Platform: OLPC: move debugfs support from x86 EC driver

There's nothing about the debugfs interface for the EC driver that is
architecture-specific, so move it into the arch-independent driver.

The code is mostly unchanged with the exception of renamed variables, coding
style changes, and API updates.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Paul Fox <pgf@laptop.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 97 deletions

diff --git a/arch/x86/platform/olpc/olpc.c b/arch/x86/platform/olpc/olpc.c
index 45900968fb8..ed41b437b37 100644
--- a/arch/x86/platform/olpc/olpc.c
+++ b/arch/x86/platform/olpc/olpc.c
@@ -19,7 +19,6 @@
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/syscore_ops.h>
-#include <linux/debugfs.h>
 #include <linux/mutex.h>
 #include <linux/olpc-ec.h>
 
@@ -31,15 +30,6 @@
 struct olpc_platform_t olpc_platform_info;
 EXPORT_SYMBOL_GPL(olpc_platform_info);
 
-/* debugfs interface to EC commands */
-#define EC_MAX_CMD_ARGS (5 + 1)	/* cmd byte + 5 args */
-#define EC_MAX_CMD_REPLY (8)
-
-static struct dentry *ec_debugfs_dir;
-static DEFINE_MUTEX(ec_debugfs_cmd_lock);
-static unsigned char ec_debugfs_resp[EC_MAX_CMD_REPLY];
-static unsigned int ec_debugfs_resp_bytes;
-
 /* EC event mask to be applied during suspend (defining wakeup sources). */
 static u16 ec_wakeup_mask;
 
@@ -273,91 +263,6 @@ int olpc_ec_sci_query(u16 *sci_value)
 }
 EXPORT_SYMBOL_GPL(olpc_ec_sci_query);
 
-static ssize_t ec_debugfs_cmd_write(struct file *file, const char __user *buf,
-				    size_t size, loff_t *ppos)
-{
-	int i, m;
-	unsigned char ec_cmd[EC_MAX_CMD_ARGS];
-	unsigned int ec_cmd_int[EC_MAX_CMD_ARGS];
-	char cmdbuf[64];
-	int ec_cmd_bytes;
-
-	mutex_lock(&ec_debugfs_cmd_lock);
-
-	size = simple_write_to_buffer(cmdbuf, sizeof(cmdbuf), ppos, buf, size);
-
-	m = sscanf(cmdbuf, "%x:%u %x %x %x %x %x", &ec_cmd_int[0],
-		   &ec_debugfs_resp_bytes,
-		   &ec_cmd_int[1], &ec_cmd_int[2], &ec_cmd_int[3],
-		   &ec_cmd_int[4], &ec_cmd_int[5]);
-	if (m < 2 || ec_debugfs_resp_bytes > EC_MAX_CMD_REPLY) {
-		/* reset to prevent overflow on read */
-		ec_debugfs_resp_bytes = 0;
-
-		printk(KERN_DEBUG "olpc-ec: bad ec cmd:  "
-		       "cmd:response-count [arg1 [arg2 ...]]\n");
-		size = -EINVAL;
-		goto out;
-	}
-
-	/* convert scanf'd ints to char */
-	ec_cmd_bytes = m - 2;
-	for (i = 0; i <= ec_cmd_bytes; i++)
-		ec_cmd[i] = ec_cmd_int[i];
-
-	printk(KERN_DEBUG "olpc-ec: debugfs cmd 0x%02x with %d args "
-	       "%02x %02x %02x %02x %02x, want %d returns\n",
-	       ec_cmd[0], ec_cmd_bytes, ec_cmd[1], ec_cmd[2], ec_cmd[3],
-	       ec_cmd[4], ec_cmd[5], ec_debugfs_resp_bytes);
-
-	olpc_ec_cmd(ec_cmd[0], (ec_cmd_bytes == 0) ? NULL : &ec_cmd[1],
-		    ec_cmd_bytes, ec_debugfs_resp, ec_debugfs_resp_bytes);
-
-	printk(KERN_DEBUG "olpc-ec: response "
-	       "%02x %02x %02x %02x %02x %02x %02x %02x (%d bytes expected)\n",
-	       ec_debugfs_resp[0], ec_debugfs_resp[1], ec_debugfs_resp[2],
-	       ec_debugfs_resp[3], ec_debugfs_resp[4], ec_debugfs_resp[5],
-	       ec_debugfs_resp[6], ec_debugfs_resp[7], ec_debugfs_resp_bytes);
-
-out:
-	mutex_unlock(&ec_debugfs_cmd_lock);
-	return size;
-}
-
-static ssize_t ec_debugfs_cmd_read(struct file *file, char __user *buf,
-				   size_t size, loff_t *ppos)
-{
-	unsigned int i, r;
-	char *rp;
-	char respbuf[64];
-
-	mutex_lock(&ec_debugfs_cmd_lock);
-	rp = respbuf;
-	rp += sprintf(rp, "%02x", ec_debugfs_resp[0]);
-	for (i = 1; i < ec_debugfs_resp_bytes; i++)
-		rp += sprintf(rp, ", %02x", ec_debugfs_resp[i]);
-	mutex_unlock(&ec_debugfs_cmd_lock);
-	rp += sprintf(rp, "\n");
-
-	r = rp - respbuf;
-	return simple_read_from_buffer(buf, size, ppos, respbuf, r);
-}
-
-static const struct file_operations ec_debugfs_genops = {
-	.write	 = ec_debugfs_cmd_write,
-	.read	 = ec_debugfs_cmd_read,
-};
-
-static void setup_debugfs(void)
-{
-	ec_debugfs_dir = debugfs_create_dir("olpc-ec", 0);
-	if (ec_debugfs_dir == ERR_PTR(-ENODEV))
-		return;
-
-	debugfs_create_file("cmd", 0600, ec_debugfs_dir, NULL,
-			    &ec_debugfs_genops);
-}
-
 static int olpc_ec_suspend(struct platform_device *pdev)
 {
 	return olpc_ec_mask_write(ec_wakeup_mask);
@@ -470,8 +375,6 @@ static int __init olpc_init(void)
 			return r;
 	}
 
-	setup_debugfs();
-
 	return 0;
 }