1 files changed, 131 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/clock-pcom.c b/arch/arm/mach-msm/clock-pcom.c
new file mode 100644
index 00000000000..a3b45627eb4
--- /dev/null
+++ b/arch/arm/mach-msm/clock-pcom.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/ctype.h>
+#include <linux/stddef.h>
+#include <mach/clk.h>
+
+#include "proc_comm.h"
+#include "clock.h"
+
+/*
+ * glue for the proc_comm interface
+ */
+int pc_clk_enable(unsigned id)
+{
+	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_ENABLE, &id, NULL);
+	if (rc < 0)
+		return rc;
+	else
+		return (int)id < 0 ? -EINVAL : 0;
+}
+
+void pc_clk_disable(unsigned id)
+{
+	msm_proc_comm(PCOM_CLKCTL_RPC_DISABLE, &id, NULL);
+}
+
+int pc_clk_reset(unsigned id, enum clk_reset_action action)
+{
+	int rc;
+
+	if (action == CLK_RESET_ASSERT)
+		rc = msm_proc_comm(PCOM_CLKCTL_RPC_RESET_ASSERT, &id, NULL);
+	else
+		rc = msm_proc_comm(PCOM_CLKCTL_RPC_RESET_DEASSERT, &id, NULL);
+
+	if (rc < 0)
+		return rc;
+	else
+		return (int)id < 0 ? -EINVAL : 0;
+}
+
+int pc_clk_set_rate(unsigned id, unsigned rate)
+{
+	/* The rate _might_ be rounded off to the nearest KHz value by the
+	 * remote function. So a return value of 0 doesn't necessarily mean
+	 * that the exact rate was set successfully.
+	 */
+	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_SET_RATE, &id, &rate);
+	if (rc < 0)
+		return rc;
+	else
+		return (int)id < 0 ? -EINVAL : 0;
+}
+
+int pc_clk_set_min_rate(unsigned id, unsigned rate)
+{
+	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_MIN_RATE, &id, &rate);
+	if (rc < 0)
+		return rc;
+	else
+		return (int)id < 0 ? -EINVAL : 0;
+}
+
+int pc_clk_set_max_rate(unsigned id, unsigned rate)
+{
+	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_MAX_RATE, &id, &rate);
+	if (rc < 0)
+		return rc;
+	else
+		return (int)id < 0 ? -EINVAL : 0;
+}
+
+int pc_clk_set_flags(unsigned id, unsigned flags)
+{
+	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_SET_FLAGS, &id, &flags);
+	if (rc < 0)
+		return rc;
+	else
+		return (int)id < 0 ? -EINVAL : 0;
+}
+
+unsigned pc_clk_get_rate(unsigned id)
+{
+	if (msm_proc_comm(PCOM_CLKCTL_RPC_RATE, &id, NULL))
+		return 0;
+	else
+		return id;
+}
+
+unsigned pc_clk_is_enabled(unsigned id)
+{
+	if (msm_proc_comm(PCOM_CLKCTL_RPC_ENABLED, &id, NULL))
+		return 0;
+	else
+		return id;
+}
+
+long pc_clk_round_rate(unsigned id, unsigned rate)
+{
+
+	/* Not really supported; pc_clk_set_rate() does rounding on it's own. */
+	return rate;
+}
+
+struct clk_ops clk_ops_pcom = {
+	.enable = pc_clk_enable,
+	.disable = pc_clk_disable,
+	.auto_off = pc_clk_disable,
+	.reset = pc_clk_reset,
+	.set_rate = pc_clk_set_rate,
+	.set_min_rate = pc_clk_set_min_rate,
+	.set_max_rate = pc_clk_set_max_rate,
+	.set_flags = pc_clk_set_flags,
+	.get_rate = pc_clk_get_rate,
+	.is_enabled = pc_clk_is_enabled,
+	.round_rate = pc_clk_round_rate,
+};