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android-review.linaro.org / kernel / hikey-linaro / bf7ef8f2d57cd1f5f1846dd58ff9309efad58252 / . / drivers / pinctrl / pinctrl-lpc18xx.c
blob: e053f1fa551203cdf6e2fdeb2e3d8b78e75bdc0f [file] [log] [blame]
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]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>
Paul Gortmaker82359b02016-06-06 22:43:03 -0400[diff] [blame]14#include <linux/init.h>
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]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
Joachim Eastwoodbd6eab92015-07-15 00:25:27 +0200[diff] [blame]40#define LPC18XX_SCU_USB1_EPD BIT(2)
41#define LPC18XX_SCU_USB1_EPWR BIT(4)
42
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]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
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]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
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]64/* LPC18xx pin types */
65enum {
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 */
74enum {
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,
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]125 FUNC_MAX
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]126};
127
128static const char *const lpc18xx_function_names[] = {
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]129 [FUNC_R] = "reserved",
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]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
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]181struct lpc18xx_pmx_func {
182 const char **groups;
183 unsigned ngroups;
184};
185
186struct 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
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]193struct 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) \
212static 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) \
224static 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 */
238LPC_P(0,0, GPIO, SSP1, ENET, SGPIO, R, R, I2S0_TX_WS,I2S1, 0, ND);
239LPC_P(0,1, GPIO, SSP1,ENET_ALT,SGPIO, R, R, ENET, I2S1, 0, ND);
240LPC_P(1,0, GPIO, CTIN, EMC, R, R, SSP0, SGPIO, R, 0, ND);
241LPC_P(1,1, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND);
242LPC_P(1,2, GPIO, CTOUT, EMC, SGPIO, R, SSP0, R, R, 0, ND);
243LPC_P(1,3, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND);
244LPC_P(1,4, GPIO, CTOUT, SGPIO, EMC, USB0, SSP1, R, SDMMC, 0, ND);
245LPC_P(1,5, GPIO, CTOUT, R, EMC, USB0, SSP1, SGPIO, SDMMC, 0, ND);
246LPC_P(1,6, GPIO, CTIN, R, EMC, R, R, SGPIO, SDMMC, 0, ND);
247LPC_P(1,7, GPIO, UART1, CTOUT, EMC, USB0, R, R, R, 0, ND);
248LPC_P(1,8, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
249LPC_P(1,9, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
250LPC_P(1,10, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
251LPC_P(1,11, GPIO, UART1, CTOUT, EMC, R, R, R, SDMMC, 0, ND);
252LPC_P(1,12, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND);
253LPC_P(1,13, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, SDMMC, 0, ND);
254LPC_P(1,14, GPIO, UART1, R, EMC, TIMER0, R, SGPIO, R, 0, ND);
255LPC_P(1,15, GPIO, UART2, SGPIO, ENET, TIMER0, R, R, R, 0, ND);
256LPC_P(1,16, GPIO, UART2, SGPIO,ENET_ALT,TIMER0, R, R, ENET, 0, ND);
257LPC_P(1,17, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, HD);
258LPC_P(1,18, GPIO, UART2, R, ENET, TIMER0, CAN1, SGPIO, R, 0, ND);
259LPC_P(1,19, ENET, SSP1, R, R, CLKOUT, R, I2S0_RX_MCLK,I2S1, 0, ND);
260LPC_P(1,20, GPIO, SSP1, R, ENET, TIMER0, R, SGPIO, R, 0, ND);
261LPC_P(2,0, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, ENET, 0, ND);
262LPC_P(2,1, SGPIO, UART0, EMC, USB0, GPIO, R, TIMER3, R, 0, ND);
263LPC_P(2,2, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND);
264LPC_P(2,3, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD);
265LPC_P(2,4, SGPIO, I2C1, UART3, CTIN, GPIO, R, TIMER3, USB0, 0, HD);
266LPC_P(2,5, SGPIO, CTIN, USB1, ADCTRIG, GPIO, R, TIMER3, USB0, 0, HD);
267LPC_P(2,6, SGPIO, UART0, EMC, USB0, GPIO, CTIN, TIMER3, R, 0, ND);
268LPC_P(2,7, GPIO, CTOUT, UART3, EMC, R, R, TIMER3, R, 0, ND);
269LPC_P(2,8, SGPIO, CTOUT, UART3, EMC, GPIO, R, R, R, 0, ND);
270LPC_P(2,9, GPIO, CTOUT, UART3, EMC, R, R, R, R, 0, ND);
271LPC_P(2,10, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND);
272LPC_P(2,11, GPIO, CTOUT, UART2, EMC, R, R, R, R, 0, ND);
273LPC_P(2,12, GPIO, CTOUT, R, EMC, R, R, R, UART2, 0, ND);
274LPC_P(2,13, GPIO, CTIN, R, EMC, R, R, R, UART2, 0, ND);
275LPC_P(3,0, I2S0_RX_SCK, I2S0_RX_MCLK, I2S0_TX_SCK, I2S0_TX_MCLK,SSP0,R,R,R, 0, ND);
276LPC_P(3,1, I2S0_TX_WS, I2S0_RX_WS,CAN0,USB1,GPIO, R, LCD, R, 0, ND);
277LPC_P(3,2, I2S0_TX_SDA, I2S0_RX_SDA,CAN0,USB1,GPIO, R, LCD, R, 0, ND);
278LPC_P(3,3, R, SPI, SSP0, SPIFI, CGU_OUT,R, I2S0_TX_MCLK, I2S1, 0, HS);
279LPC_P(3,4, GPIO, R, R, SPIFI, UART1, I2S0_TX_WS, I2S1, LCD, 0, ND);
280LPC_P(3,5, GPIO, R, R, SPIFI, UART1, I2S0_TX_SDA,I2S1, LCD, 0, ND);
281LPC_P(3,6, GPIO, SPI, SSP0, SPIFI, R, SSP0_ALT, R, R, 0, ND);
282LPC_P(3,7, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND);
283LPC_P(3,8, R, SPI, SSP0, SPIFI, GPIO, SSP0_ALT, R, R, 0, ND);
284LPC_P(4,0, GPIO, MCTRL, NMI, R, R, LCD, UART3, R, 0, ND);
285LPC_P(4,1, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, ENET, ADC0|1, ND);
286LPC_P(4,2, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, 0, ND);
287LPC_P(4,3, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, ADC0|0, ND);
288LPC_P(4,4, GPIO, CTOUT, LCD, R, R, LCD_ALT, UART3, SGPIO, DAC, ND);
289LPC_P(4,5, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND);
290LPC_P(4,6, GPIO, CTOUT, LCD, R, R, R, R, SGPIO, 0, ND);
291LPC_P(4,7, LCD, CLKIN, R, R, R, R, I2S1,I2S0_TX_SCK, 0, ND);
292LPC_P(4,8, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND);
293LPC_P(4,9, R, CTIN, LCD, R, GPIO, LCD_ALT, CAN1, SGPIO, 0, ND);
294LPC_P(4,10, R, CTIN, LCD, R, GPIO, LCD_ALT, R, SGPIO, 0, ND);
295LPC_P(5,0, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
296LPC_P(5,1, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
297LPC_P(5,2, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
298LPC_P(5,3, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
299LPC_P(5,4, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
300LPC_P(5,5, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
301LPC_P(5,6, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
302LPC_P(5,7, GPIO, MCTRL, EMC, R, UART1, TIMER1, R, R, 0, ND);
303LPC_P(6,0, R, I2S0_RX_MCLK,R, R, I2S0_RX_SCK, R, R, R, 0, ND);
304LPC_P(6,1, GPIO, EMC, UART0, I2S0_RX_WS, R, TIMER2, R, R, 0, ND);
305LPC_P(6,2, GPIO, EMC, UART0, I2S0_RX_SDA, R, TIMER2, R, R, 0, ND);
306LPC_P(6,3, GPIO, USB0, SGPIO, EMC, R, TIMER2, R, R, 0, ND);
307LPC_P(6,4, GPIO, CTIN, UART0, EMC, R, R, R, R, 0, ND);
308LPC_P(6,5, GPIO, CTOUT, UART0, EMC, R, R, R, R, 0, ND);
309LPC_P(6,6, GPIO, EMC, SGPIO, USB0, R, TIMER2, R, R, 0, ND);
310LPC_P(6,7, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND);
311LPC_P(6,8, R, EMC, SGPIO, USB0, GPIO, TIMER2, R, R, 0, ND);
312LPC_P(6,9, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND);
313LPC_P(6,10, GPIO, MCTRL, R, EMC, R, R, R, R, 0, ND);
314LPC_P(6,11, GPIO, R, R, EMC, R, TIMER2, R, R, 0, ND);
315LPC_P(6,12, GPIO, CTOUT, R, EMC, R, R, R, R, 0, ND);
316LPC_P(7,0, GPIO, CTOUT, R, LCD, R, R, R, SGPIO, 0, ND);
317LPC_P(7,1, GPIO, CTOUT,I2S0_TX_WS,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND);
318LPC_P(7,2, GPIO, CTIN,I2S0_TX_SDA,LCD,LCD_ALT, R, UART2, SGPIO, 0, ND);
319LPC_P(7,3, GPIO, CTIN, R, LCD,LCD_ALT, R, R, R, 0, ND);
320LPC_P(7,4, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|4, ND);
321LPC_P(7,5, GPIO, CTOUT, R, LCD,LCD_ALT, TRACE, R, R, ADC0|3, ND);
322LPC_P(7,6, GPIO, CTOUT, R, LCD, R, TRACE, R, R, 0, ND);
323LPC_P(7,7, GPIO, CTOUT, R, LCD, R, TRACE, ENET, SGPIO, ADC1|6, ND);
324LPC_P(8,0, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD);
325LPC_P(8,1, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD);
326LPC_P(8,2, GPIO, USB0, R, MCTRL, SGPIO, R, R, TIMER0, 0, HD);
327LPC_P(8,3, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
328LPC_P(8,4, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
329LPC_P(8,5, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
330LPC_P(8,6, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
331LPC_P(8,7, GPIO, USB1, R, LCD, LCD_ALT, R, R, TIMER0, 0, ND);
332LPC_P(8,8, R, USB1, R, R, R, R,CGU_OUT, I2S1, 0, ND);
333LPC_P(9,0, GPIO, MCTRL, R, R, R, ENET, SGPIO, SSP0, 0, ND);
334LPC_P(9,1, GPIO, MCTRL, R, R, I2S0_TX_WS,ENET, SGPIO, SSP0, 0, ND);
335LPC_P(9,2, GPIO, MCTRL, R, R, I2S0_TX_SDA,ENET,SGPIO, SSP0, 0, ND);
336LPC_P(9,3, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART3, 0, ND);
337LPC_P(9,4, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART3, 0, ND);
338LPC_P(9,5, R, MCTRL, USB1, R, GPIO, ENET, SGPIO, UART0, 0, ND);
339LPC_P(9,6, GPIO, MCTRL, USB1, R, R, ENET, SGPIO, UART0, 0, ND);
340LPC_P(a,0, R, R, R, R, R, I2S1, CGU_OUT, R, 0, ND);
341LPC_P(a,1, GPIO, QEI, R, UART2, R, R, R, R, 0, HD);
342LPC_P(a,2, GPIO, QEI, R, UART2, R, R, R, R, 0, HD);
343LPC_P(a,3, GPIO, QEI, R, R, R, R, R, R, 0, HD);
344LPC_P(a,4, R, CTOUT, R, EMC, GPIO, R, R, R, 0, ND);
345LPC_P(b,0, R, CTOUT, LCD, R, GPIO, R, R, R, 0, ND);
346LPC_P(b,1, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND);
347LPC_P(b,2, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND);
348LPC_P(b,3, R, USB1, LCD, R, GPIO, CTOUT, R, R, 0, ND);
349LPC_P(b,4, R, USB1, LCD, R, GPIO, CTIN, R, R, 0, ND);
350LPC_P(b,5, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, 0, ND);
351LPC_P(b,6, R, USB1, LCD, R, GPIO, CTIN, LCD_ALT, R, ADC0|6, ND);
352LPC_P(c,0, R, USB1, R, ENET, LCD, R, R, SDMMC, ADC1|1, ND);
353LPC_P(c,1, USB1, R, UART1, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
354LPC_P(c,2, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, 0, ND);
355LPC_P(c,3, USB1, R, UART1, ENET, GPIO, R, R, SDMMC, ADC1|0, ND);
356LPC_P(c,4, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
357LPC_P(c,5, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
358LPC_P(c,6, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
359LPC_P(c,7, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
360LPC_P(c,8, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
361LPC_P(c,9, R, USB1, R, ENET, GPIO, R, TIMER3, SDMMC, 0, ND);
362LPC_P(c,10, R, USB1, UART1, R, GPIO, R, TIMER3, SDMMC, 0, ND);
363LPC_P(c,11, R, USB1, UART1, R, GPIO, R, R, SDMMC, 0, ND);
364LPC_P(c,12, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_SDA,SDMMC, 0, ND);
365LPC_P(c,13, R, R, UART1, R, GPIO, SGPIO, I2S0_TX_WS, SDMMC, 0, ND);
366LPC_P(c,14, R, R, UART1, R, GPIO, SGPIO, ENET, SDMMC, 0, ND);
367LPC_P(d,0, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
368LPC_P(d,1, R, R, EMC, R, GPIO, SDMMC, R, SGPIO, 0, ND);
369LPC_P(d,2, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
370LPC_P(d,3, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
371LPC_P(d,4, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
372LPC_P(d,5, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
373LPC_P(d,6, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
374LPC_P(d,7, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND);
375LPC_P(d,8, R, CTIN, EMC, R, GPIO, R, R, SGPIO, 0, ND);
376LPC_P(d,9, R, CTOUT, EMC, R, GPIO, R, R, SGPIO, 0, ND);
377LPC_P(d,10, R, CTIN, EMC, R, GPIO, R, R, R, 0, ND);
378LPC_P(d,11, R, R, EMC, R, GPIO, USB1, CTOUT, R, 0, ND);
379LPC_P(d,12, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND);
380LPC_P(d,13, R, CTIN, EMC, R, GPIO, R, CTOUT, R, 0, ND);
381LPC_P(d,14, R, R, EMC, R, GPIO, R, CTOUT, R, 0, ND);
382LPC_P(d,15, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND);
383LPC_P(d,16, R, R, EMC, R, GPIO, SDMMC, CTOUT, R, 0, ND);
384LPC_P(e,0, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND);
385LPC_P(e,1, R, R, R, EMC, GPIO, CAN1, R, R, 0, ND);
386LPC_P(e,2,ADCTRIG, CAN0, R, EMC, GPIO, R, R, R, 0, ND);
387LPC_P(e,3, R, CAN0,ADCTRIG, EMC, GPIO, R, R, R, 0, ND);
388LPC_P(e,4, R, NMI, R, EMC, GPIO, R, R, R, 0, ND);
389LPC_P(e,5, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
390LPC_P(e,6, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
391LPC_P(e,7, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
392LPC_P(e,8, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
393LPC_P(e,9, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND);
394LPC_P(e,10, R, CTIN, UART1, EMC, GPIO, R, R, R, 0, ND);
395LPC_P(e,11, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
396LPC_P(e,12, R, CTOUT, UART1, EMC, GPIO, R, R, R, 0, ND);
397LPC_P(e,13, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND);
398LPC_P(e,14, R, R, R, EMC, GPIO, R, R, R, 0, ND);
399LPC_P(e,15, R, CTOUT, I2C1, EMC, GPIO, R, R, R, 0, ND);
400LPC_P(f,0, SSP0, CLKIN, R, R, R, R, R, I2S1, 0, ND);
401LPC_P(f,1, R, R, SSP0, R, GPIO, R, SGPIO, R, 0, ND);
402LPC_P(f,2, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND);
403LPC_P(f,3, R, UART3, SSP0, R, GPIO, R, SGPIO, R, 0, ND);
404LPC_P(f,4, SSP1, CLKIN, TRACE, R, R, R, I2S0_TX_MCLK,I2S0_RX_SCK, 0, ND);
405LPC_P(f,5, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, R, ADC1|4, ND);
406LPC_P(f,6, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|3, ND);
407LPC_P(f,7, R, UART3, SSP1, TRACE, GPIO, R, SGPIO, I2S1, ADC1|7, ND);
408LPC_P(f,8, R, UART0, CTIN, TRACE, GPIO, R, SGPIO, R, ADC0|2, ND);
409LPC_P(f,9, R, UART0, CTOUT, R, GPIO, R, SGPIO, R, ADC1|2, ND);
410LPC_P(f,10, R, UART0, R, R, GPIO, R, SDMMC, R, ADC0|5, ND);
411LPC_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 */
414LPC_N(clk0, 0xc00, EMC, CLKOUT, R, R, SDMMC, EMC_ALT, SSP1, ENET, 0, HS);
415LPC_N(clk1, 0xc04, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS);
416LPC_N(clk2, 0xc08, EMC, CLKOUT, R, R, SDMMC, EMC_ALT,I2S0_TX_MCLK,I2S1, 0, HS);
417LPC_N(clk3, 0xc0c, EMC, CLKOUT, R, R, R, CGU_OUT, R, I2S1, 0, HS);
418LPC_N(usb1_dm, 0xc80, R, R, R, R, R, R, R, R, 0, USB1);
419LPC_N(usb1_dp, 0xc80, R, R, R, R, R, R, R, R, 0, USB1);
420LPC_N(i2c0_scl, 0xc84, R, R, R, R, R, R, R, R, 0, I2C0);
421LPC_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 */
430enum {
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
447static 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
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]633/**
634 * enum lpc18xx_pin_config_param - possible pin configuration parameters
635 * @PIN_CONFIG_GPIO_PIN_INT: route gpio to the gpio pin interrupt
636 * controller.
637 */
638enum lpc18xx_pin_config_param {
639 PIN_CONFIG_GPIO_PIN_INT = PIN_CONFIG_END + 1,
640};
641
642static const struct pinconf_generic_params lpc18xx_params[] = {
643 {"nxp,gpio-pin-interrupt", PIN_CONFIG_GPIO_PIN_INT, 0},
644};
645
646#ifdef CONFIG_DEBUG_FS
647static const struct pin_config_item lpc18xx_conf_items[ARRAY_SIZE(lpc18xx_params)] = {
648 PCONFDUMP(PIN_CONFIG_GPIO_PIN_INT, "gpio pin int", NULL, true),
649};
650#endif
651
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]652static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg)
653{
Joachim Eastwoodbd6eab92015-07-15 00:25:27 +0200[diff] [blame]654 switch (param) {
655 case PIN_CONFIG_LOW_POWER_MODE:
656 if (reg & LPC18XX_SCU_USB1_EPWR)
657 *arg = 0;
658 else
659 *arg = 1;
660 break;
661
662 case PIN_CONFIG_BIAS_DISABLE:
663 if (reg & LPC18XX_SCU_USB1_EPD)
664 return -EINVAL;
665 break;
666
667 case PIN_CONFIG_BIAS_PULL_DOWN:
668 if (reg & LPC18XX_SCU_USB1_EPD)
669 *arg = 1;
670 else
671 return -EINVAL;
672 break;
673
674 default:
675 return -ENOTSUPP;
676 }
677
678 return 0;
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]679}
680
681static int lpc18xx_pconf_get_i2c0(enum pin_config_param param, int *arg, u32 reg,
682 unsigned pin)
683{
684 u8 shift;
685
686 if (pin == PIN_I2C0_SCL)
687 shift = LPC18XX_SCU_I2C0_SCL_SHIFT;
688 else
689 shift = LPC18XX_SCU_I2C0_SDA_SHIFT;
690
691 switch (param) {
692 case PIN_CONFIG_INPUT_ENABLE:
693 if (reg & (LPC18XX_SCU_I2C0_EZI << shift))
694 *arg = 1;
695 else
696 return -EINVAL;
697 break;
698
699 case PIN_CONFIG_SLEW_RATE:
700 if (reg & (LPC18XX_SCU_I2C0_EHD << shift))
701 *arg = 1;
702 else
703 *arg = 0;
704 break;
705
706 case PIN_CONFIG_INPUT_SCHMITT:
707 if (reg & (LPC18XX_SCU_I2C0_EFP << shift))
708 *arg = 3;
709 else
710 *arg = 50;
711 break;
712
713 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
714 if (reg & (LPC18XX_SCU_I2C0_ZIF << shift))
715 return -EINVAL;
716 else
717 *arg = 1;
718 break;
719
720 default:
721 return -ENOTSUPP;
722 }
723
724 return 0;
725}
726
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]727static int lpc18xx_pin_to_gpio(struct pinctrl_dev *pctldev, unsigned pin)
728{
729 struct pinctrl_gpio_range *range;
730
731 range = pinctrl_find_gpio_range_from_pin_nolock(pctldev, pin);
732 if (!range)
733 return -EINVAL;
734
735 return pin - range->pin_base + range->base;
736}
737
738static int lpc18xx_get_pintsel(void __iomem *addr, u32 val, int *arg)
739{
740 u32 reg_val;
741 int i;
742
743 reg_val = readl(addr);
744 for (i = 0; i < LPC18XX_SCU_IRQ_PER_PINTSEL; i++) {
745 if ((reg_val & LPC18XX_SCU_PINTSEL_VAL_MASK) == val)
746 return 0;
747
748 reg_val >>= BITS_PER_BYTE;
749 *arg += 1;
750 }
751
752 return -EINVAL;
753}
754
755static u32 lpc18xx_gpio_to_pintsel_val(int gpio)
756{
757 unsigned int gpio_port, gpio_pin;
758
759 gpio_port = gpio / LPC18XX_GPIO_PINS_PER_PORT;
760 gpio_pin = gpio % LPC18XX_GPIO_PINS_PER_PORT;
761
762 return gpio_pin | (gpio_port << LPC18XX_SCU_PINTSEL_PORT_SHIFT);
763}
764
765static int lpc18xx_pconf_get_gpio_pin_int(struct pinctrl_dev *pctldev,
766 int *arg, unsigned pin)
767{
768 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
769 int gpio, ret;
770 u32 val;
771
772 gpio = lpc18xx_pin_to_gpio(pctldev, pin);
773 if (gpio < 0)
774 return -ENOTSUPP;
775
776 val = lpc18xx_gpio_to_pintsel_val(gpio);
777
778 /*
779 * Check if this pin has been enabled as a interrupt in any of the two
780 * PINTSEL registers. *arg indicates which interrupt number (0-7).
781 */
782 *arg = 0;
783 ret = lpc18xx_get_pintsel(scu->base + LPC18XX_SCU_PINTSEL0, val, arg);
784 if (ret == 0)
785 return ret;
786
787 return lpc18xx_get_pintsel(scu->base + LPC18XX_SCU_PINTSEL1, val, arg);
788}
789
790static int lpc18xx_pconf_get_pin(struct pinctrl_dev *pctldev, unsigned param,
791 int *arg, u32 reg, unsigned pin,
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]792 struct lpc18xx_pin_caps *pin_cap)
793{
794 switch (param) {
795 case PIN_CONFIG_BIAS_DISABLE:
796 if ((!(reg & LPC18XX_SCU_PIN_EPD)) && (reg & LPC18XX_SCU_PIN_EPUN))
797 ;
798 else
799 return -EINVAL;
800 break;
801
802 case PIN_CONFIG_BIAS_PULL_UP:
803 if (reg & LPC18XX_SCU_PIN_EPUN)
804 return -EINVAL;
805 else
806 *arg = 1;
807 break;
808
809 case PIN_CONFIG_BIAS_PULL_DOWN:
810 if (reg & LPC18XX_SCU_PIN_EPD)
811 *arg = 1;
812 else
813 return -EINVAL;
814 break;
815
816 case PIN_CONFIG_INPUT_ENABLE:
817 if (reg & LPC18XX_SCU_PIN_EZI)
818 *arg = 1;
819 else
820 return -EINVAL;
821 break;
822
823 case PIN_CONFIG_SLEW_RATE:
824 if (pin_cap->type == TYPE_HD)
825 return -ENOTSUPP;
826
827 if (reg & LPC18XX_SCU_PIN_EHS)
828 *arg = 1;
829 else
830 *arg = 0;
831 break;
832
833 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
834 if (reg & LPC18XX_SCU_PIN_ZIF)
835 return -EINVAL;
836 else
837 *arg = 1;
838 break;
839
840 case PIN_CONFIG_DRIVE_STRENGTH:
841 if (pin_cap->type != TYPE_HD)
842 return -ENOTSUPP;
843
844 *arg = (reg & LPC18XX_SCU_PIN_EHD_MASK) >> LPC18XX_SCU_PIN_EHD_POS;
845 switch (*arg) {
846 case 3: *arg += 5;
847 case 2: *arg += 5;
848 case 1: *arg += 3;
849 case 0: *arg += 4;
850 }
851 break;
852
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]853 case PIN_CONFIG_GPIO_PIN_INT:
854 return lpc18xx_pconf_get_gpio_pin_int(pctldev, arg, pin);
855
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]856 default:
857 return -ENOTSUPP;
858 }
859
860 return 0;
861}
862
Joachim Eastwood403fbde2015-05-06 19:11:21 +0200[diff] [blame]863static struct lpc18xx_pin_caps *lpc18xx_get_pin_caps(unsigned pin)
864{
865 int i;
866
867 for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) {
868 if (lpc18xx_pins[i].number == pin)
869 return lpc18xx_pins[i].drv_data;
870 }
871
872 return NULL;
873}
874
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]875static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin,
876 unsigned long *config)
877{
878 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
879 enum pin_config_param param = pinconf_to_config_param(*config);
880 struct lpc18xx_pin_caps *pin_cap;
881 int ret, arg = 0;
882 u32 reg;
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]883
Joachim Eastwood403fbde2015-05-06 19:11:21 +0200[diff] [blame]884 pin_cap = lpc18xx_get_pin_caps(pin);
885 if (!pin_cap)
886 return -EINVAL;
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]887
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]888 reg = readl(scu->base + pin_cap->offset);
889
890 if (pin_cap->type == TYPE_I2C0)
891 ret = lpc18xx_pconf_get_i2c0(param, &arg, reg, pin);
892 else if (pin_cap->type == TYPE_USB1)
893 ret = lpc18xx_pconf_get_usb1(param, &arg, reg);
894 else
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]895 ret = lpc18xx_pconf_get_pin(pctldev, param, &arg, reg, pin, pin_cap);
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]896
897 if (ret < 0)
898 return ret;
899
900 *config = pinconf_to_config_packed(param, (u16)arg);
901
902 return 0;
903}
904
905static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev,
906 enum pin_config_param param,
907 u16 param_val, u32 *reg)
908{
Joachim Eastwoodbd6eab92015-07-15 00:25:27 +0200[diff] [blame]909 switch (param) {
910 case PIN_CONFIG_LOW_POWER_MODE:
911 if (param_val)
912 *reg &= ~LPC18XX_SCU_USB1_EPWR;
913 else
914 *reg |= LPC18XX_SCU_USB1_EPWR;
915 break;
916
917 case PIN_CONFIG_BIAS_DISABLE:
918 *reg &= ~LPC18XX_SCU_USB1_EPD;
919 break;
920
921 case PIN_CONFIG_BIAS_PULL_DOWN:
922 *reg |= LPC18XX_SCU_USB1_EPD;
923 break;
924
925 default:
926 dev_err(pctldev->dev, "Property not supported\n");
927 return -ENOTSUPP;
928 }
929
930 return 0;
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]931}
932
933static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev,
934 enum pin_config_param param,
935 u16 param_val, u32 *reg,
936 unsigned pin)
937{
938 u8 shift;
939
940 if (pin == PIN_I2C0_SCL)
941 shift = LPC18XX_SCU_I2C0_SCL_SHIFT;
942 else
943 shift = LPC18XX_SCU_I2C0_SDA_SHIFT;
944
945 switch (param) {
946 case PIN_CONFIG_INPUT_ENABLE:
947 if (param_val)
948 *reg |= (LPC18XX_SCU_I2C0_EZI << shift);
949 else
950 *reg &= ~(LPC18XX_SCU_I2C0_EZI << shift);
951 break;
952
953 case PIN_CONFIG_SLEW_RATE:
954 if (param_val)
955 *reg |= (LPC18XX_SCU_I2C0_EHD << shift);
956 else
957 *reg &= ~(LPC18XX_SCU_I2C0_EHD << shift);
958 break;
959
960 case PIN_CONFIG_INPUT_SCHMITT:
961 if (param_val == 3)
962 *reg |= (LPC18XX_SCU_I2C0_EFP << shift);
963 else if (param_val == 50)
964 *reg &= ~(LPC18XX_SCU_I2C0_EFP << shift);
965 else
966 return -ENOTSUPP;
967 break;
968
969 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
Joachim Eastwood681ccdc2015-07-15 00:25:26 +0200[diff] [blame]970 if (param_val)
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]971 *reg &= ~(LPC18XX_SCU_I2C0_ZIF << shift);
972 else
973 *reg |= (LPC18XX_SCU_I2C0_ZIF << shift);
974 break;
975
976 default:
977 dev_err(pctldev->dev, "Property not supported\n");
978 return -ENOTSUPP;
979 }
980
981 return 0;
982}
983
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]984static int lpc18xx_pconf_set_gpio_pin_int(struct pinctrl_dev *pctldev,
985 u16 param_val, unsigned pin)
986{
987 struct lpc18xx_scu_data *scu = pinctrl_dev_get_drvdata(pctldev);
988 u32 val, reg_val, reg_offset = LPC18XX_SCU_PINTSEL0;
989 int gpio;
990
991 if (param_val >= LPC18XX_GPIO_PIN_INT_MAX)
992 return -EINVAL;
993
994 gpio = lpc18xx_pin_to_gpio(pctldev, pin);
995 if (gpio < 0)
996 return -ENOTSUPP;
997
998 val = lpc18xx_gpio_to_pintsel_val(gpio);
999
1000 reg_offset += (param_val / LPC18XX_SCU_IRQ_PER_PINTSEL) * sizeof(u32);
1001
1002 reg_val = readl(scu->base + reg_offset);
1003 reg_val &= ~LPC18XX_SCU_PINTSEL_VAL(LPC18XX_SCU_PINTSEL_VAL_MASK, param_val);
1004 reg_val |= LPC18XX_SCU_PINTSEL_VAL(val, param_val);
1005 writel(reg_val, scu->base + reg_offset);
1006
1007 return 0;
1008}
1009
1010static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, unsigned param,
1011 u16 param_val, u32 *reg, unsigned pin,
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1012 struct lpc18xx_pin_caps *pin_cap)
1013{
1014 switch (param) {
1015 case PIN_CONFIG_BIAS_DISABLE:
1016 *reg &= ~LPC18XX_SCU_PIN_EPD;
1017 *reg |= LPC18XX_SCU_PIN_EPUN;
1018 break;
1019
1020 case PIN_CONFIG_BIAS_PULL_UP:
1021 *reg &= ~LPC18XX_SCU_PIN_EPUN;
1022 break;
1023
1024 case PIN_CONFIG_BIAS_PULL_DOWN:
1025 *reg |= LPC18XX_SCU_PIN_EPD;
1026 break;
1027
1028 case PIN_CONFIG_INPUT_ENABLE:
1029 if (param_val)
1030 *reg |= LPC18XX_SCU_PIN_EZI;
1031 else
1032 *reg &= ~LPC18XX_SCU_PIN_EZI;
1033 break;
1034
1035 case PIN_CONFIG_SLEW_RATE:
1036 if (pin_cap->type == TYPE_HD) {
1037 dev_err(pctldev->dev, "Slew rate unsupported on high-drive pins\n");
1038 return -ENOTSUPP;
1039 }
1040
1041 if (param_val == 0)
1042 *reg &= ~LPC18XX_SCU_PIN_EHS;
1043 else
1044 *reg |= LPC18XX_SCU_PIN_EHS;
1045 break;
1046
1047 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
Joachim Eastwood681ccdc2015-07-15 00:25:26 +0200[diff] [blame]1048 if (param_val)
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1049 *reg &= ~LPC18XX_SCU_PIN_ZIF;
1050 else
1051 *reg |= LPC18XX_SCU_PIN_ZIF;
1052 break;
1053
1054 case PIN_CONFIG_DRIVE_STRENGTH:
1055 if (pin_cap->type != TYPE_HD) {
1056 dev_err(pctldev->dev, "Drive strength available only on high-drive pins\n");
1057 return -ENOTSUPP;
1058 }
1059 *reg &= ~LPC18XX_SCU_PIN_EHD_MASK;
1060
1061 switch (param_val) {
1062 case 20: param_val -= 5;
1063 case 14: param_val -= 5;
1064 case 8: param_val -= 3;
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
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]1074 case PIN_CONFIG_GPIO_PIN_INT:
1075 return lpc18xx_pconf_set_gpio_pin_int(pctldev, param_val, pin);
1076
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1077 default:
1078 dev_err(pctldev->dev, "Property not supported\n");
1079 return -ENOTSUPP;
1080 }
1081
1082 return 0;
1083}
1084
1085static 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 u16 param_val;
1092 u32 reg;
1093 int ret;
1094 int i;
1095
Joachim Eastwood403fbde2015-05-06 19:11:21 +0200[diff] [blame]1096 pin_cap = lpc18xx_get_pin_caps(pin);
1097 if (!pin_cap)
1098 return -EINVAL;
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1099
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]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
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]1111 ret = lpc18xx_pconf_set_pin(pctldev, param, param_val, &reg, pin, pin_cap);
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1112
1113 if (ret)
1114 return ret;
1115 }
1116
1117 writel(reg, scu->base + pin_cap->offset);
1118
1119 return 0;
1120}
1121
1122static 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
1128static int lpc18xx_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
1129{
1130 return ARRAY_SIZE(lpc18xx_function_names);
1131}
1132
1133static const char *lpc18xx_pmx_get_func_name(struct pinctrl_dev *pctldev,
1134 unsigned function)
1135{
1136 return lpc18xx_function_names[function];
1137}
1138
1139static int lpc18xx_pmx_get_func_groups(struct pinctrl_dev *pctldev,
1140 unsigned function,
1141 const char *const **groups,
1142 unsigned *const num_groups)
1143{
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]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
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1149 return 0;
1150}
1151
1152static 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;
1215fail:
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
1221static 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
1228static int lpc18xx_pctl_get_groups_count(struct pinctrl_dev *pctldev)
1229{
1230 return ARRAY_SIZE(lpc18xx_pins);
1231}
1232
1233static const char *lpc18xx_pctl_get_group_name(struct pinctrl_dev *pctldev,
1234 unsigned group)
1235{
1236 return lpc18xx_pins[group].name;
1237}
1238
1239static 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
1250static 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,
Irina Tirdead32f7fd2016-03-31 14:44:42 +0300[diff] [blame]1255 .dt_free_map = pinctrl_utils_free_map,
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1256};
1257
1258static 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,
Joachim Eastwood81825b12016-02-25 22:44:38 +0100[diff] [blame]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
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1270 .owner = THIS_MODULE,
1271};
1272
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]1273static 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
1298static 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
Colin Ian King5e9a2072016-02-24 17:32:50 +0000[diff] [blame]1304 for (func = 0; func < FUNC_MAX; func++) {
1305 for (ngroups = 0, i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) {
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]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_kzalloc(dev, ngroups *
1312 sizeof(char *), GFP_KERNEL);
1313 if (!scu->func[func].groups)
1314 return -ENOMEM;
1315
1316 for (i = 0; i < ngroups; i++)
1317 scu->func[func].groups[i] = lpc18xx_pins[pins[i]].name;
1318 }
1319
1320 return 0;
1321}
1322
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1323static int lpc18xx_scu_probe(struct platform_device *pdev)
1324{
1325 struct lpc18xx_scu_data *scu;
1326 struct resource *res;
1327 int ret;
1328
1329 scu = devm_kzalloc(&pdev->dev, sizeof(*scu), GFP_KERNEL);
1330 if (!scu)
1331 return -ENOMEM;
1332
1333 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1334 scu->base = devm_ioremap_resource(&pdev->dev, res);
1335 if (IS_ERR(scu->base))
1336 return PTR_ERR(scu->base);
1337
1338 scu->clk = devm_clk_get(&pdev->dev, NULL);
1339 if (IS_ERR(scu->clk)) {
1340 dev_err(&pdev->dev, "Input clock not found.\n");
1341 return PTR_ERR(scu->clk);
1342 }
1343
Joachim Eastwood16a48512015-05-14 14:45:58 +0200[diff] [blame]1344 ret = lpc18xx_create_group_func_map(&pdev->dev, scu);
1345 if (ret) {
1346 dev_err(&pdev->dev, "Unable to create group func map.\n");
1347 return ret;
1348 }
1349
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1350 ret = clk_prepare_enable(scu->clk);
1351 if (ret) {
1352 dev_err(&pdev->dev, "Unable to enable clock.\n");
1353 return ret;
1354 }
1355
1356 platform_set_drvdata(pdev, scu);
1357
Laxman Dewangan19ba9002016-02-24 14:44:07 +0530[diff] [blame]1358 scu->pctl = devm_pinctrl_register(&pdev->dev, &lpc18xx_scu_desc, scu);
Masahiro Yamada323de9e2015-06-09 13:01:16 +0900[diff] [blame]1359 if (IS_ERR(scu->pctl)) {
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1360 dev_err(&pdev->dev, "Could not register pinctrl driver\n");
1361 clk_disable_unprepare(scu->clk);
Masahiro Yamada323de9e2015-06-09 13:01:16 +0900[diff] [blame]1362 return PTR_ERR(scu->pctl);
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1363 }
1364
1365 return 0;
1366}
1367
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1368static const struct of_device_id lpc18xx_scu_match[] = {
1369 { .compatible = "nxp,lpc1850-scu" },
1370 {},
1371};
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1372
1373static struct platform_driver lpc18xx_scu_driver = {
1374 .probe = lpc18xx_scu_probe,
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1375 .driver = {
1376 .name = "lpc18xx-scu",
1377 .of_match_table = lpc18xx_scu_match,
Paul Gortmaker82359b02016-06-06 22:43:03 -0400[diff] [blame]1378 .suppress_bind_attrs = true,
Joachim Eastwood2f77ac92015-04-28 00:14:08 +0200[diff] [blame]1379 },
1380};
Paul Gortmaker82359b02016-06-06 22:43:03 -0400[diff] [blame]1381builtin_platform_driver(lpc18xx_scu_driver);