Merge "msm: ipa: disable IPA clock gating from debugfs" (8994af23) · Commits · e / devices / android_kernel_sony_msm8994

drivers/platform/msm/ipa/ipa_debugfs.c

+57 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,7 @@ const char *ipa_hdr_proc_type_name[] = {
		static struct dentry *dent;
		static struct dentry *dfile_gen_reg;
		static struct dentry *dfile_ep_reg;
		static struct dentry *dfile_keep_awake;
		static struct dentry *dfile_ep_holb;
		static struct dentry *dfile_hdr;
		static struct dentry *dfile_proc_ctx;
		@@ -368,6 +369,50 @@ static ssize_t ipa_read_ep_reg(struct file file, char __user ubuf,
		return size;
		}

		static ssize_t ipa_write_keep_awake(struct file file, const char __user buf,
		size_t count, loff_t *ppos)
		{
		unsigned long missing;
		s8 option = 0;

		if (sizeof(dbg_buff) < count + 1)
		return -EFAULT;

		missing = copy_from_user(dbg_buff, buf, count);
		if (missing)
		return -EFAULT;

		dbg_buff[count] = '\0';
		if (kstrtos8(dbg_buff, 0, &option))
		return -EFAULT;

		if (option == 1)
		ipa_inc_client_enable_clks();
		else if (option == 0)
		ipa_dec_client_disable_clks();
		else
		return -EFAULT;

		return count;
		}

		static ssize_t ipa_read_keep_awake(struct file file, char __user ubuf,
		size_t count, loff_t *ppos)
		{
		int nbytes;

		ipa_active_clients_lock();
		if (ipa_ctx->ipa_active_clients.cnt)
		nbytes = scnprintf(dbg_buff, IPA_MAX_MSG_LEN,
		"IPA APPS power state is ON\n");
		else
		nbytes = scnprintf(dbg_buff, IPA_MAX_MSG_LEN,
		"IPA APPS power state is OFF\n");
		ipa_active_clients_unlock();

		return simple_read_from_buffer(ubuf, count, ppos, dbg_buff, nbytes);
		}

		static ssize_t ipa_read_hdr(struct file file, char __user ubuf, size_t count,
		loff_t *ppos)
		{
		@@ -1430,6 +1475,11 @@ const struct file_operations ipa_ep_reg_ops = {
		.write = ipa_write_ep_reg,
		};

		const struct file_operations ipa_keep_awake_ops = {
		.read = ipa_read_keep_awake,
		.write = ipa_write_keep_awake,
		};

		const struct file_operations ipa_ep_holb_ops = {
		.write = ipa_write_ep_holb,
		};
		@@ -1517,6 +1567,13 @@ void ipa_debugfs_init(void)
		goto fail;
		}

		dfile_keep_awake = debugfs_create_file("keep_awake", read_write_mode,
		dent, 0, &ipa_keep_awake_ops);
		if (!dfile_keep_awake \|\| IS_ERR(dfile_keep_awake)) {
		IPAERR("fail to create file for debug_fs dfile_keep_awake\n");
		goto fail;
		}

		dfile_ep_holb = debugfs_create_file("holb", write_only_mode, dent,
		0, &ipa_ep_holb_ops);
		if (!dfile_ep_holb \|\| IS_ERR(dfile_ep_holb)) {