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-rw-r--r--MAINTAINERS1
-rw-r--r--drivers/staging/iio/Kconfig1
-rw-r--r--drivers/staging/iio/Makefile1
-rw-r--r--drivers/staging/iio/trigger/Kconfig19
-rw-r--r--drivers/staging/iio/trigger/Makefile5
-rw-r--r--drivers/staging/iio/trigger/iio-trig-bfin-timer.c292
-rw-r--r--drivers/staging/iio/trigger/iio-trig-bfin-timer.h25
7 files changed, 0 insertions, 344 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index c06fcd0e1514..48486a505a4e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -866,7 +866,6 @@ F: drivers/iio/*/ad*
866F: drivers/iio/adc/ltc2497* 866F: drivers/iio/adc/ltc2497*
867X: drivers/iio/*/adjd* 867X: drivers/iio/*/adjd*
868F: drivers/staging/iio/*/ad* 868F: drivers/staging/iio/*/ad*
869F: drivers/staging/iio/trigger/iio-trig-bfin-timer.c
870 869
871ANDROID CONFIG FRAGMENTS 870ANDROID CONFIG FRAGMENTS
872M: Rob Herring <robh@kernel.org> 871M: Rob Herring <robh@kernel.org>
diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
index 8abc1ab3c0c7..bd9445956511 100644
--- a/drivers/staging/iio/Kconfig
+++ b/drivers/staging/iio/Kconfig
@@ -14,6 +14,5 @@ source "drivers/staging/iio/impedance-analyzer/Kconfig"
14source "drivers/staging/iio/light/Kconfig" 14source "drivers/staging/iio/light/Kconfig"
15source "drivers/staging/iio/meter/Kconfig" 15source "drivers/staging/iio/meter/Kconfig"
16source "drivers/staging/iio/resolver/Kconfig" 16source "drivers/staging/iio/resolver/Kconfig"
17source "drivers/staging/iio/trigger/Kconfig"
18 17
19endmenu 18endmenu
diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile
index 455bffc29649..e99a375c07b9 100644
--- a/drivers/staging/iio/Makefile
+++ b/drivers/staging/iio/Makefile
@@ -13,4 +13,3 @@ obj-y += impedance-analyzer/
13obj-y += light/ 13obj-y += light/
14obj-y += meter/ 14obj-y += meter/
15obj-y += resolver/ 15obj-y += resolver/
16obj-y += trigger/
diff --git a/drivers/staging/iio/trigger/Kconfig b/drivers/staging/iio/trigger/Kconfig
deleted file mode 100644
index 0b01d24cea51..000000000000
--- a/drivers/staging/iio/trigger/Kconfig
+++ /dev/null
@@ -1,19 +0,0 @@
1 #
2# Industrial I/O standalone triggers
3#
4comment "Triggers - standalone"
5
6if IIO_TRIGGER
7
8config IIO_BFIN_TMR_TRIGGER
9 tristate "Blackfin TIMER trigger"
10 depends on BLACKFIN
11 select BFIN_GPTIMERS
12 help
13 Provides support for using a Blackfin timer as IIO triggers.
14 If unsure, say N (but it's safe to say "Y").
15
16 To compile this driver as a module, choose M here: the
17 module will be called iio-trig-bfin-timer.
18
19endif # IIO_TRIGGER
diff --git a/drivers/staging/iio/trigger/Makefile b/drivers/staging/iio/trigger/Makefile
deleted file mode 100644
index 1300a21363db..000000000000
--- a/drivers/staging/iio/trigger/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1#
2# Makefile for triggers not associated with iio-devices
3#
4
5obj-$(CONFIG_IIO_BFIN_TMR_TRIGGER) += iio-trig-bfin-timer.o
diff --git a/drivers/staging/iio/trigger/iio-trig-bfin-timer.c b/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
deleted file mode 100644
index 71f11d7472c0..000000000000
--- a/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
+++ /dev/null
@@ -1,292 +0,0 @@
1/*
2 * Copyright 2011 Analog Devices Inc.
3 *
4 * Licensed under the GPL-2.
5 *
6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/slab.h>
12#include <linux/interrupt.h>
13#include <linux/irq.h>
14#include <linux/delay.h>
15
16#include <asm/gptimers.h>
17#include <asm/portmux.h>
18
19#include <linux/iio/iio.h>
20#include <linux/iio/trigger.h>
21
22#include "iio-trig-bfin-timer.h"
23
24struct bfin_timer {
25 unsigned short id, bit;
26 unsigned long irqbit;
27 int irq;
28 int pin;
29};
30
31/*
32 * this covers all hardware timer configurations on
33 * all Blackfin derivatives out there today
34 */
35
36static struct bfin_timer iio_bfin_timer_code[MAX_BLACKFIN_GPTIMERS] = {
37 {TIMER0_id, TIMER0bit, TIMER_STATUS_TIMIL0, IRQ_TIMER0, P_TMR0},
38 {TIMER1_id, TIMER1bit, TIMER_STATUS_TIMIL1, IRQ_TIMER1, P_TMR1},
39 {TIMER2_id, TIMER2bit, TIMER_STATUS_TIMIL2, IRQ_TIMER2, P_TMR2},
40#if (MAX_BLACKFIN_GPTIMERS > 3)
41 {TIMER3_id, TIMER3bit, TIMER_STATUS_TIMIL3, IRQ_TIMER3, P_TMR3},
42 {TIMER4_id, TIMER4bit, TIMER_STATUS_TIMIL4, IRQ_TIMER4, P_TMR4},
43 {TIMER5_id, TIMER5bit, TIMER_STATUS_TIMIL5, IRQ_TIMER5, P_TMR5},
44 {TIMER6_id, TIMER6bit, TIMER_STATUS_TIMIL6, IRQ_TIMER6, P_TMR6},
45 {TIMER7_id, TIMER7bit, TIMER_STATUS_TIMIL7, IRQ_TIMER7, P_TMR7},
46#endif
47#if (MAX_BLACKFIN_GPTIMERS > 8)
48 {TIMER8_id, TIMER8bit, TIMER_STATUS_TIMIL8, IRQ_TIMER8, P_TMR8},
49 {TIMER9_id, TIMER9bit, TIMER_STATUS_TIMIL9, IRQ_TIMER9, P_TMR9},
50 {TIMER10_id, TIMER10bit, TIMER_STATUS_TIMIL10, IRQ_TIMER10, P_TMR10},
51#if (MAX_BLACKFIN_GPTIMERS > 11)
52 {TIMER11_id, TIMER11bit, TIMER_STATUS_TIMIL11, IRQ_TIMER11, P_TMR11},
53#endif
54#endif
55};
56
57struct bfin_tmr_state {
58 struct iio_trigger *trig;
59 struct bfin_timer *t;
60 unsigned int timer_num;
61 bool output_enable;
62 unsigned int duty;
63 int irq;
64};
65
66static int iio_bfin_tmr_set_state(struct iio_trigger *trig, bool state)
67{
68 struct bfin_tmr_state *st = iio_trigger_get_drvdata(trig);
69
70 if (get_gptimer_period(st->t->id) == 0)
71 return -EINVAL;
72
73 if (state)
74 enable_gptimers(st->t->bit);
75 else
76 disable_gptimers(st->t->bit);
77
78 return 0;
79}
80
81static ssize_t frequency_store(struct device *dev,
82 struct device_attribute *attr,
83 const char *buf, size_t count)
84{
85 struct iio_trigger *trig = to_iio_trigger(dev);
86 struct bfin_tmr_state *st = iio_trigger_get_drvdata(trig);
87 unsigned int val;
88 bool enabled;
89 int ret;
90
91 ret = kstrtouint(buf, 10, &val);
92 if (ret)
93 return ret;
94
95 if (val > 100000)
96 return -EINVAL;
97
98 enabled = get_enabled_gptimers() & st->t->bit;
99
100 if (enabled)
101 disable_gptimers(st->t->bit);
102
103 if (!val)
104 return count;
105
106 val = get_sclk() / val;
107 if (val <= 4 || val <= st->duty)
108 return -EINVAL;
109
110 set_gptimer_period(st->t->id, val);
111 set_gptimer_pwidth(st->t->id, val - st->duty);
112
113 if (enabled)
114 enable_gptimers(st->t->bit);
115
116 return count;
117}
118
119static ssize_t frequency_show(struct device *dev,
120 struct device_attribute *attr,
121 char *buf)
122{
123 struct iio_trigger *trig = to_iio_trigger(dev);
124 struct bfin_tmr_state *st = iio_trigger_get_drvdata(trig);
125 unsigned int period = get_gptimer_period(st->t->id);
126 unsigned long val;
127
128 if (!period)
129 val = 0;
130 else
131 val = get_sclk() / get_gptimer_period(st->t->id);
132
133 return sprintf(buf, "%lu\n", val);
134}
135
136static DEVICE_ATTR_RW(frequency);
137
138static struct attribute *iio_bfin_tmr_trigger_attrs[] = {
139 &dev_attr_frequency.attr,
140 NULL,
141};
142
143static const struct attribute_group iio_bfin_tmr_trigger_attr_group = {
144 .attrs = iio_bfin_tmr_trigger_attrs,
145};
146
147static const struct attribute_group *iio_bfin_tmr_trigger_attr_groups[] = {
148 &iio_bfin_tmr_trigger_attr_group,
149 NULL
150};
151
152static irqreturn_t iio_bfin_tmr_trigger_isr(int irq, void *devid)
153{
154 struct bfin_tmr_state *st = devid;
155
156 clear_gptimer_intr(st->t->id);
157 iio_trigger_poll(st->trig);
158
159 return IRQ_HANDLED;
160}
161
162static int iio_bfin_tmr_get_number(int irq)
163{
164 int i;
165
166 for (i = 0; i < MAX_BLACKFIN_GPTIMERS; i++)
167 if (iio_bfin_timer_code[i].irq == irq)
168 return i;
169
170 return -ENODEV;
171}
172
173static const struct iio_trigger_ops iio_bfin_tmr_trigger_ops = {
174 .set_trigger_state = iio_bfin_tmr_set_state,
175};
176
177static int iio_bfin_tmr_trigger_probe(struct platform_device *pdev)
178{
179 struct iio_bfin_timer_trigger_pdata *pdata;
180 struct bfin_tmr_state *st;
181 unsigned int config;
182 int ret;
183
184 st = devm_kzalloc(&pdev->dev, sizeof(*st), GFP_KERNEL);
185 if (!st)
186 return -ENOMEM;
187
188 st->irq = platform_get_irq(pdev, 0);
189 if (st->irq < 0) {
190 dev_err(&pdev->dev, "No IRQs specified");
191 return st->irq;
192 }
193
194 ret = iio_bfin_tmr_get_number(st->irq);
195 if (ret < 0)
196 return ret;
197
198 st->timer_num = ret;
199 st->t = &iio_bfin_timer_code[st->timer_num];
200
201 st->trig = iio_trigger_alloc("bfintmr%d", st->timer_num);
202 if (!st->trig)
203 return -ENOMEM;
204
205 st->trig->ops = &iio_bfin_tmr_trigger_ops;
206 st->trig->dev.groups = iio_bfin_tmr_trigger_attr_groups;
207 iio_trigger_set_drvdata(st->trig, st);
208 ret = iio_trigger_register(st->trig);
209 if (ret)
210 goto out;
211
212 ret = request_irq(st->irq, iio_bfin_tmr_trigger_isr,
213 0, st->trig->name, st);
214 if (ret) {
215 dev_err(&pdev->dev,
216 "request IRQ-%d failed", st->irq);
217 goto out1;
218 }
219
220 config = PWM_OUT | PERIOD_CNT | IRQ_ENA;
221
222 pdata = dev_get_platdata(&pdev->dev);
223 if (pdata && pdata->output_enable) {
224 unsigned long long val;
225
226 st->output_enable = true;
227
228 ret = peripheral_request(st->t->pin, st->trig->name);
229 if (ret)
230 goto out_free_irq;
231
232 val = (unsigned long long)get_sclk() * pdata->duty_ns;
233 do_div(val, NSEC_PER_SEC);
234 st->duty = val;
235
236 /**
237 * The interrupt will be generated at the end of the period,
238 * since we want the interrupt to be generated at end of the
239 * pulse we invert both polarity and duty cycle, so that the
240 * pulse will be generated directly before the interrupt.
241 */
242 if (pdata->active_low)
243 config |= PULSE_HI;
244 } else {
245 st->duty = 1;
246 config |= OUT_DIS;
247 }
248
249 set_gptimer_config(st->t->id, config);
250
251 dev_info(&pdev->dev, "iio trigger Blackfin TMR%d, IRQ-%d",
252 st->timer_num, st->irq);
253 platform_set_drvdata(pdev, st);
254
255 return 0;
256out_free_irq:
257 free_irq(st->irq, st);
258out1:
259 iio_trigger_unregister(st->trig);
260out:
261 iio_trigger_free(st->trig);
262 return ret;
263}
264
265static int iio_bfin_tmr_trigger_remove(struct platform_device *pdev)
266{
267 struct bfin_tmr_state *st = platform_get_drvdata(pdev);
268
269 disable_gptimers(st->t->bit);
270 if (st->output_enable)
271 peripheral_free(st->t->pin);
272 free_irq(st->irq, st);
273 iio_trigger_unregister(st->trig);
274 iio_trigger_free(st->trig);
275
276 return 0;
277}
278
279static struct platform_driver iio_bfin_tmr_trigger_driver = {
280 .driver = {
281 .name = "iio_bfin_tmr_trigger",
282 },
283 .probe = iio_bfin_tmr_trigger_probe,
284 .remove = iio_bfin_tmr_trigger_remove,
285};
286
287module_platform_driver(iio_bfin_tmr_trigger_driver);
288
289MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
290MODULE_DESCRIPTION("Blackfin system timer based trigger for the iio subsystem");
291MODULE_LICENSE("GPL v2");
292MODULE_ALIAS("platform:iio-trig-bfin-timer");
diff --git a/drivers/staging/iio/trigger/iio-trig-bfin-timer.h b/drivers/staging/iio/trigger/iio-trig-bfin-timer.h
deleted file mode 100644
index fb05a2a8397c..000000000000
--- a/drivers/staging/iio/trigger/iio-trig-bfin-timer.h
+++ /dev/null
@@ -1,25 +0,0 @@
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __IIO_BFIN_TIMER_TRIGGER_H__
3#define __IIO_BFIN_TIMER_TRIGGER_H__
4
5/**
6 * struct iio_bfin_timer_trigger_pdata - timer trigger platform data
7 * @output_enable: Enable external trigger pulse generation.
8 * @active_low: Whether the trigger pulse is active low.
9 * @duty_ns: Length of the trigger pulse in nanoseconds.
10 *
11 * This struct is used to configure the output pulse generation of the blackfin
12 * timer trigger. If output_enable is set to true an external trigger signal
13 * will generated on the pin corresponding to the timer. This is useful for
14 * converters which needs an external signal to start conversion. active_low and
15 * duty_ns are used to configure the type of the trigger pulse. If output_enable
16 * is set to false no external trigger pulse will be generated and active_low
17 * and duty_ns are ignored.
18 **/
19struct iio_bfin_timer_trigger_pdata {
20 bool output_enable;
21 bool active_low;
22 unsigned int duty_ns;
23};
24
25#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-31 02:49:20 -0500