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authorArnd Bergmann <arnd@arndb.de>2014-03-28 03:52:36 -0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-03-28 04:10:11 -0400
commite545ef39e06e7b1df2ef9ddbbf665b74c4e1878a (patch)
tree44a245210306f0cd664bc2c3c1a03e479163d864
parent9732e5b0bf87a1b0457be1c5d38262babc4cd2ae (diff)
Input: remove obsolete tnetv107x drivers
The tnetv107x platform is getting removed, so the touchscreen and keypad drivers for this platform will no longer be needed either. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Kevin Hilman <khilman@linaro.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: linux-input@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat
-rw-r--r--drivers/input/keyboard/Kconfig10
-rw-r--r--drivers/input/keyboard/Makefile1
-rw-r--r--drivers/input/keyboard/tnetv107x-keypad.c329
-rw-r--r--drivers/input/touchscreen/Kconfig9
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/tnetv107x-ts.c384
6 files changed, 0 insertions, 734 deletions
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index a673c9f3a0b9..935dcaf16646 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -595,16 +595,6 @@ config KEYBOARD_TC3589X
595 To compile this driver as a module, choose M here: the 595 To compile this driver as a module, choose M here: the
596 module will be called tc3589x-keypad. 596 module will be called tc3589x-keypad.
597 597
598config KEYBOARD_TNETV107X
599 tristate "TI TNETV107X keypad support"
600 depends on ARCH_DAVINCI_TNETV107X
601 select INPUT_MATRIXKMAP
602 help
603 Say Y here if you want to use the TNETV107X keypad.
604
605 To compile this driver as a module, choose M here: the
606 module will be called tnetv107x-keypad.
607
608config KEYBOARD_TWL4030 598config KEYBOARD_TWL4030
609 tristate "TI TWL4030/TWL5030/TPS659x0 keypad support" 599 tristate "TI TWL4030/TWL5030/TPS659x0 keypad support"
610 depends on TWL4030_CORE 600 depends on TWL4030_CORE
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index a699b6172303..81014d94a0c1 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -53,7 +53,6 @@ obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
53obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o 53obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
54obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o 54obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o
55obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o 55obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o
56obj-$(CONFIG_KEYBOARD_TNETV107X) += tnetv107x-keypad.o
57obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o 56obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o
58obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o 57obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o
59obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o 58obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o
diff --git a/drivers/input/keyboard/tnetv107x-keypad.c b/drivers/input/keyboard/tnetv107x-keypad.c
deleted file mode 100644
index 086511c2121b..000000000000
--- a/drivers/input/keyboard/tnetv107x-keypad.c
+++ /dev/null
@@ -1,329 +0,0 @@
1/*
2 * Texas Instruments TNETV107X Keypad Driver
3 *
4 * Copyright (C) 2010 Texas Instruments
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16#include <linux/kernel.h>
17#include <linux/err.h>
18#include <linux/errno.h>
19#include <linux/input.h>
20#include <linux/platform_device.h>
21#include <linux/interrupt.h>
22#include <linux/slab.h>
23#include <linux/delay.h>
24#include <linux/io.h>
25#include <linux/clk.h>
26#include <linux/input/matrix_keypad.h>
27#include <linux/module.h>
28
29#define BITS(x) (BIT(x) - 1)
30
31#define KEYPAD_ROWS 9
32#define KEYPAD_COLS 9
33
34#define DEBOUNCE_MIN 0x400ul
35#define DEBOUNCE_MAX 0x3ffffffful
36
37struct keypad_regs {
38 u32 rev;
39 u32 mode;
40 u32 mask;
41 u32 pol;
42 u32 dclock;
43 u32 rclock;
44 u32 stable_cnt;
45 u32 in_en;
46 u32 out;
47 u32 out_en;
48 u32 in;
49 u32 lock;
50 u32 pres[3];
51};
52
53#define keypad_read(kp, reg) __raw_readl(&(kp)->regs->reg)
54#define keypad_write(kp, reg, val) __raw_writel(val, &(kp)->regs->reg)
55
56struct keypad_data {
57 struct input_dev *input_dev;
58 struct resource *res;
59 struct keypad_regs __iomem *regs;
60 struct clk *clk;
61 struct device *dev;
62 spinlock_t lock;
63 int irq_press;
64 int irq_release;
65 int rows, cols, row_shift;
66 int debounce_ms, active_low;
67 u32 prev_keys[3];
68 unsigned short keycodes[];
69};
70
71static irqreturn_t keypad_irq(int irq, void *data)
72{
73 struct keypad_data *kp = data;
74 int i, bit, val, row, col, code;
75 unsigned long flags;
76 u32 curr_keys[3];
77 u32 change;
78
79 spin_lock_irqsave(&kp->lock, flags);
80
81 memset(curr_keys, 0, sizeof(curr_keys));
82 if (irq == kp->irq_press)
83 for (i = 0; i < 3; i++)
84 curr_keys[i] = keypad_read(kp, pres[i]);
85
86 for (i = 0; i < 3; i++) {
87 change = curr_keys[i] ^ kp->prev_keys[i];
88
89 while (change) {
90 bit = fls(change) - 1;
91 change ^= BIT(bit);
92 val = curr_keys[i] & BIT(bit);
93 bit += i * 32;
94 row = bit / KEYPAD_COLS;
95 col = bit % KEYPAD_COLS;
96
97 code = MATRIX_SCAN_CODE(row, col, kp->row_shift);
98 input_event(kp->input_dev, EV_MSC, MSC_SCAN, code);
99 input_report_key(kp->input_dev, kp->keycodes[code],
100 val);
101 }
102 }
103 input_sync(kp->input_dev);
104 memcpy(kp->prev_keys, curr_keys, sizeof(curr_keys));
105
106 if (irq == kp->irq_press)
107 keypad_write(kp, lock, 0); /* Allow hardware updates */
108
109 spin_unlock_irqrestore(&kp->lock, flags);
110
111 return IRQ_HANDLED;
112}
113
114static int keypad_start(struct input_dev *dev)
115{
116 struct keypad_data *kp = input_get_drvdata(dev);
117 unsigned long mask, debounce, clk_rate_khz;
118 unsigned long flags;
119
120 clk_enable(kp->clk);
121 clk_rate_khz = clk_get_rate(kp->clk) / 1000;
122
123 spin_lock_irqsave(&kp->lock, flags);
124
125 /* Initialize device registers */
126 keypad_write(kp, mode, 0);
127
128 mask = BITS(kp->rows) << KEYPAD_COLS;
129 mask |= BITS(kp->cols);
130 keypad_write(kp, mask, ~mask);
131
132 keypad_write(kp, pol, kp->active_low ? 0 : 0x3ffff);
133 keypad_write(kp, stable_cnt, 3);
134
135 debounce = kp->debounce_ms * clk_rate_khz;
136 debounce = clamp(debounce, DEBOUNCE_MIN, DEBOUNCE_MAX);
137 keypad_write(kp, dclock, debounce);
138 keypad_write(kp, rclock, 4 * debounce);
139
140 keypad_write(kp, in_en, 1);
141
142 spin_unlock_irqrestore(&kp->lock, flags);
143
144 return 0;
145}
146
147static void keypad_stop(struct input_dev *dev)
148{
149 struct keypad_data *kp = input_get_drvdata(dev);
150
151 synchronize_irq(kp->irq_press);
152 synchronize_irq(kp->irq_release);
153 clk_disable(kp->clk);
154}
155
156static int keypad_probe(struct platform_device *pdev)
157{
158 const struct matrix_keypad_platform_data *pdata;
159 const struct matrix_keymap_data *keymap_data;
160 struct device *dev = &pdev->dev;
161 struct keypad_data *kp;
162 int error = 0, sz, row_shift;
163 u32 rev = 0;
164
165 pdata = dev_get_platdata(&pdev->dev);
166 if (!pdata) {
167 dev_err(dev, "cannot find device data\n");
168 return -EINVAL;
169 }
170
171 keymap_data = pdata->keymap_data;
172 if (!keymap_data) {
173 dev_err(dev, "cannot find keymap data\n");
174 return -EINVAL;
175 }
176
177 row_shift = get_count_order(pdata->num_col_gpios);
178 sz = offsetof(struct keypad_data, keycodes);
179 sz += (pdata->num_row_gpios << row_shift) * sizeof(kp->keycodes[0]);
180 kp = kzalloc(sz, GFP_KERNEL);
181 if (!kp) {
182 dev_err(dev, "cannot allocate device info\n");
183 return -ENOMEM;
184 }
185
186 kp->dev = dev;
187 kp->rows = pdata->num_row_gpios;
188 kp->cols = pdata->num_col_gpios;
189 kp->row_shift = row_shift;
190 platform_set_drvdata(pdev, kp);
191 spin_lock_init(&kp->lock);
192
193 kp->irq_press = platform_get_irq_byname(pdev, "press");
194 kp->irq_release = platform_get_irq_byname(pdev, "release");
195 if (kp->irq_press < 0 || kp->irq_release < 0) {
196 dev_err(dev, "cannot determine device interrupts\n");
197 error = -ENODEV;
198 goto error_res;
199 }
200
201 kp->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
202 if (!kp->res) {
203 dev_err(dev, "cannot determine register area\n");
204 error = -ENODEV;
205 goto error_res;
206 }
207
208 if (!request_mem_region(kp->res->start, resource_size(kp->res),
209 pdev->name)) {
210 dev_err(dev, "cannot claim register memory\n");
211 kp->res = NULL;
212 error = -EINVAL;
213 goto error_res;
214 }
215
216 kp->regs = ioremap(kp->res->start, resource_size(kp->res));
217 if (!kp->regs) {
218 dev_err(dev, "cannot map register memory\n");
219 error = -ENOMEM;
220 goto error_map;
221 }
222
223 kp->clk = clk_get(dev, NULL);
224 if (IS_ERR(kp->clk)) {
225 dev_err(dev, "cannot claim device clock\n");
226 error = PTR_ERR(kp->clk);
227 goto error_clk;
228 }
229
230 error = request_threaded_irq(kp->irq_press, NULL, keypad_irq,
231 IRQF_ONESHOT, dev_name(dev), kp);
232 if (error < 0) {
233 dev_err(kp->dev, "Could not allocate keypad press key irq\n");
234 goto error_irq_press;
235 }
236
237 error = request_threaded_irq(kp->irq_release, NULL, keypad_irq,
238 IRQF_ONESHOT, dev_name(dev), kp);
239 if (error < 0) {
240 dev_err(kp->dev, "Could not allocate keypad release key irq\n");
241 goto error_irq_release;
242 }
243
244 kp->input_dev = input_allocate_device();
245 if (!kp->input_dev) {
246 dev_err(dev, "cannot allocate input device\n");
247 error = -ENOMEM;
248 goto error_input;
249 }
250
251 kp->input_dev->name = pdev->name;
252 kp->input_dev->dev.parent = &pdev->dev;
253 kp->input_dev->open = keypad_start;
254 kp->input_dev->close = keypad_stop;
255
256 clk_enable(kp->clk);
257 rev = keypad_read(kp, rev);
258 kp->input_dev->id.bustype = BUS_HOST;
259 kp->input_dev->id.product = ((rev >> 8) & 0x07);
260 kp->input_dev->id.version = ((rev >> 16) & 0xfff);
261 clk_disable(kp->clk);
262
263 error = matrix_keypad_build_keymap(keymap_data, NULL,
264 kp->rows, kp->cols,
265 kp->keycodes, kp->input_dev);
266 if (error) {
267 dev_err(dev, "Failed to build keymap\n");
268 goto error_reg;
269 }
270
271 if (!pdata->no_autorepeat)
272 kp->input_dev->evbit[0] |= BIT_MASK(EV_REP);
273 input_set_capability(kp->input_dev, EV_MSC, MSC_SCAN);
274
275 input_set_drvdata(kp->input_dev, kp);
276
277 error = input_register_device(kp->input_dev);
278 if (error < 0) {
279 dev_err(dev, "Could not register input device\n");
280 goto error_reg;
281 }
282
283 return 0;
284
285
286error_reg:
287 input_free_device(kp->input_dev);
288error_input:
289 free_irq(kp->irq_release, kp);
290error_irq_release:
291 free_irq(kp->irq_press, kp);
292error_irq_press:
293 clk_put(kp->clk);
294error_clk:
295 iounmap(kp->regs);
296error_map:
297 release_mem_region(kp->res->start, resource_size(kp->res));
298error_res:
299 kfree(kp);
300 return error;
301}
302
303static int keypad_remove(struct platform_device *pdev)
304{
305 struct keypad_data *kp = platform_get_drvdata(pdev);
306
307 free_irq(kp->irq_press, kp);
308 free_irq(kp->irq_release, kp);
309 input_unregister_device(kp->input_dev);
310 clk_put(kp->clk);
311 iounmap(kp->regs);
312 release_mem_region(kp->res->start, resource_size(kp->res));
313 kfree(kp);
314
315 return 0;
316}
317
318static struct platform_driver keypad_driver = {
319 .probe = keypad_probe,
320 .remove = keypad_remove,
321 .driver.name = "tnetv107x-keypad",
322 .driver.owner = THIS_MODULE,
323};
324module_platform_driver(keypad_driver);
325
326MODULE_AUTHOR("Cyril Chemparathy");
327MODULE_DESCRIPTION("TNETV107X Keypad Driver");
328MODULE_ALIAS("platform:tnetv107x-keypad");
329MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 07e9e82029d1..68edc9db2c64 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -514,15 +514,6 @@ config TOUCHSCREEN_MIGOR
514 To compile this driver as a module, choose M here: the 514 To compile this driver as a module, choose M here: the
515 module will be called migor_ts. 515 module will be called migor_ts.
516 516
517config TOUCHSCREEN_TNETV107X
518 tristate "TI TNETV107X touchscreen support"
519 depends on ARCH_DAVINCI_TNETV107X
520 help
521 Say Y here if you want to use the TNETV107X touchscreen.
522
523 To compile this driver as a module, choose M here: the
524 module will be called tnetv107x-ts.
525
526config TOUCHSCREEN_TOUCHRIGHT 517config TOUCHSCREEN_TOUCHRIGHT
527 tristate "Touchright serial touchscreen" 518 tristate "Touchright serial touchscreen"
528 select SERIO 519 select SERIO
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 62801f213346..4bc954b7c7c3 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -56,7 +56,6 @@ obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
56obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o 56obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
57obj-$(CONFIG_TOUCHSCREEN_SUR40) += sur40.o 57obj-$(CONFIG_TOUCHSCREEN_SUR40) += sur40.o
58obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.o 58obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.o
59obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
60obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o 59obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
61obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o 60obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
62obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o 61obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
diff --git a/drivers/input/touchscreen/tnetv107x-ts.c b/drivers/input/touchscreen/tnetv107x-ts.c
deleted file mode 100644
index c47827a26e3c..000000000000
--- a/drivers/input/touchscreen/tnetv107x-ts.c
+++ /dev/null
@@ -1,384 +0,0 @@
1/*
2 * Texas Instruments TNETV107X Touchscreen Driver
3 *
4 * Copyright (C) 2010 Texas Instruments
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/err.h>
19#include <linux/errno.h>
20#include <linux/input.h>
21#include <linux/platform_device.h>
22#include <linux/interrupt.h>
23#include <linux/slab.h>
24#include <linux/delay.h>
25#include <linux/ctype.h>
26#include <linux/io.h>
27#include <linux/clk.h>
28
29#include <mach/tnetv107x.h>
30
31#define TSC_PENUP_POLL (HZ / 5)
32#define IDLE_TIMEOUT 100 /* msec */
33
34/*
35 * The first and last samples of a touch interval are usually garbage and need
36 * to be filtered out with these devices. The following definitions control
37 * the number of samples skipped.
38 */
39#define TSC_HEAD_SKIP 1
40#define TSC_TAIL_SKIP 1
41#define TSC_SKIP (TSC_HEAD_SKIP + TSC_TAIL_SKIP + 1)
42#define TSC_SAMPLES (TSC_SKIP + 1)
43
44/* Register Offsets */
45struct tsc_regs {
46 u32 rev;
47 u32 tscm;
48 u32 bwcm;
49 u32 swc;
50 u32 adcchnl;
51 u32 adcdata;
52 u32 chval[4];
53};
54
55/* TSC Mode Configuration Register (tscm) bits */
56#define WMODE BIT(0)
57#define TSKIND BIT(1)
58#define ZMEASURE_EN BIT(2)
59#define IDLE BIT(3)
60#define TSC_EN BIT(4)
61#define STOP BIT(5)
62#define ONE_SHOT BIT(6)
63#define SINGLE BIT(7)
64#define AVG BIT(8)
65#define AVGNUM(x) (((x) & 0x03) << 9)
66#define PVSTC(x) (((x) & 0x07) << 11)
67#define PON BIT(14)
68#define PONBG BIT(15)
69#define AFERST BIT(16)
70
71/* ADC DATA Capture Register bits */
72#define DATA_VALID BIT(16)
73
74/* Register Access Macros */
75#define tsc_read(ts, reg) __raw_readl(&(ts)->regs->reg)
76#define tsc_write(ts, reg, val) __raw_writel(val, &(ts)->regs->reg);
77#define tsc_set_bits(ts, reg, val) \
78 tsc_write(ts, reg, tsc_read(ts, reg) | (val))
79#define tsc_clr_bits(ts, reg, val) \
80 tsc_write(ts, reg, tsc_read(ts, reg) & ~(val))
81
82struct sample {
83 int x, y, p;
84};
85
86struct tsc_data {
87 struct input_dev *input_dev;
88 struct resource *res;
89 struct tsc_regs __iomem *regs;
90 struct timer_list timer;
91 spinlock_t lock;
92 struct clk *clk;
93 struct device *dev;
94 int sample_count;
95 struct sample samples[TSC_SAMPLES];
96 int tsc_irq;
97};
98
99static int tsc_read_sample(struct tsc_data *ts, struct sample* sample)
100{
101 int x, y, z1, z2, t, p = 0;
102 u32 val;
103
104 val = tsc_read(ts, chval[0]);
105 if (val & DATA_VALID)
106 x = val & 0xffff;
107 else
108 return -EINVAL;
109
110 y = tsc_read(ts, chval[1]) & 0xffff;
111 z1 = tsc_read(ts, chval[2]) & 0xffff;
112 z2 = tsc_read(ts, chval[3]) & 0xffff;
113
114 if (z1) {
115 t = ((600 * x) * (z2 - z1));
116 p = t / (u32) (z1 << 12);
117 if (p < 0)
118 p = 0;
119 }
120
121 sample->x = x;
122 sample->y = y;
123 sample->p = p;
124
125 return 0;
126}
127
128static void tsc_poll(unsigned long data)
129{
130 struct tsc_data *ts = (struct tsc_data *)data;
131 unsigned long flags;
132 int i, val, x, y, p;
133
134 spin_lock_irqsave(&ts->lock, flags);
135
136 if (ts->sample_count >= TSC_SKIP) {
137 input_report_abs(ts->input_dev, ABS_PRESSURE, 0);
138 input_report_key(ts->input_dev, BTN_TOUCH, 0);
139 input_sync(ts->input_dev);
140 } else if (ts->sample_count > 0) {
141 /*
142 * A touch event lasted less than our skip count. Salvage and
143 * report anyway.
144 */
145 for (i = 0, val = 0; i < ts->sample_count; i++)
146 val += ts->samples[i].x;
147 x = val / ts->sample_count;
148
149 for (i = 0, val = 0; i < ts->sample_count; i++)
150 val += ts->samples[i].y;
151 y = val / ts->sample_count;
152
153 for (i = 0, val = 0; i < ts->sample_count; i++)
154 val += ts->samples[i].p;
155 p = val / ts->sample_count;
156
157 input_report_abs(ts->input_dev, ABS_X, x);
158 input_report_abs(ts->input_dev, ABS_Y, y);
159 input_report_abs(ts->input_dev, ABS_PRESSURE, p);
160 input_report_key(ts->input_dev, BTN_TOUCH, 1);
161 input_sync(ts->input_dev);
162 }
163
164 ts->sample_count = 0;
165
166 spin_unlock_irqrestore(&ts->lock, flags);
167}
168
169static irqreturn_t tsc_irq(int irq, void *dev_id)
170{
171 struct tsc_data *ts = (struct tsc_data *)dev_id;
172 struct sample *sample;
173 int index;
174
175 spin_lock(&ts->lock);
176
177 index = ts->sample_count % TSC_SAMPLES;
178 sample = &ts->samples[index];
179 if (tsc_read_sample(ts, sample) < 0)
180 goto out;
181
182 if (++ts->sample_count >= TSC_SKIP) {
183 index = (ts->sample_count - TSC_TAIL_SKIP - 1) % TSC_SAMPLES;
184 sample = &ts->samples[index];
185
186 input_report_abs(ts->input_dev, ABS_X, sample->x);
187 input_report_abs(ts->input_dev, ABS_Y, sample->y);
188 input_report_abs(ts->input_dev, ABS_PRESSURE, sample->p);
189 if (ts->sample_count == TSC_SKIP)
190 input_report_key(ts->input_dev, BTN_TOUCH, 1);
191 input_sync(ts->input_dev);
192 }
193 mod_timer(&ts->timer, jiffies + TSC_PENUP_POLL);
194out:
195 spin_unlock(&ts->lock);
196 return IRQ_HANDLED;
197}
198
199static int tsc_start(struct input_dev *dev)
200{
201 struct tsc_data *ts = input_get_drvdata(dev);
202 unsigned long timeout = jiffies + msecs_to_jiffies(IDLE_TIMEOUT);
203 u32 val;
204
205 clk_enable(ts->clk);
206
207 /* Go to idle mode, before any initialization */
208 while (time_after(timeout, jiffies)) {
209 if (tsc_read(ts, tscm) & IDLE)
210 break;
211 }
212
213 if (time_before(timeout, jiffies)) {
214 dev_warn(ts->dev, "timeout waiting for idle\n");
215 clk_disable(ts->clk);
216 return -EIO;
217 }
218
219 /* Configure TSC Control register*/
220 val = (PONBG | PON | PVSTC(4) | ONE_SHOT | ZMEASURE_EN);
221 tsc_write(ts, tscm, val);
222
223 /* Bring TSC out of reset: Clear AFE reset bit */
224 val &= ~(AFERST);
225 tsc_write(ts, tscm, val);
226
227 /* Configure all pins for hardware control*/
228 tsc_write(ts, bwcm, 0);
229
230 /* Finally enable the TSC */
231 tsc_set_bits(ts, tscm, TSC_EN);
232
233 return 0;
234}
235
236static void tsc_stop(struct input_dev *dev)
237{
238 struct tsc_data *ts = input_get_drvdata(dev);
239
240 tsc_clr_bits(ts, tscm, TSC_EN);
241 synchronize_irq(ts->tsc_irq);
242 del_timer_sync(&ts->timer);
243 clk_disable(ts->clk);
244}
245
246static int tsc_probe(struct platform_device *pdev)
247{
248 struct device *dev = &pdev->dev;
249 struct tsc_data *ts;
250 int error = 0;
251 u32 rev = 0;
252
253 ts = kzalloc(sizeof(struct tsc_data), GFP_KERNEL);
254 if (!ts) {
255 dev_err(dev, "cannot allocate device info\n");
256 return -ENOMEM;
257 }
258
259 ts->dev = dev;
260 spin_lock_init(&ts->lock);
261 setup_timer(&ts->timer, tsc_poll, (unsigned long)ts);
262 platform_set_drvdata(pdev, ts);
263
264 ts->tsc_irq = platform_get_irq(pdev, 0);
265 if (ts->tsc_irq < 0) {
266 dev_err(dev, "cannot determine device interrupt\n");
267 error = -ENODEV;
268 goto error_res;
269 }
270
271 ts->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
272 if (!ts->res) {
273 dev_err(dev, "cannot determine register area\n");
274 error = -ENODEV;
275 goto error_res;
276 }
277
278 if (!request_mem_region(ts->res->start, resource_size(ts->res),
279 pdev->name)) {
280 dev_err(dev, "cannot claim register memory\n");
281 ts->res = NULL;
282 error = -EINVAL;
283 goto error_res;
284 }
285
286 ts->regs = ioremap(ts->res->start, resource_size(ts->res));
287 if (!ts->regs) {
288 dev_err(dev, "cannot map register memory\n");
289 error = -ENOMEM;
290 goto error_map;
291 }
292
293 ts->clk = clk_get(dev, NULL);
294 if (IS_ERR(ts->clk)) {
295 dev_err(dev, "cannot claim device clock\n");
296 error = PTR_ERR(ts->clk);
297 goto error_clk;
298 }
299
300 error = request_threaded_irq(ts->tsc_irq, NULL, tsc_irq, IRQF_ONESHOT,
301 dev_name(dev), ts);
302 if (error < 0) {
303 dev_err(ts->dev, "Could not allocate ts irq\n");
304 goto error_irq;
305 }
306
307 ts->input_dev = input_allocate_device();
308 if (!ts->input_dev) {
309 dev_err(dev, "cannot allocate input device\n");
310 error = -ENOMEM;
311 goto error_input;
312 }
313 input_set_drvdata(ts->input_dev, ts);
314
315 ts->input_dev->name = pdev->name;
316 ts->input_dev->id.bustype = BUS_HOST;
317 ts->input_dev->dev.parent = &pdev->dev;
318 ts->input_dev->open = tsc_start;
319 ts->input_dev->close = tsc_stop;
320
321 clk_enable(ts->clk);
322 rev = tsc_read(ts, rev);
323 ts->input_dev->id.product = ((rev >> 8) & 0x07);
324 ts->input_dev->id.version = ((rev >> 16) & 0xfff);
325 clk_disable(ts->clk);
326
327 __set_bit(EV_KEY, ts->input_dev->evbit);
328 __set_bit(EV_ABS, ts->input_dev->evbit);
329 __set_bit(BTN_TOUCH, ts->input_dev->keybit);
330
331 input_set_abs_params(ts->input_dev, ABS_X, 0, 0xffff, 5, 0);
332 input_set_abs_params(ts->input_dev, ABS_Y, 0, 0xffff, 5, 0);
333 input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 4095, 128, 0);
334
335 error = input_register_device(ts->input_dev);
336 if (error < 0) {
337 dev_err(dev, "failed input device registration\n");
338 goto error_reg;
339 }
340
341 return 0;
342
343error_reg:
344 input_free_device(ts->input_dev);
345error_input:
346 free_irq(ts->tsc_irq, ts);
347error_irq:
348 clk_put(ts->clk);
349error_clk:
350 iounmap(ts->regs);
351error_map:
352 release_mem_region(ts->res->start, resource_size(ts->res));
353error_res:
354 kfree(ts);
355
356 return error;
357}
358
359static int tsc_remove(struct platform_device *pdev)
360{
361 struct tsc_data *ts = platform_get_drvdata(pdev);
362
363 input_unregister_device(ts->input_dev);
364 free_irq(ts->tsc_irq, ts);
365 clk_put(ts->clk);
366 iounmap(ts->regs);
367 release_mem_region(ts->res->start, resource_size(ts->res));
368 kfree(ts);
369
370 return 0;
371}
372
373static struct platform_driver tsc_driver = {
374 .probe = tsc_probe,
375 .remove = tsc_remove,
376 .driver.name = "tnetv107x-ts",
377 .driver.owner = THIS_MODULE,
378};
379module_platform_driver(tsc_driver);
380
381MODULE_AUTHOR("Cyril Chemparathy");
382MODULE_DESCRIPTION("TNETV107X Touchscreen Driver");
383MODULE_ALIAS("platform:tnetv107x-ts");
384MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-11 07:23:56 -0400