1 /* 2 * Pinctrl driver for NXP LPC18xx/LPC43xx System Control Unit (SCU) 3 * 4 * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com> 5 * 6 * This file is licensed under the terms of the GNU General Public 7 * License version 2. This program is licensed "as is" without any 8 * warranty of any kind, whether express or implied. 9 */ 10 11 #include <linux/bitops.h> 12 #include <linux/clk.h> 13 #include <linux/io.h> 14 #include <linux/init.h> 15 #include <linux/of.h> 16 #include <linux/of_device.h> 17 #include <linux/pinctrl/pinctrl.h> 18 #include <linux/pinctrl/pinmux.h> 19 #include <linux/pinctrl/pinconf-generic.h> 20 21 #include "core.h" 22 #include "pinctrl-utils.h" 23 24 /* LPC18XX SCU analog function registers */ 25 #define LPC18XX_SCU_REG_ENAIO0 0xc88 26 #define LPC18XX_SCU_REG_ENAIO1 0xc8c 27 #define LPC18XX_SCU_REG_ENAIO2 0xc90 28 #define LPC18XX_SCU_REG_ENAIO2_DAC BIT(0) 29 30 /* LPC18XX SCU pin register definitions */ 31 #define LPC18XX_SCU_PIN_MODE_MASK 0x7 32 #define LPC18XX_SCU_PIN_EPD BIT(3) 33 #define LPC18XX_SCU_PIN_EPUN BIT(4) 34 #define LPC18XX_SCU_PIN_EHS BIT(5) 35 #define LPC18XX_SCU_PIN_EZI BIT(6) 36 #define LPC18XX_SCU_PIN_ZIF BIT(7) 37 #define LPC18XX_SCU_PIN_EHD_MASK 0x300 38 #define LPC18XX_SCU_PIN_EHD_POS 8 39 40 #define LPC18XX_SCU_USB1_EPD BIT(2) 41 #define LPC18XX_SCU_USB1_EPWR BIT(4) 42 43 #define LPC18XX_SCU_I2C0_EFP BIT(0) 44 #define LPC18XX_SCU_I2C0_EHD BIT(2) 45 #define LPC18XX_SCU_I2C0_EZI BIT(3) 46 #define LPC18XX_SCU_I2C0_ZIF BIT(7) 47 #define LPC18XX_SCU_I2C0_SCL_SHIFT 0 48 #define LPC18XX_SCU_I2C0_SDA_SHIFT 8 49 50 #define LPC18XX_SCU_FUNC_PER_PIN 8 51 52 /* LPC18XX SCU pin interrupt select registers */ 53 #define LPC18XX_SCU_PINTSEL0 0xe00 54 #define LPC18XX_SCU_PINTSEL1 0xe04 55 #define LPC18XX_SCU_PINTSEL_VAL_MASK 0xff 56 #define LPC18XX_SCU_PINTSEL_PORT_SHIFT 5 57 #define LPC18XX_SCU_IRQ_PER_PINTSEL 4 58 #define LPC18XX_GPIO_PINS_PER_PORT 32 59 #define LPC18XX_GPIO_PIN_INT_MAX 8 60 61 #define LPC18XX_SCU_PINTSEL_VAL(val, n) \ 62 ((val) << (((n) % LPC18XX_SCU_IRQ_PER_PINTSEL) * 8)) 63 64 /* LPC18xx pin types */ 65 enum { 66 TYPE_ND, /* Normal-drive */ 67 TYPE_HD, /* High-drive */ 68 TYPE_HS, /* High-speed */ 69 TYPE_I2C0, 70 TYPE_USB1, 71 }; 72 73 /* LPC18xx pin functions */ 74 enum { 75 FUNC_R, /* Reserved */ 76 FUNC_ADC, 77 FUNC_ADCTRIG, 78 FUNC_CAN0, 79 FUNC_CAN1, 80 FUNC_CGU_OUT, 81 FUNC_CLKIN, 82 FUNC_CLKOUT, 83 FUNC_CTIN, 84 FUNC_CTOUT, 85 FUNC_DAC, 86 FUNC_EMC, 87 FUNC_EMC_ALT, 88 FUNC_ENET, 89 FUNC_ENET_ALT, 90 FUNC_GPIO, 91 FUNC_I2C0, 92 FUNC_I2C1, 93 FUNC_I2S0_RX_MCLK, 94 FUNC_I2S0_RX_SCK, 95 FUNC_I2S0_RX_SDA, 96 FUNC_I2S0_RX_WS, 97 FUNC_I2S0_TX_MCLK, 98 FUNC_I2S0_TX_SCK, 99 FUNC_I2S0_TX_SDA, 100 FUNC_I2S0_TX_WS, 101 FUNC_I2S1, 102 FUNC_LCD, 103 FUNC_LCD_ALT, 104 FUNC_MCTRL, 105 FUNC_NMI, 106 FUNC_QEI, 107 FUNC_SDMMC, 108 FUNC_SGPIO, 109 FUNC_SPI, 110 FUNC_SPIFI, 111 FUNC_SSP0, 112 FUNC_SSP0_ALT, 113 FUNC_SSP1, 114 FUNC_TIMER0, 115 FUNC_TIMER1, 116 FUNC_TIMER2, 117 FUNC_TIMER3, 118 FUNC_TRACE, 119 FUNC_UART0, 120 FUNC_UART1, 121 FUNC_UART2, 122 FUNC_UART3, 123 FUNC_USB0, 124 FUNC_USB1, 125 FUNC_MAX 126 }; 127 128 static const char *const lpc18xx_function_names[] = { 129 [FUNC_R] = "reserved", 130 [FUNC_ADC] = "adc", 131 [FUNC_ADCTRIG] = "adctrig", 132 [FUNC_CAN0] = "can0", 133 [FUNC_CAN1] = "can1", 134 [FUNC_CGU_OUT] = "cgu_out", 135 [FUNC_CLKIN] = "clkin", 136 [FUNC_CLKOUT] = "clkout", 137 [FUNC_CTIN] = "ctin", 138 [FUNC_CTOUT] = "ctout", 139 [FUNC_DAC] = "dac", 140 [FUNC_EMC] = "emc", 141 [FUNC_EMC_ALT] = "emc_alt", 142 [FUNC_ENET] = "enet", 143 [FUNC_ENET_ALT] = "enet_alt", 144 [FUNC_GPIO] = "gpio", 145 [FUNC_I2C0] = "i2c0", 146 [FUNC_I2C1] = "i2c1", 147 [FUNC_I2S0_RX_MCLK] = "i2s0_rx_mclk", 148 [FUNC_I2S0_RX_SCK] = "i2s0_rx_sck", 149 [FUNC_I2S0_RX_SDA] = "i2s0_rx_sda", 150 [FUNC_I2S0_RX_WS] = "i2s0_rx_ws", 151 [FUNC_I2S0_TX_MCLK] = "i2s0_tx_mclk", 152 [FUNC_I2S0_TX_SCK] = "i2s0_tx_sck", 153 [FUNC_I2S0_TX_SDA] = "i2s0_tx_sda", 154 [FUNC_I2S0_TX_WS] = "i2s0_tx_ws", 155 [FUNC_I2S1] = "i2s1", 156 [FUNC_LCD] = "lcd", 157 [FUNC_LCD_ALT] = "lcd_alt", 158 [FUNC_MCTRL] = "mctrl", 159 [FUNC_NMI] = "nmi", 160 [FUNC_QEI] = "qei", 161 [FUNC_SDMMC] = "sdmmc", 162 [FUNC_SGPIO] = "sgpio", 163 [FUNC_SPI] = "spi", 164 [FUNC_SPIFI] = "spifi", 165 [FUNC_SSP0] = "ssp0", 166 [FUNC_SSP0_ALT] = "ssp0_alt", 167 [FUNC_SSP1] = "ssp1", 168 [FUNC_TIMER0] = "timer0", 169 [FUNC_TIMER1] = "timer1", 170 [FUNC_TIMER2] = "timer2", 171 [FUNC_TIMER3] = "timer3", 172 [FUNC_TRACE] = "trace", 173 [FUNC_UART0] = "uart0", 174 [FUNC_UART1] = "uart1", 175 [FUNC_UART2] = "uart2", 176 [FUNC_UART3] = "uart3", 177 [FUNC_USB0] = "usb0", 178 [FUNC_USB1] = "usb1", 179 }; 180 181 struct lpc18xx_pmx_func { 182 const char **groups; 183 unsigned ngroups; 184 }; 185 186 struct lpc18xx_scu_data { 187 struct pinctrl_dev *pctl; 188 void __iomem *base; 189 struct clk *clk; 190 struct lpc18xx_pmx_func func[FUNC_MAX]; 191 }; 192 193 struct lpc18xx_pin_caps { 194 unsigned int offset; 195 unsigned char functions[LPC18XX_SCU_FUNC_PER_PIN]; 196 unsigned char analog; 197 unsigned char type; 198 }; 199 200 /* Analog pins are required to have both bias and input disabled */ 201 #define LPC18XX_SCU_ANALOG_PIN_CFG 0x10 202 203 /* Macros to maniupluate analog member in lpc18xx_pin_caps */ 204 #define LPC18XX_ANALOG_PIN BIT(7) 205 #define LPC18XX_ANALOG_ADC(a) ((a >> 5) & 0x3) 206 #define LPC18XX_ANALOG_BIT_MASK 0x1f 207 #define ADC0 (LPC18XX_ANALOG_PIN | (0x00 << 5)) 208 #define ADC1 (LPC18XX_ANALOG_PIN | (0x01 << 5)) 209 #define DAC LPC18XX_ANALOG_PIN 210 211 #define LPC_P(port, pin, f0, f1, f2, f3, f4, f5, f6, f7, a, t) \ 212 static struct lpc18xx_pin_caps lpc18xx_pin_p##port##_##pin = { \ 213 .offset = 0x##port * 32 * 4 + pin * 4, \ 214 .functions = { \ 215 FUNC_##f0, FUNC_##f1, FUNC_##f2, \ 216 FUNC_##f3, FUNC_##f4, FUNC_##f5, \ 217 FUNC_##f6, FUNC_##f7, \ 218 }, \ 219 .analog = a, \ 220 .type = TYPE_##t, \ 221 } 222 223 #define LPC_N(pname, off, f0, f1, f2, f3, f4, f5, f6, f7, a, t) \ 224 static struct lpc18xx_pin_caps lpc18xx_pin_##pname = { \ 225 .offset = off, \ 226 .functions = { \ 227 FUNC_##f0, FUNC_##f1, FUNC_##f2, \ 228 FUNC_##f3, FUNC_##f4, FUNC_##f5, \ 229 FUNC_##f6, FUNC_##f7, \ 230 }, \ 231 .analog = a, \ 232 .type = TYPE_##t, \ 233 } 234 235 236 /* Pinmuxing table taken from data sheet */ 237 /* Pin FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */ 238 LPC_P(0,0, GPIO, SSP1, ENET, SGPIO, R, R, I2S0_TX_WS,I2S1, 0, ND); 239 LPC_P(0,1, GPIO, SSP1,ENET_ALT,SGPIO, R, R, ENET, I2S1, 0, ND); 240 LPC_P(1,0, GPIO, CTIN, EMC, R, R, SSP0, SGPIO, R, 0, ND); 241 LPC_P(1,1, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND); 242 LPC_P(1,2, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND); 243 LPC_P(1,3, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND); 244 LPC_P(1,4, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND); 245 LPC_P(1,5, GPIO, CTOUT, R, EMC, USB0, SSP1, SGPIO, SDMMC, 0, ND); 246 LPC_P(1,6, GPIO, CTIN, R, EMC, R, R, SGPIO, SDMMC, 0, ND); 247 LPC_P(1,7, GPIO, UART1, CTOUT, EMC, USB0, R, R, R, 0, ND); 248 LPC_P(1,8, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); 249 LPC_P(1,9, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); 250 LPC_P(1,10, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); 251 LPC_P(1,11, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND); 252 LPC_P(1,12, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND); 253 LPC_P(1,13, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND); 254 LPC_P(1,14, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, R, 0, ND); 255 LPC_P(1,15, GPIO, UART2, SGPIO, ENET, TIMER0, R, R, R, 0, ND); 256 LPC_P(1,16, GPIO, UART2, SGPIO,ENET_ALT,TIMER0, R, R, ENET, 0, ND); 257 LPC_P(1,17, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, HD); 258 LPC_P(1,18, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, ND); 259 LPC_P(1,19, ENET, SSP1, R, R, CLKOUT, R, I2S0_RX_MCLK,I2S1, 0, ND); 260 LPC_P(1,20, GPIO, SSP1, R, ENET, TIMER0, R, SGPIO, R, 0, ND); 261 LPC_P(2,0, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, ENET, 0, ND); 262 LPC_P(2,1, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, R, 0, ND); 263 LPC_P(2,2, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND); 264 LPC_P(2,3, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD); 265 LPC_P(2,4, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD); 266 LPC_P(2,5, SGPIO, CTIN, USB1, ADCTRIG, GPIO, R, TIMER3, USB0, 0, HD); 267 LPC_P(2,6, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND); 268 LPC_P(2,7, GPIO, CTOUT, UART3, EMC, R, R, TIMER3, R, 0, ND); 269 LPC_P(2,8, SGPIO, CTOUT, UART3, EMC, GPIO, R, R, R, 0, ND); 270 LPC_P(2,9, GPIO, CTOUT, UART3, EMC, R, R, R, R, 0, ND); 271 LPC_P(2,10, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND); 272 LPC_P(2,11, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND); 273 LPC_P(2,12, GPIO, CTOUT, R, EMC, R, R, R, UART2, 0, ND); 274 LPC_P(2,13, GPIO, CTIN, R, EMC, R, R, R, UART2, 0, ND); 275 LPC_P(3,0, I2S0_RX_SCK, I2S0_RX_MCLK, I2S0_TX_SCK, I2S0_TX_MCLK,SSP0,R,R,R, 0, ND); 276 LPC_P(3,1, I2S0_TX_WS, I2S0_RX_WS,CAN0,USB1,GPIO, R, LCD, R, 0, ND); 277 LPC_P(3,2, I2S0_TX_SDA, I2S0_RX_SDA,CAN0,USB1,GPIO, R, LCD, R, 0, ND); 278 LPC_P(3,3, R, SPI, SSP0, SPIFI, CGU_OUT,R, I2S0_TX_MCLK, I2S1, 0, HS); 279 LPC_P(3,4, GPIO, R, R, SPIFI, UART1, I2S0_TX_WS, I2S1, LCD, 0, ND); 280 LPC_P(3,5, GPIO, R, R, SPIFI, UART1, I2S0_TX_SDA,I2S1, LCD, 0, ND); 281 LPC_P(3,6, GPIO, SPI, SSP0, SPIFI, R, SSP0_ALT, R, R, 0, ND); 282 LPC_P(3,7, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND); 283 LPC_P(3,8, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND); 284 LPC_P(4,0, GPIO, MCTRL, NMI, R, R, LCD, UART3, R, 0, ND); 285 LPC_P(4,1, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, ENET, ADC0|1, ND); 286 LPC_P(4,2, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, 0, ND); 287 LPC_P(4,3, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, ADC0|0, ND); 288 LPC_P(4,4, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, DAC, ND); 289 LPC_P(4,5, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND); 290 LPC_P(4,6, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND); 291 LPC_P(4,7, LCD, CLKIN, R, R, R, R, I2S1,I2S0_TX_SCK, 0, ND); 292 LPC_P(4,8, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND); 293 LPC_P(4,9, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND); 294 LPC_P(4,10, R, CTIN, LCD, R, GPIO, LCD_ALT, R, SGPIO, 0, ND); 295 LPC_P(5,0, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 296 LPC_P(5,1, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 297 LPC_P(5,2, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 298 LPC_P(5,3, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 299 LPC_P(5,4, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 300 LPC_P(5,5, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 301 LPC_P(5,6, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 302 LPC_P(5,7, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND); 303 LPC_P(6,0, R, I2S0_RX_MCLK,R, R, I2S0_RX_SCK, R, R, R, 0, ND); 304 LPC_P(6,1, GPIO, EMC, UART0, I2S0_RX_WS, R, TIMER2, R, R, 0, ND); 305 LPC_P(6,2, GPIO, EMC, UART0, I2S0_RX_SDA, R, TIMER2, R, R, 0, ND); 306 LPC_P(6,3, GPIO, USB0, SGPIO, EMC, R, TIMER2, R, R, 0, ND); 307 LPC_P(6,4, GPIO, CTIN, UART0, EMC, R, R, R, R, 0, ND); 308 LPC_P(6,5, GPIO, CTOUT, UART0, EMC, R, R, R, R, 0, ND); 309 LPC_P(6,6, GPIO, EMC, SGPIO, USB0, R, TIMER2, R, R, 0, ND); 310 LPC_P(6,7, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND); 311 LPC_P(6,8, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND); 312 LPC_P(6,9, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND); 313 LPC_P(6,10, GPIO, MCTRL, R, EMC, R, R, R, R, 0, ND); 314 LPC_P(6,11, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND); 315 LPC_P(6,12, GPIO, CTOUT, R, EMC, R, R, R, R, 0, ND); 316 LPC_P(7,0, GPIO, CTOUT, R, LCD, R, R, R, SGPIO, 0, ND); 317 LPC_P(7,1, GPIO, CTOUT,I2S0_TX_WS,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND); 318 LPC_P(7,2, GPIO, CTIN,I2S0_TX_SDA,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND); 319 LPC_P(7,3, GPIO, CTIN, R, LCD,LCD_ALT, R, R, R, 0, ND); 320 LPC_P(7,4, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|4, ND); 321 LPC_P(7,5, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|3, ND); 322 LPC_P(7,6, GPIO, CTOUT, R, LCD, R, TRACE, R, R, 0, ND); 323 LPC_P(7,7, GPIO, CTOUT, R, LCD, R, TRACE, ENET, SGPIO, ADC1|6, ND); 324 LPC_P(8,0, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD); 325 LPC_P(8,1, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD); 326 LPC_P(8,2, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD); 327 LPC_P(8,3, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); 328 LPC_P(8,4, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); 329 LPC_P(8,5, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); 330 LPC_P(8,6, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); 331 LPC_P(8,7, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND); 332 LPC_P(8,8, R, USB1, R, R, R, R,CGU_OUT, I2S1, 0, ND); 333 LPC_P(9,0, GPIO, MCTRL, R, R, R, ENET, SGPIO, SSP0, 0, ND); 334 LPC_P(9,1, GPIO, MCTRL, R, R, I2S0_TX_WS,ENET, SGPIO, SSP0, 0, ND); 335 LPC_P(9,2, GPIO, MCTRL, R, R, I2S0_TX_SDA,ENET,SGPIO, SSP0, 0, ND); 336 LPC_P(9,3, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART3, 0, ND); 337 LPC_P(9,4, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART3, 0, ND); 338 LPC_P(9,5, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART0, 0, ND); 339 LPC_P(9,6, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART0, 0, ND); 340 LPC_P(a,0, R, R, R, R, R, I2S1, CGU_OUT, R, 0, ND); 341 LPC_P(a,1, GPIO, QEI, R, UART2, R, R, R, R, 0, HD); 342 LPC_P(a,2, GPIO, QEI, R, UART2, R, R, R, R, 0, HD); 343 LPC_P(a,3, GPIO, QEI, R, R, R, R, R, R, 0, HD); 344 LPC_P(a,4, R, CTOUT, R, EMC, GPIO, R, R, R, 0, ND); 345 LPC_P(b,0, R, CTOUT, LCD, R, GPIO, R, R, R, 0, ND); 346 LPC_P(b,1, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND); 347 LPC_P(b,2, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND); 348 LPC_P(b,3, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND); 349 LPC_P(b,4, R, USB1, LCD, R, GPIO, CTIN, R, R, 0, ND); 350 LPC_P(b,5, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, 0, ND); 351 LPC_P(b,6, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, ADC0|6, ND); 352 LPC_P(c,0, R, USB1, R, ENET, LCD, R, R, SDMMC, ADC1|1, ND); 353 LPC_P(c,1, USB1, R, UART1, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 354 LPC_P(c,2, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, 0, ND); 355 LPC_P(c,3, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, ADC1|0, ND); 356 LPC_P(c,4, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 357 LPC_P(c,5, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 358 LPC_P(c,6, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 359 LPC_P(c,7, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 360 LPC_P(c,8, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 361 LPC_P(c,9, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND); 362 LPC_P(c,10, R, USB1, UART1, R, GPIO, R, TIMER3, SDMMC, 0, ND); 363 LPC_P(c,11, R, USB1, UART1, R, GPIO, R, R, SDMMC, 0, ND); 364 LPC_P(c,12, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_SDA,SDMMC, 0, ND); 365 LPC_P(c,13, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_WS, SDMMC, 0, ND); 366 LPC_P(c,14, R, R, UART1, R, GPIO, SGPIO, ENET, SDMMC, 0, ND); 367 LPC_P(d,0, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 368 LPC_P(d,1, R, R, EMC, R, GPIO, SDMMC, R, SGPIO, 0, ND); 369 LPC_P(d,2, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 370 LPC_P(d,3, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 371 LPC_P(d,4, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 372 LPC_P(d,5, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 373 LPC_P(d,6, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 374 LPC_P(d,7, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND); 375 LPC_P(d,8, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND); 376 LPC_P(d,9, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND); 377 LPC_P(d,10, R, CTIN, EMC, R, GPIO, R, R, R, 0, ND); 378 LPC_P(d,11, R, R, EMC, R, GPIO, USB1, CTOUT, R, 0, ND); 379 LPC_P(d,12, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND); 380 LPC_P(d,13, R, CTIN, EMC, R, GPIO, R, CTOUT, R, 0, ND); 381 LPC_P(d,14, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND); 382 LPC_P(d,15, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND); 383 LPC_P(d,16, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND); 384 LPC_P(e,0, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND); 385 LPC_P(e,1, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND); 386 LPC_P(e,2,ADCTRIG, CAN0, R, EMC, GPIO, R, R, R, 0, ND); 387 LPC_P(e,3, R, CAN0,ADCTRIG, EMC, GPIO, R, R, R, 0, ND); 388 LPC_P(e,4, R, NMI, R, EMC, GPIO, R, R, R, 0, ND); 389 LPC_P(e,5, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); 390 LPC_P(e,6, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); 391 LPC_P(e,7, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); 392 LPC_P(e,8, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); 393 LPC_P(e,9, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND); 394 LPC_P(e,10, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND); 395 LPC_P(e,11, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); 396 LPC_P(e,12, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND); 397 LPC_P(e,13, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND); 398 LPC_P(e,14, R, R, R, EMC, GPIO, R, R, R, 0, ND); 399 LPC_P(e,15, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND); 400 LPC_P(f,0, SSP0, CLKIN, R, R, R, R, R, I2S1, 0, ND); 401 LPC_P(f,1, R, R, SSP0, R, GPIO, R, SGPIO, R, 0, ND); 402 LPC_P(f,2, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND); 403 LPC_P(f,3, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND); 404 LPC_P(f,4, SSP1, CLKIN, TRACE, R, R, R, I2S0_TX_MCLK,I2S0_RX_SCK, 0, ND); 405 LPC_P(f,5, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, R, ADC1|4, ND); 406 LPC_P(f,6, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|3, ND); 407 LPC_P(f,7, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|7, ND); 408 LPC_P(f,8, R, UART0, CTIN, TRACE, GPIO, R, SGPIO, R, ADC0|2, ND); 409 LPC_P(f,9, R, UART0, CTOUT, R, GPIO, R, SGPIO, R, ADC1|2, ND); 410 LPC_P(f,10, R, UART0, R, R, GPIO, R, SDMMC, R, ADC0|5, ND); 411 LPC_P(f,11, R, UART0, R, R, GPIO, R, SDMMC, R, ADC1|5, ND); 412 413 /* Pin Offset FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */ 414 LPC_N(clk0, 0xc00, EMC, CLKOUT, R, R, SDMMC, EMC_ALT, SSP1, ENET, 0, HS); 415 LPC_N(clk1, 0xc04, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS); 416 LPC_N(clk2, 0xc08, EMC, CLKOUT, R, R, SDMMC, EMC_ALT,I2S0_TX_MCLK,I2S1, 0, HS); 417 LPC_N(clk3, 0xc0c, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS); 418 LPC_N(usb1_dm, 0xc80, R, R, R, R, R, R, R, R, 0, USB1); 419 LPC_N(usb1_dp, 0xc80, R, R, R, R, R, R, R, R, 0, USB1); 420 LPC_N(i2c0_scl, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0); 421 LPC_N(i2c0_sda, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0); 422 423 #define LPC18XX_PIN_P(port, pin) { \ 424 .number = 0x##port * 32 + pin, \ 425 .name = "p"#port"_"#pin, \ 426 .drv_data = &lpc18xx_pin_p##port##_##pin \ 427 } 428 429 /* Pin numbers for special pins */ 430 enum { 431 PIN_CLK0 = 600, 432 PIN_CLK1, 433 PIN_CLK2, 434 PIN_CLK3, 435 PIN_USB1_DM, 436 PIN_USB1_DP, 437 PIN_I2C0_SCL, 438 PIN_I2C0_SDA, 439 }; 440 441 #define LPC18XX_PIN(pname, n) { \ 442 .number = n, \ 443 .name = #pname, \ 444 .drv_data = &lpc18xx_pin_##pname \ 445 } 446 447 static const struct pinctrl_pin_desc lpc18xx_pins[] = { 448 LPC18XX_PIN_P(0,0), 449 LPC18XX_PIN_P(0,1), 450 LPC18XX_PIN_P(1,0), 451 LPC18XX_PIN_P(1,1), 452 LPC18XX_PIN_P(1,2), 453 LPC18XX_PIN_P(1,3), 454 LPC18XX_PIN_P(1,4), 455 LPC18XX_PIN_P(1,5), 456 LPC18XX_PIN_P(1,6), 457 LPC18XX_PIN_P(1,7), 458 LPC18XX_PIN_P(1,8), 459 LPC18XX_PIN_P(1,9), 460 LPC18XX_PIN_P(1,10), 461 LPC18XX_PIN_P(1,11), 462 LPC18XX_PIN_P(1,12), 463 LPC18XX_PIN_P(1,13), 464 LPC18XX_PIN_P(1,14), 465 LPC18XX_PIN_P(1,15), 466 LPC18XX_PIN_P(1,16), 467 LPC18XX_PIN_P(1,17), 468 LPC18XX_PIN_P(1,18), 469 LPC18XX_PIN_P(1,19), 470 LPC18XX_PIN_P(1,20), 471 LPC18XX_PIN_P(2,0), 472 LPC18XX_PIN_P(2,1), 473 LPC18XX_PIN_P(2,2), 474 LPC18XX_PIN_P(2,3), 475 LPC18XX_PIN_P(2,4), 476 LPC18XX_PIN_P(2,5), 477 LPC18XX_PIN_P(2,6), 478 LPC18XX_PIN_P(2,7), 479 LPC18XX_PIN_P(2,8), 480 LPC18XX_PIN_P(2,9), 481 LPC18XX_PIN_P(2,10), 482 LPC18XX_PIN_P(2,11), 483 LPC18XX_PIN_P(2,12), 484 LPC18XX_PIN_P(2,13), 485 LPC18XX_PIN_P(3,0), 486 LPC18XX_PIN_P(3,1), 487 LPC18XX_PIN_P(3,2), 488 LPC18XX_PIN_P(3,3), 489 LPC18XX_PIN_P(3,4), 490 LPC18XX_PIN_P(3,5), 491 LPC18XX_PIN_P(3,6), 492 LPC18XX_PIN_P(3,7), 493 LPC18XX_PIN_P(3,8), 494 LPC18XX_PIN_P(4,0), 495 LPC18XX_PIN_P(4,1), 496 LPC18XX_PIN_P(4,2), 497 LPC18XX_PIN_P(4,3), 498 LPC18XX_PIN_P(4,4), 499 LPC18XX_PIN_P(4,5), 500 LPC18XX_PIN_P(4,6), 501 LPC18XX_PIN_P(4,7), 502 LPC18XX_PIN_P(4,8), 503 LPC18XX_PIN_P(4,9), 504 LPC18XX_PIN_P(4,10), 505 LPC18XX_PIN_P(5,0), 506 LPC18XX_PIN_P(5,1), 507 LPC18XX_PIN_P(5,2), 508 LPC18XX_PIN_P(5,3), 509 LPC18XX_PIN_P(5,4), 510 LPC18XX_PIN_P(5,5), 511 LPC18XX_PIN_P(5,6), 512 LPC18XX_PIN_P(5,7), 513 LPC18XX_PIN_P(6,0), 514 LPC18XX_PIN_P(6,1), 515 LPC18XX_PIN_P(6,2), 516 LPC18XX_PIN_P(6,3), 517 LPC18XX_PIN_P(6,4), 518 LPC18XX_PIN_P(6,5), 519 LPC18XX_PIN_P(6,6), 520 LPC18XX_PIN_P(6,7), 521 LPC18XX_PIN_P(6,8), 522 LPC18XX_PIN_P(6,9), 523 LPC18XX_PIN_P(6,10), 524 LPC18XX_PIN_P(6,11), 525 LPC18XX_PIN_P(6,12), 526 LPC18XX_PIN_P(7,0), 527 LPC18XX_PIN_P(7,1), 528 LPC18XX_PIN_P(7,2), 529 LPC18XX_PIN_P(7,3), 530 LPC18XX_PIN_P(7,4), 531 LPC18XX_PIN_P(7,5), 532 LPC18XX_PIN_P(7,6), 533 LPC18XX_PIN_P(7,7), 534 LPC18XX_PIN_P(8,0), 535 LPC18XX_PIN_P(8,1), 536 LPC18XX_PIN_P(8,2), 537 LPC18XX_PIN_P(8,3), 538 LPC18XX_PIN_P(8,4), 539 LPC18XX_PIN_P(8,5), 540 LPC18XX_PIN_P(8,6), 541 LPC18XX_PIN_P(8,7), 542 LPC18XX_PIN_P(8,8), 543 LPC18XX_PIN_P(9,0), 544 LPC18XX_PIN_P(9,1), 545 LPC18XX_PIN_P(9,2), 546 LPC18XX_PIN_P(9,3), 547 LPC18XX_PIN_P(9,4), 548 LPC18XX_PIN_P(9,5), 549 LPC18XX_PIN_P(9,6), 550 LPC18XX_PIN_P(a,0), 551 LPC18XX_PIN_P(a,1), 552 LPC18XX_PIN_P(a,2), 553 LPC18XX_PIN_P(a,3), 554 LPC18XX_PIN_P(a,4), 555 LPC18XX_PIN_P(b,0), 556 LPC18XX_PIN_P(b,1), 557 LPC18XX_PIN_P(b,2), 558 LPC18XX_PIN_P(b,3), 559 LPC18XX_PIN_P(b,4), 560 LPC18XX_PIN_P(b,5), 561 LPC18XX_PIN_P(b,6), 562 LPC18XX_PIN_P(c,0), 563 LPC18XX_PIN_P(c,1), 564 LPC18XX_PIN_P(c,2), 565 LPC18XX_PIN_P(c,3), 566 LPC18XX_PIN_P(c,4), 567 LPC18XX_PIN_P(c,5), 568 LPC18XX_PIN_P(c,6), 569 LPC18XX_PIN_P(c,7), 570 LPC18XX_PIN_P(c,8), 571 LPC18XX_PIN_P(c,9), 572 LPC18XX_PIN_P(c,10), 573 LPC18XX_PIN_P(c,11), 574 LPC18XX_PIN_P(c,12), 575 LPC18XX_PIN_P(c,13), 576 LPC18XX_PIN_P(c,14), 577 LPC18XX_PIN_P(d,0), 578 LPC18XX_PIN_P(d,1), 579 LPC18XX_PIN_P(d,2), 580 LPC18XX_PIN_P(d,3), 581 LPC18XX_PIN_P(d,4), 582 LPC18XX_PIN_P(d,5), 583 LPC18XX_PIN_P(d,6), 584 LPC18XX_PIN_P(d,7), 585 LPC18XX_PIN_P(d,8), 586 LPC18XX_PIN_P(d,9), 587 LPC18XX_PIN_P(d,10), 588 LPC18XX_PIN_P(d,11), 589 LPC18XX_PIN_P(d,12), 590 LPC18XX_PIN_P(d,13), 591 LPC18XX_PIN_P(d,14), 592 LPC18XX_PIN_P(d,15), 593 LPC18XX_PIN_P(d,16), 594 LPC18XX_PIN_P(e,0), 595 LPC18XX_PIN_P(e,1), 596 LPC18XX_PIN_P(e,2), 597 LPC18XX_PIN_P(e,3), 598 LPC18XX_PIN_P(e,4), 599 LPC18XX_PIN_P(e,5), 600 LPC18XX_PIN_P(e,6), 601 LPC18XX_PIN_P(e,7), 602 LPC18XX_PIN_P(e,8), 603 LPC18XX_PIN_P(e,9), 604 LPC18XX_PIN_P(e,10), 605 LPC18XX_PIN_P(e,11), 606 LPC18XX_PIN_P(e,12), 607 LPC18XX_PIN_P(e,13), 608 LPC18XX_PIN_P(e,14), 609 LPC18XX_PIN_P(e,15), 610 LPC18XX_PIN_P(f,0), 611 LPC18XX_PIN_P(f,1), 612 LPC18XX_PIN_P(f,2), 613 LPC18XX_PIN_P(f,3), 614 LPC18XX_PIN_P(f,4), 615 LPC18XX_PIN_P(f,5), 616 LPC18XX_PIN_P(f,6), 617 LPC18XX_PIN_P(f,7), 618 LPC18XX_PIN_P(f,8), 619 LPC18XX_PIN_P(f,9), 620 LPC18XX_PIN_P(f,10), 621 LPC18XX_PIN_P(f,11), 622 623 LPC18XX_PIN(clk0, PIN_CLK0), 624 LPC18XX_PIN(clk1, PIN_CLK1), 625 LPC18XX_PIN(clk2, PIN_CLK2), 626 LPC18XX_PIN(clk3, PIN_CLK3), 627 LPC18XX_PIN(usb1_dm, PIN_USB1_DM), 628 LPC18XX_PIN(usb1_dp, PIN_USB1_DP), 629 LPC18XX_PIN(i2c0_scl, PIN_I2C0_SCL), 630 LPC18XX_PIN(i2c0_sda, PIN_I2C0_SDA), 631 }; 632 633 /* PIN_CONFIG_GPIO_PIN_INT: route gpio to the gpio pin interrupt controller */ 634 #define PIN_CONFIG_GPIO_PIN_INT (PIN_CONFIG_END + 1) 635 636 static const struct pinconf_generic_params lpc18xx_params[] = { 637 {"nxp,gpio-pin-interrupt", PIN_CONFIG_GPIO_PIN_INT, 0}, 638 }; 639 640 #ifdef CONFIG_DEBUG_FS 641 static const struct pin_config_item lpc18xx_conf_items[ARRAY_SIZE(lpc18xx_params)] = { 642 PCONFDUMP(PIN_CONFIG_GPIO_PIN_INT, "gpio pin int", NULL, true), 643 }; 644 #endif 645 646 static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg) 647 { 648 switch (param) { 649 case PIN_CONFIG_MODE_LOW_POWER: 650 if (reg & LPC18XX_SCU_USB1_EPWR) 651 *arg = 0; 652 else 653 *arg = 1; 654 break; 655 656 case PIN_CONFIG_BIAS_DISABLE: 657 if (reg & LPC18XX_SCU_USB1_EPD) 658 return -EINVAL; 659 break; 660 661 case PIN_CONFIG_BIAS_PULL_DOWN: 662 if (reg & LPC18XX_SCU_USB1_EPD) 663 *arg = 1; 664 else 665 return -EINVAL; 666 break; 667 668 default: 669 return -ENOTSUPP; 670 } 671 672 return 0; 673 } 674 675 static int lpc18xx_pconf_get_i2c0(enum pin_config_param param, int *arg, u32 reg, 676 unsigned pin) 677 { 678 u8 shift; 679 680 if (pin == PIN_I2C0_SCL) 681 shift = LPC18XX_SCU_I2C0_SCL_SHIFT; 682 else 683 shift = LPC18XX_SCU_I2C0_SDA_SHIFT; 684 685 switch (param) { 686 case PIN_CONFIG_INPUT_ENABLE: 687 if (reg & (LPC18XX_SCU_I2C0_EZI << shift)) 688 *arg = 1; 689 else 690 return -EINVAL; 691 break; 692 693 case PIN_CONFIG_SLEW_RATE: 694 if (reg & (LPC18XX_SCU_I2C0_EHD << shift)) 695 *arg = 1; 696 else 697 *arg = 0; 698 break; 699 700 case PIN_CONFIG_INPUT_SCHMITT: 701 if (reg & (LPC18XX_SCU_I2C0_EFP << shift)) 702 *arg = 3; 703 else 704 *arg = 50; 705 break; 706 707 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 708 if (reg & (LPC18XX_SCU_I2C0_ZIF << shift)) 709 return -EINVAL; 710 else 711 *arg = 1; 712 break; 713 714 default: 715 return -ENOTSUPP; 716 } 717 718 return 0; 719 } 720 721 static int lpc18xx_pin_to_gpio(struct pinctrl_dev *pctldev, unsigned pin) 722 { 723 struct pinctrl_gpio_range *range; 724 725 range = pinctrl_find_gpio_range_from_pin_nolock(pctldev, pin); 726 if (!range) 727 return -EINVAL; 728 729 return pin - range->pin_base + range->base; 730 } 731 732 static int lpc18xx_get_pintsel(void __iomem *addr, u32 val, int *arg) 733 { 734 u32 reg_val; 735 int i; 736 737 reg_val = readl(addr); 738 for (i = 0; i < LPC18XX_SCU_IRQ_PER_PINTSEL; i++) { 739 if ((reg_val & LPC18XX_SCU_PINTSEL_VAL_MASK) == val) 740 return 0; 741 742 reg_val >>= BITS_PER_BYTE; 743 *arg += 1; 744 } 745 746 return -EINVAL; 747 } 748 749 static u32 lpc18xx_gpio_to_pintsel_val(int gpio) 750 { 751 unsigned int gpio_port, gpio_pin; 752 753 gpio_port = gpio / LPC18XX_GPIO_PINS_PER_PORT; 754 gpio_pin = gpio % LPC18XX_GPIO_PINS_PER_PORT; 755 756 return gpio_pin | (gpio_port << LPC18XX_SCU_PINTSEL_PORT_SHIFT); 757 } 758 759 static int lpc18xx_pconf_get_gpio_pin_int(struct pinctrl_dev *pctldev, 760 int *arg, unsigned pin) 761 { 762 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); 763 int gpio, ret; 764 u32 val; 765 766 gpio = lpc18xx_pin_to_gpio(pctldev, pin); 767 if (gpio < 0) 768 return -ENOTSUPP; 769 770 val = lpc18xx_gpio_to_pintsel_val(gpio); 771 772 /* 773 * Check if this pin has been enabled as a interrupt in any of the two 774 * PINTSEL registers. *arg indicates which interrupt number (0-7). 775 */ 776 *arg = 0; 777 ret = lpc18xx_get_pintsel(scu->base + LPC18XX_SCU_PINTSEL0, val, arg); 778 if (ret == 0) 779 return ret; 780 781 return lpc18xx_get_pintsel(scu->base + LPC18XX_SCU_PINTSEL1, val, arg); 782 } 783 784 static int lpc18xx_pconf_get_pin(struct pinctrl_dev *pctldev, unsigned param, 785 int *arg, u32 reg, unsigned pin, 786 struct lpc18xx_pin_caps *pin_cap) 787 { 788 switch (param) { 789 case PIN_CONFIG_BIAS_DISABLE: 790 if ((!(reg & LPC18XX_SCU_PIN_EPD)) && (reg & LPC18XX_SCU_PIN_EPUN)) 791 ; 792 else 793 return -EINVAL; 794 break; 795 796 case PIN_CONFIG_BIAS_PULL_UP: 797 if (reg & LPC18XX_SCU_PIN_EPUN) 798 return -EINVAL; 799 else 800 *arg = 1; 801 break; 802 803 case PIN_CONFIG_BIAS_PULL_DOWN: 804 if (reg & LPC18XX_SCU_PIN_EPD) 805 *arg = 1; 806 else 807 return -EINVAL; 808 break; 809 810 case PIN_CONFIG_INPUT_ENABLE: 811 if (reg & LPC18XX_SCU_PIN_EZI) 812 *arg = 1; 813 else 814 return -EINVAL; 815 break; 816 817 case PIN_CONFIG_SLEW_RATE: 818 if (pin_cap->type == TYPE_HD) 819 return -ENOTSUPP; 820 821 if (reg & LPC18XX_SCU_PIN_EHS) 822 *arg = 1; 823 else 824 *arg = 0; 825 break; 826 827 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 828 if (reg & LPC18XX_SCU_PIN_ZIF) 829 return -EINVAL; 830 else 831 *arg = 1; 832 break; 833 834 case PIN_CONFIG_DRIVE_STRENGTH: 835 if (pin_cap->type != TYPE_HD) 836 return -ENOTSUPP; 837 838 *arg = (reg & LPC18XX_SCU_PIN_EHD_MASK) >> LPC18XX_SCU_PIN_EHD_POS; 839 switch (*arg) { 840 case 3: *arg += 5; 841 fallthrough; 842 case 2: *arg += 5; 843 fallthrough; 844 case 1: *arg += 3; 845 fallthrough; 846 case 0: *arg += 4; 847 } 848 break; 849 850 case PIN_CONFIG_GPIO_PIN_INT: 851 return lpc18xx_pconf_get_gpio_pin_int(pctldev, arg, pin); 852 853 default: 854 return -ENOTSUPP; 855 } 856 857 return 0; 858 } 859 860 static struct lpc18xx_pin_caps *lpc18xx_get_pin_caps(unsigned pin) 861 { 862 int i; 863 864 for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { 865 if (lpc18xx_pins[i].number == pin) 866 return lpc18xx_pins[i].drv_data; 867 } 868 869 return NULL; 870 } 871 872 static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin, 873 unsigned long *config) 874 { 875 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); 876 enum pin_config_param param = pinconf_to_config_param(*config); 877 struct lpc18xx_pin_caps *pin_cap; 878 int ret, arg = 0; 879 u32 reg; 880 881 pin_cap = lpc18xx_get_pin_caps(pin); 882 if (!pin_cap) 883 return -EINVAL; 884 885 reg = readl(scu->base + pin_cap->offset); 886 887 if (pin_cap->type == TYPE_I2C0) 888 ret = lpc18xx_pconf_get_i2c0(param, &arg, reg, pin); 889 else if (pin_cap->type == TYPE_USB1) 890 ret = lpc18xx_pconf_get_usb1(param, &arg, reg); 891 else 892 ret = lpc18xx_pconf_get_pin(pctldev, param, &arg, reg, pin, pin_cap); 893 894 if (ret < 0) 895 return ret; 896 897 *config = pinconf_to_config_packed(param, (u16)arg); 898 899 return 0; 900 } 901 902 static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev, 903 enum pin_config_param param, 904 u32 param_val, u32 *reg) 905 { 906 switch (param) { 907 case PIN_CONFIG_MODE_LOW_POWER: 908 if (param_val) 909 *reg &= ~LPC18XX_SCU_USB1_EPWR; 910 else 911 *reg |= LPC18XX_SCU_USB1_EPWR; 912 break; 913 914 case PIN_CONFIG_BIAS_DISABLE: 915 *reg &= ~LPC18XX_SCU_USB1_EPD; 916 break; 917 918 case PIN_CONFIG_BIAS_PULL_DOWN: 919 *reg |= LPC18XX_SCU_USB1_EPD; 920 break; 921 922 default: 923 dev_err(pctldev->dev, "Property not supported\n"); 924 return -ENOTSUPP; 925 } 926 927 return 0; 928 } 929 930 static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev, 931 enum pin_config_param param, 932 u32 param_val, u32 *reg, 933 unsigned pin) 934 { 935 u8 shift; 936 937 if (pin == PIN_I2C0_SCL) 938 shift = LPC18XX_SCU_I2C0_SCL_SHIFT; 939 else 940 shift = LPC18XX_SCU_I2C0_SDA_SHIFT; 941 942 switch (param) { 943 case PIN_CONFIG_INPUT_ENABLE: 944 if (param_val) 945 *reg |= (LPC18XX_SCU_I2C0_EZI << shift); 946 else 947 *reg &= ~(LPC18XX_SCU_I2C0_EZI << shift); 948 break; 949 950 case PIN_CONFIG_SLEW_RATE: 951 if (param_val) 952 *reg |= (LPC18XX_SCU_I2C0_EHD << shift); 953 else 954 *reg &= ~(LPC18XX_SCU_I2C0_EHD << shift); 955 break; 956 957 case PIN_CONFIG_INPUT_SCHMITT: 958 if (param_val == 3) 959 *reg |= (LPC18XX_SCU_I2C0_EFP << shift); 960 else if (param_val == 50) 961 *reg &= ~(LPC18XX_SCU_I2C0_EFP << shift); 962 else 963 return -ENOTSUPP; 964 break; 965 966 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 967 if (param_val) 968 *reg &= ~(LPC18XX_SCU_I2C0_ZIF << shift); 969 else 970 *reg |= (LPC18XX_SCU_I2C0_ZIF << shift); 971 break; 972 973 default: 974 dev_err(pctldev->dev, "Property not supported\n"); 975 return -ENOTSUPP; 976 } 977 978 return 0; 979 } 980 981 static int lpc18xx_pconf_set_gpio_pin_int(struct pinctrl_dev *pctldev, 982 u32 param_val, unsigned pin) 983 { 984 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); 985 u32 val, reg_val, reg_offset = LPC18XX_SCU_PINTSEL0; 986 int gpio; 987 988 if (param_val >= LPC18XX_GPIO_PIN_INT_MAX) 989 return -EINVAL; 990 991 gpio = lpc18xx_pin_to_gpio(pctldev, pin); 992 if (gpio < 0) 993 return -ENOTSUPP; 994 995 val = lpc18xx_gpio_to_pintsel_val(gpio); 996 997 reg_offset += (param_val / LPC18XX_SCU_IRQ_PER_PINTSEL) * sizeof(u32); 998 999 reg_val = readl(scu->base + reg_offset); 1000 reg_val &= ~LPC18XX_SCU_PINTSEL_VAL(LPC18XX_SCU_PINTSEL_VAL_MASK, param_val); 1001 reg_val |= LPC18XX_SCU_PINTSEL_VAL(val, param_val); 1002 writel(reg_val, scu->base + reg_offset); 1003 1004 return 0; 1005 } 1006 1007 static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, unsigned param, 1008 u32 param_val, u32 *reg, unsigned pin, 1009 struct lpc18xx_pin_caps *pin_cap) 1010 { 1011 switch (param) { 1012 case PIN_CONFIG_BIAS_DISABLE: 1013 *reg &= ~LPC18XX_SCU_PIN_EPD; 1014 *reg |= LPC18XX_SCU_PIN_EPUN; 1015 break; 1016 1017 case PIN_CONFIG_BIAS_PULL_UP: 1018 *reg &= ~LPC18XX_SCU_PIN_EPUN; 1019 break; 1020 1021 case PIN_CONFIG_BIAS_PULL_DOWN: 1022 *reg |= LPC18XX_SCU_PIN_EPD; 1023 break; 1024 1025 case PIN_CONFIG_INPUT_ENABLE: 1026 if (param_val) 1027 *reg |= LPC18XX_SCU_PIN_EZI; 1028 else 1029 *reg &= ~LPC18XX_SCU_PIN_EZI; 1030 break; 1031 1032 case PIN_CONFIG_SLEW_RATE: 1033 if (pin_cap->type == TYPE_HD) { 1034 dev_err(pctldev->dev, "Slew rate unsupported on high-drive pins\n"); 1035 return -ENOTSUPP; 1036 } 1037 1038 if (param_val == 0) 1039 *reg &= ~LPC18XX_SCU_PIN_EHS; 1040 else 1041 *reg |= LPC18XX_SCU_PIN_EHS; 1042 break; 1043 1044 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 1045 if (param_val) 1046 *reg &= ~LPC18XX_SCU_PIN_ZIF; 1047 else 1048 *reg |= LPC18XX_SCU_PIN_ZIF; 1049 break; 1050 1051 case PIN_CONFIG_DRIVE_STRENGTH: 1052 if (pin_cap->type != TYPE_HD) { 1053 dev_err(pctldev->dev, "Drive strength available only on high-drive pins\n"); 1054 return -ENOTSUPP; 1055 } 1056 *reg &= ~LPC18XX_SCU_PIN_EHD_MASK; 1057 1058 switch (param_val) { 1059 case 20: param_val -= 5; 1060 fallthrough; 1061 case 14: param_val -= 5; 1062 fallthrough; 1063 case 8: param_val -= 3; 1064 fallthrough; 1065 case 4: param_val -= 4; 1066 break; 1067 default: 1068 dev_err(pctldev->dev, "Drive strength %u unsupported\n", param_val); 1069 return -ENOTSUPP; 1070 } 1071 *reg |= param_val << LPC18XX_SCU_PIN_EHD_POS; 1072 break; 1073 1074 case PIN_CONFIG_GPIO_PIN_INT: 1075 return lpc18xx_pconf_set_gpio_pin_int(pctldev, param_val, pin); 1076 1077 default: 1078 dev_err(pctldev->dev, "Property not supported\n"); 1079 return -ENOTSUPP; 1080 } 1081 1082 return 0; 1083 } 1084 1085 static int lpc18xx_pconf_set(struct pinctrl_dev *pctldev, unsigned pin, 1086 unsigned long *configs, unsigned num_configs) 1087 { 1088 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); 1089 struct lpc18xx_pin_caps *pin_cap; 1090 enum pin_config_param param; 1091 u32 param_val; 1092 u32 reg; 1093 int ret; 1094 int i; 1095 1096 pin_cap = lpc18xx_get_pin_caps(pin); 1097 if (!pin_cap) 1098 return -EINVAL; 1099 1100 reg = readl(scu->base + pin_cap->offset); 1101 1102 for (i = 0; i < num_configs; i++) { 1103 param = pinconf_to_config_param(configs[i]); 1104 param_val = pinconf_to_config_argument(configs[i]); 1105 1106 if (pin_cap->type == TYPE_I2C0) 1107 ret = lpc18xx_pconf_set_i2c0(pctldev, param, param_val, ®, pin); 1108 else if (pin_cap->type == TYPE_USB1) 1109 ret = lpc18xx_pconf_set_usb1(pctldev, param, param_val, ®); 1110 else 1111 ret = lpc18xx_pconf_set_pin(pctldev, param, param_val, ®, pin, pin_cap); 1112 1113 if (ret) 1114 return ret; 1115 } 1116 1117 writel(reg, scu->base + pin_cap->offset); 1118 1119 return 0; 1120 } 1121 1122 static const struct pinconf_ops lpc18xx_pconf_ops = { 1123 .is_generic = true, 1124 .pin_config_get = lpc18xx_pconf_get, 1125 .pin_config_set = lpc18xx_pconf_set, 1126 }; 1127 1128 static int lpc18xx_pmx_get_funcs_count(struct pinctrl_dev *pctldev) 1129 { 1130 return ARRAY_SIZE(lpc18xx_function_names); 1131 } 1132 1133 static const char *lpc18xx_pmx_get_func_name(struct pinctrl_dev *pctldev, 1134 unsigned function) 1135 { 1136 return lpc18xx_function_names[function]; 1137 } 1138 1139 static int lpc18xx_pmx_get_func_groups(struct pinctrl_dev *pctldev, 1140 unsigned function, 1141 const char *const **groups, 1142 unsigned *const num_groups) 1143 { 1144 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); 1145 1146 *groups = scu->func[function].groups; 1147 *num_groups = scu->func[function].ngroups; 1148 1149 return 0; 1150 } 1151 1152 static int lpc18xx_pmx_set(struct pinctrl_dev *pctldev, unsigned function, 1153 unsigned group) 1154 { 1155 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev); 1156 struct lpc18xx_pin_caps *pin = lpc18xx_pins[group].drv_data; 1157 int func; 1158 u32 reg; 1159 1160 /* Dedicated USB1 and I2C0 pins doesn't support muxing */ 1161 if (pin->type == TYPE_USB1) { 1162 if (function == FUNC_USB1) 1163 return 0; 1164 1165 goto fail; 1166 } 1167 1168 if (pin->type == TYPE_I2C0) { 1169 if (function == FUNC_I2C0) 1170 return 0; 1171 1172 goto fail; 1173 } 1174 1175 if (function == FUNC_ADC && (pin->analog & LPC18XX_ANALOG_PIN)) { 1176 u32 offset; 1177 1178 writel(LPC18XX_SCU_ANALOG_PIN_CFG, scu->base + pin->offset); 1179 1180 if (LPC18XX_ANALOG_ADC(pin->analog) == 0) 1181 offset = LPC18XX_SCU_REG_ENAIO0; 1182 else 1183 offset = LPC18XX_SCU_REG_ENAIO1; 1184 1185 reg = readl(scu->base + offset); 1186 reg |= pin->analog & LPC18XX_ANALOG_BIT_MASK; 1187 writel(reg, scu->base + offset); 1188 1189 return 0; 1190 } 1191 1192 if (function == FUNC_DAC && (pin->analog & LPC18XX_ANALOG_PIN)) { 1193 writel(LPC18XX_SCU_ANALOG_PIN_CFG, scu->base + pin->offset); 1194 1195 reg = readl(scu->base + LPC18XX_SCU_REG_ENAIO2); 1196 reg |= LPC18XX_SCU_REG_ENAIO2_DAC; 1197 writel(reg, scu->base + LPC18XX_SCU_REG_ENAIO2); 1198 1199 return 0; 1200 } 1201 1202 for (func = 0; func < LPC18XX_SCU_FUNC_PER_PIN; func++) { 1203 if (function == pin->functions[func]) 1204 break; 1205 } 1206 1207 if (func >= LPC18XX_SCU_FUNC_PER_PIN) 1208 goto fail; 1209 1210 reg = readl(scu->base + pin->offset); 1211 reg &= ~LPC18XX_SCU_PIN_MODE_MASK; 1212 writel(reg | func, scu->base + pin->offset); 1213 1214 return 0; 1215 fail: 1216 dev_err(pctldev->dev, "Pin %s can't be %s\n", lpc18xx_pins[group].name, 1217 lpc18xx_function_names[function]); 1218 return -EINVAL; 1219 } 1220 1221 static const struct pinmux_ops lpc18xx_pmx_ops = { 1222 .get_functions_count = lpc18xx_pmx_get_funcs_count, 1223 .get_function_name = lpc18xx_pmx_get_func_name, 1224 .get_function_groups = lpc18xx_pmx_get_func_groups, 1225 .set_mux = lpc18xx_pmx_set, 1226 }; 1227 1228 static int lpc18xx_pctl_get_groups_count(struct pinctrl_dev *pctldev) 1229 { 1230 return ARRAY_SIZE(lpc18xx_pins); 1231 } 1232 1233 static const char *lpc18xx_pctl_get_group_name(struct pinctrl_dev *pctldev, 1234 unsigned group) 1235 { 1236 return lpc18xx_pins[group].name; 1237 } 1238 1239 static int lpc18xx_pctl_get_group_pins(struct pinctrl_dev *pctldev, 1240 unsigned group, 1241 const unsigned **pins, 1242 unsigned *num_pins) 1243 { 1244 *pins = &lpc18xx_pins[group].number; 1245 *num_pins = 1; 1246 1247 return 0; 1248 } 1249 1250 static const struct pinctrl_ops lpc18xx_pctl_ops = { 1251 .get_groups_count = lpc18xx_pctl_get_groups_count, 1252 .get_group_name = lpc18xx_pctl_get_group_name, 1253 .get_group_pins = lpc18xx_pctl_get_group_pins, 1254 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, 1255 .dt_free_map = pinctrl_utils_free_map, 1256 }; 1257 1258 static struct pinctrl_desc lpc18xx_scu_desc = { 1259 .name = "lpc18xx/43xx-scu", 1260 .pins = lpc18xx_pins, 1261 .npins = ARRAY_SIZE(lpc18xx_pins), 1262 .pctlops = &lpc18xx_pctl_ops, 1263 .pmxops = &lpc18xx_pmx_ops, 1264 .confops = &lpc18xx_pconf_ops, 1265 .num_custom_params = ARRAY_SIZE(lpc18xx_params), 1266 .custom_params = lpc18xx_params, 1267 #ifdef CONFIG_DEBUG_FS 1268 .custom_conf_items = lpc18xx_conf_items, 1269 #endif 1270 .owner = THIS_MODULE, 1271 }; 1272 1273 static bool lpc18xx_valid_pin_function(unsigned pin, unsigned function) 1274 { 1275 struct lpc18xx_pin_caps *p = lpc18xx_pins[pin].drv_data; 1276 int i; 1277 1278 if (function == FUNC_DAC && p->analog == DAC) 1279 return true; 1280 1281 if (function == FUNC_ADC && p->analog) 1282 return true; 1283 1284 if (function == FUNC_I2C0 && p->type == TYPE_I2C0) 1285 return true; 1286 1287 if (function == FUNC_USB1 && p->type == TYPE_USB1) 1288 return true; 1289 1290 for (i = 0; i < LPC18XX_SCU_FUNC_PER_PIN; i++) { 1291 if (function == p->functions[i]) 1292 return true; 1293 } 1294 1295 return false; 1296 } 1297 1298 static int lpc18xx_create_group_func_map(struct device *dev, 1299 struct lpc18xx_scu_data *scu) 1300 { 1301 u16 pins[ARRAY_SIZE(lpc18xx_pins)]; 1302 int func, ngroups, i; 1303 1304 for (func = 0; func < FUNC_MAX; func++) { 1305 for (ngroups = 0, i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { 1306 if (lpc18xx_valid_pin_function(i, func)) 1307 pins[ngroups++] = i; 1308 } 1309 1310 scu->func[func].ngroups = ngroups; 1311 scu->func[func].groups = devm_kcalloc(dev, 1312 ngroups, sizeof(char *), 1313 GFP_KERNEL); 1314 if (!scu->func[func].groups) 1315 return -ENOMEM; 1316 1317 for (i = 0; i < ngroups; i++) 1318 scu->func[func].groups[i] = lpc18xx_pins[pins[i]].name; 1319 } 1320 1321 return 0; 1322 } 1323 1324 static int lpc18xx_scu_probe(struct platform_device *pdev) 1325 { 1326 struct lpc18xx_scu_data *scu; 1327 int ret; 1328 1329 scu = devm_kzalloc(&pdev->dev, sizeof(*scu), GFP_KERNEL); 1330 if (!scu) 1331 return -ENOMEM; 1332 1333 scu->base = devm_platform_ioremap_resource(pdev, 0); 1334 if (IS_ERR(scu->base)) 1335 return PTR_ERR(scu->base); 1336 1337 scu->clk = devm_clk_get(&pdev->dev, NULL); 1338 if (IS_ERR(scu->clk)) { 1339 dev_err(&pdev->dev, "Input clock not found.\n"); 1340 return PTR_ERR(scu->clk); 1341 } 1342 1343 ret = lpc18xx_create_group_func_map(&pdev->dev, scu); 1344 if (ret) { 1345 dev_err(&pdev->dev, "Unable to create group func map.\n"); 1346 return ret; 1347 } 1348 1349 ret = clk_prepare_enable(scu->clk); 1350 if (ret) { 1351 dev_err(&pdev->dev, "Unable to enable clock.\n"); 1352 return ret; 1353 } 1354 1355 platform_set_drvdata(pdev, scu); 1356 1357 scu->pctl = devm_pinctrl_register(&pdev->dev, &lpc18xx_scu_desc, scu); 1358 if (IS_ERR(scu->pctl)) { 1359 dev_err(&pdev->dev, "Could not register pinctrl driver\n"); 1360 clk_disable_unprepare(scu->clk); 1361 return PTR_ERR(scu->pctl); 1362 } 1363 1364 return 0; 1365 } 1366 1367 static const struct of_device_id lpc18xx_scu_match[] = { 1368 { .compatible = "nxp,lpc1850-scu" }, 1369 {}, 1370 }; 1371 1372 static struct platform_driver lpc18xx_scu_driver = { 1373 .probe = lpc18xx_scu_probe, 1374 .driver = { 1375 .name = "lpc18xx-scu", 1376 .of_match_table = lpc18xx_scu_match, 1377 .suppress_bind_attrs = true, 1378 }, 1379 }; 1380 builtin_platform_driver(lpc18xx_scu_driver); 1381