Merge tag 'msm-clock-for-3.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm into next/late

From David Brown:
MSM clock updates for 3.11.

Per Stephen Boyd's coverletter:

Resending to collect higher level maintainer acks per Olof's request.
The plan is to push this patchset through MSM to the arm-soc tree.

This patchset moves the existing MSM clock code and affected drivers
to the common clock framework. A prerequisite of moving to the common
clock framework is to use clk_prepare() and clk_enable() so the first
few patches migrate drivers to that call (clk_prepare() is a no-op on
MSM right now). It also removes some custom clock APIs that MSM
provides and finally moves the proc_comm clock code to the common
struct clk.

This patch series will be used as the foundation of the MSM 8660/8960
clock code that I plan to send out after this series.

* tag 'msm-clock-for-3.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm:
  ARM: msm: Migrate to common clock framework
  ARM: msm: Make proc_comm clock control into a platform driver
  ARM: msm: Prepare clk_get() users in mach-msm for clock-pcom driver
  ARM: msm: Remove clock-7x30.h include file
  ARM: msm: Remove custom clk_set_{max,min}_rate() API
  ARM: msm: Remove custom clk_set_flags() API
  msm: iommu: Use clk_set_rate() instead of clk_set_min_rate()
  msm: iommu: Convert to clk_prepare/unprepare
  msm_sdcc: Convert to clk_prepare/unprepare
  usb: otg: msm: Convert to clk_prepare/unprepare
  msm_serial: Use devm_clk_get() and properly return errors
  msm_serial: Convert to clk_prepare/unprepare

Acked-by: Chris Ball <cjb@laptop.org> # for msm_sdcc.c
Signed-off-by: Olof Johansson <olof@lixom.net>

24 files changed, 243 insertions, 659 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9fbdc10..45230de 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -623,8 +623,8 @@ config ARCH_MSM
 	bool "Qualcomm MSM"
 	select ARCH_REQUIRE_GPIOLIB
 	select CLKDEV_LOOKUP
+	select COMMON_CLK
 	select GENERIC_CLOCKEVENTS
-	select HAVE_CLK
 	help
 	  Support for Qualcomm MSM/QSD based systems.  This runs on the
 	  apps processor of the MSM/QSD and depends on a shared memory
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 17519fa..700d77b 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -1,16 +1,18 @@
 obj-y += io.o timer.o
 obj-y += clock.o
-obj-$(CONFIG_DEBUG_FS) += clock-debug.o
 
 obj-$(CONFIG_MSM_VIC) += irq-vic.o
 obj-$(CONFIG_MSM_IOMMU) += devices-iommu.o
 
-obj-$(CONFIG_ARCH_MSM7X00A) += dma.o irq.o
-obj-$(CONFIG_ARCH_MSM7X30) += dma.o
-obj-$(CONFIG_ARCH_QSD8X50) += dma.o sirc.o
+obj-$(CONFIG_ARCH_MSM7X00A) += irq.o
+obj-$(CONFIG_ARCH_QSD8X50) += sirc.o
 
 obj-$(CONFIG_MSM_PROC_COMM) += proc_comm.o clock-pcom.o vreg.o
 
+obj-$(CONFIG_ARCH_MSM7X00A) += dma.o
+obj-$(CONFIG_ARCH_MSM7X30) += dma.o
+obj-$(CONFIG_ARCH_QSD8X50) += dma.o
+
 obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o
 obj-$(CONFIG_MSM_SMD) += last_radio_log.o
 obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.o
diff --git a/arch/arm/mach-msm/board-halibut.c b/arch/arm/mach-msm/board-halibut.c
index 82eaf88..803651a 100644
--- a/arch/arm/mach-msm/board-halibut.c
+++ b/arch/arm/mach-msm/board-halibut.c
@@ -59,6 +59,7 @@ static struct platform_device smc91x_device = {
 };
 
 static struct platform_device *devices[] __initdata = {
+	&msm_clock_7x01a,
 	&msm_device_gpio_7201,
 	&msm_device_uart3,
 	&msm_device_smd,
@@ -91,7 +92,6 @@ static void __init halibut_fixup(struct tag *tags, char **cmdline,
 static void __init halibut_map_io(void)
 {
 	msm_map_common_io();
-	msm_clock_init(msm_clocks_7x01a, msm_num_clocks_7x01a);
 }
 
 static void __init halibut_init_late(void)
diff --git a/arch/arm/mach-msm/board-msm7x30.c b/arch/arm/mach-msm/board-msm7x30.c
index 520c141..db3d8c0 100644
--- a/arch/arm/mach-msm/board-msm7x30.c
+++ b/arch/arm/mach-msm/board-msm7x30.c
@@ -89,6 +89,7 @@ struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
 };
 
 static struct platform_device *devices[] __initdata = {
+	&msm_clock_7x30,
 	&msm_device_gpio_7x30,
 #if defined(CONFIG_SERIAL_MSM) || defined(CONFIG_MSM_SERIAL_DEBUGGER)
         &msm_device_uart2,
@@ -116,7 +117,6 @@ static void __init msm7x30_init(void)
 static void __init msm7x30_map_io(void)
 {
 	msm_map_msm7x30_io();
-	msm_clock_init(msm_clocks_7x30, msm_num_clocks_7x30);
 }
 
 static void __init msm7x30_init_late(void)
diff --git a/arch/arm/mach-msm/board-qsd8x50.c b/arch/arm/mach-msm/board-qsd8x50.c
index 38a532d..f14a73d 100644
--- a/arch/arm/mach-msm/board-qsd8x50.c
+++ b/arch/arm/mach-msm/board-qsd8x50.c
@@ -89,6 +89,7 @@ static struct msm_otg_platform_data msm_otg_pdata = {
 };
 
 static struct platform_device *devices[] __initdata = {
+	&msm_clock_8x50,
 	&msm_device_gpio_8x50,
 	&msm_device_uart3,
 	&msm_device_smd,
@@ -172,7 +173,6 @@ static void __init qsd8x50_init_mmc(void)
 static void __init qsd8x50_map_io(void)
 {
 	msm_map_qsd8x50_io();
-	msm_clock_init(msm_clocks_8x50, msm_num_clocks_8x50);
 }
 
 static void __init qsd8x50_init_irq(void)
diff --git a/arch/arm/mach-msm/board-trout-panel.c b/arch/arm/mach-msm/board-trout-panel.c
index f9a5db6..77b0a26 100644
--- a/arch/arm/mach-msm/board-trout-panel.c
+++ b/arch/arm/mach-msm/board-trout-panel.c
@@ -7,7 +7,6 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/leds.h>
-#include <linux/clk.h>
 #include <linux/err.h>
 
 #include <asm/io.h>
@@ -19,6 +18,7 @@
 
 #include "board-trout.h"
 #include "proc_comm.h"
+#include "clock-pcom.h"
 #include "devices.h"
 
 #define TROUT_DEFAULT_BACKLIGHT_BRIGHTNESS 255
@@ -170,7 +170,6 @@ static struct mddi_table mddi_toshiba_init_table[] = {
 #define INTMASK_VWAKEOUT (1U << 0)
 
 
-static struct clk *gp_clk;
 static int trout_new_backlight = 1;
 static struct vreg *vreg_mddi_1v5;
 static struct vreg *vreg_lcm_2v85;
@@ -273,18 +272,14 @@ int __init trout_init_panel(void)
 	} else {
 		uint32_t config = PCOM_GPIO_CFG(27, 1, GPIO_OUTPUT,
 						GPIO_NO_PULL, GPIO_8MA);
+		uint32_t id = P_GP_CLK;
+		uint32_t rate = 19200000;
+
 		msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &config, 0);
 
-		gp_clk = clk_get(NULL, "gp_clk");
-		if (IS_ERR(gp_clk)) {
-			printk(KERN_ERR "trout_init_panel: could not get gp"
-			       "clock\n");
-			gp_clk = NULL;
-		}
-		rc = clk_set_rate(gp_clk, 19200000);
-		if (rc)
-			printk(KERN_ERR "trout_init_panel: set clock rate "
-			       "failed\n");
+		msm_proc_comm(PCOM_CLKCTL_RPC_SET_RATE, &id, &rate);
+		if (id < 0)
+			pr_err("trout_init_panel: set clock rate failed\n");
 	}
 
 	rc = platform_device_register(&msm_device_mdp);
diff --git a/arch/arm/mach-msm/board-trout.c b/arch/arm/mach-msm/board-trout.c
index 80fe1c5..64a46eb 100644
--- a/arch/arm/mach-msm/board-trout.c
+++ b/arch/arm/mach-msm/board-trout.c
@@ -36,6 +36,7 @@
 extern int trout_init_mmc(unsigned int);
 
 static struct platform_device *devices[] __initdata = {
+	&msm_clock_7x01a,
 	&msm_device_gpio_7201,
 	&msm_device_uart3,
 	&msm_device_smd,
@@ -94,8 +95,6 @@ static void __init trout_map_io(void)
 	/* route UART3 to the "H2W" extended usb connector */
 	writeb(0x80, TROUT_CPLD_BASE + 0x00);
 #endif
-
-	msm_clock_init(msm_clocks_7x01a, msm_num_clocks_7x01a);
 }
 
 static void __init trout_init_late(void)
diff --git a/arch/arm/mach-msm/clock-7x30.h b/arch/arm/mach-msm/clock-7x30.h
deleted file mode 100644
index 1410445..0000000
--- a/arch/arm/mach-msm/clock-7x30.h
+++ /dev/null
@@ -1,155 +0,0 @@
-/* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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.
- */
-
-#ifndef __ARCH_ARM_MACH_MSM_CLOCK_7X30_H
-#define __ARCH_ARM_MACH_MSM_CLOCK_7X30_H
-
-enum {
-	L_7X30_NONE_CLK = -1,
-	L_7X30_ADM_CLK,
-	L_7X30_I2C_CLK,
-	L_7X30_I2C_2_CLK,
-	L_7X30_QUP_I2C_CLK,
-	L_7X30_UART1DM_CLK,
-	L_7X30_UART1DM_P_CLK,
-	L_7X30_UART2DM_CLK,
-	L_7X30_UART2DM_P_CLK,
-	L_7X30_EMDH_CLK,
-	L_7X30_EMDH_P_CLK,
-	L_7X30_PMDH_CLK,
-	L_7X30_PMDH_P_CLK,
-	L_7X30_GRP_2D_CLK,
-	L_7X30_GRP_2D_P_CLK,
-	L_7X30_GRP_3D_SRC_CLK,
-	L_7X30_GRP_3D_CLK,
-	L_7X30_GRP_3D_P_CLK,
-	L_7X30_IMEM_CLK,
-	L_7X30_SDC1_CLK,
-	L_7X30_SDC1_P_CLK,
-	L_7X30_SDC2_CLK,
-	L_7X30_SDC2_P_CLK,
-	L_7X30_SDC3_CLK,
-	L_7X30_SDC3_P_CLK,
-	L_7X30_SDC4_CLK,
-	L_7X30_SDC4_P_CLK,
-	L_7X30_MDP_CLK,
-	L_7X30_MDP_P_CLK,
-	L_7X30_MDP_LCDC_PCLK_CLK,
-	L_7X30_MDP_LCDC_PAD_PCLK_CLK,
-	L_7X30_MDP_VSYNC_CLK,
-	L_7X30_MI2S_CODEC_RX_M_CLK,
-	L_7X30_MI2S_CODEC_RX_S_CLK,
-	L_7X30_MI2S_CODEC_TX_M_CLK,
-	L_7X30_MI2S_CODEC_TX_S_CLK,
-	L_7X30_MI2S_M_CLK,
-	L_7X30_MI2S_S_CLK,
-	L_7X30_LPA_CODEC_CLK,
-	L_7X30_LPA_CORE_CLK,
-	L_7X30_LPA_P_CLK,
-	L_7X30_MIDI_CLK,
-	L_7X30_MDC_CLK,
-	L_7X30_ROTATOR_IMEM_CLK,
-	L_7X30_ROTATOR_P_CLK,
-	L_7X30_SDAC_M_CLK,
-	L_7X30_SDAC_CLK,
-	L_7X30_UART1_CLK,
-	L_7X30_UART2_CLK,
-	L_7X30_UART3_CLK,
-	L_7X30_TV_CLK,
-	L_7X30_TV_DAC_CLK,
-	L_7X30_TV_ENC_CLK,
-	L_7X30_HDMI_CLK,
-	L_7X30_TSIF_REF_CLK,
-	L_7X30_TSIF_P_CLK,
-	L_7X30_USB_HS_SRC_CLK,
-	L_7X30_USB_HS_CLK,
-	L_7X30_USB_HS_CORE_CLK,
-	L_7X30_USB_HS_P_CLK,
-	L_7X30_USB_HS2_CLK,
-	L_7X30_USB_HS2_CORE_CLK,
-	L_7X30_USB_HS2_P_CLK,
-	L_7X30_USB_HS3_CLK,
-	L_7X30_USB_HS3_CORE_CLK,
-	L_7X30_USB_HS3_P_CLK,
-	L_7X30_VFE_CLK,
-	L_7X30_VFE_P_CLK,
-	L_7X30_VFE_MDC_CLK,
-	L_7X30_VFE_CAMIF_CLK,
-	L_7X30_CAMIF_PAD_P_CLK,
-	L_7X30_CAM_M_CLK,
-	L_7X30_JPEG_CLK,
-	L_7X30_JPEG_P_CLK,
-	L_7X30_VPE_CLK,
-	L_7X30_MFC_CLK,
-	L_7X30_MFC_DIV2_CLK,
-	L_7X30_MFC_P_CLK,
-	L_7X30_SPI_CLK,
-	L_7X30_SPI_P_CLK,
-	L_7X30_CSI0_CLK,
-	L_7X30_CSI0_VFE_CLK,
-	L_7X30_CSI0_P_CLK,
-	L_7X30_CSI1_CLK,
-	L_7X30_CSI1_VFE_CLK,
-	L_7X30_CSI1_P_CLK,
-	L_7X30_GLBL_ROOT_CLK,
-
-	L_7X30_AXI_LI_VG_CLK,
-	L_7X30_AXI_LI_GRP_CLK,
-	L_7X30_AXI_LI_JPEG_CLK,
-	L_7X30_AXI_GRP_2D_CLK,
-	L_7X30_AXI_MFC_CLK,
-	L_7X30_AXI_VPE_CLK,
-	L_7X30_AXI_LI_VFE_CLK,
-	L_7X30_AXI_LI_APPS_CLK,
-	L_7X30_AXI_MDP_CLK,
-	L_7X30_AXI_IMEM_CLK,
-	L_7X30_AXI_LI_ADSP_A_CLK,
-	L_7X30_AXI_ROTATOR_CLK,
-
-	L_7X30_NR_CLKS
-};
-
-struct clk_ops;
-extern struct clk_ops clk_ops_7x30;
-
-struct clk_ops *clk_7x30_is_local(uint32_t id);
-int clk_7x30_init(void);
-
-void pll_enable(uint32_t pll);
-void pll_disable(uint32_t pll);
-
-extern int internal_pwr_rail_ctl_auto(unsigned rail_id, bool enable);
-
-#define CLK_7X30(clk_name, clk_id, clk_dev, clk_flags) {	\
-	.con_id = clk_name, \
-	.dev_id = clk_dev, \
-	.clk = &(struct clk){ \
-		.id = L_7X30_##clk_id, \
-		.remote_id = P_##clk_id, \
-		.flags = clk_flags, \
-		.dbg_name = #clk_id, \
-	}, \
-	}
-
-#define CLK_7X30S(clk_name, l_id, r_id, clk_dev, clk_flags) {	\
-	.con_id = clk_name, \
-	.dev_id = clk_dev, \
-	.clk = &(struct clk){ \
-		.id = L_7X30_##l_id, \
-		.remote_id = P_##r_id, \
-		.flags = clk_flags, \
-		.dbg_name = #l_id, \
-		.ops = &clk_ops_pcom, \
-	}, \
-	}
-
-#endif
diff --git a/arch/arm/mach-msm/clock-debug.c b/arch/arm/mach-msm/clock-debug.c
deleted file mode 100644
index b0fbdf1..0000000
--- a/arch/arm/mach-msm/clock-debug.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * 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/kernel.h>
-#include <linux/module.h>
-#include <linux/ctype.h>
-#include <linux/debugfs.h>
-#include <linux/clk.h>
-#include "clock.h"
-
-static int clock_debug_rate_set(void *data, u64 val)
-{
-	struct clk *clock = data;
-	int ret;
-
-	/* Only increases to max rate will succeed, but that's actually good
-	 * for debugging purposes so we don't check for error. */
-	if (clock->flags & CLK_MAX)
-		clk_set_max_rate(clock, val);
-	if (clock->flags & CLK_MIN)
-		ret = clk_set_min_rate(clock, val);
-	else
-		ret = clk_set_rate(clock, val);
-	if (ret != 0)
-		printk(KERN_ERR "clk_set%s_rate failed (%d)\n",
-			(clock->flags & CLK_MIN) ? "_min" : "", ret);
-	return ret;
-}
-
-static int clock_debug_rate_get(void *data, u64 *val)
-{
-	struct clk *clock = data;
-	*val = clk_get_rate(clock);
-	return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(clock_rate_fops, clock_debug_rate_get,
-			clock_debug_rate_set, "%llu\n");
-
-static int clock_debug_enable_set(void *data, u64 val)
-{
-	struct clk *clock = data;
-	int rc = 0;
-
-	if (val)
-		rc = clock->ops->enable(clock->id);
-	else
-		clock->ops->disable(clock->id);
-
-	return rc;
-}
-
-static int clock_debug_enable_get(void *data, u64 *val)
-{
-	struct clk *clock = data;
-
-	*val = clock->ops->is_enabled(clock->id);
-
-	return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(clock_enable_fops, clock_debug_enable_get,
-			clock_debug_enable_set, "%llu\n");
-
-static int clock_debug_local_get(void *data, u64 *val)
-{
-	struct clk *clock = data;
-
-	*val = clock->ops->is_local(clock->id);
-
-	return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(clock_local_fops, clock_debug_local_get,
-			NULL, "%llu\n");
-
-static struct dentry *debugfs_base;
-
-int __init clock_debug_init(void)
-{
-	debugfs_base = debugfs_create_dir("clk", NULL);
-	if (!debugfs_base)
-		return -ENOMEM;
-	return 0;
-}
-
-int __init clock_debug_add(struct clk *clock)
-{
-	char temp[50], *ptr;
-	struct dentry *clk_dir;
-
-	if (!debugfs_base)
-		return -ENOMEM;
-
-	strlcpy(temp, clock->dbg_name, ARRAY_SIZE(temp));
-	for (ptr = temp; *ptr; ptr++)
-		*ptr = tolower(*ptr);
-
-	clk_dir = debugfs_create_dir(temp, debugfs_base);
-	if (!clk_dir)
-		return -ENOMEM;
-
-	if (!debugfs_create_file("rate", S_IRUGO | S_IWUSR, clk_dir,
-				clock, &clock_rate_fops))
-		goto error;
-
-	if (!debugfs_create_file("enable", S_IRUGO | S_IWUSR, clk_dir,
-				clock, &clock_enable_fops))
-		goto error;
-
-	if (!debugfs_create_file("is_local", S_IRUGO, clk_dir, clock,
-				&clock_local_fops))
-		goto error;
-	return 0;
-error:
-	debugfs_remove_recursive(clk_dir);
-	return -ENOMEM;
-}
diff --git a/arch/arm/mach-msm/clock-pcom.c b/arch/arm/mach-msm/clock-pcom.c
index a52c970..9a80449 100644
--- a/arch/arm/mach-msm/clock-pcom.c
+++ b/arch/arm/mach-msm/clock-pcom.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2007-2012, The Linux Foundation. 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
@@ -13,20 +13,33 @@
  *
  */
 
+#include <linux/kernel.h>
 #include <linux/err.h>
-#include <linux/ctype.h>
-#include <linux/stddef.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+
 #include <mach/clk.h>
 
 #include "proc_comm.h"
 #include "clock.h"
 #include "clock-pcom.h"
 
-/*
- * glue for the proc_comm interface
- */
-static int pc_clk_enable(unsigned id)
+struct clk_pcom {
+	unsigned id;
+	unsigned long flags;
+	struct msm_clk msm_clk;
+};
+
+static inline struct clk_pcom *to_clk_pcom(struct clk_hw *hw)
 {
+	return container_of(to_msm_clk(hw), struct clk_pcom, msm_clk);
+}
+
+static int pc_clk_enable(struct clk_hw *hw)
+{
+	unsigned id = to_clk_pcom(hw)->id;
 	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_ENABLE, &id, NULL);
 	if (rc < 0)
 		return rc;
@@ -34,14 +47,16 @@ static int pc_clk_enable(unsigned id)
 		return (int)id < 0 ? -EINVAL : 0;
 }
 
-static void pc_clk_disable(unsigned id)
+static void pc_clk_disable(struct clk_hw *hw)
 {
+	unsigned id = to_clk_pcom(hw)->id;
 	msm_proc_comm(PCOM_CLKCTL_RPC_DISABLE, &id, NULL);
 }
 
-int pc_clk_reset(unsigned id, enum clk_reset_action action)
+static int pc_clk_reset(struct clk_hw *hw, enum clk_reset_action action)
 {
 	int rc;
+	unsigned id = to_clk_pcom(hw)->id;
 
 	if (action == CLK_RESET_ASSERT)
 		rc = msm_proc_comm(PCOM_CLKCTL_RPC_RESET_ASSERT, &id, NULL);
@@ -54,85 +69,109 @@ int pc_clk_reset(unsigned id, enum clk_reset_action action)
 		return (int)id < 0 ? -EINVAL : 0;
 }
 
-static int pc_clk_set_rate(unsigned id, unsigned rate)
+static int pc_clk_set_rate(struct clk_hw *hw, unsigned long new_rate,
+			   unsigned long p_rate)
 {
-	/* The rate _might_ be rounded off to the nearest KHz value by the
+	struct clk_pcom *p = to_clk_pcom(hw);
+	unsigned id = p->id, rate = new_rate;
+	int rc;
+
+	/*
+	 * 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;
-}
-
-static 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;
-}
-
-static 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;
+	if (p->flags & CLKFLAG_MIN)
+		rc = msm_proc_comm(PCOM_CLKCTL_RPC_MIN_RATE, &id, &rate);
 	else
-		return (int)id < 0 ? -EINVAL : 0;
-}
-
-static int pc_clk_set_flags(unsigned id, unsigned flags)
-{
-	int rc = msm_proc_comm(PCOM_CLKCTL_RPC_SET_FLAGS, &id, &flags);
+		rc = msm_proc_comm(PCOM_CLKCTL_RPC_SET_RATE, &id, &rate);
 	if (rc < 0)
 		return rc;
 	else
 		return (int)id < 0 ? -EINVAL : 0;
 }
 
-static unsigned pc_clk_get_rate(unsigned id)
+static unsigned long pc_clk_recalc_rate(struct clk_hw *hw, unsigned long p_rate)
 {
+	unsigned id = to_clk_pcom(hw)->id;
 	if (msm_proc_comm(PCOM_CLKCTL_RPC_RATE, &id, NULL))
 		return 0;
 	else
 		return id;
 }
 
-static unsigned pc_clk_is_enabled(unsigned id)
+static int pc_clk_is_enabled(struct clk_hw *hw)
 {
+	unsigned id = to_clk_pcom(hw)->id;
 	if (msm_proc_comm(PCOM_CLKCTL_RPC_ENABLED, &id, NULL))
 		return 0;
 	else
 		return id;
 }
 
-static long pc_clk_round_rate(unsigned id, unsigned rate)
+static long pc_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+			      unsigned long *p_rate)
 {
-
 	/* Not really supported; pc_clk_set_rate() does rounding on it's own. */
 	return rate;
 }
 
-static bool pc_clk_is_local(unsigned id)
-{
-	return false;
-}
-
-struct clk_ops clk_ops_pcom = {
+static 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,
+	.recalc_rate = pc_clk_recalc_rate,
 	.is_enabled = pc_clk_is_enabled,
 	.round_rate = pc_clk_round_rate,
-	.is_local = pc_clk_is_local,
 };
+
+static int msm_clock_pcom_probe(struct platform_device *pdev)
+{
+	const struct pcom_clk_pdata *pdata = pdev->dev.platform_data;
+	int i, ret;
+
+	for (i = 0; i < pdata->num_lookups; i++) {
+		const struct clk_pcom_desc *desc = &pdata->lookup[i];
+		struct clk *c;
+		struct clk_pcom *p;
+		struct clk_hw *hw;
+		struct clk_init_data init;
+
+		p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
+		if (!p)
+			return -ENOMEM;
+
+		p->id = desc->id;
+		p->flags = desc->flags;
+		p->msm_clk.reset = pc_clk_reset;
+
+		hw = &p->msm_clk.hw;
+		hw->init = &init;
+
+		init.name = desc->name;
+		init.ops = &clk_ops_pcom;
+		init.num_parents = 0;
+		init.flags = CLK_IS_ROOT;
+
+		if (!(p->flags & CLKFLAG_AUTO_OFF))
+			init.flags |= CLK_IGNORE_UNUSED;
+
+		c = devm_clk_register(&pdev->dev, hw);
+		ret = clk_register_clkdev(c, desc->con, desc->dev);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct platform_driver msm_clock_pcom_driver = {
+	.probe		= msm_clock_pcom_probe,
+	.driver		= {
+		.name	= "msm-clock-pcom",
+		.owner	= THIS_MODULE,
+	},
+};
+module_platform_driver(msm_clock_pcom_driver);
+
+MODULE_LICENSE("GPL v2");
diff --git a/arch/arm/mach-msm/clock-pcom.h b/arch/arm/mach-msm/clock-pcom.h
index 974d003..5bb164f 100644
--- a/arch/arm/mach-msm/clock-pcom.h
+++ b/arch/arm/mach-msm/clock-pcom.h
@@ -1,4 +1,5 @@
-/* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
+/*
+ * Copyright (c) 2009-2012, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -120,21 +121,25 @@
 
 #define P_NR_CLKS		102
 
-struct clk_ops;
-extern struct clk_ops clk_ops_pcom;
+struct clk_pcom_desc {
+	unsigned id;
+	const char *name;
+	const char *con;
+	const char *dev;
+	unsigned long flags;
+};
 
-int pc_clk_reset(unsigned id, enum clk_reset_action action);
+struct pcom_clk_pdata {
+	struct clk_pcom_desc *lookup;
+	u32 num_lookups;
+};
 
 #define CLK_PCOM(clk_name, clk_id, clk_dev, clk_flags) {	\
-	.con_id = clk_name, \
-	.dev_id = clk_dev, \
-	.clk = &(struct clk){ \
-		.id = P_##clk_id, \
-		.remote_id = P_##clk_id, \
-		.ops = &clk_ops_pcom, \
-		.flags = clk_flags, \
-		.dbg_name = #clk_id, \
-	}, \
+	.id = P_##clk_id,					\
+	.name = #clk_id,					\
+	.con = clk_name,					\
+	.dev = clk_dev,						\
+	.flags = clk_flags,					\
 	}
 
 #endif
diff --git a/arch/arm/mach-msm/clock.c b/arch/arm/mach-msm/clock.c
index d9145df..35ea02b5 100644
--- a/arch/arm/mach-msm/clock.c
+++ b/arch/arm/mach-msm/clock.c
@@ -1,7 +1,7 @@
 /* arch/arm/mach-msm/clock.c
  *
  * Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2007-2012, The Linux Foundation. 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
@@ -14,171 +14,15 @@
  *
  */
 
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/err.h>
-#include <linux/spinlock.h>
-#include <linux/pm_qos.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/string.h>
+#include <linux/clk-provider.h>
 #include <linux/module.h>
-#include <linux/clkdev.h>
 
 #include "clock.h"
 
-static DEFINE_MUTEX(clocks_mutex);
-static DEFINE_SPINLOCK(clocks_lock);
-static LIST_HEAD(clocks);
-
-/*
- * Standard clock functions defined in include/linux/clk.h
- */
-int clk_enable(struct clk *clk)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&clocks_lock, flags);
-	clk->count++;
-	if (clk->count == 1)
-		clk->ops->enable(clk->id);
-	spin_unlock_irqrestore(&clocks_lock, flags);
-	return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&clocks_lock, flags);
-	BUG_ON(clk->count == 0);
-	clk->count--;
-	if (clk->count == 0)
-		clk->ops->disable(clk->id);
-	spin_unlock_irqrestore(&clocks_lock, flags);
-}
-EXPORT_SYMBOL(clk_disable);
-
 int clk_reset(struct clk *clk, enum clk_reset_action action)
 {
-	return clk->ops->reset(clk->remote_id, action);
+	struct clk_hw *hw = __clk_get_hw(clk);
+	struct msm_clk *m = to_msm_clk(hw);
+	return m->reset(hw, action);
 }
 EXPORT_SYMBOL(clk_reset);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
-	return clk->ops->get_rate(clk->id);
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
-	int ret;
-	if (clk->flags & CLKFLAG_MAX) {
-		ret = clk->ops->set_max_rate(clk->id, rate);
-		if (ret)
-			return ret;
-	}
-	if (clk->flags & CLKFLAG_MIN) {
-		ret = clk->ops->set_min_rate(clk->id, rate);
-		if (ret)
-			return ret;
-	}
-
-	if (clk->flags & CLKFLAG_MAX || clk->flags & CLKFLAG_MIN)
-		return ret;
-
-	return clk->ops->set_rate(clk->id, rate);
-}
-EXPORT_SYMBOL(clk_set_rate);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
-	return clk->ops->round_rate(clk->id, rate);
-}
-EXPORT_SYMBOL(clk_round_rate);
-
-int clk_set_min_rate(struct clk *clk, unsigned long rate)
-{
-	return clk->ops->set_min_rate(clk->id, rate);
-}
-EXPORT_SYMBOL(clk_set_min_rate);
-
-int clk_set_max_rate(struct clk *clk, unsigned long rate)
-{
-	return clk->ops->set_max_rate(clk->id, rate);
-}
-EXPORT_SYMBOL(clk_set_max_rate);
-
-int clk_set_parent(struct clk *clk, struct clk *parent)
-{
-	return -ENOSYS;
-}
-EXPORT_SYMBOL(clk_set_parent);
-
-struct clk *clk_get_parent(struct clk *clk)
-{
-	return ERR_PTR(-ENOSYS);
-}
-EXPORT_SYMBOL(clk_get_parent);
-
-int clk_set_flags(struct clk *clk, unsigned long flags)
-{
-	if (clk == NULL || IS_ERR(clk))
-		return -EINVAL;
-	return clk->ops->set_flags(clk->id, flags);
-}
-EXPORT_SYMBOL(clk_set_flags);
-
-/* EBI1 is the only shared clock that several clients want to vote on as of
- * this commit. If this changes in the future, then it might be better to
- * make clk_min_rate handle the voting or make ebi1_clk_set_min_rate more
- * generic to support different clocks.
- */
-static struct clk *ebi1_clk;
-
-void __init msm_clock_init(struct clk_lookup *clock_tbl, unsigned num_clocks)
-{
-	unsigned n;
-
-	mutex_lock(&clocks_mutex);
-	for (n = 0; n < num_clocks; n++) {
-		clkdev_add(&clock_tbl[n]);
-		list_add_tail(&clock_tbl[n].clk->list, &clocks);
-	}
-	mutex_unlock(&clocks_mutex);
-
-	ebi1_clk = clk_get(NULL, "ebi1_clk");
-	BUG_ON(ebi1_clk == NULL);
-
-}
-
-/* The bootloader and/or AMSS may have left various clocks enabled.
- * Disable any clocks that belong to us (CLKFLAG_AUTO_OFF) but have
- * not been explicitly enabled by a clk_enable() call.
- */
-static int __init clock_late_init(void)
-{
-	unsigned long flags;
-	struct clk *clk;
-	unsigned count = 0;
-
-	clock_debug_init();
-	mutex_lock(&clocks_mutex);
-	list_for_each_entry(clk, &clocks, list) {
-		clock_debug_add(clk);
-		if (clk->flags & CLKFLAG_AUTO_OFF) {
-			spin_lock_irqsave(&clocks_lock, flags);
-			if (!clk->count) {
-				count++;
-				clk->ops->auto_off(clk->id);
-			}
-			spin_unlock_irqrestore(&clocks_lock, flags);
-		}
-	}
-	mutex_unlock(&clocks_mutex);
-	pr_info("clock_late_init() disabled %d unused clocks\n", count);
-	return 0;
-}
-
-late_initcall(clock_late_init);
-
diff --git a/arch/arm/mach-msm/clock.h b/arch/arm/mach-msm/clock.h
index 2c007f6..42d29dd 100644
--- a/arch/arm/mach-msm/clock.h
+++ b/arch/arm/mach-msm/clock.h
@@ -1,7 +1,7 @@
 /* arch/arm/mach-msm/clock.h
  *
  * Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2007-2012, The Linux Foundation. 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
@@ -17,56 +17,27 @@
 #ifndef __ARCH_ARM_MACH_MSM_CLOCK_H
 #define __ARCH_ARM_MACH_MSM_CLOCK_H
 
-#include <linux/init.h>
-#include <linux/list.h>
+#include <linux/clk-provider.h>
 #include <mach/clk.h>
 
-#define CLKFLAG_INVERT			0x00000001
-#define CLKFLAG_NOINVERT		0x00000002
-#define CLKFLAG_NONEST			0x00000004
-#define CLKFLAG_NORESET			0x00000008
-
 #define CLK_FIRST_AVAILABLE_FLAG	0x00000100
 #define CLKFLAG_AUTO_OFF		0x00000200
 #define CLKFLAG_MIN			0x00000400
 #define CLKFLAG_MAX			0x00000800
 
-struct clk_ops {
-	int (*enable)(unsigned id);
-	void (*disable)(unsigned id);
-	void (*auto_off)(unsigned id);
-	int (*reset)(unsigned id, enum clk_reset_action action);
-	int (*set_rate)(unsigned id, unsigned rate);
-	int (*set_min_rate)(unsigned id, unsigned rate);
-	int (*set_max_rate)(unsigned id, unsigned rate);
-	int (*set_flags)(unsigned id, unsigned flags);
-	unsigned (*get_rate)(unsigned id);
-	unsigned (*is_enabled)(unsigned id);
-	long (*round_rate)(unsigned id, unsigned rate);
-	bool (*is_local)(unsigned id);
-};
-
-struct clk {
-	uint32_t id;
-	uint32_t remote_id;
-	uint32_t count;
-	uint32_t flags;
-	struct clk_ops *ops;
-	const char *dbg_name;
-	struct list_head list;
-};
-
 #define OFF CLKFLAG_AUTO_OFF
 #define CLK_MIN CLKFLAG_MIN
 #define CLK_MAX CLKFLAG_MAX
 #define CLK_MINMAX (CLK_MIN | CLK_MAX)
 
-#ifdef CONFIG_DEBUG_FS
-int __init clock_debug_init(void);
-int __init clock_debug_add(struct clk *clock);
-#else
-static inline int __init clock_debug_init(void) { return 0; }
-static inline int __init clock_debug_add(struct clk *clock) { return 0; }
-#endif
+struct msm_clk {
+	int (*reset)(struct clk_hw *hw, enum clk_reset_action action);
+	struct clk_hw hw;
+};
+
+static inline struct msm_clk *to_msm_clk(struct clk_hw *hw)
+{
+	return container_of(hw, struct msm_clk, hw);
+}
 
 #endif
diff --git a/arch/arm/mach-msm/devices-msm7x00.c b/arch/arm/mach-msm/devices-msm7x00.c
index 1a0a230..6d50fb9 100644
--- a/arch/arm/mach-msm/devices-msm7x00.c
+++ b/arch/arm/mach-msm/devices-msm7x00.c
@@ -425,7 +425,7 @@ struct platform_device msm_device_mdp = {
 	.resource = resources_mdp,
 };
 
-struct clk_lookup msm_clocks_7x01a[] = {
+static struct clk_pcom_desc msm_clocks_7x01a[] = {
 	CLK_PCOM("adm_clk",	ADM_CLK,	NULL, 0),
 	CLK_PCOM("adsp_clk",	ADSP_CLK,	NULL, 0),
 	CLK_PCOM("ebi1_clk",	EBI1_CLK,	NULL, 0),
@@ -469,4 +469,12 @@ struct clk_lookup msm_clocks_7x01a[] = {
 	CLK_PCOM("vfe_mdc_clk",	VFE_MDC_CLK,	NULL, OFF),
 };
 
-unsigned msm_num_clocks_7x01a = ARRAY_SIZE(msm_clocks_7x01a);
+static struct pcom_clk_pdata msm_clock_7x01a_pdata = {
+	.lookup = msm_clocks_7x01a,
+	.num_lookups = ARRAY_SIZE(msm_clocks_7x01a),
+};
+
+struct platform_device msm_clock_7x01a = {
+	.name = "msm-clock-pcom",
+	.dev.platform_data = &msm_clock_7x01a_pdata,
+};
diff --git a/arch/arm/mach-msm/devices-msm7x30.c b/arch/arm/mach-msm/devices-msm7x30.c
index 12f482c..d4db75a 100644
--- a/arch/arm/mach-msm/devices-msm7x30.c
+++ b/arch/arm/mach-msm/devices-msm7x30.c
@@ -28,8 +28,8 @@
 
 #include <asm/mach/flash.h>
 
+#include "clock.h"
 #include "clock-pcom.h"
-#include "clock-7x30.h"
 
 #include <linux/platform_data/mmc-msm_sdcc.h>
 
@@ -161,7 +161,7 @@ struct platform_device msm_device_hsusb_host = {
 	},
 };
 
-struct clk_lookup msm_clocks_7x30[] = {
+static struct clk_pcom_desc msm_clocks_7x30[] = {
 	CLK_PCOM("adm_clk",	ADM_CLK,	NULL, 0),
 	CLK_PCOM("adsp_clk",	ADSP_CLK,	NULL, 0),
 	CLK_PCOM("cam_m_clk",	CAM_M_CLK,	NULL, 0),
@@ -177,7 +177,6 @@ struct clk_lookup msm_clocks_7x30[] = {
 	CLK_PCOM("grp_2d_pclk",	GRP_2D_P_CLK,	NULL, 0),
 	CLK_PCOM("grp_clk",	GRP_3D_CLK,	NULL, 0),
 	CLK_PCOM("grp_pclk",	GRP_3D_P_CLK,	NULL, 0),
-	CLK_7X30S("grp_src_clk", GRP_3D_SRC_CLK, GRP_3D_CLK,	NULL, 0),
 	CLK_PCOM("hdmi_clk",	HDMI_CLK,	NULL, 0),
 	CLK_PCOM("imem_clk",	IMEM_CLK,	NULL, OFF),
 	CLK_PCOM("jpeg_clk",	JPEG_CLK,	NULL, OFF),
@@ -210,7 +209,6 @@ struct clk_lookup msm_clocks_7x30[] = {
 	CLK_PCOM("sdac_clk",	SDAC_CLK,	NULL, OFF),
 	CLK_PCOM("spi_clk",	SPI_CLK,	NULL, 0),
 	CLK_PCOM("spi_pclk",	SPI_P_CLK,	NULL, 0),
-	CLK_7X30S("tv_src_clk",	TV_CLK, 	TV_ENC_CLK,	NULL, 0),
 	CLK_PCOM("tv_dac_clk",	TV_DAC_CLK,	NULL, 0),
 	CLK_PCOM("tv_enc_clk",	TV_ENC_CLK,	NULL, 0),
 	CLK_PCOM("uart_clk",	UART2_CLK,	"msm_serial.1", 0),
@@ -237,5 +235,12 @@ struct clk_lookup msm_clocks_7x30[] = {
 	CLK_PCOM("csi_vfe_clk",	CSI0_VFE_CLK,	NULL, 0),
 };
 
-unsigned msm_num_clocks_7x30 = ARRAY_SIZE(msm_clocks_7x30);
+static struct pcom_clk_pdata msm_clock_7x30_pdata = {
+	.lookup = msm_clocks_7x30,
+	.num_lookups = ARRAY_SIZE(msm_clocks_7x30),
+};
 
+struct platform_device msm_clock_7x30 = {
+	.name = "msm-clock-pcom",
+	.dev.platform_data = &msm_clock_7x30_pdata,
+};
diff --git a/arch/arm/mach-msm/devices-qsd8x50.c b/arch/arm/mach-msm/devices-qsd8x50.c
index 2e1b3ec..f551811 100644
--- a/arch/arm/mach-msm/devices-qsd8x50.c
+++ b/arch/arm/mach-msm/devices-qsd8x50.c
@@ -28,6 +28,7 @@
 #include <asm/mach/flash.h>
 
 #include <linux/platform_data/mmc-msm_sdcc.h>
+#include "clock.h"
 #include "clock-pcom.h"
 
 static struct resource msm_gpio_resources[] = {
@@ -322,7 +323,7 @@ int __init msm_add_sdcc(unsigned int controller,
 	return platform_device_register(pdev);
 }
 
-struct clk_lookup msm_clocks_8x50[] = {
+static struct clk_pcom_desc msm_clocks_8x50[] = {
 	CLK_PCOM("adm_clk",	ADM_CLK,	NULL, 0),
 	CLK_PCOM("ce_clk",	CE_CLK,		NULL, 0),
 	CLK_PCOM("ebi1_clk",	EBI1_CLK,	NULL, CLK_MIN),
@@ -376,5 +377,12 @@ struct clk_lookup msm_clocks_8x50[] = {
 	CLK_PCOM("usb_phy_clk",	USB_PHY_CLK,	NULL, 0),
 };
 
-unsigned msm_num_clocks_8x50 = ARRAY_SIZE(msm_clocks_8x50);
+static struct pcom_clk_pdata msm_clock_8x50_pdata = {
+	.lookup = msm_clocks_8x50,
+	.num_lookups = ARRAY_SIZE(msm_clocks_8x50),
+};
 
+struct platform_device msm_clock_8x50 = {
+	.name = "msm-clock-pcom",
+	.dev.platform_data = &msm_clock_8x50_pdata,
+};
diff --git a/arch/arm/mach-msm/devices.h b/arch/arm/mach-msm/devices.h
index da902cf..dccefad 100644
--- a/arch/arm/mach-msm/devices.h
+++ b/arch/arm/mach-msm/devices.h
@@ -16,10 +16,6 @@
 #ifndef __ARCH_ARM_MACH_MSM_DEVICES_H
 #define __ARCH_ARM_MACH_MSM_DEVICES_H
 
-#include <linux/clkdev.h>
-
-#include "clock.h"
-
 extern struct platform_device msm_device_gpio_7201;
 extern struct platform_device msm_device_gpio_7x30;
 extern struct platform_device msm_device_gpio_8x50;
@@ -50,13 +46,8 @@ extern struct platform_device msm_device_mddi0;
 extern struct platform_device msm_device_mddi1;
 extern struct platform_device msm_device_mdp;
 
-extern struct clk_lookup msm_clocks_7x01a[];
-extern unsigned msm_num_clocks_7x01a;
-
-extern struct clk_lookup msm_clocks_7x30[];
-extern unsigned msm_num_clocks_7x30;
-
-extern struct clk_lookup msm_clocks_8x50[];
-extern unsigned msm_num_clocks_8x50;
+extern struct platform_device msm_clock_7x01a;
+extern struct platform_device msm_clock_7x30;
+extern struct platform_device msm_clock_8x50;
 
 #endif
diff --git a/arch/arm/mach-msm/dma.c b/arch/arm/mach-msm/dma.c
index b279fd8..f8f6adf 100644
--- a/arch/arm/mach-msm/dma.c
+++ b/arch/arm/mach-msm/dma.c
@@ -284,6 +284,7 @@ static int __init msm_init_datamover(void)
 	clk = clk_get(NULL, "adm_clk");
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
+	clk_prepare(clk);
 	msm_dmov_clk = clk;
 	ret = request_irq(INT_ADM_AARM, msm_datamover_irq_handler, 0, "msmdatamover", NULL);
 	if (ret)
@@ -291,6 +292,4 @@ static int __init msm_init_datamover(void)
 	disable_irq(INT_ADM_AARM);
 	return 0;
 }
-
-arch_initcall(msm_init_datamover);
-
+module_init(msm_init_datamover);
diff --git a/arch/arm/mach-msm/include/mach/board.h b/arch/arm/mach-msm/include/mach/board.h
index 8cebedb..c34e246 100644
--- a/arch/arm/mach-msm/include/mach/board.h
+++ b/arch/arm/mach-msm/include/mach/board.h
@@ -20,16 +20,11 @@
 #include <linux/types.h>
 #include <linux/platform_data/mmc-msm_sdcc.h>
 
-/* platform device data structures */
-
-struct clk_lookup;
-
 /* common init routines for use by arch/arm/mach-msm/board-*.c */
 
 void __init msm_add_devices(void);
 void __init msm_init_irq(void);
 void __init msm_init_gpio(void);
-void __init msm_clock_init(struct clk_lookup *clock_tbl, unsigned num_clocks);
 int __init msm_add_sdcc(unsigned int controller,
 			struct msm_mmc_platform_data *plat,
 			unsigned int stat_irq, unsigned long stat_irq_flags);
diff --git a/arch/arm/mach-msm/include/mach/clk.h b/arch/arm/mach-msm/include/mach/clk.h
index e8d3842..fd4f4a7 100644
--- a/arch/arm/mach-msm/include/mach/clk.h
+++ b/arch/arm/mach-msm/include/mach/clk.h
@@ -25,16 +25,7 @@ enum clk_reset_action {
 
 struct clk;
 
-/* Rate is minimum clock rate in Hz */
-int clk_set_min_rate(struct clk *clk, unsigned long rate);
-
-/* Rate is maximum clock rate in Hz */
-int clk_set_max_rate(struct clk *clk, unsigned long rate);
-
 /* Assert/Deassert reset to a hardware block associated with a clock */
 int clk_reset(struct clk *clk, enum clk_reset_action action);
 
-/* Set clock-specific configuration parameters */
-int clk_set_flags(struct clk *clk, unsigned long flags);
-
 #endif
diff --git a/drivers/iommu/msm_iommu_dev.c b/drivers/iommu/msm_iommu_dev.c
index 8e8fb07..9144a6b 100644
--- a/drivers/iommu/msm_iommu_dev.c
+++ b/drivers/iommu/msm_iommu_dev.c
@@ -29,7 +29,6 @@
 
 #include <mach/iommu_hw-8xxx.h>
 #include <mach/iommu.h>
-#include <mach/clk.h>
 
 struct iommu_ctx_iter_data {
 	/* input */
@@ -160,7 +159,7 @@ static int msm_iommu_probe(struct platform_device *pdev)
 		goto fail;
 	}
 
-	ret = clk_enable(iommu_pclk);
+	ret = clk_prepare_enable(iommu_pclk);
 	if (ret)
 		goto fail_enable;
 
@@ -168,9 +167,9 @@ static int msm_iommu_probe(struct platform_device *pdev)
 
 	if (!IS_ERR(iommu_clk))	{
 		if (clk_get_rate(iommu_clk) == 0)
-			clk_set_min_rate(iommu_clk, 1);
+			clk_set_rate(iommu_clk, 1);
 
-		ret = clk_enable(iommu_clk);
+		ret = clk_prepare_enable(iommu_clk);
 		if (ret) {
 			clk_put(iommu_clk);
 			goto fail_pclk;
@@ -261,7 +260,7 @@ fail_clk:
 		clk_put(iommu_clk);
 	}
 fail_pclk:
-	clk_disable(iommu_pclk);
+	clk_disable_unprepare(iommu_pclk);
 fail_enable:
 	clk_put(iommu_pclk);
 fail:
@@ -275,8 +274,11 @@ static int msm_iommu_remove(struct platform_device *pdev)
 
 	drv = platform_get_drvdata(pdev);
 	if (drv) {
-		if (drv->clk)
+		if (drv->clk) {
+			clk_unprepare(drv->clk);
 			clk_put(drv->clk);
+		}
+		clk_unprepare(drv->pclk);
 		clk_put(drv->pclk);
 		memset(drv, 0, sizeof(*drv));
 		kfree(drv);
@@ -314,14 +316,14 @@ static int msm_iommu_ctx_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&ctx_drvdata->attached_elm);
 	platform_set_drvdata(pdev, ctx_drvdata);
 
-	ret = clk_enable(drvdata->pclk);
+	ret = clk_prepare_enable(drvdata->pclk);
 	if (ret)
 		goto fail;
 
 	if (drvdata->clk) {
-		ret = clk_enable(drvdata->clk);
+		ret = clk_prepare_enable(drvdata->clk);
 		if (ret) {
-			clk_disable(drvdata->pclk);
+			clk_disable_unprepare(drvdata->pclk);
 			goto fail;
 		}
 	}
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 0ee4a57..b900de4 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -1268,10 +1268,18 @@ msmsdcc_probe(struct platform_device *pdev)
 		goto clk_put;
 	}
 
+	ret = clk_prepare(host->pclk);
+	if (ret)
+		goto clk_put;
+
+	ret = clk_prepare(host->clk);
+	if (ret)
+		goto clk_unprepare_p;
+
 	/* Enable clocks */
 	ret = msmsdcc_enable_clocks(host);
 	if (ret)
-		goto clk_put;
+		goto clk_unprepare;
 
 	host->pclk_rate = clk_get_rate(host->pclk);
 	host->clk_rate = clk_get_rate(host->clk);
@@ -1386,6 +1394,10 @@ msmsdcc_probe(struct platform_device *pdev)
 		free_irq(host->stat_irq, host);
  clk_disable:
 	msmsdcc_disable_clocks(host, 0);
+ clk_unprepare:
+	clk_unprepare(host->clk);
+ clk_unprepare_p:
+	clk_unprepare(host->pclk);
  clk_put:
 	clk_put(host->clk);
  pclk_put:
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index b11e997..2c6cfb3 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -408,9 +408,9 @@ static void msm_init_clock(struct uart_port *port)
 {
 	struct msm_port *msm_port = UART_TO_MSM(port);
 
-	clk_enable(msm_port->clk);
+	clk_prepare_enable(msm_port->clk);
 	if (!IS_ERR(msm_port->pclk))
-		clk_enable(msm_port->pclk);
+		clk_prepare_enable(msm_port->pclk);
 	msm_serial_set_mnd_regs(port);
 }
 
@@ -486,7 +486,7 @@ static void msm_shutdown(struct uart_port *port)
 	msm_port->imr = 0;
 	msm_write(port, 0, UART_IMR); /* disable interrupts */
 
-	clk_disable(msm_port->clk);
+	clk_disable_unprepare(msm_port->clk);
 
 	free_irq(port->irq, port);
 }
@@ -688,14 +688,14 @@ static void msm_power(struct uart_port *port, unsigned int state,
 
 	switch (state) {
 	case 0:
-		clk_enable(msm_port->clk);
+		clk_prepare_enable(msm_port->clk);
 		if (!IS_ERR(msm_port->pclk))
-			clk_enable(msm_port->pclk);
+			clk_prepare_enable(msm_port->pclk);
 		break;
 	case 3:
-		clk_disable(msm_port->clk);
+		clk_disable_unprepare(msm_port->clk);
 		if (!IS_ERR(msm_port->pclk))
-			clk_disable(msm_port->pclk);
+			clk_disable_unprepare(msm_port->pclk);
 		break;
 	default:
 		printk(KERN_ERR "msm_serial: Unknown PM state %d\n", state);
@@ -884,19 +884,22 @@ static int __init msm_serial_probe(struct platform_device *pdev)
 		msm_port->is_uartdm = 0;
 
 	if (msm_port->is_uartdm) {
-		msm_port->clk = clk_get(&pdev->dev, "gsbi_uart_clk");
-		msm_port->pclk = clk_get(&pdev->dev, "gsbi_pclk");
+		msm_port->clk = devm_clk_get(&pdev->dev, "gsbi_uart_clk");
+		msm_port->pclk = devm_clk_get(&pdev->dev, "gsbi_pclk");
 	} else {
-		msm_port->clk = clk_get(&pdev->dev, "uart_clk");
+		msm_port->clk = devm_clk_get(&pdev->dev, "uart_clk");
 		msm_port->pclk = ERR_PTR(-ENOENT);
 	}
 
-	if (unlikely(IS_ERR(msm_port->clk) || (IS_ERR(msm_port->pclk) &&
-					       msm_port->is_uartdm)))
-			return PTR_ERR(msm_port->clk);
+	if (IS_ERR(msm_port->clk))
+		return PTR_ERR(msm_port->clk);
+
+	if (msm_port->is_uartdm) {
+		if (IS_ERR(msm_port->pclk))
+			return PTR_ERR(msm_port->pclk);
 
-	if (msm_port->is_uartdm)
 		clk_set_rate(msm_port->clk, 1843200);
+	}
 
 	port->uartclk = clk_get_rate(msm_port->clk);
 	printk(KERN_INFO "uartclk = %d\n", port->uartclk);
@@ -919,9 +922,9 @@ static int __init msm_serial_probe(struct platform_device *pdev)
 
 static int msm_serial_remove(struct platform_device *pdev)
 {
-	struct msm_port *msm_port = platform_get_drvdata(pdev);
+	struct uart_port *port = platform_get_drvdata(pdev);
 
-	clk_put(msm_port->clk);
+	uart_remove_one_port(&msm_uart_driver, port);
 
 	return 0;
 }
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
index 749fbf4..d08f334 100644
--- a/drivers/usb/phy/phy-msm-usb.c
+++ b/drivers/usb/phy/phy-msm-usb.c
@@ -514,13 +514,13 @@ static int msm_otg_suspend(struct msm_otg *motg)
 			motg->pdata->otg_control == OTG_PMIC_CONTROL)
 		writel(readl(USB_PHY_CTRL) | PHY_RETEN, USB_PHY_CTRL);
 
-	clk_disable(motg->pclk);
-	clk_disable(motg->clk);
+	clk_disable_unprepare(motg->pclk);
+	clk_disable_unprepare(motg->clk);
 	if (motg->core_clk)
-		clk_disable(motg->core_clk);
+		clk_disable_unprepare(motg->core_clk);
 
 	if (!IS_ERR(motg->pclk_src))
-		clk_disable(motg->pclk_src);
+		clk_disable_unprepare(motg->pclk_src);
 
 	if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
 			motg->pdata->otg_control == OTG_PMIC_CONTROL) {
@@ -552,12 +552,12 @@ static int msm_otg_resume(struct msm_otg *motg)
 		return 0;
 
 	if (!IS_ERR(motg->pclk_src))
-		clk_enable(motg->pclk_src);
+		clk_prepare_enable(motg->pclk_src);
 
-	clk_enable(motg->pclk);
-	clk_enable(motg->clk);
+	clk_prepare_enable(motg->pclk);
+	clk_prepare_enable(motg->clk);
 	if (motg->core_clk)
-		clk_enable(motg->core_clk);
+		clk_prepare_enable(motg->core_clk);
 
 	if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
 			motg->pdata->otg_control == OTG_PMIC_CONTROL) {
@@ -1468,7 +1468,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 		if (IS_ERR(motg->pclk_src))
 			goto put_clk;
 		clk_set_rate(motg->pclk_src, INT_MAX);
-		clk_enable(motg->pclk_src);
+		clk_prepare_enable(motg->pclk_src);
 	} else
 		motg->pclk_src = ERR_PTR(-ENOENT);
 
@@ -1511,8 +1511,8 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 		goto free_regs;
 	}
 
-	clk_enable(motg->clk);
-	clk_enable(motg->pclk);
+	clk_prepare_enable(motg->clk);
+	clk_prepare_enable(motg->pclk);
 
 	ret = msm_hsusb_init_vddcx(motg, 1);
 	if (ret) {
@@ -1532,7 +1532,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 	}
 
 	if (motg->core_clk)
-		clk_enable(motg->core_clk);
+		clk_prepare_enable(motg->core_clk);
 
 	writel(0, USB_USBINTR);
 	writel(0, USB_OTGSC);
@@ -1579,8 +1579,8 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 free_irq:
 	free_irq(motg->irq, motg);
 disable_clks:
-	clk_disable(motg->pclk);
-	clk_disable(motg->clk);
+	clk_disable_unprepare(motg->pclk);
+	clk_disable_unprepare(motg->clk);
 ldo_exit:
 	msm_hsusb_ldo_init(motg, 0);
 vddcx_exit:
@@ -1593,7 +1593,7 @@ put_core_clk:
 	clk_put(motg->pclk);
 put_pclk_src:
 	if (!IS_ERR(motg->pclk_src)) {
-		clk_disable(motg->pclk_src);
+		clk_disable_unprepare(motg->pclk_src);
 		clk_put(motg->pclk_src);
 	}
 put_clk:
@@ -1643,12 +1643,12 @@ static int msm_otg_remove(struct platform_device *pdev)
 	if (cnt >= PHY_SUSPEND_TIMEOUT_USEC)
 		dev_err(phy->dev, "Unable to suspend PHY\n");
 
-	clk_disable(motg->pclk);
-	clk_disable(motg->clk);
+	clk_disable_unprepare(motg->pclk);
+	clk_disable_unprepare(motg->clk);
 	if (motg->core_clk)
-		clk_disable(motg->core_clk);
+		clk_disable_unprepare(motg->core_clk);
 	if (!IS_ERR(motg->pclk_src)) {
-		clk_disable(motg->pclk_src);
+		clk_disable_unprepare(motg->pclk_src);
 		clk_put(motg->pclk_src);
 	}
 	msm_hsusb_ldo_init(motg, 0);