIFT);
/* Set drive strength for GMAC tx io, value 3 means 13mA */
rk_clrsetreg(&grf->gpio3_e[0],
GRF_GPIO3A0_E_MASK | GRF_GPIO3A1_E_MASK |
GRF_GPIO3A4_E_MASK | GRF_GPIO3A5_E0_MASK,
3 << GRF_GPIO3A0_E_SHIFT |
3 << GRF_GPIO3A1_E_SHIFT |
3 << GRF_GPIO3A4_E_SHIFT |
1 << GRF_GPIO3A5_E0_SHIFT);
rk_clrsetreg(&grf->gpio3_e[1],
GRF_GPIO3A5_E12_MASK,
1 << GRF_GPIO3A5_E12_SHIFT);
rk_clrsetreg(&grf->gpio3_e[2],
GRF_GPIO3B4_E_MASK,
3 << GRF_GPIO3B4_E_SHIFT);
rk_clrsetreg(&grf->gpio3_e[4],
GRF_GPIO3C1_E_MASK,
3 << GRF_GPIO3C1_E_SHIFT);
}
#endif
#if !defined(CONFIG_SPL_BUILD)
static void pinctrl_rk3399_hdmi_config(struct rk3399_grf_regs *grf, int hdmi_id)
{
switch (hdmi_id) {
case PERIPH_ID_HDMI:
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C0_SEL_MASK | GRF_GPIO4C1_SEL_MASK,
(GRF_HDMII2C_SCL << GRF_GPIO4C0_SEL_SHIFT) |
(GRF_HDMII2C_SDA << GRF_GPIO4C1_SEL_SHIFT));
break;
default:
debug("%s: hdmi_id = %d unsupported\n", __func__, hdmi_id);
break;
}
}
#endif
static int rk3399_pinctrl_request(struct udevice *dev, int func, int flags)
{
struct rk3399_pinctrl_priv *priv = dev_get_priv(dev);
debug("%s: func=%x, flags=%x\n", __func__, func, flags);
switch (func) {
case PERIPH_ID_PWM0:
case PERIPH_ID_PWM1:
case PERIPH_ID_PWM2:
case PERIPH_ID_PWM3:
case PERIPH_ID_PWM4:
pinctrl_rk3399_pwm_config(priv->grf, priv->pmugrf, func);
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:
pinctrl_rk3399_i2c_config(priv->grf, priv->pmugrf, func);
break;
case PERIPH_ID_SPI0:
case PERIPH_ID_SPI1:
case PERIPH_ID_SPI2:
case PERIPH_ID_SPI3:
case PERIPH_ID_SPI4:
case PERIPH_ID_SPI5:
pinctrl_rk3399_spi_config(priv->grf, priv->pmugrf, func, flags);
break;
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
case PERIPH_ID_UART4:
pinctrl_rk3399_uart_config(priv->grf, priv->pmugrf, func);
break;
case PERIPH_ID_LCDC0:
case PERIPH_ID_LCDC1:
pinctrl_rk3399_lcdc_config(priv->grf, func);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC1:
pinctrl_rk3399_sdmmc_config(priv->grf, func);
break;
#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
case PERIPH_ID_GMAC:
pinctrl_rk3399_gmac_config(priv->grf, func);
break;
#endif
#if !defined(CONFIG_SPL_BUILD)
case PERIPH_ID_HDMI:
pinctrl_rk3399_hdmi_config(priv->grf, func);
break;
#endif
default:
return -EINVAL;
}
return 0;
}
static int rk3399_pinctrl_get_periph_id(struct udevice *dev,
struct udevice *periph)
{
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
u32 cell[3];
int ret;
ret = dev_read_u32_array(periph, "interrupts", cell, ARRAY_SIZE(cell));
if (ret < 0)
return -EINVAL;
switch (cell[1]) {
case 68:
return PERIPH_ID_SPI0;
case 53:
return PERIPH_ID_SPI1;
case 52:
return PERIPH_ID_SPI2;
case 132:
return PERIPH_ID_SPI5;
case 57:
return PERIPH_ID_I2C0;
case 59: /* Note strange order */
return PERIPH_ID_I2C1;
case 35:
return PERIPH_ID_I2C2;
case 34:
return PERIPH_ID_I2C3;
case 56:
return PERIPH_ID_I2C4;
case 38:
return PERIPH_ID_I2C5;
case 37:
return PERIPH_ID_I2C6;
case 36:
return PERIPH_ID_I2C7;
case 58:
return PERIPH_ID_I2C8;
case 65:
return PERIPH_ID_SDMMC1;
#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
case 12:
return PERIPH_ID_GMAC;
#endif
#if !defined(CONFIG_SPL_BUILD)
case 23:
return PERIPH_ID_HDMI;
#endif
}
#endif
return -ENOENT;
}
static int rk3399_pinctrl_set_state_simple(struct udevice *dev,
struct udevice *periph)
{
int func;
func = rk3399_pinctrl_get_periph_id(dev, periph);
if (func < 0)
return func;
return rk3399_pinctrl_request(dev, func, 0);
}
static struct pinctrl_ops rk3399_pinctrl_ops = {
.set_state_simple = rk3399_pinctrl_set_state_simple,
.request = rk3399_pinctrl_request,
.get_periph_id = rk3399_pinctrl_get_periph_id,
};
static int rk3399_pinctrl_probe(struct udevice *dev)
{
struct rk3399_pinctrl_priv *priv = dev_get_priv(dev);
int ret = 0;
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
debug("%s: grf=%p, pmugrf=%p\n", __func__, priv->grf, priv->pmugrf);
return ret;
}
static const struct udevice_id rk3399_pinctrl_ids[] = {
{ .compatible = "rockchip,rk3399-pinctrl" },
{ }
};
U_BOOT_DRIVER(pinctrl_rk3399) = {
.name = "rockchip_rk3399_pinctrl",
.id = UCLASS_PINCTRL,
.of_match = rk3399_pinctrl_ids,
.priv_auto_alloc_size = sizeof(struct rk3399_pinctrl_priv),
.ops = &rk3399_pinctrl_ops,
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
.bind = dm_scan_fdt_dev,
#endif
.probe = rk3399_pinctrl_probe,
};