mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/pwm/pwm-hibvt.c
..
..
@@ -1,20 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  * PWM Controller Driver for HiSilicon BVT SoCs
3
4
  *
4
5
  * Copyright (c) 2016 HiSilicon Technologies Co., Ltd.
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License as published by
8
- * the Free Software Foundation; either version 2 of the License, or
9
- * (at your option) any later version.
10
- *
11
- * This program is distributed in the hope that it will be useful,
12
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
- * GNU General Public License for more details.
15
- *
16
- * You should have received a copy of the GNU General Public License
17
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
18
6
  */
19
7
 
20
8
 #include <linux/bitops.h>
..
..
@@ -49,15 +37,30 @@
49
37
 	struct clk *clk;
50
38
 	void __iomem *base;
51
39
 	struct reset_control *rstc;
40
+	const struct hibvt_pwm_soc *soc;
52
41
 };
53
42
 
54
43
 struct hibvt_pwm_soc {
55
44
 	u32 num_pwms;
45
+	bool quirk_force_enable;
56
46
 };
57
47
 
58
-static const struct hibvt_pwm_soc pwm_soc[2] = {
59
-	{ .num_pwms = 4 },
60
-	{ .num_pwms = 8 },
48
+static const struct hibvt_pwm_soc hi3516cv300_soc_info = {
49
+	.num_pwms = 4,
50
+};
51
+
52
+static const struct hibvt_pwm_soc hi3519v100_soc_info = {
53
+	.num_pwms = 8,
54
+};
55
+
56
+static const struct hibvt_pwm_soc hi3559v100_shub_soc_info = {
57
+	.num_pwms = 8,
58
+	.quirk_force_enable = true,
59
+};
60
+
61
+static const struct hibvt_pwm_soc hi3559v100_soc_info = {
62
+	.num_pwms = 2,
63
+	.quirk_force_enable = true,
61
64
 };
62
65
 
63
66
 static inline struct hibvt_pwm_chip *to_hibvt_pwm_chip(struct pwm_chip *chip)
..
..
@@ -146,14 +149,24 @@
146
149
 }
147
150
 
148
151
 static int hibvt_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
149
-				struct pwm_state *state)
152
+			   const struct pwm_state *state)
150
153
 {
154
+	struct hibvt_pwm_chip *hi_pwm_chip = to_hibvt_pwm_chip(chip);
155
+
151
156
 	if (state->polarity != pwm->state.polarity)
152
157
 		hibvt_pwm_set_polarity(chip, pwm, state->polarity);
153
158
 
154
159
 	if (state->period != pwm->state.period ||
155
-		state->duty_cycle != pwm->state.duty_cycle)
160
+	    state->duty_cycle != pwm->state.duty_cycle) {
156
161
 		hibvt_pwm_config(chip, pwm, state->duty_cycle, state->period);
162
+
163
+		/*
164
+		 * Some implementations require the PWM to be enabled twice
165
+		 * each time the duty cycle is refreshed.
166
+		 */
167
+		if (hi_pwm_chip->soc->quirk_force_enable && state->enabled)
168
+			hibvt_pwm_enable(chip, pwm);
169
+	}
157
170
 
158
171
 	if (state->enabled != pwm->state.enabled) {
159
172
 		if (state->enabled)
..
..
@@ -198,6 +211,7 @@
198
211
 	pwm_chip->chip.npwm = soc->num_pwms;
199
212
 	pwm_chip->chip.of_xlate = of_pwm_xlate_with_flags;
200
213
 	pwm_chip->chip.of_pwm_n_cells = 3;
214
+	pwm_chip->soc = soc;
201
215
 
202
216
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
203
217
 	pwm_chip->base = devm_ioremap_resource(&pdev->dev, res);
..
..
@@ -250,8 +264,14 @@
250
264
 }
251
265
 
252
266
 static const struct of_device_id hibvt_pwm_of_match[] = {
253
-	{ .compatible = "hisilicon,hi3516cv300-pwm", .data = &pwm_soc[0] },
254
-	{ .compatible = "hisilicon,hi3519v100-pwm", .data = &pwm_soc[1] },
267
+	{ .compatible = "hisilicon,hi3516cv300-pwm",
268
+	  .data = &hi3516cv300_soc_info },
269
+	{ .compatible = "hisilicon,hi3519v100-pwm",
270
+	  .data = &hi3519v100_soc_info },
271
+	{ .compatible = "hisilicon,hi3559v100-shub-pwm",
272
+	  .data = &hi3559v100_shub_soc_info },
273
+	{ .compatible = "hisilicon,hi3559v100-pwm",
274
+	  .data = &hi3559v100_soc_info },
255
275
 	{  }
256
276
 };
257
277
 MODULE_DEVICE_TABLE(of, hibvt_pwm_of_match);