?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE
[linux/fpc-iii.git] / drivers / pinctrl / pinctrl-lpc18xx.c
blobe4677546aec464a339215a3c5f8237d9dcfcdb59
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_LOW_POWER_MODE:
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 /* fall through */
842 case 2: *arg += 5;
843 /* fall through */
844 case 1: *arg += 3;
845 /* fall through */
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_LOW_POWER_MODE:
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 /* fall through */
1061 case 14: param_val -= 5;
1062 /* fall through */
1063 case 8: param_val -= 3;
1064 /* fall through */
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, &reg, pin);
1108 else if (pin_cap->type == TYPE_USB1)
1109 ret = lpc18xx_pconf_set_usb1(pctldev, param, param_val, &reg);
1110 else
1111 ret = lpc18xx_pconf_set_pin(pctldev, param, param_val, &reg, 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);
Linux with added FPC-III support