diff options
| author | Cooper Jr., Franklin <fcooper@ti.com> | 2016-03-07 13:33:56 -0600 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2016-07-11 12:07:18 +0200 |
| commit | cc37655e6bbf83ded1e4d1d7ffd977786a845a67 (patch) | |
| tree | 2edeb564a96d7694122764fa745546a4519465af /drivers/pwm/pwm-tipwmss.h | |
| parent | ae5200d2271691b28aff8d0409fbefd4644ff507 (diff) | |
| download | lwn-cc37655e6bbf83ded1e4d1d7ffd977786a845a67.tar.gz lwn-cc37655e6bbf83ded1e4d1d7ffd977786a845a67.zip | |
pwm: pwm-ti*: Remove support for local clock gating
The PWMSS local clock gating registers have no real purpose on OMAP ARM
devices. These registers were left over registers from DSP IP where the
PRCM doesn't exist. There is a silicon bug where gating and ungating clocks
don't function properly. TRMs will be update to indicate that these
registers shouldn't be touched.
Therefore, all code that accesses the PWMSS_CLKCONFIG or PWMSS_CLKSTATUS
will be removed by this patch with zero loss of functionality by the ECAP
and EPWM drivers.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-tipwmss.h')
| -rw-r--r-- | drivers/pwm/pwm-tipwmss.h | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/drivers/pwm/pwm-tipwmss.h b/drivers/pwm/pwm-tipwmss.h deleted file mode 100644 index 10ad8040408b..000000000000 --- a/drivers/pwm/pwm-tipwmss.h +++ /dev/null @@ -1,39 +0,0 @@ -/* - * TI PWM Subsystem driver - * - * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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 __TIPWMSS_H -#define __TIPWMSS_H - -/* PWM substem clock gating */ -#define PWMSS_ECAPCLK_EN BIT(0) -#define PWMSS_ECAPCLK_STOP_REQ BIT(1) -#define PWMSS_EPWMCLK_EN BIT(8) -#define PWMSS_EPWMCLK_STOP_REQ BIT(9) - -#define PWMSS_ECAPCLK_EN_ACK BIT(0) -#define PWMSS_EPWMCLK_EN_ACK BIT(8) - -#ifdef CONFIG_PWM_TIPWMSS -extern u16 pwmss_submodule_state_change(struct device *dev, int set); -#else -static inline u16 pwmss_submodule_state_change(struct device *dev, int set) -{ - /* return success status value */ - return 0xFFFF; -} -#endif -#endif /* __TIPWMSS_H */ |