add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/leds/leds-sc27xx-bltc.c
..
..
@@ -6,7 +6,6 @@
6
6
 #include <linux/of.h>
7
7
 #include <linux/platform_device.h>
8
8
 #include <linux/regmap.h>
9
-#include <uapi/linux/uleds.h>
10
9
 
11
10
 /* PMIC global control register definition */
12
11
 #define SC27XX_MODULE_EN0	0xc08
..
..
@@ -32,11 +31,21 @@
32
31
 #define SC27XX_DUTY_MASK	GENMASK(15, 0)
33
32
 #define SC27XX_MOD_MASK		GENMASK(7, 0)
34
33
 
34
+#define SC27XX_CURVE_SHIFT	8
35
+#define SC27XX_CURVE_L_MASK	GENMASK(7, 0)
36
+#define SC27XX_CURVE_H_MASK	GENMASK(15, 8)
37
+
35
38
 #define SC27XX_LEDS_OFFSET	0x10
36
39
 #define SC27XX_LEDS_MAX		3
40
+#define SC27XX_LEDS_PATTERN_CNT	4
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+/* Stage duration step, in milliseconds */
42
+#define SC27XX_LEDS_STEP	125
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+/* Minimum and maximum duration, in milliseconds */
44
+#define SC27XX_DELTA_T_MIN	SC27XX_LEDS_STEP
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+#define SC27XX_DELTA_T_MAX	(SC27XX_LEDS_STEP * 255)
37
46
 
38
47
 struct sc27xx_led {
39
-	char name[LED_MAX_NAME_SIZE];
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+	struct fwnode_handle *fwnode;
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49
 	struct led_classdev ldev;
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50
 	struct sc27xx_led_priv *priv;
42
51
 	u8 line;
..
..
@@ -122,6 +131,113 @@
122
131
 	return err;
123
132
 }
124
133
 
134
+static void sc27xx_led_clamp_align_delta_t(u32 *delta_t)
135
+{
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+	u32 v, offset, t = *delta_t;
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+
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+	v = t + SC27XX_LEDS_STEP / 2;
139
+	v = clamp_t(u32, v, SC27XX_DELTA_T_MIN, SC27XX_DELTA_T_MAX);
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+	offset = v - SC27XX_DELTA_T_MIN;
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+	offset = SC27XX_LEDS_STEP * (offset / SC27XX_LEDS_STEP);
142
+
143
+	*delta_t = SC27XX_DELTA_T_MIN + offset;
144
+}
145
+
146
+static int sc27xx_led_pattern_clear(struct led_classdev *ldev)
147
+{
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+	struct sc27xx_led *leds = to_sc27xx_led(ldev);
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+	struct regmap *regmap = leds->priv->regmap;
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+	u32 base = sc27xx_led_get_offset(leds);
151
+	u32 ctrl_base = leds->priv->base + SC27XX_LEDS_CTRL;
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+	u8 ctrl_shift = SC27XX_CTRL_SHIFT * leds->line;
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+	int err;
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+
155
+	mutex_lock(&leds->priv->lock);
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+
157
+	/* Reset the rise, high, fall and low time to zero. */
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+	regmap_write(regmap, base + SC27XX_LEDS_CURVE0, 0);
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+	regmap_write(regmap, base + SC27XX_LEDS_CURVE1, 0);
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+
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+	err = regmap_update_bits(regmap, ctrl_base,
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+			(SC27XX_LED_RUN | SC27XX_LED_TYPE) << ctrl_shift, 0);
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+
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+	ldev->brightness = LED_OFF;
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+
166
+	mutex_unlock(&leds->priv->lock);
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+
168
+	return err;
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+}
170
+
171
+static int sc27xx_led_pattern_set(struct led_classdev *ldev,
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+				  struct led_pattern *pattern,
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+				  u32 len, int repeat)
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+{
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+	struct sc27xx_led *leds = to_sc27xx_led(ldev);
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+	u32 base = sc27xx_led_get_offset(leds);
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+	u32 ctrl_base = leds->priv->base + SC27XX_LEDS_CTRL;
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+	u8 ctrl_shift = SC27XX_CTRL_SHIFT * leds->line;
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+	struct regmap *regmap = leds->priv->regmap;
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+	int err;
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+
182
+	/*
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+	 * Must contain 4 tuples to configure the rise time, high time, fall
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+	 * time and low time to enable the breathing mode.
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+	 */
186
+	if (len != SC27XX_LEDS_PATTERN_CNT)
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+		return -EINVAL;
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+
189
+	mutex_lock(&leds->priv->lock);
190
+
191
+	sc27xx_led_clamp_align_delta_t(&pattern[0].delta_t);
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+	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE0,
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+				 SC27XX_CURVE_L_MASK,
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+				 pattern[0].delta_t / SC27XX_LEDS_STEP);
195
+	if (err)
196
+		goto out;
197
+
198
+	sc27xx_led_clamp_align_delta_t(&pattern[1].delta_t);
199
+	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE1,
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+				 SC27XX_CURVE_L_MASK,
201
+				 pattern[1].delta_t / SC27XX_LEDS_STEP);
202
+	if (err)
203
+		goto out;
204
+
205
+	sc27xx_led_clamp_align_delta_t(&pattern[2].delta_t);
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+	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE0,
207
+				 SC27XX_CURVE_H_MASK,
208
+				 (pattern[2].delta_t / SC27XX_LEDS_STEP) <<
209
+				 SC27XX_CURVE_SHIFT);
210
+	if (err)
211
+		goto out;
212
+
213
+	sc27xx_led_clamp_align_delta_t(&pattern[3].delta_t);
214
+	err = regmap_update_bits(regmap, base + SC27XX_LEDS_CURVE1,
215
+				 SC27XX_CURVE_H_MASK,
216
+				 (pattern[3].delta_t / SC27XX_LEDS_STEP) <<
217
+				 SC27XX_CURVE_SHIFT);
218
+	if (err)
219
+		goto out;
220
+
221
+	err = regmap_update_bits(regmap, base + SC27XX_LEDS_DUTY,
222
+				 SC27XX_DUTY_MASK,
223
+				 (pattern[1].brightness << SC27XX_DUTY_SHIFT) |
224
+				 SC27XX_MOD_MASK);
225
+	if (err)
226
+		goto out;
227
+
228
+	/* Enable the LED breathing mode */
229
+	err = regmap_update_bits(regmap, ctrl_base,
230
+				 SC27XX_LED_RUN << ctrl_shift,
231
+				 SC27XX_LED_RUN << ctrl_shift);
232
+	if (!err)
233
+		ldev->brightness = pattern[1].brightness;
234
+
235
+out:
236
+	mutex_unlock(&leds->priv->lock);
237
+
238
+	return err;
239
+}
240
+
125
241
 static int sc27xx_led_register(struct device *dev, struct sc27xx_led_priv *priv)
126
242
 {
127
243
 	int i, err;
..
..
@@ -132,16 +248,24 @@
132
248
 
133
249
 	for (i = 0; i < SC27XX_LEDS_MAX; i++) {
134
250
 		struct sc27xx_led *led = &priv->leds[i];
251
+		struct led_init_data init_data = {};
135
252
 
136
253
 		if (!led->active)
137
254
 			continue;
138
255
 
139
256
 		led->line = i;
140
257
 		led->priv = priv;
141
-		led->ldev.name = led->name;
142
258
 		led->ldev.brightness_set_blocking = sc27xx_led_set;
259
+		led->ldev.pattern_set = sc27xx_led_pattern_set;
260
+		led->ldev.pattern_clear = sc27xx_led_pattern_clear;
261
+		led->ldev.default_trigger = "pattern";
143
262
 
144
-		err = devm_led_classdev_register(dev, &led->ldev);
263
+		init_data.fwnode = led->fwnode;
264
+		init_data.devicename = "sc27xx";
265
+		init_data.default_label = ":";
266
+
267
+		err = devm_led_classdev_register_ext(dev, &led->ldev,
268
+						     &init_data);
145
269
 		if (err)
146
270
 			return err;
147
271
 	}
..
..
@@ -152,13 +276,12 @@
152
276
 static int sc27xx_led_probe(struct platform_device *pdev)
153
277
 {
154
278
 	struct device *dev = &pdev->dev;
155
-	struct device_node *np = dev->of_node, *child;
279
+	struct device_node *np = dev_of_node(dev), *child;
156
280
 	struct sc27xx_led_priv *priv;
157
-	const char *str;
158
281
 	u32 base, count, reg;
159
282
 	int err;
160
283
 
161
-	count = of_get_child_count(np);
284
+	count = of_get_available_child_count(np);
162
285
 	if (!count || count > SC27XX_LEDS_MAX)
163
286
 		return -EINVAL;
164
287
 
..
..
@@ -182,7 +305,7 @@
182
305
 		return err;
183
306
 	}
184
307
 
185
-	for_each_child_of_node(np, child) {
308
+	for_each_available_child_of_node(np, child) {
186
309
 		err = of_property_read_u32(child, "reg", &reg);
187
310
 		if (err) {
188
311
 			of_node_put(child);
..
..
@@ -196,15 +319,8 @@
196
319
 			return -EINVAL;
197
320
 		}
198
321
 
322
+		priv->leds[reg].fwnode = of_fwnode_handle(child);
199
323
 		priv->leds[reg].active = true;
200
-
201
-		err = of_property_read_string(child, "label", &str);
202
-		if (err)
203
-			snprintf(priv->leds[reg].name, LED_MAX_NAME_SIZE,
204
-				 "sc27xx::");
205
-		else
206
-			snprintf(priv->leds[reg].name, LED_MAX_NAME_SIZE,
207
-				 "sc27xx:%s", str);
208
324
 	}
209
325
 
210
326
 	err = sc27xx_led_register(dev, priv);
..
..
@@ -241,4 +357,5 @@
241
357
 
242
358
 MODULE_DESCRIPTION("Spreadtrum SC27xx breathing light controller driver");
243
359
 MODULE_AUTHOR("Xiaotong Lu <xiaotong.lu@spreadtrum.com>");
360
+MODULE_AUTHOR("Baolin Wang <baolin.wang@linaro.org>");
244
361
 MODULE_LICENSE("GPL v2");