修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/gpio/gpio-msic.c
..
..
@@ -1,32 +1,19 @@
1
+// SPDX-License-Identifier: GPL-2.0
1
2
 /*
2
3
  * Intel Medfield MSIC GPIO driver>
3
4
  * Copyright (c) 2011, Intel Corporation.
4
5
  *
5
6
  * Author: Mathias Nyman <mathias.nyman@linux.intel.com>
6
7
  * Based on intel_pmic_gpio.c
7
- *
8
- * This program is free software; you can redistribute it and/or modify it
9
- * under the terms and conditions of the GNU General Public License,
10
- * version 2, as published by the Free Software Foundation.
11
- *
12
- * This program is distributed in the hope it will be useful, but WITHOUT
13
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15
- * more details.
16
- *
17
- * You should have received a copy of the GNU General Public License along with
18
- * this program; if not, write to the Free Software Foundation, Inc.,
19
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
20
- *
21
8
  */
22
9
 
23
-#include <linux/kernel.h>
24
-#include <linux/slab.h>
25
-#include <linux/interrupt.h>
26
-#include <linux/init.h>
27
10
 #include <linux/gpio/driver.h>
28
-#include <linux/platform_device.h>
11
+#include <linux/init.h>
12
+#include <linux/interrupt.h>
13
+#include <linux/kernel.h>
29
14
 #include <linux/mfd/intel_msic.h>
15
+#include <linux/platform_device.h>
16
+#include <linux/slab.h>
30
17
 
31
18
 /* the offset for the mapping of global gpio pin to irq */
32
19
 #define MSIC_GPIO_IRQ_OFFSET	0x100
..
..
@@ -237,20 +224,17 @@
237
224
 	struct msic_gpio *mg = irq_data_get_irq_handler_data(data);
238
225
 	struct irq_chip *chip = irq_data_get_irq_chip(data);
239
226
 	struct intel_msic *msic = pdev_to_intel_msic(mg->pdev);
227
+	unsigned long pending;
240
228
 	int i;
241
229
 	int bitnr;
242
230
 	u8 pin;
243
-	unsigned long pending = 0;
244
231
 
245
232
 	for (i = 0; i < (mg->chip.ngpio / BITS_PER_BYTE); i++) {
246
233
 		intel_msic_irq_read(msic, INTEL_MSIC_GPIO0LVIRQ + i, &pin);
247
234
 		pending = pin;
248
235
 
249
-		if (pending) {
250
-			for_each_set_bit(bitnr, &pending, BITS_PER_BYTE)
251
-				generic_handle_irq(mg->irq_base +
252
-						   (i * BITS_PER_BYTE) + bitnr);
253
-		}
236
+		for_each_set_bit(bitnr, &pending, BITS_PER_BYTE)
237
+			generic_handle_irq(mg->irq_base + i * BITS_PER_BYTE + bitnr);
254
238
 	}
255
239
 	chip->irq_eoi(data);
256
240
 }