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-rw-r--r--drivers/input/touchscreen/Kconfig1
-rw-r--r--drivers/input/touchscreen/ucb1400_ts.c382
2 files changed, 135 insertions, 248 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 6e60a97a234c..fcabff9b39b1 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -220,6 +220,7 @@ config TOUCHSCREEN_ATMEL_TSADCC
220config TOUCHSCREEN_UCB1400 220config TOUCHSCREEN_UCB1400
221 tristate "Philips UCB1400 touchscreen" 221 tristate "Philips UCB1400 touchscreen"
222 select AC97_BUS 222 select AC97_BUS
223 depends on UCB1400_CORE
223 help 224 help
224 This enables support for the Philips UCB1400 touchscreen interface. 225 This enables support for the Philips UCB1400 touchscreen interface.
225 The UCB1400 is an AC97 audio codec. The touchscreen interface 226 The UCB1400 is an AC97 audio codec. The touchscreen interface
diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index bce018e45bce..54986627def0 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -5,6 +5,10 @@
5 * Created: September 25, 2006 5 * Created: September 25, 2006
6 * Copyright: MontaVista Software, Inc. 6 * Copyright: MontaVista Software, Inc.
7 * 7 *
8 * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
9 * If something doesnt work and it worked before spliting, e-mail me,
10 * dont bother Nicolas please ;-)
11 *
8 * This program is free software; you can redistribute it and/or modify 12 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as 13 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation. 14 * published by the Free Software Foundation.
@@ -25,124 +29,16 @@
25#include <linux/slab.h> 29#include <linux/slab.h>
26#include <linux/kthread.h> 30#include <linux/kthread.h>
27#include <linux/freezer.h> 31#include <linux/freezer.h>
28 32#include <linux/ucb1400.h>
29#include <sound/core.h>
30#include <sound/ac97_codec.h>
31
32
33/*
34 * Interesting UCB1400 AC-link registers
35 */
36
37#define UCB_IE_RIS 0x5e
38#define UCB_IE_FAL 0x60
39#define UCB_IE_STATUS 0x62
40#define UCB_IE_CLEAR 0x62
41#define UCB_IE_ADC (1 << 11)
42#define UCB_IE_TSPX (1 << 12)
43
44#define UCB_TS_CR 0x64
45#define UCB_TS_CR_TSMX_POW (1 << 0)
46#define UCB_TS_CR_TSPX_POW (1 << 1)
47#define UCB_TS_CR_TSMY_POW (1 << 2)
48#define UCB_TS_CR_TSPY_POW (1 << 3)
49#define UCB_TS_CR_TSMX_GND (1 << 4)
50#define UCB_TS_CR_TSPX_GND (1 << 5)
51#define UCB_TS_CR_TSMY_GND (1 << 6)
52#define UCB_TS_CR_TSPY_GND (1 << 7)
53#define UCB_TS_CR_MODE_INT (0 << 8)
54#define UCB_TS_CR_MODE_PRES (1 << 8)
55#define UCB_TS_CR_MODE_POS (2 << 8)
56#define UCB_TS_CR_BIAS_ENA (1 << 11)
57#define UCB_TS_CR_TSPX_LOW (1 << 12)
58#define UCB_TS_CR_TSMX_LOW (1 << 13)
59
60#define UCB_ADC_CR 0x66
61#define UCB_ADC_SYNC_ENA (1 << 0)
62#define UCB_ADC_VREFBYP_CON (1 << 1)
63#define UCB_ADC_INP_TSPX (0 << 2)
64#define UCB_ADC_INP_TSMX (1 << 2)
65#define UCB_ADC_INP_TSPY (2 << 2)
66#define UCB_ADC_INP_TSMY (3 << 2)
67#define UCB_ADC_INP_AD0 (4 << 2)
68#define UCB_ADC_INP_AD1 (5 << 2)
69#define UCB_ADC_INP_AD2 (6 << 2)
70#define UCB_ADC_INP_AD3 (7 << 2)
71#define UCB_ADC_EXT_REF (1 << 5)
72#define UCB_ADC_START (1 << 7)
73#define UCB_ADC_ENA (1 << 15)
74
75#define UCB_ADC_DATA 0x68
76#define UCB_ADC_DAT_VALID (1 << 15)
77#define UCB_ADC_DAT_VALUE(x) ((x) & 0x3ff)
78
79#define UCB_ID 0x7e
80#define UCB_ID_1400 0x4304
81
82
83struct ucb1400 {
84 struct snd_ac97 *ac97;
85 struct input_dev *ts_idev;
86
87 int irq;
88
89 wait_queue_head_t ts_wait;
90 struct task_struct *ts_task;
91
92 unsigned int irq_pending; /* not bit field shared */
93 unsigned int ts_restart:1;
94 unsigned int adcsync:1;
95};
96 33
97static int adcsync; 34static int adcsync;
98static int ts_delay = 55; /* us */ 35static int ts_delay = 55; /* us */
99static int ts_delay_pressure; /* us */ 36static int ts_delay_pressure; /* us */
100 37
101static inline u16 ucb1400_reg_read(struct ucb1400 *ucb, u16 reg)
102{
103 return ucb->ac97->bus->ops->read(ucb->ac97, reg);
104}
105
106static inline void ucb1400_reg_write(struct ucb1400 *ucb, u16 reg, u16 val)
107{
108 ucb->ac97->bus->ops->write(ucb->ac97, reg, val);
109}
110
111static inline void ucb1400_adc_enable(struct ucb1400 *ucb)
112{
113 ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA);
114}
115
116static unsigned int ucb1400_adc_read(struct ucb1400 *ucb, u16 adc_channel)
117{
118 unsigned int val;
119
120 if (ucb->adcsync)
121 adc_channel |= UCB_ADC_SYNC_ENA;
122
123 ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | adc_channel);
124 ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | adc_channel | UCB_ADC_START);
125
126 for (;;) {
127 val = ucb1400_reg_read(ucb, UCB_ADC_DATA);
128 if (val & UCB_ADC_DAT_VALID)
129 break;
130 /* yield to other processes */
131 schedule_timeout_uninterruptible(1);
132 }
133
134 return UCB_ADC_DAT_VALUE(val);
135}
136
137static inline void ucb1400_adc_disable(struct ucb1400 *ucb)
138{
139 ucb1400_reg_write(ucb, UCB_ADC_CR, 0);
140}
141
142/* Switch to interrupt mode. */ 38/* Switch to interrupt mode. */
143static inline void ucb1400_ts_mode_int(struct ucb1400 *ucb) 39static inline void ucb1400_ts_mode_int(struct snd_ac97 *ac97)
144{ 40{
145 ucb1400_reg_write(ucb, UCB_TS_CR, 41 ucb1400_reg_write(ac97, UCB_TS_CR,
146 UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW | 42 UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
147 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND | 43 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
148 UCB_TS_CR_MODE_INT); 44 UCB_TS_CR_MODE_INT);
@@ -152,14 +48,14 @@ static inline void ucb1400_ts_mode_int(struct ucb1400 *ucb)
152 * Switch to pressure mode, and read pressure. We don't need to wait 48 * Switch to pressure mode, and read pressure. We don't need to wait
153 * here, since both plates are being driven. 49 * here, since both plates are being driven.
154 */ 50 */
155static inline unsigned int ucb1400_ts_read_pressure(struct ucb1400 *ucb) 51static inline unsigned int ucb1400_ts_read_pressure(struct ucb1400_ts *ucb)
156{ 52{
157 ucb1400_reg_write(ucb, UCB_TS_CR, 53 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
158 UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW | 54 UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
159 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND | 55 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
160 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 56 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
161 udelay(ts_delay_pressure); 57 udelay(ts_delay_pressure);
162 return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPY); 58 return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);
163} 59}
164 60
165/* 61/*
@@ -168,21 +64,21 @@ static inline unsigned int ucb1400_ts_read_pressure(struct ucb1400 *ucb)
168 * gives a faster response time. Even so, we need to wait about 55us 64 * gives a faster response time. Even so, we need to wait about 55us
169 * for things to stabilise. 65 * for things to stabilise.
170 */ 66 */
171static inline unsigned int ucb1400_ts_read_xpos(struct ucb1400 *ucb) 67static inline unsigned int ucb1400_ts_read_xpos(struct ucb1400_ts *ucb)
172{ 68{
173 ucb1400_reg_write(ucb, UCB_TS_CR, 69 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
174 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW | 70 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
175 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 71 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
176 ucb1400_reg_write(ucb, UCB_TS_CR, 72 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
177 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW | 73 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
178 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 74 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
179 ucb1400_reg_write(ucb, UCB_TS_CR, 75 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
180 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW | 76 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
181 UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA); 77 UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
182 78
183 udelay(ts_delay); 79 udelay(ts_delay);
184 80
185 return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPY); 81 return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPY, adcsync);
186} 82}
187 83
188/* 84/*
@@ -191,63 +87,63 @@ static inline unsigned int ucb1400_ts_read_xpos(struct ucb1400 *ucb)
191 * gives a faster response time. Even so, we need to wait about 55us 87 * gives a faster response time. Even so, we need to wait about 55us
192 * for things to stabilise. 88 * for things to stabilise.
193 */ 89 */
194static inline unsigned int ucb1400_ts_read_ypos(struct ucb1400 *ucb) 90static inline unsigned int ucb1400_ts_read_ypos(struct ucb1400_ts *ucb)
195{ 91{
196 ucb1400_reg_write(ucb, UCB_TS_CR, 92 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
197 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW | 93 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
198 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 94 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
199 ucb1400_reg_write(ucb, UCB_TS_CR, 95 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
200 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW | 96 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
201 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 97 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
202 ucb1400_reg_write(ucb, UCB_TS_CR, 98 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
203 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW | 99 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
204 UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA); 100 UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
205 101
206 udelay(ts_delay); 102 udelay(ts_delay);
207 103
208 return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPX); 104 return ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_TSPX, adcsync);
209} 105}
210 106
211/* 107/*
212 * Switch to X plate resistance mode. Set MX to ground, PX to 108 * Switch to X plate resistance mode. Set MX to ground, PX to
213 * supply. Measure current. 109 * supply. Measure current.
214 */ 110 */
215static inline unsigned int ucb1400_ts_read_xres(struct ucb1400 *ucb) 111static inline unsigned int ucb1400_ts_read_xres(struct ucb1400_ts *ucb)
216{ 112{
217 ucb1400_reg_write(ucb, UCB_TS_CR, 113 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
218 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW | 114 UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
219 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 115 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
220 return ucb1400_adc_read(ucb, 0); 116 return ucb1400_adc_read(ucb->ac97, 0, adcsync);
221} 117}
222 118
223/* 119/*
224 * Switch to Y plate resistance mode. Set MY to ground, PY to 120 * Switch to Y plate resistance mode. Set MY to ground, PY to
225 * supply. Measure current. 121 * supply. Measure current.
226 */ 122 */
227static inline unsigned int ucb1400_ts_read_yres(struct ucb1400 *ucb) 123static inline unsigned int ucb1400_ts_read_yres(struct ucb1400_ts *ucb)
228{ 124{
229 ucb1400_reg_write(ucb, UCB_TS_CR, 125 ucb1400_reg_write(ucb->ac97, UCB_TS_CR,
230 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW | 126 UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
231 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA); 127 UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
232 return ucb1400_adc_read(ucb, 0); 128 return ucb1400_adc_read(ucb->ac97, 0, adcsync);
233} 129}
234 130
235static inline int ucb1400_ts_pen_down(struct ucb1400 *ucb) 131static inline int ucb1400_ts_pen_down(struct snd_ac97 *ac97)
236{ 132{
237 unsigned short val = ucb1400_reg_read(ucb, UCB_TS_CR); 133 unsigned short val = ucb1400_reg_read(ac97, UCB_TS_CR);
238 return (val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW)); 134 return val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW);
239} 135}
240 136
241static inline void ucb1400_ts_irq_enable(struct ucb1400 *ucb) 137static inline void ucb1400_ts_irq_enable(struct snd_ac97 *ac97)
242{ 138{
243 ucb1400_reg_write(ucb, UCB_IE_CLEAR, UCB_IE_TSPX); 139 ucb1400_reg_write(ac97, UCB_IE_CLEAR, UCB_IE_TSPX);
244 ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0); 140 ucb1400_reg_write(ac97, UCB_IE_CLEAR, 0);
245 ucb1400_reg_write(ucb, UCB_IE_FAL, UCB_IE_TSPX); 141 ucb1400_reg_write(ac97, UCB_IE_FAL, UCB_IE_TSPX);
246} 142}
247 143
248static inline void ucb1400_ts_irq_disable(struct ucb1400 *ucb) 144static inline void ucb1400_ts_irq_disable(struct snd_ac97 *ac97)
249{ 145{
250 ucb1400_reg_write(ucb, UCB_IE_FAL, 0); 146 ucb1400_reg_write(ac97, UCB_IE_FAL, 0);
251} 147}
252 148
253static void ucb1400_ts_evt_add(struct input_dev *idev, u16 pressure, u16 x, u16 y) 149static void ucb1400_ts_evt_add(struct input_dev *idev, u16 pressure, u16 x, u16 y)
@@ -264,25 +160,24 @@ static void ucb1400_ts_event_release(struct input_dev *idev)
264 input_sync(idev); 160 input_sync(idev);
265} 161}
266 162
267static void ucb1400_handle_pending_irq(struct ucb1400 *ucb) 163static void ucb1400_handle_pending_irq(struct ucb1400_ts *ucb)
268{ 164{
269 unsigned int isr; 165 unsigned int isr;
270 166
271 isr = ucb1400_reg_read(ucb, UCB_IE_STATUS); 167 isr = ucb1400_reg_read(ucb->ac97, UCB_IE_STATUS);
272 ucb1400_reg_write(ucb, UCB_IE_CLEAR, isr); 168 ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, isr);
273 ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0); 169 ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
274 170
275 if (isr & UCB_IE_TSPX) 171 if (isr & UCB_IE_TSPX) {
276 ucb1400_ts_irq_disable(ucb); 172 ucb1400_ts_irq_disable(ucb->ac97);
277 else 173 enable_irq(ucb->irq);
174 } else
278 printk(KERN_ERR "ucb1400: unexpected IE_STATUS = %#x\n", isr); 175 printk(KERN_ERR "ucb1400: unexpected IE_STATUS = %#x\n", isr);
279
280 enable_irq(ucb->irq);
281} 176}
282 177
283static int ucb1400_ts_thread(void *_ucb) 178static int ucb1400_ts_thread(void *_ucb)
284{ 179{
285 struct ucb1400 *ucb = _ucb; 180 struct ucb1400_ts *ucb = _ucb;
286 struct task_struct *tsk = current; 181 struct task_struct *tsk = current;
287 int valid = 0; 182 int valid = 0;
288 struct sched_param param = { .sched_priority = 1 }; 183 struct sched_param param = { .sched_priority = 1 };
@@ -301,19 +196,19 @@ static int ucb1400_ts_thread(void *_ucb)
301 ucb1400_handle_pending_irq(ucb); 196 ucb1400_handle_pending_irq(ucb);
302 } 197 }
303 198
304 ucb1400_adc_enable(ucb); 199 ucb1400_adc_enable(ucb->ac97);
305 x = ucb1400_ts_read_xpos(ucb); 200 x = ucb1400_ts_read_xpos(ucb);
306 y = ucb1400_ts_read_ypos(ucb); 201 y = ucb1400_ts_read_ypos(ucb);
307 p = ucb1400_ts_read_pressure(ucb); 202 p = ucb1400_ts_read_pressure(ucb);
308 ucb1400_adc_disable(ucb); 203 ucb1400_adc_disable(ucb->ac97);
309 204
310 /* Switch back to interrupt mode. */ 205 /* Switch back to interrupt mode. */
311 ucb1400_ts_mode_int(ucb); 206 ucb1400_ts_mode_int(ucb->ac97);
312 207
313 msleep(10); 208 msleep(10);
314 209
315 if (ucb1400_ts_pen_down(ucb)) { 210 if (ucb1400_ts_pen_down(ucb->ac97)) {
316 ucb1400_ts_irq_enable(ucb); 211 ucb1400_ts_irq_enable(ucb->ac97);
317 212
318 /* 213 /*
319 * If we spat out a valid sample set last time, 214 * If we spat out a valid sample set last time,
@@ -332,8 +227,8 @@ static int ucb1400_ts_thread(void *_ucb)
332 } 227 }
333 228
334 wait_event_freezable_timeout(ucb->ts_wait, 229 wait_event_freezable_timeout(ucb->ts_wait,
335 ucb->irq_pending || ucb->ts_restart || kthread_should_stop(), 230 ucb->irq_pending || ucb->ts_restart ||
336 timeout); 231 kthread_should_stop(), timeout);
337 } 232 }
338 233
339 /* Send the "pen off" if we are stopping with the pen still active */ 234 /* Send the "pen off" if we are stopping with the pen still active */
@@ -356,7 +251,7 @@ static int ucb1400_ts_thread(void *_ucb)
356 */ 251 */
357static irqreturn_t ucb1400_hard_irq(int irqnr, void *devid) 252static irqreturn_t ucb1400_hard_irq(int irqnr, void *devid)
358{ 253{
359 struct ucb1400 *ucb = devid; 254 struct ucb1400_ts *ucb = devid;
360 255
361 if (irqnr == ucb->irq) { 256 if (irqnr == ucb->irq) {
362 disable_irq(ucb->irq); 257 disable_irq(ucb->irq);
@@ -369,7 +264,7 @@ static irqreturn_t ucb1400_hard_irq(int irqnr, void *devid)
369 264
370static int ucb1400_ts_open(struct input_dev *idev) 265static int ucb1400_ts_open(struct input_dev *idev)
371{ 266{
372 struct ucb1400 *ucb = input_get_drvdata(idev); 267 struct ucb1400_ts *ucb = input_get_drvdata(idev);
373 int ret = 0; 268 int ret = 0;
374 269
375 BUG_ON(ucb->ts_task); 270 BUG_ON(ucb->ts_task);
@@ -385,34 +280,14 @@ static int ucb1400_ts_open(struct input_dev *idev)
385 280
386static void ucb1400_ts_close(struct input_dev *idev) 281static void ucb1400_ts_close(struct input_dev *idev)
387{ 282{
388 struct ucb1400 *ucb = input_get_drvdata(idev); 283 struct ucb1400_ts *ucb = input_get_drvdata(idev);
389 284
390 if (ucb->ts_task) 285 if (ucb->ts_task)
391 kthread_stop(ucb->ts_task); 286 kthread_stop(ucb->ts_task);
392 287
393 ucb1400_ts_irq_disable(ucb); 288 ucb1400_ts_irq_disable(ucb->ac97);
394 ucb1400_reg_write(ucb, UCB_TS_CR, 0); 289 ucb1400_reg_write(ucb->ac97, UCB_TS_CR, 0);
395}
396
397#ifdef CONFIG_PM
398static int ucb1400_ts_resume(struct device *dev)
399{
400 struct ucb1400 *ucb = dev_get_drvdata(dev);
401
402 if (ucb->ts_task) {
403 /*
404 * Restart the TS thread to ensure the
405 * TS interrupt mode is set up again
406 * after sleep.
407 */
408 ucb->ts_restart = 1;
409 wake_up(&ucb->ts_wait);
410 }
411 return 0;
412} 290}
413#else
414#define ucb1400_ts_resume NULL
415#endif
416 291
417#ifndef NO_IRQ 292#ifndef NO_IRQ
418#define NO_IRQ 0 293#define NO_IRQ 0
@@ -422,25 +297,26 @@ static int ucb1400_ts_resume(struct device *dev)
422 * Try to probe our interrupt, rather than relying on lots of 297 * Try to probe our interrupt, rather than relying on lots of
423 * hard-coded machine dependencies. 298 * hard-coded machine dependencies.
424 */ 299 */
425static int ucb1400_detect_irq(struct ucb1400 *ucb) 300static int ucb1400_ts_detect_irq(struct ucb1400_ts *ucb)
426{ 301{
427 unsigned long mask, timeout; 302 unsigned long mask, timeout;
428 303
429 mask = probe_irq_on(); 304 mask = probe_irq_on();
430 305
431 /* Enable the ADC interrupt. */ 306 /* Enable the ADC interrupt. */
432 ucb1400_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC); 307 ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, UCB_IE_ADC);
433 ucb1400_reg_write(ucb, UCB_IE_FAL, UCB_IE_ADC); 308 ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_ADC);
434 ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0xffff); 309 ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);
435 ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0); 310 ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
436 311
437 /* Cause an ADC interrupt. */ 312 /* Cause an ADC interrupt. */
438 ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA); 313 ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA);
439 ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START); 314 ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);
440 315
441 /* Wait for the conversion to complete. */ 316 /* Wait for the conversion to complete. */
442 timeout = jiffies + HZ/2; 317 timeout = jiffies + HZ/2;
443 while (!(ucb1400_reg_read(ucb, UCB_ADC_DATA) & UCB_ADC_DAT_VALID)) { 318 while (!(ucb1400_reg_read(ucb->ac97, UCB_ADC_DATA) &
319 UCB_ADC_DAT_VALID)) {
444 cpu_relax(); 320 cpu_relax();
445 if (time_after(jiffies, timeout)) { 321 if (time_after(jiffies, timeout)) {
446 printk(KERN_ERR "ucb1400: timed out in IRQ probe\n"); 322 printk(KERN_ERR "ucb1400: timed out in IRQ probe\n");
@@ -448,13 +324,13 @@ static int ucb1400_detect_irq(struct ucb1400 *ucb)
448 return -ENODEV; 324 return -ENODEV;
449 } 325 }
450 } 326 }
451 ucb1400_reg_write(ucb, UCB_ADC_CR, 0); 327 ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, 0);
452 328
453 /* Disable and clear interrupt. */ 329 /* Disable and clear interrupt. */
454 ucb1400_reg_write(ucb, UCB_IE_RIS, 0); 330 ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, 0);
455 ucb1400_reg_write(ucb, UCB_IE_FAL, 0); 331 ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);
456 ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0xffff); 332 ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);
457 ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0); 333 ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);
458 334
459 /* Read triggered interrupt. */ 335 /* Read triggered interrupt. */
460 ucb->irq = probe_irq_off(mask); 336 ucb->irq = probe_irq_off(mask);
@@ -464,36 +340,25 @@ static int ucb1400_detect_irq(struct ucb1400 *ucb)
464 return 0; 340 return 0;
465} 341}
466 342
467static int ucb1400_ts_probe(struct device *dev) 343static int ucb1400_ts_probe(struct platform_device *dev)
468{ 344{
469 struct ucb1400 *ucb; 345 int error, x_res, y_res;
470 struct input_dev *idev; 346 struct ucb1400_ts *ucb = dev->dev.platform_data;
471 int error, id, x_res, y_res;
472 347
473 ucb = kzalloc(sizeof(struct ucb1400), GFP_KERNEL); 348 ucb->ts_idev = input_allocate_device();
474 idev = input_allocate_device(); 349 if (!ucb->ts_idev) {
475 if (!ucb || !idev) {
476 error = -ENOMEM; 350 error = -ENOMEM;
477 goto err_free_devs; 351 goto err;
478 } 352 }
479 353
480 ucb->ts_idev = idev; 354 error = ucb1400_ts_detect_irq(ucb);
481 ucb->adcsync = adcsync;
482 ucb->ac97 = to_ac97_t(dev);
483 init_waitqueue_head(&ucb->ts_wait);
484
485 id = ucb1400_reg_read(ucb, UCB_ID);
486 if (id != UCB_ID_1400) {
487 error = -ENODEV;
488 goto err_free_devs;
489 }
490
491 error = ucb1400_detect_irq(ucb);
492 if (error) { 355 if (error) {
493 printk(KERN_ERR "UCB1400: IRQ probe failed\n"); 356 printk(KERN_ERR "UCB1400: IRQ probe failed\n");
494 goto err_free_devs; 357 goto err_free_devs;
495 } 358 }
496 359
360 init_waitqueue_head(&ucb->ts_wait);
361
497 error = request_irq(ucb->irq, ucb1400_hard_irq, IRQF_TRIGGER_RISING, 362 error = request_irq(ucb->irq, ucb1400_hard_irq, IRQF_TRIGGER_RISING,
498 "UCB1400", ucb); 363 "UCB1400", ucb);
499 if (error) { 364 if (error) {
@@ -503,80 +368,101 @@ static int ucb1400_ts_probe(struct device *dev)
503 } 368 }
504 printk(KERN_DEBUG "UCB1400: found IRQ %d\n", ucb->irq); 369 printk(KERN_DEBUG "UCB1400: found IRQ %d\n", ucb->irq);
505 370
506 input_set_drvdata(idev, ucb); 371 input_set_drvdata(ucb->ts_idev, ucb);
507 372
508 idev->dev.parent = dev; 373 ucb->ts_idev->dev.parent = &dev->dev;
509 idev->name = "UCB1400 touchscreen interface"; 374 ucb->ts_idev->name = "UCB1400 touchscreen interface";
510 idev->id.vendor = ucb1400_reg_read(ucb, AC97_VENDOR_ID1); 375 ucb->ts_idev->id.vendor = ucb1400_reg_read(ucb->ac97,
511 idev->id.product = id; 376 AC97_VENDOR_ID1);
512 idev->open = ucb1400_ts_open; 377 ucb->ts_idev->id.product = ucb->id;
513 idev->close = ucb1400_ts_close; 378 ucb->ts_idev->open = ucb1400_ts_open;
514 idev->evbit[0] = BIT_MASK(EV_ABS); 379 ucb->ts_idev->close = ucb1400_ts_close;
380 ucb->ts_idev->evbit[0] = BIT_MASK(EV_ABS);
515 381
516 ucb1400_adc_enable(ucb); 382 ucb1400_adc_enable(ucb->ac97);
517 x_res = ucb1400_ts_read_xres(ucb); 383 x_res = ucb1400_ts_read_xres(ucb);
518 y_res = ucb1400_ts_read_yres(ucb); 384 y_res = ucb1400_ts_read_yres(ucb);
519 ucb1400_adc_disable(ucb); 385 ucb1400_adc_disable(ucb->ac97);
520 printk(KERN_DEBUG "UCB1400: x/y = %d/%d\n", x_res, y_res); 386 printk(KERN_DEBUG "UCB1400: x/y = %d/%d\n", x_res, y_res);
521 387
522 input_set_abs_params(idev, ABS_X, 0, x_res, 0, 0); 388 input_set_abs_params(ucb->ts_idev, ABS_X, 0, x_res, 0, 0);
523 input_set_abs_params(idev, ABS_Y, 0, y_res, 0, 0); 389 input_set_abs_params(ucb->ts_idev, ABS_Y, 0, y_res, 0, 0);
524 input_set_abs_params(idev, ABS_PRESSURE, 0, 0, 0, 0); 390 input_set_abs_params(ucb->ts_idev, ABS_PRESSURE, 0, 0, 0, 0);
525 391
526 error = input_register_device(idev); 392 error = input_register_device(ucb->ts_idev);
527 if (error) 393 if (error)
528 goto err_free_irq; 394 goto err_free_irq;
529 395
530 dev_set_drvdata(dev, ucb);
531 return 0; 396 return 0;
532 397
533 err_free_irq: 398err_free_irq:
534 free_irq(ucb->irq, ucb); 399 free_irq(ucb->irq, ucb);
535 err_free_devs: 400err_free_devs:
536 input_free_device(idev); 401 input_free_device(ucb->ts_idev);
537 kfree(ucb); 402err:
538 return error; 403 return error;
404
539} 405}
540 406
541static int ucb1400_ts_remove(struct device *dev) 407static int ucb1400_ts_remove(struct platform_device *dev)
542{ 408{
543 struct ucb1400 *ucb = dev_get_drvdata(dev); 409 struct ucb1400_ts *ucb = dev->dev.platform_data;
544 410
545 free_irq(ucb->irq, ucb); 411 free_irq(ucb->irq, ucb);
546 input_unregister_device(ucb->ts_idev); 412 input_unregister_device(ucb->ts_idev);
547 dev_set_drvdata(dev, NULL);
548 kfree(ucb);
549 return 0; 413 return 0;
550} 414}
551 415
552static struct device_driver ucb1400_ts_driver = { 416#ifdef CONFIG_PM
553 .name = "ucb1400_ts", 417static int ucb1400_ts_resume(struct platform_device *dev)
554 .owner = THIS_MODULE, 418{
555 .bus = &ac97_bus_type, 419 struct ucb1400_ts *ucb = platform_get_drvdata(dev);
556 .probe = ucb1400_ts_probe, 420
557 .remove = ucb1400_ts_remove, 421 if (ucb->ts_task) {
558 .resume = ucb1400_ts_resume, 422 /*
423 * Restart the TS thread to ensure the
424 * TS interrupt mode is set up again
425 * after sleep.
426 */
427 ucb->ts_restart = 1;
428 wake_up(&ucb->ts_wait);
429 }
430 return 0;
431}
432#else
433#define ucb1400_ts_resume NULL
434#endif
435
436static struct platform_driver ucb1400_ts_driver = {
437 .probe = ucb1400_ts_probe,
438 .remove = ucb1400_ts_remove,
439 .resume = ucb1400_ts_resume,
440 .driver = {
441 .name = "ucb1400_ts",
442 },
559}; 443};
560 444
561static int __init ucb1400_ts_init(void) 445static int __init ucb1400_ts_init(void)
562{ 446{
563 return driver_register(&ucb1400_ts_driver); 447 return platform_driver_register(&ucb1400_ts_driver);
564} 448}
565 449
566static void __exit ucb1400_ts_exit(void) 450static void __exit ucb1400_ts_exit(void)
567{ 451{
568 driver_unregister(&ucb1400_ts_driver); 452 platform_driver_unregister(&ucb1400_ts_driver);
569} 453}
570 454
571module_param(adcsync, bool, 0444); 455module_param(adcsync, bool, 0444);
572MODULE_PARM_DESC(adcsync, "Synchronize touch readings with ADCSYNC pin."); 456MODULE_PARM_DESC(adcsync, "Synchronize touch readings with ADCSYNC pin.");
573 457
574module_param(ts_delay, int, 0444); 458module_param(ts_delay, int, 0444);
575MODULE_PARM_DESC(ts_delay, "Delay between panel setup and position read. Default = 55us."); 459MODULE_PARM_DESC(ts_delay, "Delay between panel setup and"
460 " position read. Default = 55us.");
576 461
577module_param(ts_delay_pressure, int, 0444); 462module_param(ts_delay_pressure, int, 0444);
578MODULE_PARM_DESC(ts_delay_pressure, 463MODULE_PARM_DESC(ts_delay_pressure,
579 "delay between panel setup and pressure read. Default = 0us."); 464 "delay between panel setup and pressure read."
465 " Default = 0us.");
580 466
581module_init(ucb1400_ts_init); 467module_init(ucb1400_ts_init);
582module_exit(ucb1400_ts_exit); 468module_exit(ucb1400_ts_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 09:27:48 -0500