| /* |
| * Pinctrl driver for NXP LPC18xx/LPC43xx System Control Unit (SCU) |
| * |
| * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com> |
| * |
| * This file is licensed under the terms of the GNU General Public |
| * License version 2. This program is licensed "as is" without any |
| * warranty of any kind, whether express or implied. |
| */ |
| |
| #include <linux/bitops.h> |
| #include <linux/clk.h> |
| #include <linux/io.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/pinctrl/pinctrl.h> |
| #include <linux/pinctrl/pinmux.h> |
| #include <linux/pinctrl/pinconf-generic.h> |
| |
| #include "core.h" |
| #include "pinctrl-utils.h" |
| |
| /* LPC18XX SCU analog function registers */ |
| #define LPC18XX_SCU_REG_ENAIO0 0xc88 |
| #define LPC18XX_SCU_REG_ENAIO1 0xc8c |
| #define LPC18XX_SCU_REG_ENAIO2 0xc90 |
| #define LPC18XX_SCU_REG_ENAIO2_DAC BIT(0) |
| |
| /* LPC18XX SCU pin register definitions */ |
| #define LPC18XX_SCU_PIN_MODE_MASK 0x7 |
| #define LPC18XX_SCU_PIN_EPD BIT(3) |
| #define LPC18XX_SCU_PIN_EPUN BIT(4) |
| #define LPC18XX_SCU_PIN_EHS BIT(5) |
| #define LPC18XX_SCU_PIN_EZI BIT(6) |
| #define LPC18XX_SCU_PIN_ZIF BIT(7) |
| #define LPC18XX_SCU_PIN_EHD_MASK 0x300 |
| #define LPC18XX_SCU_PIN_EHD_POS 8 |
| |
| #define LPC18XX_SCU_I2C0_EFP BIT(0) |
| #define LPC18XX_SCU_I2C0_EHD BIT(2) |
| #define LPC18XX_SCU_I2C0_EZI BIT(3) |
| #define LPC18XX_SCU_I2C0_ZIF BIT(7) |
| #define LPC18XX_SCU_I2C0_SCL_SHIFT 0 |
| #define LPC18XX_SCU_I2C0_SDA_SHIFT 8 |
| |
| #define LPC18XX_SCU_FUNC_PER_PIN 8 |
| |
| /* LPC18xx pin types */ |
| enum { |
| TYPE_ND, /* Normal-drive */ |
| TYPE_HD, /* High-drive */ |
| TYPE_HS, /* High-speed */ |
| TYPE_I2C0, |
| TYPE_USB1, |
| }; |
| |
| /* LPC18xx pin functions */ |
| enum { |
| FUNC_R, /* Reserved */ |
| FUNC_ADC, |
| FUNC_ADCTRIG, |
| FUNC_CAN0, |
| FUNC_CAN1, |
| FUNC_CGU_OUT, |
| FUNC_CLKIN, |
| FUNC_CLKOUT, |
| FUNC_CTIN, |
| FUNC_CTOUT, |
| FUNC_DAC, |
| FUNC_EMC, |
| FUNC_EMC_ALT, |
| FUNC_ENET, |
| FUNC_ENET_ALT, |
| FUNC_GPIO, |
| FUNC_I2C0, |
| FUNC_I2C1, |
| FUNC_I2S0_RX_MCLK, |
| FUNC_I2S0_RX_SCK, |
| FUNC_I2S0_RX_SDA, |
| FUNC_I2S0_RX_WS, |
| FUNC_I2S0_TX_MCLK, |
| FUNC_I2S0_TX_SCK, |
| FUNC_I2S0_TX_SDA, |
| FUNC_I2S0_TX_WS, |
| FUNC_I2S1, |
| FUNC_LCD, |
| FUNC_LCD_ALT, |
| FUNC_MCTRL, |
| FUNC_NMI, |
| FUNC_QEI, |
| FUNC_SDMMC, |
| FUNC_SGPIO, |
| FUNC_SPI, |
| FUNC_SPIFI, |
| FUNC_SSP0, |
| FUNC_SSP0_ALT, |
| FUNC_SSP1, |
| FUNC_TIMER0, |
| FUNC_TIMER1, |
| FUNC_TIMER2, |
| FUNC_TIMER3, |
| FUNC_TRACE, |
| FUNC_UART0, |
| FUNC_UART1, |
| FUNC_UART2, |
| FUNC_UART3, |
| FUNC_USB0, |
| FUNC_USB1, |
| FUNC_MAX |
| }; |
| |
| static const char *const lpc18xx_function_names[] = { |
| [FUNC_R] = "reserved", |
| [FUNC_ADC] = "adc", |
| [FUNC_ADCTRIG] = "adctrig", |
| [FUNC_CAN0] = "can0", |
| [FUNC_CAN1] = "can1", |
| [FUNC_CGU_OUT] = "cgu_out", |
| [FUNC_CLKIN] = "clkin", |
| [FUNC_CLKOUT] = "clkout", |
| [FUNC_CTIN] = "ctin", |
| [FUNC_CTOUT] = "ctout", |
| [FUNC_DAC] = "dac", |
| [FUNC_EMC] = "emc", |
| [FUNC_EMC_ALT] = "emc_alt", |
| [FUNC_ENET] = "enet", |
| [FUNC_ENET_ALT] = "enet_alt", |
| [FUNC_GPIO] = "gpio", |
| [FUNC_I2C0] = "i2c0", |
| [FUNC_I2C1] = "i2c1", |
| [FUNC_I2S0_RX_MCLK] = "i2s0_rx_mclk", |
| [FUNC_I2S0_RX_SCK] = "i2s0_rx_sck", |
| [FUNC_I2S0_RX_SDA] = "i2s0_rx_sda", |
| [FUNC_I2S0_RX_WS] = "i2s0_rx_ws", |
| [FUNC_I2S0_TX_MCLK] = "i2s0_tx_mclk", |
| [FUNC_I2S0_TX_SCK] = "i2s0_tx_sck", |
| [FUNC_I2S0_TX_SDA] = "i2s0_tx_sda", |
| [FUNC_I2S0_TX_WS] = "i2s0_tx_ws", |
| [FUNC_I2S1] = "i2s1", |
| [FUNC_LCD] = "lcd", |
| [FUNC_LCD_ALT] = "lcd_alt", |
| [FUNC_MCTRL] = "mctrl", |
| [FUNC_NMI] = "nmi", |
| [FUNC_QEI] = "qei", |
| [FUNC_SDMMC] = "sdmmc", |
| [FUNC_SGPIO] = "sgpio", |
| [FUNC_SPI] = "spi", |
| [FUNC_SPIFI] = "spifi", |
| [FUNC_SSP0] = "ssp0", |
| [FUNC_SSP0_ALT] = "ssp0_alt", |
| [FUNC_SSP1] = "ssp1", |
| [FUNC_TIMER0] = "timer0", |
| [FUNC_TIMER1] = "timer1", |
| [FUNC_TIMER2] = "timer2", |
| [FUNC_TIMER3] = "timer3", |
| [FUNC_TRACE] = "trace", |
| [FUNC_UART0] = "uart0", |
| [FUNC_UART1] = "uart1", |
| [FUNC_UART2] = "uart2", |
| [FUNC_UART3] = "uart3", |
| [FUNC_USB0] = "usb0", |
| [FUNC_USB1] = "usb1", |
| }; |
| |
| struct lpc18xx_pmx_func { |
| const char **groups; |
| unsigned ngroups; |
| }; |
| |
| struct lpc18xx_scu_data { |
| struct pinctrl_dev *pctl; |
| void __iomem *base; |
| struct clk *clk; |
| struct lpc18xx_pmx_func func[FUNC_MAX]; |
| }; |
| |
| struct lpc18xx_pin_caps { |
| unsigned int offset; |
| unsigned char functions[LPC18XX_SCU_FUNC_PER_PIN]; |
| unsigned char analog; |
| unsigned char type; |
| }; |
| |
| /* Analog pins are required to have both bias and input disabled */ |
| #define LPC18XX_SCU_ANALOG_PIN_CFG 0x10 |
| |
| /* Macros to maniupluate analog member in lpc18xx_pin_caps */ |
| #define LPC18XX_ANALOG_PIN BIT(7) |
| #define LPC18XX_ANALOG_ADC(a) ((a >> 5) & 0x3) |
| #define LPC18XX_ANALOG_BIT_MASK 0x1f |
| #define ADC0 (LPC18XX_ANALOG_PIN | (0x00 << 5)) |
| #define ADC1 (LPC18XX_ANALOG_PIN | (0x01 << 5)) |
| #define DAC LPC18XX_ANALOG_PIN |
| |
| #define LPC_P(port, pin, f0, f1, f2, f3, f4, f5, f6, f7, a, t) \ |
| static struct lpc18xx_pin_caps lpc18xx_pin_p##port##_##pin = { \ |
| .offset = 0x##port * 32 * 4 + pin * 4, \ |
| .functions = { \ |
| FUNC_##f0, FUNC_##f1, FUNC_##f2, \ |
| FUNC_##f3, FUNC_##f4, FUNC_##f5, \ |
| FUNC_##f6, FUNC_##f7, \ |
| }, \ |
| .analog = a, \ |
| .type = TYPE_##t, \ |
| } |
| |
| #define LPC_N(pname, off, f0, f1, f2, f3, f4, f5, f6, f7, a, t) \ |
| static struct lpc18xx_pin_caps lpc18xx_pin_##pname = { \ |
| .offset = off, \ |
| .functions = { \ |
| FUNC_##f0, FUNC_##f1, FUNC_##f2, \ |
| FUNC_##f3, FUNC_##f4, FUNC_##f5, \ |
| FUNC_##f6, FUNC_##f7, \ |
| }, \ |
| .analog = a, \ |
| .type = TYPE_##t, \ |
| } |
| |
| |
| /* Pinmuxing table taken from data sheet */ |
| /* Pin FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */ |
| LPC_P(0,0, GPIO, SSP1, ENET, SGPIO, R, R, I2S0_TX_WS,I2S1, 0, ND); |
| LPC_P(0,1, GPIO, SSP1,ENET_ALT,SGPIO, R, R, ENET, I2S1, 0, ND); |
| LPC_P(1,0, GPIO, CTIN, EMC, R, R, SSP0, SGPIO, R, 0, ND); |
| LPC_P(1,1, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND); |
| LPC_P(1,2, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND); |
| LPC_P(1,3, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND); |
| LPC_P(1,4, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND); |
| LPC_P(1,5, GPIO, CTOUT, R, EMC, USB0, SSP1, SGPIO, SDMMC, 0, ND); |
| LPC_P(1,6, GPIO, CTIN, R, EMC, R, R, SGPIO, SDMMC, 0, ND); |
| LPC_P(1,7, GPIO, UART1, CTOUT, EMC, USB0, R, R, R, 0, ND); |
| LPC_P(1,8, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); |
| LPC_P(1,9, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); |
| LPC_P(1,10, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); |
| LPC_P(1,11, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); |
| LPC_P(1,12, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND); |
| LPC_P(1,13, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND); |
| LPC_P(1,14, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, R, 0, ND); |
| LPC_P(1,15, GPIO, UART2, SGPIO, ENET, TIMER0, R, R, R, 0, ND); |
| LPC_P(1,16, GPIO, UART2, SGPIO,ENET_ALT,TIMER0, R, R, ENET, 0, ND); |
| LPC_P(1,17, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, HD); |
| LPC_P(1,18, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, ND); |
| LPC_P(1,19, ENET, SSP1, R, R, CLKOUT, R, I2S0_RX_MCLK,I2S1, 0, ND); |
| LPC_P(1,20, GPIO, SSP1, R, ENET, TIMER0, R, SGPIO, R, 0, ND); |
| LPC_P(2,0, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, ENET, 0, ND); |
| LPC_P(2,1, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, R, 0, ND); |
| LPC_P(2,2, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND); |
| LPC_P(2,3, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD); |
| LPC_P(2,4, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD); |
| LPC_P(2,5, SGPIO, CTIN, USB1, ADCTRIG, GPIO, R, TIMER3, USB0, 0, HD); |
| LPC_P(2,6, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND); |
| LPC_P(2,7, GPIO, CTOUT, UART3, EMC, R, R, TIMER3, R, 0, ND); |
| LPC_P(2,8, SGPIO, CTOUT, UART3, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(2,9, GPIO, CTOUT, UART3, EMC, R, R, R, R, 0, ND); |
| LPC_P(2,10, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND); |
| LPC_P(2,11, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND); |
| LPC_P(2,12, GPIO, CTOUT, R, EMC, R, R, R, UART2, 0, ND); |
| LPC_P(2,13, GPIO, CTIN, R, EMC, R, R, R, UART2, 0, ND); |
| LPC_P(3,0, I2S0_RX_SCK, I2S0_RX_MCLK, I2S0_TX_SCK, I2S0_TX_MCLK,SSP0,R,R,R, 0, ND); |
| LPC_P(3,1, I2S0_TX_WS, I2S0_RX_WS,CAN0,USB1,GPIO, R, LCD, R, 0, ND); |
| LPC_P(3,2, I2S0_TX_SDA, I2S0_RX_SDA,CAN0,USB1,GPIO, R, LCD, R, 0, ND); |
| LPC_P(3,3, R, SPI, SSP0, SPIFI, CGU_OUT,R, I2S0_TX_MCLK, I2S1, 0, HS); |
| LPC_P(3,4, GPIO, R, R, SPIFI, UART1, I2S0_TX_WS, I2S1, LCD, 0, ND); |
| LPC_P(3,5, GPIO, R, R, SPIFI, UART1, I2S0_TX_SDA,I2S1, LCD, 0, ND); |
| LPC_P(3,6, GPIO, SPI, SSP0, SPIFI, R, SSP0_ALT, R, R, 0, ND); |
| LPC_P(3,7, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND); |
| LPC_P(3,8, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND); |
| LPC_P(4,0, GPIO, MCTRL, NMI, R, R, LCD, UART3, R, 0, ND); |
| LPC_P(4,1, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, ENET, ADC0|1, ND); |
| LPC_P(4,2, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, 0, ND); |
| LPC_P(4,3, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, ADC0|0, ND); |
| LPC_P(4,4, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, DAC, ND); |
| LPC_P(4,5, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND); |
| LPC_P(4,6, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND); |
| LPC_P(4,7, LCD, CLKIN, R, R, R, R, I2S1,I2S0_TX_SCK, 0, ND); |
| LPC_P(4,8, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND); |
| LPC_P(4,9, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND); |
| LPC_P(4,10, R, CTIN, LCD, R, GPIO, LCD_ALT, R, SGPIO, 0, ND); |
| LPC_P(5,0, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,1, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,2, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,3, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,4, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,5, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,6, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(5,7, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); |
| LPC_P(6,0, R, I2S0_RX_MCLK,R, R, I2S0_RX_SCK, R, R, R, 0, ND); |
| LPC_P(6,1, GPIO, EMC, UART0, I2S0_RX_WS, R, TIMER2, R, R, 0, ND); |
| LPC_P(6,2, GPIO, EMC, UART0, I2S0_RX_SDA, R, TIMER2, R, R, 0, ND); |
| LPC_P(6,3, GPIO, USB0, SGPIO, EMC, R, TIMER2, R, R, 0, ND); |
| LPC_P(6,4, GPIO, CTIN, UART0, EMC, R, R, R, R, 0, ND); |
| LPC_P(6,5, GPIO, CTOUT, UART0, EMC, R, R, R, R, 0, ND); |
| LPC_P(6,6, GPIO, EMC, SGPIO, USB0, R, TIMER2, R, R, 0, ND); |
| LPC_P(6,7, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND); |
| LPC_P(6,8, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND); |
| LPC_P(6,9, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND); |
| LPC_P(6,10, GPIO, MCTRL, R, EMC, R, R, R, R, 0, ND); |
| LPC_P(6,11, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND); |
| LPC_P(6,12, GPIO, CTOUT, R, EMC, R, R, R, R, 0, ND); |
| LPC_P(7,0, GPIO, CTOUT, R, LCD, R, R, R, SGPIO, 0, ND); |
| LPC_P(7,1, GPIO, CTOUT,I2S0_TX_WS,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND); |
| LPC_P(7,2, GPIO, CTIN,I2S0_TX_SDA,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND); |
| LPC_P(7,3, GPIO, CTIN, R, LCD,LCD_ALT, R, R, R, 0, ND); |
| LPC_P(7,4, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|4, ND); |
| LPC_P(7,5, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|3, ND); |
| LPC_P(7,6, GPIO, CTOUT, R, LCD, R, TRACE, R, R, 0, ND); |
| LPC_P(7,7, GPIO, CTOUT, R, LCD, R, TRACE, ENET, SGPIO, ADC1|6, ND); |
| LPC_P(8,0, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD); |
| LPC_P(8,1, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD); |
| LPC_P(8,2, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD); |
| LPC_P(8,3, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); |
| LPC_P(8,4, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); |
| LPC_P(8,5, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); |
| LPC_P(8,6, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); |
| LPC_P(8,7, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); |
| LPC_P(8,8, R, USB1, R, R, R, R,CGU_OUT, I2S1, 0, ND); |
| LPC_P(9,0, GPIO, MCTRL, R, R, R, ENET, SGPIO, SSP0, 0, ND); |
| LPC_P(9,1, GPIO, MCTRL, R, R, I2S0_TX_WS,ENET, SGPIO, SSP0, 0, ND); |
| LPC_P(9,2, GPIO, MCTRL, R, R, I2S0_TX_SDA,ENET,SGPIO, SSP0, 0, ND); |
| LPC_P(9,3, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART3, 0, ND); |
| LPC_P(9,4, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART3, 0, ND); |
| LPC_P(9,5, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART0, 0, ND); |
| LPC_P(9,6, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART0, 0, ND); |
| LPC_P(a,0, R, R, R, R, R, I2S1, CGU_OUT, R, 0, ND); |
| LPC_P(a,1, GPIO, QEI, R, UART2, R, R, R, R, 0, HD); |
| LPC_P(a,2, GPIO, QEI, R, UART2, R, R, R, R, 0, HD); |
| LPC_P(a,3, GPIO, QEI, R, R, R, R, R, R, 0, HD); |
| LPC_P(a,4, R, CTOUT, R, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(b,0, R, CTOUT, LCD, R, GPIO, R, R, R, 0, ND); |
| LPC_P(b,1, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND); |
| LPC_P(b,2, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND); |
| LPC_P(b,3, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND); |
| LPC_P(b,4, R, USB1, LCD, R, GPIO, CTIN, R, R, 0, ND); |
| LPC_P(b,5, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, 0, ND); |
| LPC_P(b,6, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, ADC0|6, ND); |
| LPC_P(c,0, R, USB1, R, ENET, LCD, R, R, SDMMC, ADC1|1, ND); |
| LPC_P(c,1, USB1, R, UART1, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,2, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, 0, ND); |
| LPC_P(c,3, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, ADC1|0, ND); |
| LPC_P(c,4, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,5, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,6, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,7, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,8, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,9, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,10, R, USB1, UART1, R, GPIO, R, TIMER3, SDMMC, 0, ND); |
| LPC_P(c,11, R, USB1, UART1, R, GPIO, R, R, SDMMC, 0, ND); |
| LPC_P(c,12, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_SDA,SDMMC, 0, ND); |
| LPC_P(c,13, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_WS, SDMMC, 0, ND); |
| LPC_P(c,14, R, R, UART1, R, GPIO, SGPIO, ENET, SDMMC, 0, ND); |
| LPC_P(d,0, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,1, R, R, EMC, R, GPIO, SDMMC, R, SGPIO, 0, ND); |
| LPC_P(d,2, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,3, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,4, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,5, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,6, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,7, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,8, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,9, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); |
| LPC_P(d,10, R, CTIN, EMC, R, GPIO, R, R, R, 0, ND); |
| LPC_P(d,11, R, R, EMC, R, GPIO, USB1, CTOUT, R, 0, ND); |
| LPC_P(d,12, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND); |
| LPC_P(d,13, R, CTIN, EMC, R, GPIO, R, CTOUT, R, 0, ND); |
| LPC_P(d,14, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND); |
| LPC_P(d,15, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND); |
| LPC_P(d,16, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND); |
| LPC_P(e,0, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND); |
| LPC_P(e,1, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND); |
| LPC_P(e,2,ADCTRIG, CAN0, R, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,3, R, CAN0,ADCTRIG, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,4, R, NMI, R, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,5, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,6, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,7, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,8, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,9, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,10, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,11, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,12, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,13, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,14, R, R, R, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(e,15, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND); |
| LPC_P(f,0, SSP0, CLKIN, R, R, R, R, R, I2S1, 0, ND); |
| LPC_P(f,1, R, R, SSP0, R, GPIO, R, SGPIO, R, 0, ND); |
| LPC_P(f,2, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND); |
| LPC_P(f,3, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND); |
| LPC_P(f,4, SSP1, CLKIN, TRACE, R, R, R, I2S0_TX_MCLK,I2S0_RX_SCK, 0, ND); |
| LPC_P(f,5, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, R, ADC1|4, ND); |
| LPC_P(f,6, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|3, ND); |
| LPC_P(f,7, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|7, ND); |
| LPC_P(f,8, R, UART0, CTIN, TRACE, GPIO, R, SGPIO, R, ADC0|2, ND); |
| LPC_P(f,9, R, UART0, CTOUT, R, GPIO, R, SGPIO, R, ADC1|2, ND); |
| LPC_P(f,10, R, UART0, R, R, GPIO, R, SDMMC, R, ADC0|5, ND); |
| LPC_P(f,11, R, UART0, R, R, GPIO, R, SDMMC, R, ADC1|5, ND); |
| |
| /* Pin Offset FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */ |
| LPC_N(clk0, 0xc00, EMC, CLKOUT, R, R, SDMMC, EMC_ALT, SSP1, ENET, 0, HS); |
| LPC_N(clk1, 0xc04, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS); |
| LPC_N(clk2, 0xc08, EMC, CLKOUT, R, R, SDMMC, EMC_ALT,I2S0_TX_MCLK,I2S1, 0, HS); |
| LPC_N(clk3, 0xc0c, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS); |
| LPC_N(usb1_dm, 0xc80, R, R, R, R, R, R, R, R, 0, USB1); |
| LPC_N(usb1_dp, 0xc80, R, R, R, R, R, R, R, R, 0, USB1); |
| LPC_N(i2c0_scl, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0); |
| LPC_N(i2c0_sda, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0); |
| |
| #define LPC18XX_PIN_P(port, pin) { \ |
| .number = 0x##port * 32 + pin, \ |
| .name = "p"#port"_"#pin, \ |
| .drv_data = &lpc18xx_pin_p##port##_##pin \ |
| } |
| |
| /* Pin numbers for special pins */ |
| enum { |
| PIN_CLK0 = 600, |
| PIN_CLK1, |
| PIN_CLK2, |
| PIN_CLK3, |
| PIN_USB1_DM, |
| PIN_USB1_DP, |
| PIN_I2C0_SCL, |
| PIN_I2C0_SDA, |
| }; |
| |
| #define LPC18XX_PIN(pname, n) { \ |
| .number = n, \ |
| .name = #pname, \ |
| .drv_data = &lpc18xx_pin_##pname \ |
| } |
| |
| static const struct pinctrl_pin_desc lpc18xx_pins[] = { |
| LPC18XX_PIN_P(0,0), |
| LPC18XX_PIN_P(0,1), |
| LPC18XX_PIN_P(1,0), |
| LPC18XX_PIN_P(1,1), |
| LPC18XX_PIN_P(1,2), |
| LPC18XX_PIN_P(1,3), |
| LPC18XX_PIN_P(1,4), |
| LPC18XX_PIN_P(1,5), |
| LPC18XX_PIN_P(1,6), |
| LPC18XX_PIN_P(1,7), |
| LPC18XX_PIN_P(1,8), |
| LPC18XX_PIN_P(1,9), |
| LPC18XX_PIN_P(1,10), |
| LPC18XX_PIN_P(1,11), |
| LPC18XX_PIN_P(1,12), |
| LPC18XX_PIN_P(1,13), |
| LPC18XX_PIN_P(1,14), |
| LPC18XX_PIN_P(1,15), |
| LPC18XX_PIN_P(1,16), |
| LPC18XX_PIN_P(1,17), |
| LPC18XX_PIN_P(1,18), |
| LPC18XX_PIN_P(1,19), |
| LPC18XX_PIN_P(1,20), |
| LPC18XX_PIN_P(2,0), |
| LPC18XX_PIN_P(2,1), |
| LPC18XX_PIN_P(2,2), |
| LPC18XX_PIN_P(2,3), |
| LPC18XX_PIN_P(2,4), |
| LPC18XX_PIN_P(2,5), |
| LPC18XX_PIN_P(2,6), |
| LPC18XX_PIN_P(2,7), |
| LPC18XX_PIN_P(2,8), |
| LPC18XX_PIN_P(2,9), |
| LPC18XX_PIN_P(2,10), |
| LPC18XX_PIN_P(2,11), |
| LPC18XX_PIN_P(2,12), |
| LPC18XX_PIN_P(2,13), |
| LPC18XX_PIN_P(3,0), |
| LPC18XX_PIN_P(3,1), |
| LPC18XX_PIN_P(3,2), |
| LPC18XX_PIN_P(3,3), |
| LPC18XX_PIN_P(3,4), |
| LPC18XX_PIN_P(3,5), |
| LPC18XX_PIN_P(3,6), |
| LPC18XX_PIN_P(3,7), |
| LPC18XX_PIN_P(3,8), |
| LPC18XX_PIN_P(4,0), |
| LPC18XX_PIN_P(4,1), |
| LPC18XX_PIN_P(4,2), |
| LPC18XX_PIN_P(4,3), |
| LPC18XX_PIN_P(4,4), |
| LPC18XX_PIN_P(4,5), |
| LPC18XX_PIN_P(4,6), |
| LPC18XX_PIN_P(4,7), |
| LPC18XX_PIN_P(4,8), |
| LPC18XX_PIN_P(4,9), |
| LPC18XX_PIN_P(4,10), |
| LPC18XX_PIN_P(5,0), |
| LPC18XX_PIN_P(5,1), |
| LPC18XX_PIN_P(5,2), |
| LPC18XX_PIN_P(5,3), |
| LPC18XX_PIN_P(5,4), |
| LPC18XX_PIN_P(5,5), |
| LPC18XX_PIN_P(5,6), |
| LPC18XX_PIN_P(5,7), |
| LPC18XX_PIN_P(6,0), |
| LPC18XX_PIN_P(6,1), |
| LPC18XX_PIN_P(6,2), |
| LPC18XX_PIN_P(6,3), |
| LPC18XX_PIN_P(6,4), |
| LPC18XX_PIN_P(6,5), |
| LPC18XX_PIN_P(6,6), |
| LPC18XX_PIN_P(6,7), |
| LPC18XX_PIN_P(6,8), |
| LPC18XX_PIN_P(6,9), |
| LPC18XX_PIN_P(6,10), |
| LPC18XX_PIN_P(6,11), |
| LPC18XX_PIN_P(6,12), |
| LPC18XX_PIN_P(7,0), |
| LPC18XX_PIN_P(7,1), |
| LPC18XX_PIN_P(7,2), |
| LPC18XX_PIN_P(7,3), |
| LPC18XX_PIN_P(7,4), |
| LPC18XX_PIN_P(7,5), |
| LPC18XX_PIN_P(7,6), |
| LPC18XX_PIN_P(7,7), |
| LPC18XX_PIN_P(8,0), |
| LPC18XX_PIN_P(8,1), |
| LPC18XX_PIN_P(8,2), |
| LPC18XX_PIN_P(8,3), |
| LPC18XX_PIN_P(8,4), |
| LPC18XX_PIN_P(8,5), |
| LPC18XX_PIN_P(8,6), |
| LPC18XX_PIN_P(8,7), |
| LPC18XX_PIN_P(8,8), |
| LPC18XX_PIN_P(9,0), |
| LPC18XX_PIN_P(9,1), |
| LPC18XX_PIN_P(9,2), |
| LPC18XX_PIN_P(9,3), |
| LPC18XX_PIN_P(9,4), |
| LPC18XX_PIN_P(9,5), |
| LPC18XX_PIN_P(9,6), |
| LPC18XX_PIN_P(a,0), |
| LPC18XX_PIN_P(a,1), |
| LPC18XX_PIN_P(a,2), |
| LPC18XX_PIN_P(a,3), |
| LPC18XX_PIN_P(a,4), |
| LPC18XX_PIN_P(b,0), |
| LPC18XX_PIN_P(b,1), |
| LPC18XX_PIN_P(b,2), |
| LPC18XX_PIN_P(b,3), |
| LPC18XX_PIN_P(b,4), |
| LPC18XX_PIN_P(b,5), |
| LPC18XX_PIN_P(b,6), |
| LPC18XX_PIN_P(c,0), |
| LPC18XX_PIN_P(c,1), |
| LPC18XX_PIN_P(c,2), |
| LPC18XX_PIN_P(c,3), |
| LPC18XX_PIN_P(c,4), |
| LPC18XX_PIN_P(c,5), |
| LPC18XX_PIN_P(c,6), |
| LPC18XX_PIN_P(c,7), |
| LPC18XX_PIN_P(c,8), |
| LPC18XX_PIN_P(c,9), |
| LPC18XX_PIN_P(c,10), |
| LPC18XX_PIN_P(c,11), |
| LPC18XX_PIN_P(c,12), |
| LPC18XX_PIN_P(c,13), |
| LPC18XX_PIN_P(c,14), |
| LPC18XX_PIN_P(d,0), |
| LPC18XX_PIN_P(d,1), |
| LPC18XX_PIN_P(d,2), |
| LPC18XX_PIN_P(d,3), |
| LPC18XX_PIN_P(d,4), |
| LPC18XX_PIN_P(d,5), |
| LPC18XX_PIN_P(d,6), |
| LPC18XX_PIN_P(d,7), |
| LPC18XX_PIN_P(d,8), |
| LPC18XX_PIN_P(d,9), |
| LPC18XX_PIN_P(d,10), |
| LPC18XX_PIN_P(d,11), |
| LPC18XX_PIN_P(d,12), |
| LPC18XX_PIN_P(d,13), |
| LPC18XX_PIN_P(d,14), |
| LPC18XX_PIN_P(d,15), |
| LPC18XX_PIN_P(d,16), |
| LPC18XX_PIN_P(e,0), |
| LPC18XX_PIN_P(e,1), |
| LPC18XX_PIN_P(e,2), |
| LPC18XX_PIN_P(e,3), |
| LPC18XX_PIN_P(e,4), |
| LPC18XX_PIN_P(e,5), |
| LPC18XX_PIN_P(e,6), |
| LPC18XX_PIN_P(e,7), |
| LPC18XX_PIN_P(e,8), |
| LPC18XX_PIN_P(e,9), |
| LPC18XX_PIN_P(e,10), |
| LPC18XX_PIN_P(e,11), |
| LPC18XX_PIN_P(e,12), |
| LPC18XX_PIN_P(e,13), |
| LPC18XX_PIN_P(e,14), |
| LPC18XX_PIN_P(e,15), |
| LPC18XX_PIN_P(f,0), |
| LPC18XX_PIN_P(f,1), |
| LPC18XX_PIN_P(f,2), |
| LPC18XX_PIN_P(f,3), |
| LPC18XX_PIN_P(f,4), |
| LPC18XX_PIN_P(f,5), |
| LPC18XX_PIN_P(f,6), |
| LPC18XX_PIN_P(f,7), |
| LPC18XX_PIN_P(f,8), |
| LPC18XX_PIN_P(f,9), |
| LPC18XX_PIN_P(f,10), |
| LPC18XX_PIN_P(f,11), |
| |
| LPC18XX_PIN(clk0, PIN_CLK0), |
| LPC18XX_PIN(clk1, PIN_CLK1), |
| LPC18XX_PIN(clk2, PIN_CLK2), |
| LPC18XX_PIN(clk3, PIN_CLK3), |
| LPC18XX_PIN(usb1_dm, PIN_USB1_DM), |
| LPC18XX_PIN(usb1_dp, PIN_USB1_DP), |
| LPC18XX_PIN(i2c0_scl, PIN_I2C0_SCL), |
| LPC18XX_PIN(i2c0_sda, PIN_I2C0_SDA), |
| }; |
| |
| static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg) |
| { |
| /* TODO */ |
| return -ENOTSUPP; |
| } |
| |
| static int lpc18xx_pconf_get_i2c0(enum pin_config_param param, int *arg, u32 reg, |
| unsigned pin) |
| { |
| u8 shift; |
| |
| if (pin == PIN_I2C0_SCL) |
| shift = LPC18XX_SCU_I2C0_SCL_SHIFT; |
| else |
| shift = LPC18XX_SCU_I2C0_SDA_SHIFT; |
| |
| switch (param) { |
| case PIN_CONFIG_INPUT_ENABLE: |
| if (reg & (LPC18XX_SCU_I2C0_EZI << shift)) |
| *arg = 1; |
| else |
| return -EINVAL; |
| break; |
| |
| case PIN_CONFIG_SLEW_RATE: |
| if (reg & (LPC18XX_SCU_I2C0_EHD << shift)) |
| *arg = 1; |
| else |
| *arg = 0; |
| break; |
| |
| case PIN_CONFIG_INPUT_SCHMITT: |
| if (reg & (LPC18XX_SCU_I2C0_EFP << shift)) |
| *arg = 3; |
| else |
| *arg = 50; |
| break; |
| |
| case PIN_CONFIG_INPUT_SCHMITT_ENABLE: |
| if (reg & (LPC18XX_SCU_I2C0_ZIF << shift)) |
| return -EINVAL; |
| else |
| *arg = 1; |
| break; |
| |
| default: |
| return -ENOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int lpc18xx_pconf_get_pin(enum pin_config_param param, int *arg, u32 reg, |
| struct lpc18xx_pin_caps *pin_cap) |
| { |
| switch (param) { |
| case PIN_CONFIG_BIAS_DISABLE: |
| if ((!(reg & LPC18XX_SCU_PIN_EPD)) && (reg & LPC18XX_SCU_PIN_EPUN)) |
| ; |
| else |
| return -EINVAL; |
| break; |
| |
| case PIN_CONFIG_BIAS_PULL_UP: |
| if (reg & LPC18XX_SCU_PIN_EPUN) |
| return -EINVAL; |
| else |
| *arg = 1; |
| break; |
| |
| case PIN_CONFIG_BIAS_PULL_DOWN: |
| if (reg & LPC18XX_SCU_PIN_EPD) |
| *arg = 1; |
| else |
| return -EINVAL; |
| break; |
| |
| case PIN_CONFIG_INPUT_ENABLE: |
| if (reg & LPC18XX_SCU_PIN_EZI) |
| *arg = 1; |
| else |
| return -EINVAL; |
| break; |
| |
| case PIN_CONFIG_SLEW_RATE: |
| if (pin_cap->type == TYPE_HD) |
| return -ENOTSUPP; |
| |
| if (reg & LPC18XX_SCU_PIN_EHS) |
| *arg = 1; |
| else |
| *arg = 0; |
| break; |
| |
| case PIN_CONFIG_INPUT_SCHMITT_ENABLE: |
| if (reg & LPC18XX_SCU_PIN_ZIF) |
| return -EINVAL; |
| else |
| *arg = 1; |
| break; |
| |
| case PIN_CONFIG_DRIVE_STRENGTH: |
| if (pin_cap->type != TYPE_HD) |
| return -ENOTSUPP; |
| |
| *arg = (reg & LPC18XX_SCU_PIN_EHD_MASK) >> LPC18XX_SCU_PIN_EHD_POS; |
| switch (*arg) { |
| case 3: *arg += 5; |
| case 2: *arg += 5; |
| case 1: *arg += 3; |
| case 0: *arg += 4; |
| } |
| break; |
| |
| default: |
| return -ENOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static struct lpc18xx_pin_caps *lpc18xx_get_pin_caps(unsigned pin) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { |
| if (lpc18xx_pins[i].number == pin) |
| return lpc18xx_pins[i].drv_data; |
| } |
| |
| return NULL; |
| } |
| |
| static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin, |
| unsigned long *config) |
| { |
| struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); |
| enum pin_config_param param = pinconf_to_config_param(*config); |
| struct lpc18xx_pin_caps *pin_cap; |
| int ret, arg = 0; |
| u32 reg; |
| |
| pin_cap = lpc18xx_get_pin_caps(pin); |
| if (!pin_cap) |
| return -EINVAL; |
| |
| reg = readl(scu->base + pin_cap->offset); |
| |
| if (pin_cap->type == TYPE_I2C0) |
| ret = lpc18xx_pconf_get_i2c0(param, &arg, reg, pin); |
| else if (pin_cap->type == TYPE_USB1) |
| ret = lpc18xx_pconf_get_usb1(param, &arg, reg); |
| else |
| ret = lpc18xx_pconf_get_pin(param, &arg, reg, pin_cap); |
| |
| if (ret < 0) |
| return ret; |
| |
| *config = pinconf_to_config_packed(param, (u16)arg); |
| |
| return 0; |
| } |
| |
| static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev, |
| enum pin_config_param param, |
| u16 param_val, u32 *reg) |
| { |
| /* TODO */ |
| return -ENOTSUPP; |
| } |
| |
| static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev, |
| enum pin_config_param param, |
| u16 param_val, u32 *reg, |
| unsigned pin) |
| { |
| u8 shift; |
| |
| if (pin == PIN_I2C0_SCL) |
| shift = LPC18XX_SCU_I2C0_SCL_SHIFT; |
| else |
| shift = LPC18XX_SCU_I2C0_SDA_SHIFT; |
| |
| switch (param) { |
| case PIN_CONFIG_INPUT_ENABLE: |
| if (param_val) |
| *reg |= (LPC18XX_SCU_I2C0_EZI << shift); |
| else |
| *reg &= ~(LPC18XX_SCU_I2C0_EZI << shift); |
| break; |
| |
| case PIN_CONFIG_SLEW_RATE: |
| if (param_val) |
| *reg |= (LPC18XX_SCU_I2C0_EHD << shift); |
| else |
| *reg &= ~(LPC18XX_SCU_I2C0_EHD << shift); |
| break; |
| |
| case PIN_CONFIG_INPUT_SCHMITT: |
| if (param_val == 3) |
| *reg |= (LPC18XX_SCU_I2C0_EFP << shift); |
| else if (param_val == 50) |
| *reg &= ~(LPC18XX_SCU_I2C0_EFP << shift); |
| else |
| return -ENOTSUPP; |
| break; |
| |
| case PIN_CONFIG_INPUT_SCHMITT_ENABLE: |
| if (param_val) |
| *reg &= ~(LPC18XX_SCU_I2C0_ZIF << shift); |
| else |
| *reg |= (LPC18XX_SCU_I2C0_ZIF << shift); |
| break; |
| |
| default: |
| dev_err(pctldev->dev, "Property not supported\n"); |
| return -ENOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, |
| enum pin_config_param param, |
| u16 param_val, u32 *reg, |
| struct lpc18xx_pin_caps *pin_cap) |
| { |
| switch (param) { |
| case PIN_CONFIG_BIAS_DISABLE: |
| *reg &= ~LPC18XX_SCU_PIN_EPD; |
| *reg |= LPC18XX_SCU_PIN_EPUN; |
| break; |
| |
| case PIN_CONFIG_BIAS_PULL_UP: |
| *reg &= ~LPC18XX_SCU_PIN_EPUN; |
| break; |
| |
| case PIN_CONFIG_BIAS_PULL_DOWN: |
| *reg |= LPC18XX_SCU_PIN_EPD; |
| break; |
| |
| case PIN_CONFIG_INPUT_ENABLE: |
| if (param_val) |
| *reg |= LPC18XX_SCU_PIN_EZI; |
| else |
| *reg &= ~LPC18XX_SCU_PIN_EZI; |
| break; |
| |
| case PIN_CONFIG_SLEW_RATE: |
| if (pin_cap->type == TYPE_HD) { |
| dev_err(pctldev->dev, "Slew rate unsupported on high-drive pins\n"); |
| return -ENOTSUPP; |
| } |
| |
| if (param_val == 0) |
| *reg &= ~LPC18XX_SCU_PIN_EHS; |
| else |
| *reg |= LPC18XX_SCU_PIN_EHS; |
| break; |
| |
| case PIN_CONFIG_INPUT_SCHMITT_ENABLE: |
| if (param_val) |
| *reg &= ~LPC18XX_SCU_PIN_ZIF; |
| else |
| *reg |= LPC18XX_SCU_PIN_ZIF; |
| break; |
| |
| case PIN_CONFIG_DRIVE_STRENGTH: |
| if (pin_cap->type != TYPE_HD) { |
| dev_err(pctldev->dev, "Drive strength available only on high-drive pins\n"); |
| return -ENOTSUPP; |
| } |
| *reg &= ~LPC18XX_SCU_PIN_EHD_MASK; |
| |
| switch (param_val) { |
| case 20: param_val -= 5; |
| case 14: param_val -= 5; |
| case 8: param_val -= 3; |
| case 4: param_val -= 4; |
| break; |
| default: |
| dev_err(pctldev->dev, "Drive strength %u unsupported\n", param_val); |
| return -ENOTSUPP; |
| } |
| *reg |= param_val << LPC18XX_SCU_PIN_EHD_POS; |
| break; |
| |
| default: |
| dev_err(pctldev->dev, "Property not supported\n"); |
| return -ENOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int lpc18xx_pconf_set(struct pinctrl_dev *pctldev, unsigned pin, |
| unsigned long *configs, unsigned num_configs) |
| { |
| struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); |
| struct lpc18xx_pin_caps *pin_cap; |
| enum pin_config_param param; |
| u16 param_val; |
| u32 reg; |
| int ret; |
| int i; |
| |
| pin_cap = lpc18xx_get_pin_caps(pin); |
| if (!pin_cap) |
| return -EINVAL; |
| |
| reg = readl(scu->base + pin_cap->offset); |
| |
| for (i = 0; i < num_configs; i++) { |
| param = pinconf_to_config_param(configs[i]); |
| param_val = pinconf_to_config_argument(configs[i]); |
| |
| if (pin_cap->type == TYPE_I2C0) |
| ret = lpc18xx_pconf_set_i2c0(pctldev, param, param_val, ®, pin); |
| else if (pin_cap->type == TYPE_USB1) |
| ret = lpc18xx_pconf_set_usb1(pctldev, param, param_val, ®); |
| else |
| ret = lpc18xx_pconf_set_pin(pctldev, param, param_val, ®, pin_cap); |
| |
| if (ret) |
| return ret; |
| } |
| |
| writel(reg, scu->base + pin_cap->offset); |
| |
| return 0; |
| } |
| |
| static const struct pinconf_ops lpc18xx_pconf_ops = { |
| .is_generic = true, |
| .pin_config_get = lpc18xx_pconf_get, |
| .pin_config_set = lpc18xx_pconf_set, |
| }; |
| |
| static int lpc18xx_pmx_get_funcs_count(struct pinctrl_dev *pctldev) |
| { |
| return ARRAY_SIZE(lpc18xx_function_names); |
| } |
| |
| static const char *lpc18xx_pmx_get_func_name(struct pinctrl_dev *pctldev, |
| unsigned function) |
| { |
| return lpc18xx_function_names[function]; |
| } |
| |
| static int lpc18xx_pmx_get_func_groups(struct pinctrl_dev *pctldev, |
| unsigned function, |
| const char *const **groups, |
| unsigned *const num_groups) |
| { |
| struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); |
| |
| *groups = scu->func[function].groups; |
| *num_groups = scu->func[function].ngroups; |
| |
| return 0; |
| } |
| |
| static int lpc18xx_pmx_set(struct pinctrl_dev *pctldev, unsigned function, |
| unsigned group) |
| { |
| struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); |
| struct lpc18xx_pin_caps *pin = lpc18xx_pins[group].drv_data; |
| int func; |
| u32 reg; |
| |
| /* Dedicated USB1 and I2C0 pins doesn't support muxing */ |
| if (pin->type == TYPE_USB1) { |
| if (function == FUNC_USB1) |
| return 0; |
| |
| goto fail; |
| } |
| |
| if (pin->type == TYPE_I2C0) { |
| if (function == FUNC_I2C0) |
| return 0; |
| |
| goto fail; |
| } |
| |
| if (function == FUNC_ADC && (pin->analog & LPC18XX_ANALOG_PIN)) { |
| u32 offset; |
| |
| writel(LPC18XX_SCU_ANALOG_PIN_CFG, scu->base + pin->offset); |
| |
| if (LPC18XX_ANALOG_ADC(pin->analog) == 0) |
| offset = LPC18XX_SCU_REG_ENAIO0; |
| else |
| offset = LPC18XX_SCU_REG_ENAIO1; |
| |
| reg = readl(scu->base + offset); |
| reg |= pin->analog & LPC18XX_ANALOG_BIT_MASK; |
| writel(reg, scu->base + offset); |
| |
| return 0; |
| } |
| |
| if (function == FUNC_DAC && (pin->analog & LPC18XX_ANALOG_PIN)) { |
| writel(LPC18XX_SCU_ANALOG_PIN_CFG, scu->base + pin->offset); |
| |
| reg = readl(scu->base + LPC18XX_SCU_REG_ENAIO2); |
| reg |= LPC18XX_SCU_REG_ENAIO2_DAC; |
| writel(reg, scu->base + LPC18XX_SCU_REG_ENAIO2); |
| |
| return 0; |
| } |
| |
| for (func = 0; func < LPC18XX_SCU_FUNC_PER_PIN; func++) { |
| if (function == pin->functions[func]) |
| break; |
| } |
| |
| if (func >= LPC18XX_SCU_FUNC_PER_PIN) |
| goto fail; |
| |
| reg = readl(scu->base + pin->offset); |
| reg &= ~LPC18XX_SCU_PIN_MODE_MASK; |
| writel(reg | func, scu->base + pin->offset); |
| |
| return 0; |
| fail: |
| dev_err(pctldev->dev, "Pin %s can't be %s\n", lpc18xx_pins[group].name, |
| lpc18xx_function_names[function]); |
| return -EINVAL; |
| } |
| |
| static const struct pinmux_ops lpc18xx_pmx_ops = { |
| .get_functions_count = lpc18xx_pmx_get_funcs_count, |
| .get_function_name = lpc18xx_pmx_get_func_name, |
| .get_function_groups = lpc18xx_pmx_get_func_groups, |
| .set_mux = lpc18xx_pmx_set, |
| }; |
| |
| static int lpc18xx_pctl_get_groups_count(struct pinctrl_dev *pctldev) |
| { |
| return ARRAY_SIZE(lpc18xx_pins); |
| } |
| |
| static const char *lpc18xx_pctl_get_group_name(struct pinctrl_dev *pctldev, |
| unsigned group) |
| { |
| return lpc18xx_pins[group].name; |
| } |
| |
| static int lpc18xx_pctl_get_group_pins(struct pinctrl_dev *pctldev, |
| unsigned group, |
| const unsigned **pins, |
| unsigned *num_pins) |
| { |
| *pins = &lpc18xx_pins[group].number; |
| *num_pins = 1; |
| |
| return 0; |
| } |
| |
| static const struct pinctrl_ops lpc18xx_pctl_ops = { |
| .get_groups_count = lpc18xx_pctl_get_groups_count, |
| .get_group_name = lpc18xx_pctl_get_group_name, |
| .get_group_pins = lpc18xx_pctl_get_group_pins, |
| .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, |
| .dt_free_map = pinctrl_utils_dt_free_map, |
| }; |
| |
| static struct pinctrl_desc lpc18xx_scu_desc = { |
| .name = "lpc18xx/43xx-scu", |
| .pins = lpc18xx_pins, |
| .npins = ARRAY_SIZE(lpc18xx_pins), |
| .pctlops = &lpc18xx_pctl_ops, |
| .pmxops = &lpc18xx_pmx_ops, |
| .confops = &lpc18xx_pconf_ops, |
| .owner = THIS_MODULE, |
| }; |
| |
| static bool lpc18xx_valid_pin_function(unsigned pin, unsigned function) |
| { |
| struct lpc18xx_pin_caps *p = lpc18xx_pins[pin].drv_data; |
| int i; |
| |
| if (function == FUNC_DAC && p->analog == DAC) |
| return true; |
| |
| if (function == FUNC_ADC && p->analog) |
| return true; |
| |
| if (function == FUNC_I2C0 && p->type == TYPE_I2C0) |
| return true; |
| |
| if (function == FUNC_USB1 && p->type == TYPE_USB1) |
| return true; |
| |
| for (i = 0; i < LPC18XX_SCU_FUNC_PER_PIN; i++) { |
| if (function == p->functions[i]) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static int lpc18xx_create_group_func_map(struct device *dev, |
| struct lpc18xx_scu_data *scu) |
| { |
| u16 pins[ARRAY_SIZE(lpc18xx_pins)]; |
| int func, ngroups, i; |
| |
| for (func = 0; func < FUNC_MAX; ngroups = 0, func++) { |
| |
| for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { |
| if (lpc18xx_valid_pin_function(i, func)) |
| pins[ngroups++] = i; |
| } |
| |
| scu->func[func].ngroups = ngroups; |
| scu->func[func].groups = devm_kzalloc(dev, ngroups * |
| sizeof(char *), GFP_KERNEL); |
| if (!scu->func[func].groups) |
| return -ENOMEM; |
| |
| for (i = 0; i < ngroups; i++) |
| scu->func[func].groups[i] = lpc18xx_pins[pins[i]].name; |
| } |
| |
| return 0; |
| } |
| |
| static int lpc18xx_scu_probe(struct platform_device *pdev) |
| { |
| struct lpc18xx_scu_data *scu; |
| struct resource *res; |
| int ret; |
| |
| scu = devm_kzalloc(&pdev->dev, sizeof(*scu), GFP_KERNEL); |
| if (!scu) |
| return -ENOMEM; |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| scu->base = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(scu->base)) |
| return PTR_ERR(scu->base); |
| |
| scu->clk = devm_clk_get(&pdev->dev, NULL); |
| if (IS_ERR(scu->clk)) { |
| dev_err(&pdev->dev, "Input clock not found.\n"); |
| return PTR_ERR(scu->clk); |
| } |
| |
| ret = lpc18xx_create_group_func_map(&pdev->dev, scu); |
| if (ret) { |
| dev_err(&pdev->dev, "Unable to create group func map.\n"); |
| return ret; |
| } |
| |
| ret = clk_prepare_enable(scu->clk); |
| if (ret) { |
| dev_err(&pdev->dev, "Unable to enable clock.\n"); |
| return ret; |
| } |
| |
| platform_set_drvdata(pdev, scu); |
| |
| scu->pctl = pinctrl_register(&lpc18xx_scu_desc, &pdev->dev, scu); |
| if (IS_ERR(scu->pctl)) { |
| dev_err(&pdev->dev, "Could not register pinctrl driver\n"); |
| clk_disable_unprepare(scu->clk); |
| return PTR_ERR(scu->pctl); |
| } |
| |
| return 0; |
| } |
| |
| static int lpc18xx_scu_remove(struct platform_device *pdev) |
| { |
| struct lpc18xx_scu_data *scu = platform_get_drvdata(pdev); |
| |
| pinctrl_unregister(scu->pctl); |
| clk_disable_unprepare(scu->clk); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id lpc18xx_scu_match[] = { |
| { .compatible = "nxp,lpc1850-scu" }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, lpc18xx_scu_match); |
| |
| static struct platform_driver lpc18xx_scu_driver = { |
| .probe = lpc18xx_scu_probe, |
| .remove = lpc18xx_scu_remove, |
| .driver = { |
| .name = "lpc18xx-scu", |
| .of_match_table = lpc18xx_scu_match, |
| }, |
| }; |
| module_platform_driver(lpc18xx_scu_driver); |
| |
| MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>"); |
| MODULE_DESCRIPTION("Pinctrl driver for NXP LPC18xx/43xx SCU"); |
| MODULE_LICENSE("GPL v2"); |
