From 26ea22923e15869db4e7a1bddd7f85f23307cad5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?=
<nfraprado@collabora.com>
Date: Thu, 17 Jun 2021 12:08:00 -0300
Subject: [PATCH] HACK: Add spmi registers write through debugfs
Format is 'address,mask,value', all in hex. It uses the same file as the
read.
---
drivers/leds/flash/leds-qcom-spmi-flash.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/leds/flash/leds-qcom-spmi-flash.c b/drivers/leds/flash/leds-qcom-spmi-flash.c
index 385a3de7eddb2..5819c010a073f 100644
--- a/drivers/leds/flash/leds-qcom-spmi-flash.c
+++ b/drivers/leds/flash/leds-qcom-spmi-flash.c
@@ -271,9 +271,30 @@ ssize_t debugfs_spmi_regs_read(struct file *file, char __user *buf, size_t size,
return simple_read_from_buffer(buf, size, ppos, my_buf, total);
}
+ssize_t debugfs_spmi_regs_write(struct file *file, const char __user *buf,
+ size_t size, loff_t *ppos)
+{
+ const int SIZE = 20;
+ char my_buf[SIZE];
+ ssize_t len = simple_write_to_buffer(my_buf, PAGE_SIZE, ppos, buf, size);
+ unsigned int addr, mask, val;
+ int rc;
+
+ rc = sscanf(my_buf, "%x,%x,%x", &addr, &mask, &val);
+ if (rc < 3)
+ return -EINVAL;
+
+ mutex_lock(&debugfs_leds_dev->lock);
+ qcom_flash_masked_write(debugfs_leds_dev, addr, mask, val);
+ mutex_unlock(&debugfs_leds_dev->lock);
+
+ return len;
+}
+
static struct dentry *debugfs_dir;
const struct file_operations debugfs_spmi_regs_fops = {
.read = debugfs_spmi_regs_read,
+ .write = debugfs_spmi_regs_write,
};
static u8 qcom_flash_duration_to_reg(u32 us)
--
GitLab