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[mirror_ubuntu-bionic-kernel.git] / drivers / pinctrl / pinctrl-lpc18xx.c
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/module.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_I2C0_EFP BIT(0)
41 #define LPC18XX_SCU_I2C0_EHD BIT(2)
42 #define LPC18XX_SCU_I2C0_EZI BIT(3)
43 #define LPC18XX_SCU_I2C0_ZIF BIT(7)
44 #define LPC18XX_SCU_I2C0_SCL_SHIFT 0
45 #define LPC18XX_SCU_I2C0_SDA_SHIFT 8
46
47 #define LPC18XX_SCU_FUNC_PER_PIN 8
48
49 /* LPC18xx pin types */
50 enum {
51 TYPE_ND, /* Normal-drive */
52 TYPE_HD, /* High-drive */
53 TYPE_HS, /* High-speed */
54 TYPE_I2C0,
55 TYPE_USB1,
56 };
57
58 /* LPC18xx pin functions */
59 enum {
60 FUNC_R, /* Reserved */
61 FUNC_ADC,
62 FUNC_ADCTRIG,
63 FUNC_CAN0,
64 FUNC_CAN1,
65 FUNC_CGU_OUT,
66 FUNC_CLKIN,
67 FUNC_CLKOUT,
68 FUNC_CTIN,
69 FUNC_CTOUT,
70 FUNC_DAC,
71 FUNC_EMC,
72 FUNC_EMC_ALT,
73 FUNC_ENET,
74 FUNC_ENET_ALT,
75 FUNC_GPIO,
76 FUNC_I2C0,
77 FUNC_I2C1,
78 FUNC_I2S0_RX_MCLK,
79 FUNC_I2S0_RX_SCK,
80 FUNC_I2S0_RX_SDA,
81 FUNC_I2S0_RX_WS,
82 FUNC_I2S0_TX_MCLK,
83 FUNC_I2S0_TX_SCK,
84 FUNC_I2S0_TX_SDA,
85 FUNC_I2S0_TX_WS,
86 FUNC_I2S1,
87 FUNC_LCD,
88 FUNC_LCD_ALT,
89 FUNC_MCTRL,
90 FUNC_NMI,
91 FUNC_QEI,
92 FUNC_SDMMC,
93 FUNC_SGPIO,
94 FUNC_SPI,
95 FUNC_SPIFI,
96 FUNC_SSP0,
97 FUNC_SSP0_ALT,
98 FUNC_SSP1,
99 FUNC_TIMER0,
100 FUNC_TIMER1,
101 FUNC_TIMER2,
102 FUNC_TIMER3,
103 FUNC_TRACE,
104 FUNC_UART0,
105 FUNC_UART1,
106 FUNC_UART2,
107 FUNC_UART3,
108 FUNC_USB0,
109 FUNC_USB1,
110 FUNC_MAX
111 };
112
113 static const char *const lpc18xx_function_names[] = {
114 [FUNC_R] = "reserved",
115 [FUNC_ADC] = "adc",
116 [FUNC_ADCTRIG] = "adctrig",
117 [FUNC_CAN0] = "can0",
118 [FUNC_CAN1] = "can1",
119 [FUNC_CGU_OUT] = "cgu_out",
120 [FUNC_CLKIN] = "clkin",
121 [FUNC_CLKOUT] = "clkout",
122 [FUNC_CTIN] = "ctin",
123 [FUNC_CTOUT] = "ctout",
124 [FUNC_DAC] = "dac",
125 [FUNC_EMC] = "emc",
126 [FUNC_EMC_ALT] = "emc_alt",
127 [FUNC_ENET] = "enet",
128 [FUNC_ENET_ALT] = "enet_alt",
129 [FUNC_GPIO] = "gpio",
130 [FUNC_I2C0] = "i2c0",
131 [FUNC_I2C1] = "i2c1",
132 [FUNC_I2S0_RX_MCLK] = "i2s0_rx_mclk",
133 [FUNC_I2S0_RX_SCK] = "i2s0_rx_sck",
134 [FUNC_I2S0_RX_SDA] = "i2s0_rx_sda",
135 [FUNC_I2S0_RX_WS] = "i2s0_rx_ws",
136 [FUNC_I2S0_TX_MCLK] = "i2s0_tx_mclk",
137 [FUNC_I2S0_TX_SCK] = "i2s0_tx_sck",
138 [FUNC_I2S0_TX_SDA] = "i2s0_tx_sda",
139 [FUNC_I2S0_TX_WS] = "i2s0_tx_ws",
140 [FUNC_I2S1] = "i2s1",
141 [FUNC_LCD] = "lcd",
142 [FUNC_LCD_ALT] = "lcd_alt",
143 [FUNC_MCTRL] = "mctrl",
144 [FUNC_NMI] = "nmi",
145 [FUNC_QEI] = "qei",
146 [FUNC_SDMMC] = "sdmmc",
147 [FUNC_SGPIO] = "sgpio",
148 [FUNC_SPI] = "spi",
149 [FUNC_SPIFI] = "spifi",
150 [FUNC_SSP0] = "ssp0",
151 [FUNC_SSP0_ALT] = "ssp0_alt",
152 [FUNC_SSP1] = "ssp1",
153 [FUNC_TIMER0] = "timer0",
154 [FUNC_TIMER1] = "timer1",
155 [FUNC_TIMER2] = "timer2",
156 [FUNC_TIMER3] = "timer3",
157 [FUNC_TRACE] = "trace",
158 [FUNC_UART0] = "uart0",
159 [FUNC_UART1] = "uart1",
160 [FUNC_UART2] = "uart2",
161 [FUNC_UART3] = "uart3",
162 [FUNC_USB0] = "usb0",
163 [FUNC_USB1] = "usb1",
164 };
165
166 struct lpc18xx_pmx_func {
167 const char **groups;
168 unsigned ngroups;
169 };
170
171 struct lpc18xx_scu_data {
172 struct pinctrl_dev *pctl;
173 void __iomem *base;
174 struct clk *clk;
175 struct lpc18xx_pmx_func func[FUNC_MAX];
176 };
177
178 struct lpc18xx_pin_caps {
179 unsigned int offset;
180 unsigned char functions[LPC18XX_SCU_FUNC_PER_PIN];
181 unsigned char analog;
182 unsigned char type;
183 };
184
185 /* Analog pins are required to have both bias and input disabled */
186 #define LPC18XX_SCU_ANALOG_PIN_CFG 0x10
187
188 /* Macros to maniupluate analog member in lpc18xx_pin_caps */
189 #define LPC18XX_ANALOG_PIN BIT(7)
190 #define LPC18XX_ANALOG_ADC(a) ((a >> 5) & 0x3)
191 #define LPC18XX_ANALOG_BIT_MASK 0x1f
192 #define ADC0 (LPC18XX_ANALOG_PIN | (0x00 << 5))
193 #define ADC1 (LPC18XX_ANALOG_PIN | (0x01 << 5))
194 #define DAC LPC18XX_ANALOG_PIN
195
196 #define LPC_P(port, pin, f0, f1, f2, f3, f4, f5, f6, f7, a, t) \
197 static struct lpc18xx_pin_caps lpc18xx_pin_p##port##_##pin = { \
198 .offset = 0x##port * 32 * 4 + pin * 4, \
199 .functions = { \
200 FUNC_##f0, FUNC_##f1, FUNC_##f2, \
201 FUNC_##f3, FUNC_##f4, FUNC_##f5, \
202 FUNC_##f6, FUNC_##f7, \
203 }, \
204 .analog = a, \
205 .type = TYPE_##t, \
206 }
207
208 #define LPC_N(pname, off, f0, f1, f2, f3, f4, f5, f6, f7, a, t) \
209 static struct lpc18xx_pin_caps lpc18xx_pin_##pname = { \
210 .offset = off, \
211 .functions = { \
212 FUNC_##f0, FUNC_##f1, FUNC_##f2, \
213 FUNC_##f3, FUNC_##f4, FUNC_##f5, \
214 FUNC_##f6, FUNC_##f7, \
215 }, \
216 .analog = a, \
217 .type = TYPE_##t, \
218 }
219
220
221 /* Pinmuxing table taken from data sheet */
222 /* Pin FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */
223 LPC_P(0,0, GPIO, SSP1, ENET, SGPIO, R, R, I2S0_TX_WS,I2S1, 0, ND);
224 LPC_P(0,1, GPIO, SSP1,ENET_ALT,SGPIO, R, R, ENET, I2S1, 0, ND);
225 LPC_P(1,0, GPIO, CTIN, EMC, R, R, SSP0, SGPIO, R, 0, ND);
226 LPC_P(1,1, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND);
227 LPC_P(1,2, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND);
228 LPC_P(1,3, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND);
229 LPC_P(1,4, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND);
230 LPC_P(1,5, GPIO, CTOUT, R, EMC, USB0, SSP1, SGPIO, SDMMC, 0, ND);
231 LPC_P(1,6, GPIO, CTIN, R, EMC, R, R, SGPIO, SDMMC, 0, ND);
232 LPC_P(1,7, GPIO, UART1, CTOUT, EMC, USB0, R, R, R, 0, ND);
233 LPC_P(1,8, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
234 LPC_P(1,9, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
235 LPC_P(1,10, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
236 LPC_P(1,11, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
237 LPC_P(1,12, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND);
238 LPC_P(1,13, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND);
239 LPC_P(1,14, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, R, 0, ND);
240 LPC_P(1,15, GPIO, UART2, SGPIO, ENET, TIMER0, R, R, R, 0, ND);
241 LPC_P(1,16, GPIO, UART2, SGPIO,ENET_ALT,TIMER0, R, R, ENET, 0, ND);
242 LPC_P(1,17, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, HD);
243 LPC_P(1,18, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, ND);
244 LPC_P(1,19, ENET, SSP1, R, R, CLKOUT, R, I2S0_RX_MCLK,I2S1, 0, ND);
245 LPC_P(1,20, GPIO, SSP1, R, ENET, TIMER0, R, SGPIO, R, 0, ND);
246 LPC_P(2,0, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, ENET, 0, ND);
247 LPC_P(2,1, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, R, 0, ND);
248 LPC_P(2,2, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND);
249 LPC_P(2,3, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD);
250 LPC_P(2,4, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD);
251 LPC_P(2,5, SGPIO, CTIN, USB1, ADCTRIG, GPIO, R, TIMER3, USB0, 0, HD);
252 LPC_P(2,6, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND);
253 LPC_P(2,7, GPIO, CTOUT, UART3, EMC, R, R, TIMER3, R, 0, ND);
254 LPC_P(2,8, SGPIO, CTOUT, UART3, EMC, GPIO, R, R, R, 0, ND);
255 LPC_P(2,9, GPIO, CTOUT, UART3, EMC, R, R, R, R, 0, ND);
256 LPC_P(2,10, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND);
257 LPC_P(2,11, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND);
258 LPC_P(2,12, GPIO, CTOUT, R, EMC, R, R, R, UART2, 0, ND);
259 LPC_P(2,13, GPIO, CTIN, R, EMC, R, R, R, UART2, 0, ND);
260 LPC_P(3,0, I2S0_RX_SCK, I2S0_RX_MCLK, I2S0_TX_SCK, I2S0_TX_MCLK,SSP0,R,R,R, 0, ND);
261 LPC_P(3,1, I2S0_TX_WS, I2S0_RX_WS,CAN0,USB1,GPIO, R, LCD, R, 0, ND);
262 LPC_P(3,2, I2S0_TX_SDA, I2S0_RX_SDA,CAN0,USB1,GPIO, R, LCD, R, 0, ND);
263 LPC_P(3,3, R, SPI, SSP0, SPIFI, CGU_OUT,R, I2S0_TX_MCLK, I2S1, 0, HS);
264 LPC_P(3,4, GPIO, R, R, SPIFI, UART1, I2S0_TX_WS, I2S1, LCD, 0, ND);
265 LPC_P(3,5, GPIO, R, R, SPIFI, UART1, I2S0_TX_SDA,I2S1, LCD, 0, ND);
266 LPC_P(3,6, GPIO, SPI, SSP0, SPIFI, R, SSP0_ALT, R, R, 0, ND);
267 LPC_P(3,7, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND);
268 LPC_P(3,8, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND);
269 LPC_P(4,0, GPIO, MCTRL, NMI, R, R, LCD, UART3, R, 0, ND);
270 LPC_P(4,1, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, ENET, ADC0|1, ND);
271 LPC_P(4,2, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, 0, ND);
272 LPC_P(4,3, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, ADC0|0, ND);
273 LPC_P(4,4, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, DAC, ND);
274 LPC_P(4,5, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND);
275 LPC_P(4,6, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND);
276 LPC_P(4,7, LCD, CLKIN, R, R, R, R, I2S1,I2S0_TX_SCK, 0, ND);
277 LPC_P(4,8, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND);
278 LPC_P(4,9, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND);
279 LPC_P(4,10, R, CTIN, LCD, R, GPIO, LCD_ALT, R, SGPIO, 0, ND);
280 LPC_P(5,0, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
281 LPC_P(5,1, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
282 LPC_P(5,2, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
283 LPC_P(5,3, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
284 LPC_P(5,4, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
285 LPC_P(5,5, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
286 LPC_P(5,6, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
287 LPC_P(5,7, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
288 LPC_P(6,0, R, I2S0_RX_MCLK,R, R, I2S0_RX_SCK, R, R, R, 0, ND);
289 LPC_P(6,1, GPIO, EMC, UART0, I2S0_RX_WS, R, TIMER2, R, R, 0, ND);
290 LPC_P(6,2, GPIO, EMC, UART0, I2S0_RX_SDA, R, TIMER2, R, R, 0, ND);
291 LPC_P(6,3, GPIO, USB0, SGPIO, EMC, R, TIMER2, R, R, 0, ND);
292 LPC_P(6,4, GPIO, CTIN, UART0, EMC, R, R, R, R, 0, ND);
293 LPC_P(6,5, GPIO, CTOUT, UART0, EMC, R, R, R, R, 0, ND);
294 LPC_P(6,6, GPIO, EMC, SGPIO, USB0, R, TIMER2, R, R, 0, ND);
295 LPC_P(6,7, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND);
296 LPC_P(6,8, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND);
297 LPC_P(6,9, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND);
298 LPC_P(6,10, GPIO, MCTRL, R, EMC, R, R, R, R, 0, ND);
299 LPC_P(6,11, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND);
300 LPC_P(6,12, GPIO, CTOUT, R, EMC, R, R, R, R, 0, ND);
301 LPC_P(7,0, GPIO, CTOUT, R, LCD, R, R, R, SGPIO, 0, ND);
302 LPC_P(7,1, GPIO, CTOUT,I2S0_TX_WS,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND);
303 LPC_P(7,2, GPIO, CTIN,I2S0_TX_SDA,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND);
304 LPC_P(7,3, GPIO, CTIN, R, LCD,LCD_ALT, R, R, R, 0, ND);
305 LPC_P(7,4, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|4, ND);
306 LPC_P(7,5, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|3, ND);
307 LPC_P(7,6, GPIO, CTOUT, R, LCD, R, TRACE, R, R, 0, ND);
308 LPC_P(7,7, GPIO, CTOUT, R, LCD, R, TRACE, ENET, SGPIO, ADC1|6, ND);
309 LPC_P(8,0, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD);
310 LPC_P(8,1, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD);
311 LPC_P(8,2, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD);
312 LPC_P(8,3, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
313 LPC_P(8,4, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
314 LPC_P(8,5, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
315 LPC_P(8,6, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
316 LPC_P(8,7, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
317 LPC_P(8,8, R, USB1, R, R, R, R,CGU_OUT, I2S1, 0, ND);
318 LPC_P(9,0, GPIO, MCTRL, R, R, R, ENET, SGPIO, SSP0, 0, ND);
319 LPC_P(9,1, GPIO, MCTRL, R, R, I2S0_TX_WS,ENET, SGPIO, SSP0, 0, ND);
320 LPC_P(9,2, GPIO, MCTRL, R, R, I2S0_TX_SDA,ENET,SGPIO, SSP0, 0, ND);
321 LPC_P(9,3, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART3, 0, ND);
322 LPC_P(9,4, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART3, 0, ND);
323 LPC_P(9,5, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART0, 0, ND);
324 LPC_P(9,6, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART0, 0, ND);
325 LPC_P(a,0, R, R, R, R, R, I2S1, CGU_OUT, R, 0, ND);
326 LPC_P(a,1, GPIO, QEI, R, UART2, R, R, R, R, 0, HD);
327 LPC_P(a,2, GPIO, QEI, R, UART2, R, R, R, R, 0, HD);
328 LPC_P(a,3, GPIO, QEI, R, R, R, R, R, R, 0, HD);
329 LPC_P(a,4, R, CTOUT, R, EMC, GPIO, R, R, R, 0, ND);
330 LPC_P(b,0, R, CTOUT, LCD, R, GPIO, R, R, R, 0, ND);
331 LPC_P(b,1, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND);
332 LPC_P(b,2, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND);
333 LPC_P(b,3, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND);
334 LPC_P(b,4, R, USB1, LCD, R, GPIO, CTIN, R, R, 0, ND);
335 LPC_P(b,5, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, 0, ND);
336 LPC_P(b,6, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, ADC0|6, ND);
337 LPC_P(c,0, R, USB1, R, ENET, LCD, R, R, SDMMC, ADC1|1, ND);
338 LPC_P(c,1, USB1, R, UART1, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
339 LPC_P(c,2, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, 0, ND);
340 LPC_P(c,3, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, ADC1|0, ND);
341 LPC_P(c,4, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
342 LPC_P(c,5, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
343 LPC_P(c,6, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
344 LPC_P(c,7, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
345 LPC_P(c,8, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
346 LPC_P(c,9, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
347 LPC_P(c,10, R, USB1, UART1, R, GPIO, R, TIMER3, SDMMC, 0, ND);
348 LPC_P(c,11, R, USB1, UART1, R, GPIO, R, R, SDMMC, 0, ND);
349 LPC_P(c,12, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_SDA,SDMMC, 0, ND);
350 LPC_P(c,13, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_WS, SDMMC, 0, ND);
351 LPC_P(c,14, R, R, UART1, R, GPIO, SGPIO, ENET, SDMMC, 0, ND);
352 LPC_P(d,0, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
353 LPC_P(d,1, R, R, EMC, R, GPIO, SDMMC, R, SGPIO, 0, ND);
354 LPC_P(d,2, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
355 LPC_P(d,3, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
356 LPC_P(d,4, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
357 LPC_P(d,5, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
358 LPC_P(d,6, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
359 LPC_P(d,7, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND);
360 LPC_P(d,8, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND);
361 LPC_P(d,9, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
362 LPC_P(d,10, R, CTIN, EMC, R, GPIO, R, R, R, 0, ND);
363 LPC_P(d,11, R, R, EMC, R, GPIO, USB1, CTOUT, R, 0, ND);
364 LPC_P(d,12, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND);
365 LPC_P(d,13, R, CTIN, EMC, R, GPIO, R, CTOUT, R, 0, ND);
366 LPC_P(d,14, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND);
367 LPC_P(d,15, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND);
368 LPC_P(d,16, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND);
369 LPC_P(e,0, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND);
370 LPC_P(e,1, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND);
371 LPC_P(e,2,ADCTRIG, CAN0, R, EMC, GPIO, R, R, R, 0, ND);
372 LPC_P(e,3, R, CAN0,ADCTRIG, EMC, GPIO, R, R, R, 0, ND);
373 LPC_P(e,4, R, NMI, R, EMC, GPIO, R, R, R, 0, ND);
374 LPC_P(e,5, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
375 LPC_P(e,6, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
376 LPC_P(e,7, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
377 LPC_P(e,8, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
378 LPC_P(e,9, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND);
379 LPC_P(e,10, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND);
380 LPC_P(e,11, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
381 LPC_P(e,12, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
382 LPC_P(e,13, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND);
383 LPC_P(e,14, R, R, R, EMC, GPIO, R, R, R, 0, ND);
384 LPC_P(e,15, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND);
385 LPC_P(f,0, SSP0, CLKIN, R, R, R, R, R, I2S1, 0, ND);
386 LPC_P(f,1, R, R, SSP0, R, GPIO, R, SGPIO, R, 0, ND);
387 LPC_P(f,2, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND);
388 LPC_P(f,3, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND);
389 LPC_P(f,4, SSP1, CLKIN, TRACE, R, R, R, I2S0_TX_MCLK,I2S0_RX_SCK, 0, ND);
390 LPC_P(f,5, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, R, ADC1|4, ND);
391 LPC_P(f,6, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|3, ND);
392 LPC_P(f,7, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|7, ND);
393 LPC_P(f,8, R, UART0, CTIN, TRACE, GPIO, R, SGPIO, R, ADC0|2, ND);
394 LPC_P(f,9, R, UART0, CTOUT, R, GPIO, R, SGPIO, R, ADC1|2, ND);
395 LPC_P(f,10, R, UART0, R, R, GPIO, R, SDMMC, R, ADC0|5, ND);
396 LPC_P(f,11, R, UART0, R, R, GPIO, R, SDMMC, R, ADC1|5, ND);
397
398 /* Pin Offset FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */
399 LPC_N(clk0, 0xc00, EMC, CLKOUT, R, R, SDMMC, EMC_ALT, SSP1, ENET, 0, HS);
400 LPC_N(clk1, 0xc04, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS);
401 LPC_N(clk2, 0xc08, EMC, CLKOUT, R, R, SDMMC, EMC_ALT,I2S0_TX_MCLK,I2S1, 0, HS);
402 LPC_N(clk3, 0xc0c, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS);
403 LPC_N(usb1_dm, 0xc80, R, R, R, R, R, R, R, R, 0, USB1);
404 LPC_N(usb1_dp, 0xc80, R, R, R, R, R, R, R, R, 0, USB1);
405 LPC_N(i2c0_scl, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0);
406 LPC_N(i2c0_sda, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0);
407
408 #define LPC18XX_PIN_P(port, pin) { \
409 .number = 0x##port * 32 + pin, \
410 .name = "p"#port"_"#pin, \
411 .drv_data = &lpc18xx_pin_p##port##_##pin \
412 }
413
414 /* Pin numbers for special pins */
415 enum {
416 PIN_CLK0 = 600,
417 PIN_CLK1,
418 PIN_CLK2,
419 PIN_CLK3,
420 PIN_USB1_DM,
421 PIN_USB1_DP,
422 PIN_I2C0_SCL,
423 PIN_I2C0_SDA,
424 };
425
426 #define LPC18XX_PIN(pname, n) { \
427 .number = n, \
428 .name = #pname, \
429 .drv_data = &lpc18xx_pin_##pname \
430 }
431
432 static const struct pinctrl_pin_desc lpc18xx_pins[] = {
433 LPC18XX_PIN_P(0,0),
434 LPC18XX_PIN_P(0,1),
435 LPC18XX_PIN_P(1,0),
436 LPC18XX_PIN_P(1,1),
437 LPC18XX_PIN_P(1,2),
438 LPC18XX_PIN_P(1,3),
439 LPC18XX_PIN_P(1,4),
440 LPC18XX_PIN_P(1,5),
441 LPC18XX_PIN_P(1,6),
442 LPC18XX_PIN_P(1,7),
443 LPC18XX_PIN_P(1,8),
444 LPC18XX_PIN_P(1,9),
445 LPC18XX_PIN_P(1,10),
446 LPC18XX_PIN_P(1,11),
447 LPC18XX_PIN_P(1,12),
448 LPC18XX_PIN_P(1,13),
449 LPC18XX_PIN_P(1,14),
450 LPC18XX_PIN_P(1,15),
451 LPC18XX_PIN_P(1,16),
452 LPC18XX_PIN_P(1,17),
453 LPC18XX_PIN_P(1,18),
454 LPC18XX_PIN_P(1,19),
455 LPC18XX_PIN_P(1,20),
456 LPC18XX_PIN_P(2,0),
457 LPC18XX_PIN_P(2,1),
458 LPC18XX_PIN_P(2,2),
459 LPC18XX_PIN_P(2,3),
460 LPC18XX_PIN_P(2,4),
461 LPC18XX_PIN_P(2,5),
462 LPC18XX_PIN_P(2,6),
463 LPC18XX_PIN_P(2,7),
464 LPC18XX_PIN_P(2,8),
465 LPC18XX_PIN_P(2,9),
466 LPC18XX_PIN_P(2,10),
467 LPC18XX_PIN_P(2,11),
468 LPC18XX_PIN_P(2,12),
469 LPC18XX_PIN_P(2,13),
470 LPC18XX_PIN_P(3,0),
471 LPC18XX_PIN_P(3,1),
472 LPC18XX_PIN_P(3,2),
473 LPC18XX_PIN_P(3,3),
474 LPC18XX_PIN_P(3,4),
475 LPC18XX_PIN_P(3,5),
476 LPC18XX_PIN_P(3,6),
477 LPC18XX_PIN_P(3,7),
478 LPC18XX_PIN_P(3,8),
479 LPC18XX_PIN_P(4,0),
480 LPC18XX_PIN_P(4,1),
481 LPC18XX_PIN_P(4,2),
482 LPC18XX_PIN_P(4,3),
483 LPC18XX_PIN_P(4,4),
484 LPC18XX_PIN_P(4,5),
485 LPC18XX_PIN_P(4,6),
486 LPC18XX_PIN_P(4,7),
487 LPC18XX_PIN_P(4,8),
488 LPC18XX_PIN_P(4,9),
489 LPC18XX_PIN_P(4,10),
490 LPC18XX_PIN_P(5,0),
491 LPC18XX_PIN_P(5,1),
492 LPC18XX_PIN_P(5,2),
493 LPC18XX_PIN_P(5,3),
494 LPC18XX_PIN_P(5,4),
495 LPC18XX_PIN_P(5,5),
496 LPC18XX_PIN_P(5,6),
497 LPC18XX_PIN_P(5,7),
498 LPC18XX_PIN_P(6,0),
499 LPC18XX_PIN_P(6,1),
500 LPC18XX_PIN_P(6,2),
501 LPC18XX_PIN_P(6,3),
502 LPC18XX_PIN_P(6,4),
503 LPC18XX_PIN_P(6,5),
504 LPC18XX_PIN_P(6,6),
505 LPC18XX_PIN_P(6,7),
506 LPC18XX_PIN_P(6,8),
507 LPC18XX_PIN_P(6,9),
508 LPC18XX_PIN_P(6,10),
509 LPC18XX_PIN_P(6,11),
510 LPC18XX_PIN_P(6,12),
511 LPC18XX_PIN_P(7,0),
512 LPC18XX_PIN_P(7,1),
513 LPC18XX_PIN_P(7,2),
514 LPC18XX_PIN_P(7,3),
515 LPC18XX_PIN_P(7,4),
516 LPC18XX_PIN_P(7,5),
517 LPC18XX_PIN_P(7,6),
518 LPC18XX_PIN_P(7,7),
519 LPC18XX_PIN_P(8,0),
520 LPC18XX_PIN_P(8,1),
521 LPC18XX_PIN_P(8,2),
522 LPC18XX_PIN_P(8,3),
523 LPC18XX_PIN_P(8,4),
524 LPC18XX_PIN_P(8,5),
525 LPC18XX_PIN_P(8,6),
526 LPC18XX_PIN_P(8,7),
527 LPC18XX_PIN_P(8,8),
528 LPC18XX_PIN_P(9,0),
529 LPC18XX_PIN_P(9,1),
530 LPC18XX_PIN_P(9,2),
531 LPC18XX_PIN_P(9,3),
532 LPC18XX_PIN_P(9,4),
533 LPC18XX_PIN_P(9,5),
534 LPC18XX_PIN_P(9,6),
535 LPC18XX_PIN_P(a,0),
536 LPC18XX_PIN_P(a,1),
537 LPC18XX_PIN_P(a,2),
538 LPC18XX_PIN_P(a,3),
539 LPC18XX_PIN_P(a,4),
540 LPC18XX_PIN_P(b,0),
541 LPC18XX_PIN_P(b,1),
542 LPC18XX_PIN_P(b,2),
543 LPC18XX_PIN_P(b,3),
544 LPC18XX_PIN_P(b,4),
545 LPC18XX_PIN_P(b,5),
546 LPC18XX_PIN_P(b,6),
547 LPC18XX_PIN_P(c,0),
548 LPC18XX_PIN_P(c,1),
549 LPC18XX_PIN_P(c,2),
550 LPC18XX_PIN_P(c,3),
551 LPC18XX_PIN_P(c,4),
552 LPC18XX_PIN_P(c,5),
553 LPC18XX_PIN_P(c,6),
554 LPC18XX_PIN_P(c,7),
555 LPC18XX_PIN_P(c,8),
556 LPC18XX_PIN_P(c,9),
557 LPC18XX_PIN_P(c,10),
558 LPC18XX_PIN_P(c,11),
559 LPC18XX_PIN_P(c,12),
560 LPC18XX_PIN_P(c,13),
561 LPC18XX_PIN_P(c,14),
562 LPC18XX_PIN_P(d,0),
563 LPC18XX_PIN_P(d,1),
564 LPC18XX_PIN_P(d,2),
565 LPC18XX_PIN_P(d,3),
566 LPC18XX_PIN_P(d,4),
567 LPC18XX_PIN_P(d,5),
568 LPC18XX_PIN_P(d,6),
569 LPC18XX_PIN_P(d,7),
570 LPC18XX_PIN_P(d,8),
571 LPC18XX_PIN_P(d,9),
572 LPC18XX_PIN_P(d,10),
573 LPC18XX_PIN_P(d,11),
574 LPC18XX_PIN_P(d,12),
575 LPC18XX_PIN_P(d,13),
576 LPC18XX_PIN_P(d,14),
577 LPC18XX_PIN_P(d,15),
578 LPC18XX_PIN_P(d,16),
579 LPC18XX_PIN_P(e,0),
580 LPC18XX_PIN_P(e,1),
581 LPC18XX_PIN_P(e,2),
582 LPC18XX_PIN_P(e,3),
583 LPC18XX_PIN_P(e,4),
584 LPC18XX_PIN_P(e,5),
585 LPC18XX_PIN_P(e,6),
586 LPC18XX_PIN_P(e,7),
587 LPC18XX_PIN_P(e,8),
588 LPC18XX_PIN_P(e,9),
589 LPC18XX_PIN_P(e,10),
590 LPC18XX_PIN_P(e,11),
591 LPC18XX_PIN_P(e,12),
592 LPC18XX_PIN_P(e,13),
593 LPC18XX_PIN_P(e,14),
594 LPC18XX_PIN_P(e,15),
595 LPC18XX_PIN_P(f,0),
596 LPC18XX_PIN_P(f,1),
597 LPC18XX_PIN_P(f,2),
598 LPC18XX_PIN_P(f,3),
599 LPC18XX_PIN_P(f,4),
600 LPC18XX_PIN_P(f,5),
601 LPC18XX_PIN_P(f,6),
602 LPC18XX_PIN_P(f,7),
603 LPC18XX_PIN_P(f,8),
604 LPC18XX_PIN_P(f,9),
605 LPC18XX_PIN_P(f,10),
606 LPC18XX_PIN_P(f,11),
607
608 LPC18XX_PIN(clk0, PIN_CLK0),
609 LPC18XX_PIN(clk1, PIN_CLK1),
610 LPC18XX_PIN(clk2, PIN_CLK2),
611 LPC18XX_PIN(clk3, PIN_CLK3),
612 LPC18XX_PIN(usb1_dm, PIN_USB1_DM),
613 LPC18XX_PIN(usb1_dp, PIN_USB1_DP),
614 LPC18XX_PIN(i2c0_scl, PIN_I2C0_SCL),
615 LPC18XX_PIN(i2c0_sda, PIN_I2C0_SDA),
616 };
617
618 static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg)
619 {
620 /* TODO */
621 return -ENOTSUPP;
622 }
623
624 static int lpc18xx_pconf_get_i2c0(enum pin_config_param param, int *arg, u32 reg,
625 unsigned pin)
626 {
627 u8 shift;
628
629 if (pin == PIN_I2C0_SCL)
630 shift = LPC18XX_SCU_I2C0_SCL_SHIFT;
631 else
632 shift = LPC18XX_SCU_I2C0_SDA_SHIFT;
633
634 switch (param) {
635 case PIN_CONFIG_INPUT_ENABLE:
636 if (reg & (LPC18XX_SCU_I2C0_EZI << shift))
637 *arg = 1;
638 else
639 return -EINVAL;
640 break;
641
642 case PIN_CONFIG_SLEW_RATE:
643 if (reg & (LPC18XX_SCU_I2C0_EHD << shift))
644 *arg = 1;
645 else
646 *arg = 0;
647 break;
648
649 case PIN_CONFIG_INPUT_SCHMITT:
650 if (reg & (LPC18XX_SCU_I2C0_EFP << shift))
651 *arg = 3;
652 else
653 *arg = 50;
654 break;
655
656 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
657 if (reg & (LPC18XX_SCU_I2C0_ZIF << shift))
658 return -EINVAL;
659 else
660 *arg = 1;
661 break;
662
663 default:
664 return -ENOTSUPP;
665 }
666
667 return 0;
668 }
669
670 static int lpc18xx_pconf_get_pin(enum pin_config_param param, int *arg, u32 reg,
671 struct lpc18xx_pin_caps *pin_cap)
672 {
673 switch (param) {
674 case PIN_CONFIG_BIAS_DISABLE:
675 if ((!(reg & LPC18XX_SCU_PIN_EPD)) && (reg & LPC18XX_SCU_PIN_EPUN))
676 ;
677 else
678 return -EINVAL;
679 break;
680
681 case PIN_CONFIG_BIAS_PULL_UP:
682 if (reg & LPC18XX_SCU_PIN_EPUN)
683 return -EINVAL;
684 else
685 *arg = 1;
686 break;
687
688 case PIN_CONFIG_BIAS_PULL_DOWN:
689 if (reg & LPC18XX_SCU_PIN_EPD)
690 *arg = 1;
691 else
692 return -EINVAL;
693 break;
694
695 case PIN_CONFIG_INPUT_ENABLE:
696 if (reg & LPC18XX_SCU_PIN_EZI)
697 *arg = 1;
698 else
699 return -EINVAL;
700 break;
701
702 case PIN_CONFIG_SLEW_RATE:
703 if (pin_cap->type == TYPE_HD)
704 return -ENOTSUPP;
705
706 if (reg & LPC18XX_SCU_PIN_EHS)
707 *arg = 1;
708 else
709 *arg = 0;
710 break;
711
712 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
713 if (reg & LPC18XX_SCU_PIN_ZIF)
714 return -EINVAL;
715 else
716 *arg = 1;
717 break;
718
719 case PIN_CONFIG_DRIVE_STRENGTH:
720 if (pin_cap->type != TYPE_HD)
721 return -ENOTSUPP;
722
723 *arg = (reg & LPC18XX_SCU_PIN_EHD_MASK) >> LPC18XX_SCU_PIN_EHD_POS;
724 switch (*arg) {
725 case 3: *arg += 5;
726 case 2: *arg += 5;
727 case 1: *arg += 3;
728 case 0: *arg += 4;
729 }
730 break;
731
732 default:
733 return -ENOTSUPP;
734 }
735
736 return 0;
737 }
738
739 static struct lpc18xx_pin_caps *lpc18xx_get_pin_caps(unsigned pin)
740 {
741 int i;
742
743 for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) {
744 if (lpc18xx_pins[i].number == pin)
745 return lpc18xx_pins[i].drv_data;
746 }
747
748 return NULL;
749 }
750
751 static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin,
752 unsigned long *config)
753 {
754 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
755 enum pin_config_param param = pinconf_to_config_param(*config);
756 struct lpc18xx_pin_caps *pin_cap;
757 int ret, arg = 0;
758 u32 reg;
759
760 pin_cap = lpc18xx_get_pin_caps(pin);
761 if (!pin_cap)
762 return -EINVAL;
763
764 reg = readl(scu->base + pin_cap->offset);
765
766 if (pin_cap->type == TYPE_I2C0)
767 ret = lpc18xx_pconf_get_i2c0(param, &arg, reg, pin);
768 else if (pin_cap->type == TYPE_USB1)
769 ret = lpc18xx_pconf_get_usb1(param, &arg, reg);
770 else
771 ret = lpc18xx_pconf_get_pin(param, &arg, reg, pin_cap);
772
773 if (ret < 0)
774 return ret;
775
776 *config = pinconf_to_config_packed(param, (u16)arg);
777
778 return 0;
779 }
780
781 static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev,
782 enum pin_config_param param,
783 u16 param_val, u32 *reg)
784 {
785 /* TODO */
786 return -ENOTSUPP;
787 }
788
789 static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev,
790 enum pin_config_param param,
791 u16 param_val, u32 *reg,
792 unsigned pin)
793 {
794 u8 shift;
795
796 if (pin == PIN_I2C0_SCL)
797 shift = LPC18XX_SCU_I2C0_SCL_SHIFT;
798 else
799 shift = LPC18XX_SCU_I2C0_SDA_SHIFT;
800
801 switch (param) {
802 case PIN_CONFIG_INPUT_ENABLE:
803 if (param_val)
804 *reg |= (LPC18XX_SCU_I2C0_EZI << shift);
805 else
806 *reg &= ~(LPC18XX_SCU_I2C0_EZI << shift);
807 break;
808
809 case PIN_CONFIG_SLEW_RATE:
810 if (param_val)
811 *reg |= (LPC18XX_SCU_I2C0_EHD << shift);
812 else
813 *reg &= ~(LPC18XX_SCU_I2C0_EHD << shift);
814 break;
815
816 case PIN_CONFIG_INPUT_SCHMITT:
817 if (param_val == 3)
818 *reg |= (LPC18XX_SCU_I2C0_EFP << shift);
819 else if (param_val == 50)
820 *reg &= ~(LPC18XX_SCU_I2C0_EFP << shift);
821 else
822 return -ENOTSUPP;
823 break;
824
825 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
826 if (param)
827 *reg &= ~(LPC18XX_SCU_I2C0_ZIF << shift);
828 else
829 *reg |= (LPC18XX_SCU_I2C0_ZIF << shift);
830 break;
831
832 default:
833 dev_err(pctldev->dev, "Property not supported\n");
834 return -ENOTSUPP;
835 }
836
837 return 0;
838 }
839
840 static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev,
841 enum pin_config_param param,
842 u16 param_val, u32 *reg,
843 struct lpc18xx_pin_caps *pin_cap)
844 {
845 switch (param) {
846 case PIN_CONFIG_BIAS_DISABLE:
847 *reg &= ~LPC18XX_SCU_PIN_EPD;
848 *reg |= LPC18XX_SCU_PIN_EPUN;
849 break;
850
851 case PIN_CONFIG_BIAS_PULL_UP:
852 *reg &= ~LPC18XX_SCU_PIN_EPUN;
853 break;
854
855 case PIN_CONFIG_BIAS_PULL_DOWN:
856 *reg |= LPC18XX_SCU_PIN_EPD;
857 break;
858
859 case PIN_CONFIG_INPUT_ENABLE:
860 if (param_val)
861 *reg |= LPC18XX_SCU_PIN_EZI;
862 else
863 *reg &= ~LPC18XX_SCU_PIN_EZI;
864 break;
865
866 case PIN_CONFIG_SLEW_RATE:
867 if (pin_cap->type == TYPE_HD) {
868 dev_err(pctldev->dev, "Slew rate unsupported on high-drive pins\n");
869 return -ENOTSUPP;
870 }
871
872 if (param_val == 0)
873 *reg &= ~LPC18XX_SCU_PIN_EHS;
874 else
875 *reg |= LPC18XX_SCU_PIN_EHS;
876 break;
877
878 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
879 if (param)
880 *reg &= ~LPC18XX_SCU_PIN_ZIF;
881 else
882 *reg |= LPC18XX_SCU_PIN_ZIF;
883 break;
884
885 case PIN_CONFIG_DRIVE_STRENGTH:
886 if (pin_cap->type != TYPE_HD) {
887 dev_err(pctldev->dev, "Drive strength available only on high-drive pins\n");
888 return -ENOTSUPP;
889 }
890 *reg &= ~LPC18XX_SCU_PIN_EHD_MASK;
891
892 switch (param_val) {
893 case 20: param_val -= 5;
894 case 14: param_val -= 5;
895 case 8: param_val -= 3;
896 case 4: param_val -= 4;
897 break;
898 default:
899 dev_err(pctldev->dev, "Drive strength %u unsupported\n", param_val);
900 return -ENOTSUPP;
901 }
902 *reg |= param_val << LPC18XX_SCU_PIN_EHD_POS;
903 break;
904
905 default:
906 dev_err(pctldev->dev, "Property not supported\n");
907 return -ENOTSUPP;
908 }
909
910 return 0;
911 }
912
913 static int lpc18xx_pconf_set(struct pinctrl_dev *pctldev, unsigned pin,
914 unsigned long *configs, unsigned num_configs)
915 {
916 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
917 struct lpc18xx_pin_caps *pin_cap;
918 enum pin_config_param param;
919 u16 param_val;
920 u32 reg;
921 int ret;
922 int i;
923
924 pin_cap = lpc18xx_get_pin_caps(pin);
925 if (!pin_cap)
926 return -EINVAL;
927
928 reg = readl(scu->base + pin_cap->offset);
929
930 for (i = 0; i < num_configs; i++) {
931 param = pinconf_to_config_param(configs[i]);
932 param_val = pinconf_to_config_argument(configs[i]);
933
934 if (pin_cap->type == TYPE_I2C0)
935 ret = lpc18xx_pconf_set_i2c0(pctldev, param, param_val, &reg, pin);
936 else if (pin_cap->type == TYPE_USB1)
937 ret = lpc18xx_pconf_set_usb1(pctldev, param, param_val, &reg);
938 else
939 ret = lpc18xx_pconf_set_pin(pctldev, param, param_val, &reg, pin_cap);
940
941 if (ret)
942 return ret;
943 }
944
945 writel(reg, scu->base + pin_cap->offset);
946
947 return 0;
948 }
949
950 static const struct pinconf_ops lpc18xx_pconf_ops = {
951 .is_generic = true,
952 .pin_config_get = lpc18xx_pconf_get,
953 .pin_config_set = lpc18xx_pconf_set,
954 };
955
956 static int lpc18xx_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
957 {
958 return ARRAY_SIZE(lpc18xx_function_names);
959 }
960
961 static const char *lpc18xx_pmx_get_func_name(struct pinctrl_dev *pctldev,
962 unsigned function)
963 {
964 return lpc18xx_function_names[function];
965 }
966
967 static int lpc18xx_pmx_get_func_groups(struct pinctrl_dev *pctldev,
968 unsigned function,
969 const char *const **groups,
970 unsigned *const num_groups)
971 {
972 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
973
974 *groups = scu->func[function].groups;
975 *num_groups = scu->func[function].ngroups;
976
977 return 0;
978 }
979
980 static int lpc18xx_pmx_set(struct pinctrl_dev *pctldev, unsigned function,
981 unsigned group)
982 {
983 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
984 struct lpc18xx_pin_caps *pin = lpc18xx_pins[group].drv_data;
985 int func;
986 u32 reg;
987
988 /* Dedicated USB1 and I2C0 pins doesn't support muxing */
989 if (pin->type == TYPE_USB1) {
990 if (function == FUNC_USB1)
991 return 0;
992
993 goto fail;
994 }
995
996 if (pin->type == TYPE_I2C0) {
997 if (function == FUNC_I2C0)
998 return 0;
999
1000 goto fail;
1001 }
1002
1003 if (function == FUNC_ADC && (pin->analog & LPC18XX_ANALOG_PIN)) {
1004 u32 offset;
1005
1006 writel(LPC18XX_SCU_ANALOG_PIN_CFG, scu->base + pin->offset);
1007
1008 if (LPC18XX_ANALOG_ADC(pin->analog) == 0)
1009 offset = LPC18XX_SCU_REG_ENAIO0;
1010 else
1011 offset = LPC18XX_SCU_REG_ENAIO1;
1012
1013 reg = readl(scu->base + offset);
1014 reg |= pin->analog & LPC18XX_ANALOG_BIT_MASK;
1015 writel(reg, scu->base + offset);
1016
1017 return 0;
1018 }
1019
1020 if (function == FUNC_DAC && (pin->analog & LPC18XX_ANALOG_PIN)) {
1021 writel(LPC18XX_SCU_ANALOG_PIN_CFG, scu->base + pin->offset);
1022
1023 reg = readl(scu->base + LPC18XX_SCU_REG_ENAIO2);
1024 reg |= LPC18XX_SCU_REG_ENAIO2_DAC;
1025 writel(reg, scu->base + LPC18XX_SCU_REG_ENAIO2);
1026
1027 return 0;
1028 }
1029
1030 for (func = 0; func < LPC18XX_SCU_FUNC_PER_PIN; func++) {
1031 if (function == pin->functions[func])
1032 break;
1033 }
1034
1035 if (func >= LPC18XX_SCU_FUNC_PER_PIN)
1036 goto fail;
1037
1038 reg = readl(scu->base + pin->offset);
1039 reg &= ~LPC18XX_SCU_PIN_MODE_MASK;
1040 writel(reg | func, scu->base + pin->offset);
1041
1042 return 0;
1043 fail:
1044 dev_err(pctldev->dev, "Pin %s can't be %s\n", lpc18xx_pins[group].name,
1045 lpc18xx_function_names[function]);
1046 return -EINVAL;
1047 }
1048
1049 static const struct pinmux_ops lpc18xx_pmx_ops = {
1050 .get_functions_count = lpc18xx_pmx_get_funcs_count,
1051 .get_function_name = lpc18xx_pmx_get_func_name,
1052 .get_function_groups = lpc18xx_pmx_get_func_groups,
1053 .set_mux = lpc18xx_pmx_set,
1054 };
1055
1056 static int lpc18xx_pctl_get_groups_count(struct pinctrl_dev *pctldev)
1057 {
1058 return ARRAY_SIZE(lpc18xx_pins);
1059 }
1060
1061 static const char *lpc18xx_pctl_get_group_name(struct pinctrl_dev *pctldev,
1062 unsigned group)
1063 {
1064 return lpc18xx_pins[group].name;
1065 }
1066
1067 static int lpc18xx_pctl_get_group_pins(struct pinctrl_dev *pctldev,
1068 unsigned group,
1069 const unsigned **pins,
1070 unsigned *num_pins)
1071 {
1072 *pins = &lpc18xx_pins[group].number;
1073 *num_pins = 1;
1074
1075 return 0;
1076 }
1077
1078 static const struct pinctrl_ops lpc18xx_pctl_ops = {
1079 .get_groups_count = lpc18xx_pctl_get_groups_count,
1080 .get_group_name = lpc18xx_pctl_get_group_name,
1081 .get_group_pins = lpc18xx_pctl_get_group_pins,
1082 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
1083 .dt_free_map = pinctrl_utils_dt_free_map,
1084 };
1085
1086 static struct pinctrl_desc lpc18xx_scu_desc = {
1087 .name = "lpc18xx/43xx-scu",
1088 .pins = lpc18xx_pins,
1089 .npins = ARRAY_SIZE(lpc18xx_pins),
1090 .pctlops = &lpc18xx_pctl_ops,
1091 .pmxops = &lpc18xx_pmx_ops,
1092 .confops = &lpc18xx_pconf_ops,
1093 .owner = THIS_MODULE,
1094 };
1095
1096 static bool lpc18xx_valid_pin_function(unsigned pin, unsigned function)
1097 {
1098 struct lpc18xx_pin_caps *p = lpc18xx_pins[pin].drv_data;
1099 int i;
1100
1101 if (function == FUNC_DAC && p->analog == DAC)
1102 return true;
1103
1104 if (function == FUNC_ADC && p->analog)
1105 return true;
1106
1107 if (function == FUNC_I2C0 && p->type == TYPE_I2C0)
1108 return true;
1109
1110 if (function == FUNC_USB1 && p->type == TYPE_USB1)
1111 return true;
1112
1113 for (i = 0; i < LPC18XX_SCU_FUNC_PER_PIN; i++) {
1114 if (function == p->functions[i])
1115 return true;
1116 }
1117
1118 return false;
1119 }
1120
1121 static int lpc18xx_create_group_func_map(struct device *dev,
1122 struct lpc18xx_scu_data *scu)
1123 {
1124 u16 pins[ARRAY_SIZE(lpc18xx_pins)];
1125 int func, ngroups, i;
1126
1127 for (func = 0; func < FUNC_MAX; ngroups = 0, func++) {
1128
1129 for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) {
1130 if (lpc18xx_valid_pin_function(i, func))
1131 pins[ngroups++] = i;
1132 }
1133
1134 scu->func[func].ngroups = ngroups;
1135 scu->func[func].groups = devm_kzalloc(dev, ngroups *
1136 sizeof(char *), GFP_KERNEL);
1137 if (!scu->func[func].groups)
1138 return -ENOMEM;
1139
1140 for (i = 0; i < ngroups; i++)
1141 scu->func[func].groups[i] = lpc18xx_pins[pins[i]].name;
1142 }
1143
1144 return 0;
1145 }
1146
1147 static int lpc18xx_scu_probe(struct platform_device *pdev)
1148 {
1149 struct lpc18xx_scu_data *scu;
1150 struct resource *res;
1151 int ret;
1152
1153 scu = devm_kzalloc(&pdev->dev, sizeof(*scu), GFP_KERNEL);
1154 if (!scu)
1155 return -ENOMEM;
1156
1157 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1158 scu->base = devm_ioremap_resource(&pdev->dev, res);
1159 if (IS_ERR(scu->base))
1160 return PTR_ERR(scu->base);
1161
1162 scu->clk = devm_clk_get(&pdev->dev, NULL);
1163 if (IS_ERR(scu->clk)) {
1164 dev_err(&pdev->dev, "Input clock not found.\n");
1165 return PTR_ERR(scu->clk);
1166 }
1167
1168 ret = lpc18xx_create_group_func_map(&pdev->dev, scu);
1169 if (ret) {
1170 dev_err(&pdev->dev, "Unable to create group func map.\n");
1171 return ret;
1172 }
1173
1174 ret = clk_prepare_enable(scu->clk);
1175 if (ret) {
1176 dev_err(&pdev->dev, "Unable to enable clock.\n");
1177 return ret;
1178 }
1179
1180 platform_set_drvdata(pdev, scu);
1181
1182 scu->pctl = pinctrl_register(&lpc18xx_scu_desc, &pdev->dev, scu);
1183 if (IS_ERR(scu->pctl)) {
1184 dev_err(&pdev->dev, "Could not register pinctrl driver\n");
1185 clk_disable_unprepare(scu->clk);
1186 return PTR_ERR(scu->pctl);
1187 }
1188
1189 return 0;
1190 }
1191
1192 static int lpc18xx_scu_remove(struct platform_device *pdev)
1193 {
1194 struct lpc18xx_scu_data *scu = platform_get_drvdata(pdev);
1195
1196 pinctrl_unregister(scu->pctl);
1197 clk_disable_unprepare(scu->clk);
1198
1199 return 0;
1200 }
1201
1202 static const struct of_device_id lpc18xx_scu_match[] = {
1203 { .compatible = "nxp,lpc1850-scu" },
1204 {},
1205 };
1206 MODULE_DEVICE_TABLE(of, lpc18xx_scu_match);
1207
1208 static struct platform_driver lpc18xx_scu_driver = {
1209 .probe = lpc18xx_scu_probe,
1210 .remove = lpc18xx_scu_remove,
1211 .driver = {
1212 .name = "lpc18xx-scu",
1213 .of_match_table = lpc18xx_scu_match,
1214 },
1215 };
1216 module_platform_driver(lpc18xx_scu_driver);
1217
1218 MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
1219 MODULE_DESCRIPTION("Pinctrl driver for NXP LPC18xx/43xx SCU");
1220 MODULE_LICENSE("GPL v2");
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