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linuxdebug/drivers/pinctrl/pinctrl-lpc18xx.c

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null pointer error
2024-07-16 15:50:57 +02:00
/*
* 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/init.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_USB1_EPD BIT(2)
#define LPC18XX_SCU_USB1_EPWR BIT(4)
#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 SCU pin interrupt select registers */
#define LPC18XX_SCU_PINTSEL0 0xe00
#define LPC18XX_SCU_PINTSEL1 0xe04
#define LPC18XX_SCU_PINTSEL_VAL_MASK 0xff
#define LPC18XX_SCU_PINTSEL_PORT_SHIFT 5
#define LPC18XX_SCU_IRQ_PER_PINTSEL 4
#define LPC18XX_GPIO_PINS_PER_PORT 32
#define LPC18XX_GPIO_PIN_INT_MAX 8
#define LPC18XX_SCU_PINTSEL_VAL(val, n) \
((val) << (((n) % LPC18XX_SCU_IRQ_PER_PINTSEL) * 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),
};
/* PIN_CONFIG_GPIO_PIN_INT: route gpio to the gpio pin interrupt controller */
#define PIN_CONFIG_GPIO_PIN_INT (PIN_CONFIG_END + 1)
static const struct pinconf_generic_params lpc18xx_params[] = {
{"nxp,gpio-pin-interrupt", PIN_CONFIG_GPIO_PIN_INT, 0},
};
#ifdef CONFIG_DEBUG_FS
static const struct pin_config_item lpc18xx_conf_items[ARRAY_SIZE(lpc18xx_params)] = {
PCONFDUMP(PIN_CONFIG_GPIO_PIN_INT, "gpio pin int", NULL, true),
};
#endif
static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg)
{
switch (param) {
case PIN_CONFIG_MODE_LOW_POWER:
if (reg & LPC18XX_SCU_USB1_EPWR)
*arg = 0;
else
*arg = 1;
break;
case PIN_CONFIG_BIAS_DISABLE:
if (reg & LPC18XX_SCU_USB1_EPD)
return -EINVAL;
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
if (reg & LPC18XX_SCU_USB1_EPD)
*arg = 1;
else
return -EINVAL;
break;
default:
return -ENOTSUPP;
}
return 0;
}
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_pin_to_gpio(struct pinctrl_dev *pctldev, unsigned pin)
{
struct pinctrl_gpio_range *range;
range = pinctrl_find_gpio_range_from_pin_nolock(pctldev, pin);
if (!range)
return -EINVAL;
return pin - range->pin_base + range->base;
}
static int lpc18xx_get_pintsel(void __iomem *addr, u32 val, int *arg)
{
u32 reg_val;
int i;
reg_val = readl(addr);
for (i = 0; i < LPC18XX_SCU_IRQ_PER_PINTSEL; i++) {
if ((reg_val & LPC18XX_SCU_PINTSEL_VAL_MASK) == val)
return 0;
reg_val >>= BITS_PER_BYTE;
*arg += 1;
}
return -EINVAL;
}
static u32 lpc18xx_gpio_to_pintsel_val(int gpio)
{
unsigned int gpio_port, gpio_pin;
gpio_port = gpio / LPC18XX_GPIO_PINS_PER_PORT;
gpio_pin = gpio % LPC18XX_GPIO_PINS_PER_PORT;
return gpio_pin | (gpio_port << LPC18XX_SCU_PINTSEL_PORT_SHIFT);
}
static int lpc18xx_pconf_get_gpio_pin_int(struct pinctrl_dev *pctldev,
int *arg, unsigned pin)
{
struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
int gpio, ret;
u32 val;
gpio = lpc18xx_pin_to_gpio(pctldev, pin);
if (gpio < 0)
return -ENOTSUPP;
val = lpc18xx_gpio_to_pintsel_val(gpio);
/*
* Check if this pin has been enabled as a interrupt in any of the two
* PINTSEL registers. *arg indicates which interrupt number (0-7).
*/
*arg = 0;
ret = lpc18xx_get_pintsel(scu->base + LPC18XX_SCU_PINTSEL0, val, arg);
if (ret == 0)
return ret;
return lpc18xx_get_pintsel(scu->base + LPC18XX_SCU_PINTSEL1, val, arg);
}
static int lpc18xx_pconf_get_pin(struct pinctrl_dev *pctldev, unsigned param,
int *arg, u32 reg, unsigned pin,
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;
fallthrough;
case 2: *arg += 5;
fallthrough;
case 1: *arg += 3;
fallthrough;
case 0: *arg += 4;
}
break;
case PIN_CONFIG_GPIO_PIN_INT:
return lpc18xx_pconf_get_gpio_pin_int(pctldev, arg, pin);
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(pctldev, param, &arg, reg, pin, 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,
u32 param_val, u32 *reg)
{
switch (param) {
case PIN_CONFIG_MODE_LOW_POWER:
if (param_val)
*reg &= ~LPC18XX_SCU_USB1_EPWR;
else
*reg |= LPC18XX_SCU_USB1_EPWR;
break;
case PIN_CONFIG_BIAS_DISABLE:
*reg &= ~LPC18XX_SCU_USB1_EPD;
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
*reg |= LPC18XX_SCU_USB1_EPD;
break;
default:
dev_err(pctldev->dev, "Property not supported\n");
return -ENOTSUPP;
}
return 0;
}
static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev,
enum pin_config_param param,
u32 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_gpio_pin_int(struct pinctrl_dev *pctldev,
u32 param_val, unsigned pin)
{
struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
u32 val, reg_val, reg_offset = LPC18XX_SCU_PINTSEL0;
int gpio;
if (param_val >= LPC18XX_GPIO_PIN_INT_MAX)
return -EINVAL;
gpio = lpc18xx_pin_to_gpio(pctldev, pin);
if (gpio < 0)
return -ENOTSUPP;
val = lpc18xx_gpio_to_pintsel_val(gpio);
reg_offset += (param_val / LPC18XX_SCU_IRQ_PER_PINTSEL) * sizeof(u32);
reg_val = readl(scu->base + reg_offset);
reg_val &= ~LPC18XX_SCU_PINTSEL_VAL(LPC18XX_SCU_PINTSEL_VAL_MASK, param_val);
reg_val |= LPC18XX_SCU_PINTSEL_VAL(val, param_val);
writel(reg_val, scu->base + reg_offset);
return 0;
}
static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, unsigned param,
u32 param_val, u32 *reg, unsigned pin,
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;
fallthrough;
case 14: param_val -= 5;
fallthrough;
case 8: param_val -= 3;
fallthrough;
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;
case PIN_CONFIG_GPIO_PIN_INT:
return lpc18xx_pconf_set_gpio_pin_int(pctldev, param_val, pin);
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;
u32 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, &reg, pin);
else if (pin_cap->type == TYPE_USB1)
ret = lpc18xx_pconf_set_usb1(pctldev, param, param_val, &reg);
else
ret = lpc18xx_pconf_set_pin(pctldev, param, param_val, &reg, pin, 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_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,
.num_custom_params = ARRAY_SIZE(lpc18xx_params),
.custom_params = lpc18xx_params,
#ifdef CONFIG_DEBUG_FS
.custom_conf_items = lpc18xx_conf_items,
#endif
.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; func++) {
for (ngroups = 0, 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_kcalloc(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;
int ret;
scu = devm_kzalloc(&pdev->dev, sizeof(*scu), GFP_KERNEL);
if (!scu)
return -ENOMEM;
scu->base = devm_platform_ioremap_resource(pdev, 0);
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 = devm_pinctrl_register(&pdev->dev, &lpc18xx_scu_desc, 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 const struct of_device_id lpc18xx_scu_match[] = {
{ .compatible = "nxp,lpc1850-scu" },
{},
};
static struct platform_driver lpc18xx_scu_driver = {
.probe = lpc18xx_scu_probe,
.driver = {
.name = "lpc18xx-scu",
.of_match_table = lpc18xx_scu_match,
.suppress_bind_attrs = true,
},
};
builtin_platform_driver(lpc18xx_scu_driver);