add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/auxdisplay/charlcd.c
..
..
@@ -20,9 +20,7 @@
20
20
 
21
21
 #include <generated/utsrelease.h>
22
22
 
23
-#include <misc/charlcd.h>
24
-
25
-#define LCD_MINOR		156
23
+#include "charlcd.h"
26
24
 
27
25
 #define DEFAULT_LCD_BWIDTH      40
28
26
 #define DEFAULT_LCD_HWIDTH      64
..
..
@@ -88,10 +86,10 @@
88
86
 		int len;
89
87
 	} esc_seq;
90
88
 
91
-	unsigned long long drvdata[0];
89
+	unsigned long long drvdata[];
92
90
 };
93
91
 
94
-#define to_priv(p)	container_of(p, struct charlcd_priv, lcd)
92
+#define charlcd_to_priv(p)	container_of(p, struct charlcd_priv, lcd)
95
93
 
96
94
 /* Device single-open policy control */
97
95
 static atomic_t charlcd_available = ATOMIC_INIT(1);
..
..
@@ -105,7 +103,7 @@
105
103
 /* turn the backlight on or off */
106
104
 static void charlcd_backlight(struct charlcd *lcd, int on)
107
105
 {
108
-	struct charlcd_priv *priv = to_priv(lcd);
106
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
109
107
 
110
108
 	if (!lcd->ops->backlight)
111
109
 		return;
..
..
@@ -134,7 +132,7 @@
134
132
 /* turn the backlight on for a little while */
135
133
 void charlcd_poke(struct charlcd *lcd)
136
134
 {
137
-	struct charlcd_priv *priv = to_priv(lcd);
135
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
138
136
 
139
137
 	if (!lcd->ops->backlight)
140
138
 		return;
..
..
@@ -152,7 +150,7 @@
152
150
 
153
151
 static void charlcd_gotoxy(struct charlcd *lcd)
154
152
 {
155
-	struct charlcd_priv *priv = to_priv(lcd);
153
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
156
154
 	unsigned int addr;
157
155
 
158
156
 	/*
..
..
@@ -170,7 +168,7 @@
170
168
 
171
169
 static void charlcd_home(struct charlcd *lcd)
172
170
 {
173
-	struct charlcd_priv *priv = to_priv(lcd);
171
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
174
172
 
175
173
 	priv->addr.x = 0;
176
174
 	priv->addr.y = 0;
..
..
@@ -179,7 +177,7 @@
179
177
 
180
178
 static void charlcd_print(struct charlcd *lcd, char c)
181
179
 {
182
-	struct charlcd_priv *priv = to_priv(lcd);
180
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
183
181
 
184
182
 	if (priv->addr.x < lcd->bwidth) {
185
183
 		if (lcd->char_conv)
..
..
@@ -211,7 +209,7 @@
211
209
 /* clears the display and resets X/Y */
212
210
 static void charlcd_clear_display(struct charlcd *lcd)
213
211
 {
214
-	struct charlcd_priv *priv = to_priv(lcd);
212
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
215
213
 
216
214
 	lcd->ops->write_cmd(lcd, LCD_CMD_DISPLAY_CLEAR);
217
215
 	priv->addr.x = 0;
..
..
@@ -223,7 +221,7 @@
223
221
 static int charlcd_init_display(struct charlcd *lcd)
224
222
 {
225
223
 	void (*write_cmd_raw)(struct charlcd *lcd, int cmd);
226
-	struct charlcd_priv *priv = to_priv(lcd);
224
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
227
225
 	u8 init;
228
226
 
229
227
 	if (lcd->ifwidth != 4 && lcd->ifwidth != 8)
..
..
@@ -288,31 +286,6 @@
288
286
 }
289
287
 
290
288
 /*
291
- * Parses an unsigned integer from a string, until a non-digit character
292
- * is found. The empty string is not accepted. No overflow checks are done.
293
- *
294
- * Returns whether the parsing was successful. Only in that case
295
- * the output parameters are written to.
296
- *
297
- * TODO: If the kernel adds an inplace version of kstrtoul(), this function
298
- * could be easily replaced by that.
299
- */
300
-static bool parse_n(const char *s, unsigned long *res, const char **next_s)
301
-{
302
-	if (!isdigit(*s))
303
-		return false;
304
-
305
-	*res = 0;
306
-	while (isdigit(*s)) {
307
-		*res = *res * 10 + (*s - '0');
308
-		++s;
309
-	}
310
-
311
-	*next_s = s;
312
-	return true;
313
-}
314
-
315
-/*
316
289
  * Parses a movement command of the form "(.*);", where the group can be
317
290
  * any number of subcommands of the form "(x|y)[0-9]+".
318
291
  *
..
..
@@ -336,6 +309,7 @@
336
309
 {
337
310
 	unsigned long new_x = *x;
338
311
 	unsigned long new_y = *y;
312
+	char *p;
339
313
 
340
314
 	for (;;) {
341
315
 		if (!*s)
..
..
@@ -345,11 +319,15 @@
345
319
 			break;
346
320
 
347
321
 		if (*s == 'x') {
348
-			if (!parse_n(s + 1, &new_x, &s))
322
+			new_x = simple_strtoul(s + 1, &p, 10);
323
+			if (p == s + 1)
349
324
 				return false;
325
+			s = p;
350
326
 		} else if (*s == 'y') {
351
-			if (!parse_n(s + 1, &new_y, &s))
327
+			new_y = simple_strtoul(s + 1, &p, 10);
328
+			if (p == s + 1)
352
329
 				return false;
330
+			s = p;
353
331
 		} else {
354
332
 			return false;
355
333
 		}
..
..
@@ -369,7 +347,7 @@
369
347
 
370
348
 static inline int handle_lcd_special_code(struct charlcd *lcd)
371
349
 {
372
-	struct charlcd_priv *priv = to_priv(lcd);
350
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
373
351
 
374
352
 	/* LCD special codes */
375
353
 
..
..
@@ -507,24 +485,19 @@
507
485
 		shift = 0;
508
486
 		value = 0;
509
487
 		while (*esc && cgoffset < 8) {
510
-			shift ^= 4;
511
-			if (*esc >= '0' && *esc <= '9') {
512
-				value |= (*esc - '0') << shift;
513
-			} else if (*esc >= 'A' && *esc <= 'F') {
514
-				value |= (*esc - 'A' + 10) << shift;
515
-			} else if (*esc >= 'a' && *esc <= 'f') {
516
-				value |= (*esc - 'a' + 10) << shift;
517
-			} else {
518
-				esc++;
519
-				continue;
520
-			}
488
+			int half;
521
489
 
490
+			shift ^= 4;
491
+
492
+			half = hex_to_bin(*esc++);
493
+			if (half < 0)
494
+				continue;
495
+
496
+			value |= half << shift;
522
497
 			if (shift == 0) {
523
498
 				cgbytes[cgoffset++] = value;
524
499
 				value = 0;
525
500
 			}
526
-
527
-			esc++;
528
501
 		}
529
502
 
530
503
 		lcd->ops->write_cmd(lcd, LCD_CMD_SET_CGRAM_ADDR | (cgaddr * 8));
..
..
@@ -580,7 +553,7 @@
580
553
 
581
554
 static void charlcd_write_char(struct charlcd *lcd, char c)
582
555
 {
583
-	struct charlcd_priv *priv = to_priv(lcd);
556
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
584
557
 
585
558
 	/* first, we'll test if we're in escape mode */
586
559
 	if ((c != '\n') && priv->esc_seq.len >= 0) {
..
..
@@ -705,7 +678,7 @@
705
678
 
706
679
 static int charlcd_open(struct inode *inode, struct file *file)
707
680
 {
708
-	struct charlcd_priv *priv = to_priv(the_charlcd);
681
+	struct charlcd_priv *priv = charlcd_to_priv(the_charlcd);
709
682
 	int ret;
710
683
 
711
684
 	ret = -EBUSY;
..
..
@@ -763,10 +736,24 @@
763
736
 	}
764
737
 }
765
738
 
739
+#ifdef CONFIG_PANEL_BOOT_MESSAGE
740
+#define LCD_INIT_TEXT CONFIG_PANEL_BOOT_MESSAGE
741
+#else
742
+#define LCD_INIT_TEXT "Linux-" UTS_RELEASE "\n"
743
+#endif
744
+
745
+#ifdef CONFIG_CHARLCD_BL_ON
746
+#define LCD_INIT_BL "\x1b[L+"
747
+#elif defined(CONFIG_CHARLCD_BL_FLASH)
748
+#define LCD_INIT_BL "\x1b[L*"
749
+#else
750
+#define LCD_INIT_BL "\x1b[L-"
751
+#endif
752
+
766
753
 /* initialize the LCD driver */
767
754
 static int charlcd_init(struct charlcd *lcd)
768
755
 {
769
-	struct charlcd_priv *priv = to_priv(lcd);
756
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
770
757
 	int ret;
771
758
 
772
759
 	if (lcd->ops->backlight) {
..
..
@@ -784,13 +771,8 @@
784
771
 		return ret;
785
772
 
786
773
 	/* display a short message */
787
-#ifdef CONFIG_PANEL_CHANGE_MESSAGE
788
-#ifdef CONFIG_PANEL_BOOT_MESSAGE
789
-	charlcd_puts(lcd, "\x1b[Lc\x1b[Lb\x1b[L*" CONFIG_PANEL_BOOT_MESSAGE);
790
-#endif
791
-#else
792
-	charlcd_puts(lcd, "\x1b[Lc\x1b[Lb\x1b[L*Linux-" UTS_RELEASE "\n");
793
-#endif
774
+	charlcd_puts(lcd, "\x1b[Lc\x1b[Lb" LCD_INIT_BL LCD_INIT_TEXT);
775
+
794
776
 	/* clear the display on the next device opening */
795
777
 	priv->must_clear = true;
796
778
 	charlcd_home(lcd);
..
..
@@ -817,6 +799,12 @@
817
799
 	return lcd;
818
800
 }
819
801
 EXPORT_SYMBOL_GPL(charlcd_alloc);
802
+
803
+void charlcd_free(struct charlcd *lcd)
804
+{
805
+	kfree(charlcd_to_priv(lcd));
806
+}
807
+EXPORT_SYMBOL_GPL(charlcd_free);
820
808
 
821
809
 static int panel_notify_sys(struct notifier_block *this, unsigned long code,
822
810
 			    void *unused)
..
..
@@ -866,7 +854,7 @@
866
854
 
867
855
 int charlcd_unregister(struct charlcd *lcd)
868
856
 {
869
-	struct charlcd_priv *priv = to_priv(lcd);
857
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
870
858
 
871
859
 	unregister_reboot_notifier(&panel_notifier);
872
860
 	charlcd_puts(lcd, "\x0cLCD driver unloaded.\x1b[Lc\x1b[Lb\x1b[L-");