ath10k: add chip_id file to debugfs

So that's it's possible to query chip id from ath10k anytime.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index fcb40ccdb33b4ced0c1d11f786c991df6b2ef496..09f535a1c76710237aff9eb5f12bff71e6f3ca8e 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -498,6 +498,25 @@ static const struct file_operations fops_simulate_fw_crash = {
        .llseek = default_llseek,
 };
 
+static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
+                                  size_t count, loff_t *ppos)
+{
+       struct ath10k *ar = file->private_data;
+       unsigned int len;
+       char buf[50];
+
+       len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_chip_id = {
+       .read = ath10k_read_chip_id,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
 int ath10k_debug_create(struct ath10k *ar)
 {
        ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
@@ -517,6 +536,9 @@ int ath10k_debug_create(struct ath10k *ar)
        debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
                            ar, &fops_simulate_fw_crash);
 
+       debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
+                           ar, &fops_chip_id);
+
        return 0;
 }
 #endif /* CONFIG_ATH10K_DEBUGFS */