diff options
| author | Frank Li <Frank.Li@freescale.com> | 2011-02-22 17:34:58 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-01-09 19:53:48 +0800 |
| commit | f9a8a5549d5dbab830370f5aabce4549bb4847d0 (patch) | |
| tree | 7b40ec7604521609976c1bab0ff5704b14468025 /arch/arm/plat-mxc/clock.c | |
| parent | 23b9078bbe8f46b103fe831dcfb8858dbd587982 (diff) | |
ENGR00141217-3 MX53 MSL part upgrade to 2.6.38
imx51_babbage:
imx53_smd: add i2c device
imx53_smd: add i2c board device info
imx53_smd: add esdhc device support
imx53_smd: Add SRTC devices
imx53_smd: enable the AHCI SATA
imx53_smd: Add GPIO Keypad support
imx53_ard: enable ARD board bootup
imx53_ard: add ethernet pin mux
imx53_ard: add smsc911x device
imx53_loco: add i2c device
imx53_loco: change sii902x i2c device
imx53_loco: register v4l2 output device
imx53_loco: add srtc device
imx53_loco: enable the AHCI SATA
imx53_loco: Add GPIO Keypad support
imx53_evk: add evk and arm2 boards io setting and set up display
imx5: add ipu\vpu
imx5: clock.c: remove RATE_PROPAGATES
imx5: Add clock, dvfs, busfreq, sdram_autogating support.
imx5: fix warnings on boot
imx5: add v4l2 device
imx5: add board_is_rev support
imx5: Add sdma support for i.Mx53 and i.Mx51
imx5: add p1003
imx5: add ipuv3
imx5: add sata
imx5: add pmic board files
imx5: add pm function
imx5: add iram config
imx5: add gpu
imx5: fix clock debug enable_count error
imx53: add gpio irq support for mx53
imx53: change PWM backlight device register method to dynamic
imx53: change v4l2 device register method to dynamic
imx53: add vpu devices support
imx53: add dvfs-core and busfreq devices register method
imx53: Add usb devices
imx53: add i2c pad settings
imx53: add ssi support
Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Jason Chen <b02280@freescale.com>
Signed-off-by: Zeng Zhaoming <b32542@freescale.com>
Signed-off-by: Richard Zhu <r65037@freescale.com>
Signed-off-by: Zhou Jingyu <Jingyu.Zhou@freescale.com>
Signed-off-by: Zhang Yan <b34916@freescale.com>
Diffstat (limited to 'arch/arm/plat-mxc/clock.c')
| -rwxr-xr-x[-rw-r--r--] | arch/arm/plat-mxc/clock.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/arch/arm/plat-mxc/clock.c b/arch/arm/plat-mxc/clock.c index 2ed3ab173add..2c9bfa13db96 100644..100755 --- a/arch/arm/plat-mxc/clock.c +++ b/arch/arm/plat-mxc/clock.c @@ -4,7 +4,7 @@ * Copyright (C) 2004 - 2005 Nokia corporation * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> * Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com> - * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2007-2011 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2008 Juergen Beisert, kernel@pengutronix.de * * This program is free software; you can redistribute it and/or @@ -110,6 +110,25 @@ void clk_disable(struct clk *clk) } EXPORT_SYMBOL(clk_disable); +/*! + * @brief Function to get the usage count for the requested clock. + * + * This function returns the reference count for the clock. + * + * @param clk Handle to clock to disable. + * + * @return Returns the usage count for the requested clock. + */ +int clk_get_usecount(struct clk *clk) +{ + if (clk == NULL || IS_ERR(clk)) + return 0; + + return clk->usecount; +} + +EXPORT_SYMBOL(clk_get_usecount); + /* Retrieve the *current* clock rate. If the clock itself * does not provide a special calculation routine, ask * its parent and so on, until one is able to return |