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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-02 19:15:12 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-02 19:15:12 -0400
commit825f4e0271b0de3f7f31d963dcdaa0056fe9b73a (patch)
treeaef1f198da011a96fefbe9851137ca17afd929a4 /drivers/input/touchscreen
parent0a58471541cc823ef8056d23945c39fec154481c (diff)
parentb5b9324a6296bd0176fe1f8e06a1220207bd1bd3 (diff)
Merge tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next
Pull part one of ARM SoC updates from Olof Johansson: "A quite large set of SoC updates this cycle. In no particular order: - Multi-cluster power management for Samsung Exynos, adding support for big.LITTLE CPU switching on EXYNOS5 - SMP support for Marvell Armada 375 and 38x - SMP rework on Allwinner A31 - Xilinx Zynq support for SOC_BUS, big endian - Marvell orion5x platform cleanup, modernizing the implementation and moving to DT. - _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so that their platform can be enabled in the same kernel binary as most of the other v7 platforms in the tree. \o/ The work isn't quite complete, there's some driver fixes still needed, but the basics now work. New SoC support added: - Freescale i.MX6SX - LSI Axxia AXM55xx SoCs - Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800 - STi STIH407 plus a large set of various smaller updates for different platforms. I'm probably missing some important one here" * tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (281 commits) ARM: exynos: don't run exynos4 l2x0 setup on other platforms ARM: exynos: Fix "allmodconfig" build errors in mcpm and hotplug ARM: EXYNOS: mcpm rename the power_down_finish ARM: EXYNOS: Enable mcpm for dual-cluster exynos5800 SoC ARM: EXYNOS: Enable multi-platform build support ARM: EXYNOS: Consolidate Kconfig entries ARM: EXYNOS: Add support for EXYNOS5410 SoC ARM: EXYNOS: Support secondary CPU boot of Exynos3250 ARM: EXYNOS: Add Exynos3250 SoC ID ARM: EXYNOS: Add 5800 SoC support ARM: EXYNOS: initial board support for exynos5260 SoC clk: exynos5410: register clocks using common clock framework ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084 ARM: sunxi: allow building without reset controller Documentation: devicetree: arm: sort enable-method entries ARM: rockchip: convert smp bringup to CPU_METHOD_OF_DECLARE clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks ARM: dts: axxia: Add reset controller power: reset: Add Axxia system reset driver ARM: axxia: Adding defconfig for AXM55xx ...
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/Kconfig12
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/atmel_tsadcc.c358
3 files changed, 0 insertions, 371 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index b845e9370871..d4e5ab57909f 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -550,18 +550,6 @@ config TOUCHSCREEN_TI_AM335X_TSC
550 To compile this driver as a module, choose M here: the 550 To compile this driver as a module, choose M here: the
551 module will be called ti_am335x_tsc. 551 module will be called ti_am335x_tsc.
552 552
553config TOUCHSCREEN_ATMEL_TSADCC
554 tristate "Atmel Touchscreen Interface"
555 depends on ARCH_AT91
556 help
557 Say Y here if you have a 4-wire touchscreen connected to the
558 ADC Controller on your Atmel SoC.
559
560 If unsure, say N.
561
562 To compile this driver as a module, choose M here: the
563 module will be called atmel_tsadcc.
564
565config TOUCHSCREEN_UCB1400 553config TOUCHSCREEN_UCB1400
566 tristate "Philips UCB1400 touchscreen" 554 tristate "Philips UCB1400 touchscreen"
567 depends on AC97_BUS 555 depends on AC97_BUS
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 4bc954b7c7c3..03f12a1f2218 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -13,7 +13,6 @@ obj-$(CONFIG_TOUCHSCREEN_AD7879_I2C) += ad7879-i2c.o
13obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI) += ad7879-spi.o 13obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI) += ad7879-spi.o
14obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o 14obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o
15obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT) += atmel_mxt_ts.o 15obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT) += atmel_mxt_ts.o
16obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o
17obj-$(CONFIG_TOUCHSCREEN_AUO_PIXCIR) += auo-pixcir-ts.o 16obj-$(CONFIG_TOUCHSCREEN_AUO_PIXCIR) += auo-pixcir-ts.o
18obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o 17obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o
19obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o 18obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o
diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c
deleted file mode 100644
index a7c9d6967d1e..000000000000
--- a/drivers/input/touchscreen/atmel_tsadcc.c
+++ /dev/null
@@ -1,358 +0,0 @@
1/*
2 * Atmel Touch Screen Driver
3 *
4 * Copyright (c) 2008 ATMEL
5 * Copyright (c) 2008 Dan Liang
6 * Copyright (c) 2008 TimeSys Corporation
7 * Copyright (c) 2008 Justin Waters
8 *
9 * Based on touchscreen code from Atmel Corporation.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15#include <linux/err.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/input.h>
19#include <linux/slab.h>
20#include <linux/interrupt.h>
21#include <linux/clk.h>
22#include <linux/platform_device.h>
23#include <linux/io.h>
24#include <linux/platform_data/atmel.h>
25#include <mach/cpu.h>
26
27/* Register definitions based on AT91SAM9RL64 preliminary draft datasheet */
28
29#define ATMEL_TSADCC_CR 0x00 /* Control register */
30#define ATMEL_TSADCC_SWRST (1 << 0) /* Software Reset*/
31#define ATMEL_TSADCC_START (1 << 1) /* Start conversion */
32
33#define ATMEL_TSADCC_MR 0x04 /* Mode register */
34#define ATMEL_TSADCC_TSAMOD (3 << 0) /* ADC mode */
35#define ATMEL_TSADCC_TSAMOD_ADC_ONLY_MODE (0x0) /* ADC Mode */
36#define ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE (0x1) /* Touch Screen Only Mode */
37#define ATMEL_TSADCC_LOWRES (1 << 4) /* Resolution selection */
38#define ATMEL_TSADCC_SLEEP (1 << 5) /* Sleep mode */
39#define ATMEL_TSADCC_PENDET (1 << 6) /* Pen Detect selection */
40#define ATMEL_TSADCC_PRES (1 << 7) /* Pressure Measurement Selection */
41#define ATMEL_TSADCC_PRESCAL (0x3f << 8) /* Prescalar Rate Selection */
42#define ATMEL_TSADCC_EPRESCAL (0xff << 8) /* Prescalar Rate Selection (Extended) */
43#define ATMEL_TSADCC_STARTUP (0x7f << 16) /* Start Up time */
44#define ATMEL_TSADCC_SHTIM (0xf << 24) /* Sample & Hold time */
45#define ATMEL_TSADCC_PENDBC (0xf << 28) /* Pen Detect debouncing time */
46
47#define ATMEL_TSADCC_TRGR 0x08 /* Trigger register */
48#define ATMEL_TSADCC_TRGMOD (7 << 0) /* Trigger mode */
49#define ATMEL_TSADCC_TRGMOD_NONE (0 << 0)
50#define ATMEL_TSADCC_TRGMOD_EXT_RISING (1 << 0)
51#define ATMEL_TSADCC_TRGMOD_EXT_FALLING (2 << 0)
52#define ATMEL_TSADCC_TRGMOD_EXT_ANY (3 << 0)
53#define ATMEL_TSADCC_TRGMOD_PENDET (4 << 0)
54#define ATMEL_TSADCC_TRGMOD_PERIOD (5 << 0)
55#define ATMEL_TSADCC_TRGMOD_CONTINUOUS (6 << 0)
56#define ATMEL_TSADCC_TRGPER (0xffff << 16) /* Trigger period */
57
58#define ATMEL_TSADCC_TSR 0x0C /* Touch Screen register */
59#define ATMEL_TSADCC_TSFREQ (0xf << 0) /* TS Frequency in Interleaved mode */
60#define ATMEL_TSADCC_TSSHTIM (0xf << 24) /* Sample & Hold time */
61
62#define ATMEL_TSADCC_CHER 0x10 /* Channel Enable register */
63#define ATMEL_TSADCC_CHDR 0x14 /* Channel Disable register */
64#define ATMEL_TSADCC_CHSR 0x18 /* Channel Status register */
65#define ATMEL_TSADCC_CH(n) (1 << (n)) /* Channel number */
66
67#define ATMEL_TSADCC_SR 0x1C /* Status register */
68#define ATMEL_TSADCC_EOC(n) (1 << ((n)+0)) /* End of conversion for channel N */
69#define ATMEL_TSADCC_OVRE(n) (1 << ((n)+8)) /* Overrun error for channel N */
70#define ATMEL_TSADCC_DRDY (1 << 16) /* Data Ready */
71#define ATMEL_TSADCC_GOVRE (1 << 17) /* General Overrun Error */
72#define ATMEL_TSADCC_ENDRX (1 << 18) /* End of RX Buffer */
73#define ATMEL_TSADCC_RXBUFF (1 << 19) /* TX Buffer full */
74#define ATMEL_TSADCC_PENCNT (1 << 20) /* Pen contact */
75#define ATMEL_TSADCC_NOCNT (1 << 21) /* No contact */
76
77#define ATMEL_TSADCC_LCDR 0x20 /* Last Converted Data register */
78#define ATMEL_TSADCC_DATA (0x3ff << 0) /* Channel data */
79
80#define ATMEL_TSADCC_IER 0x24 /* Interrupt Enable register */
81#define ATMEL_TSADCC_IDR 0x28 /* Interrupt Disable register */
82#define ATMEL_TSADCC_IMR 0x2C /* Interrupt Mask register */
83#define ATMEL_TSADCC_CDR0 0x30 /* Channel Data 0 */
84#define ATMEL_TSADCC_CDR1 0x34 /* Channel Data 1 */
85#define ATMEL_TSADCC_CDR2 0x38 /* Channel Data 2 */
86#define ATMEL_TSADCC_CDR3 0x3C /* Channel Data 3 */
87#define ATMEL_TSADCC_CDR4 0x40 /* Channel Data 4 */
88#define ATMEL_TSADCC_CDR5 0x44 /* Channel Data 5 */
89
90#define ATMEL_TSADCC_XPOS 0x50
91#define ATMEL_TSADCC_Z1DAT 0x54
92#define ATMEL_TSADCC_Z2DAT 0x58
93
94#define PRESCALER_VAL(x) ((x) >> 8)
95
96#define ADC_DEFAULT_CLOCK 100000
97
98struct atmel_tsadcc {
99 struct input_dev *input;
100 char phys[32];
101 struct clk *clk;
102 int irq;
103 unsigned int prev_absx;
104 unsigned int prev_absy;
105 unsigned char bufferedmeasure;
106};
107
108static void __iomem *tsc_base;
109
110#define atmel_tsadcc_read(reg) __raw_readl(tsc_base + (reg))
111#define atmel_tsadcc_write(reg, val) __raw_writel((val), tsc_base + (reg))
112
113static irqreturn_t atmel_tsadcc_interrupt(int irq, void *dev)
114{
115 struct atmel_tsadcc *ts_dev = (struct atmel_tsadcc *)dev;
116 struct input_dev *input_dev = ts_dev->input;
117
118 unsigned int status;
119 unsigned int reg;
120
121 status = atmel_tsadcc_read(ATMEL_TSADCC_SR);
122 status &= atmel_tsadcc_read(ATMEL_TSADCC_IMR);
123
124 if (status & ATMEL_TSADCC_NOCNT) {
125 /* Contact lost */
126 reg = atmel_tsadcc_read(ATMEL_TSADCC_MR) | ATMEL_TSADCC_PENDBC;
127
128 atmel_tsadcc_write(ATMEL_TSADCC_MR, reg);
129 atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE);
130 atmel_tsadcc_write(ATMEL_TSADCC_IDR,
131 ATMEL_TSADCC_EOC(3) | ATMEL_TSADCC_NOCNT);
132 atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT);
133
134 input_report_key(input_dev, BTN_TOUCH, 0);
135 ts_dev->bufferedmeasure = 0;
136 input_sync(input_dev);
137
138 } else if (status & ATMEL_TSADCC_PENCNT) {
139 /* Pen detected */
140 reg = atmel_tsadcc_read(ATMEL_TSADCC_MR);
141 reg &= ~ATMEL_TSADCC_PENDBC;
142
143 atmel_tsadcc_write(ATMEL_TSADCC_IDR, ATMEL_TSADCC_PENCNT);
144 atmel_tsadcc_write(ATMEL_TSADCC_MR, reg);
145 atmel_tsadcc_write(ATMEL_TSADCC_IER,
146 ATMEL_TSADCC_EOC(3) | ATMEL_TSADCC_NOCNT);
147 atmel_tsadcc_write(ATMEL_TSADCC_TRGR,
148 ATMEL_TSADCC_TRGMOD_PERIOD | (0x0FFF << 16));
149
150 } else if (status & ATMEL_TSADCC_EOC(3)) {
151 /* Conversion finished */
152
153 if (ts_dev->bufferedmeasure) {
154 /* Last measurement is always discarded, since it can
155 * be erroneous.
156 * Always report previous measurement */
157 input_report_abs(input_dev, ABS_X, ts_dev->prev_absx);
158 input_report_abs(input_dev, ABS_Y, ts_dev->prev_absy);
159 input_report_key(input_dev, BTN_TOUCH, 1);
160 input_sync(input_dev);
161 } else
162 ts_dev->bufferedmeasure = 1;
163
164 /* Now make new measurement */
165 ts_dev->prev_absx = atmel_tsadcc_read(ATMEL_TSADCC_CDR3) << 10;
166 ts_dev->prev_absx /= atmel_tsadcc_read(ATMEL_TSADCC_CDR2);
167
168 ts_dev->prev_absy = atmel_tsadcc_read(ATMEL_TSADCC_CDR1) << 10;
169 ts_dev->prev_absy /= atmel_tsadcc_read(ATMEL_TSADCC_CDR0);
170 }
171
172 return IRQ_HANDLED;
173}
174
175/*
176 * The functions for inserting/removing us as a module.
177 */
178
179static int atmel_tsadcc_probe(struct platform_device *pdev)
180{
181 struct atmel_tsadcc *ts_dev;
182 struct input_dev *input_dev;
183 struct resource *res;
184 struct at91_tsadcc_data *pdata = dev_get_platdata(&pdev->dev);
185 int err;
186 unsigned int prsc;
187 unsigned int reg;
188
189 if (!pdata)
190 return -EINVAL;
191
192 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
193 if (!res) {
194 dev_err(&pdev->dev, "no mmio resource defined.\n");
195 return -ENXIO;
196 }
197
198 /* Allocate memory for device */
199 ts_dev = kzalloc(sizeof(struct atmel_tsadcc), GFP_KERNEL);
200 if (!ts_dev) {
201 dev_err(&pdev->dev, "failed to allocate memory.\n");
202 return -ENOMEM;
203 }
204 platform_set_drvdata(pdev, ts_dev);
205
206 input_dev = input_allocate_device();
207 if (!input_dev) {
208 dev_err(&pdev->dev, "failed to allocate input device.\n");
209 err = -EBUSY;
210 goto err_free_mem;
211 }
212
213 ts_dev->irq = platform_get_irq(pdev, 0);
214 if (ts_dev->irq < 0) {
215 dev_err(&pdev->dev, "no irq ID is designated.\n");
216 err = -ENODEV;
217 goto err_free_dev;
218 }
219
220 if (!request_mem_region(res->start, resource_size(res),
221 "atmel tsadcc regs")) {
222 dev_err(&pdev->dev, "resources is unavailable.\n");
223 err = -EBUSY;
224 goto err_free_dev;
225 }
226
227 tsc_base = ioremap(res->start, resource_size(res));
228 if (!tsc_base) {
229 dev_err(&pdev->dev, "failed to map registers.\n");
230 err = -ENOMEM;
231 goto err_release_mem;
232 }
233
234 err = request_irq(ts_dev->irq, atmel_tsadcc_interrupt, 0,
235 pdev->dev.driver->name, ts_dev);
236 if (err) {
237 dev_err(&pdev->dev, "failed to allocate irq.\n");
238 goto err_unmap_regs;
239 }
240
241 ts_dev->clk = clk_get(&pdev->dev, "tsc_clk");
242 if (IS_ERR(ts_dev->clk)) {
243 dev_err(&pdev->dev, "failed to get ts_clk\n");
244 err = PTR_ERR(ts_dev->clk);
245 goto err_free_irq;
246 }
247
248 ts_dev->input = input_dev;
249 ts_dev->bufferedmeasure = 0;
250
251 snprintf(ts_dev->phys, sizeof(ts_dev->phys),
252 "%s/input0", dev_name(&pdev->dev));
253
254 input_dev->name = "atmel touch screen controller";
255 input_dev->phys = ts_dev->phys;
256 input_dev->dev.parent = &pdev->dev;
257
258 __set_bit(EV_ABS, input_dev->evbit);
259 input_set_abs_params(input_dev, ABS_X, 0, 0x3FF, 0, 0);
260 input_set_abs_params(input_dev, ABS_Y, 0, 0x3FF, 0, 0);
261
262 input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
263
264 /* clk_enable() always returns 0, no need to check it */
265 clk_enable(ts_dev->clk);
266
267 prsc = clk_get_rate(ts_dev->clk);
268 dev_info(&pdev->dev, "Master clock is set at: %d Hz\n", prsc);
269
270 if (!pdata->adc_clock)
271 pdata->adc_clock = ADC_DEFAULT_CLOCK;
272
273 prsc = (prsc / (2 * pdata->adc_clock)) - 1;
274
275 /* saturate if this value is too high */
276 if (cpu_is_at91sam9rl()) {
277 if (prsc > PRESCALER_VAL(ATMEL_TSADCC_PRESCAL))
278 prsc = PRESCALER_VAL(ATMEL_TSADCC_PRESCAL);
279 } else {
280 if (prsc > PRESCALER_VAL(ATMEL_TSADCC_EPRESCAL))
281 prsc = PRESCALER_VAL(ATMEL_TSADCC_EPRESCAL);
282 }
283
284 dev_info(&pdev->dev, "Prescaler is set at: %d\n", prsc);
285
286 reg = ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE |
287 ((0x00 << 5) & ATMEL_TSADCC_SLEEP) | /* Normal Mode */
288 ((0x01 << 6) & ATMEL_TSADCC_PENDET) | /* Enable Pen Detect */
289 (prsc << 8) |
290 ((0x26 << 16) & ATMEL_TSADCC_STARTUP) |
291 ((pdata->pendet_debounce << 28) & ATMEL_TSADCC_PENDBC);
292
293 atmel_tsadcc_write(ATMEL_TSADCC_CR, ATMEL_TSADCC_SWRST);
294 atmel_tsadcc_write(ATMEL_TSADCC_MR, reg);
295 atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE);
296 atmel_tsadcc_write(ATMEL_TSADCC_TSR,
297 (pdata->ts_sample_hold_time << 24) & ATMEL_TSADCC_TSSHTIM);
298
299 atmel_tsadcc_read(ATMEL_TSADCC_SR);
300 atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT);
301
302 /* All went ok, so register to the input system */
303 err = input_register_device(input_dev);
304 if (err)
305 goto err_fail;
306
307 return 0;
308
309err_fail:
310 clk_disable(ts_dev->clk);
311 clk_put(ts_dev->clk);
312err_free_irq:
313 free_irq(ts_dev->irq, ts_dev);
314err_unmap_regs:
315 iounmap(tsc_base);
316err_release_mem:
317 release_mem_region(res->start, resource_size(res));
318err_free_dev:
319 input_free_device(input_dev);
320err_free_mem:
321 kfree(ts_dev);
322 return err;
323}
324
325static int atmel_tsadcc_remove(struct platform_device *pdev)
326{
327 struct atmel_tsadcc *ts_dev = platform_get_drvdata(pdev);
328 struct resource *res;
329
330 free_irq(ts_dev->irq, ts_dev);
331
332 input_unregister_device(ts_dev->input);
333
334 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
335 iounmap(tsc_base);
336 release_mem_region(res->start, resource_size(res));
337
338 clk_disable(ts_dev->clk);
339 clk_put(ts_dev->clk);
340
341 kfree(ts_dev);
342
343 return 0;
344}
345
346static struct platform_driver atmel_tsadcc_driver = {
347 .probe = atmel_tsadcc_probe,
348 .remove = atmel_tsadcc_remove,
349 .driver = {
350 .name = "atmel_tsadcc",
351 },
352};
353module_platform_driver(atmel_tsadcc_driver);
354
355MODULE_LICENSE("GPL");
356MODULE_DESCRIPTION("Atmel TouchScreen Driver");
357MODULE_AUTHOR("Dan Liang <dan.liang@atmel.com>");
358
generated by cgit v1.2.2 (git 2.25.0) at 2026-04-05 21:56:56 -0400