From: Mohan Pallaka <mpallaka@codeaurora.org> To: dmitry.torokhov@gmail.com, linux@arm.linux.org.uk, rmk+kernel@arm.linux.org.uk Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-input@vger.kernel.org, linux-i2c@vger.kernel.org, rmk@dyn-67.arm.linux.org.uk, Mohan Pallaka <mpallaka@codeaurora.org> Subject: [PATCH 1/2] pwm: Add stubs for pwm operations Date: Wed, 18 May 2011 10:48:45 +0530 [thread overview] Message-ID: <1305695926-25855-2-git-send-email-mpallaka@codeaurora.org> (raw) In-Reply-To: <1305695926-25855-1-git-send-email-mpallaka@codeaurora.org> Chip drivers that support both pwm and non-pwm modes would encounter compilation errors if the platform doesn't have support for pwm, even though the chip is programmed to work in non-pwm mode. Add stubs for pwm functions to avoid compilation errors in these scenarios. Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org> --- include/linux/pwm.h | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 7c77575..f0bc51f 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -3,6 +3,7 @@ struct pwm_device; +#if defined(CONFIG_PWM) /* * pwm_request - request a PWM device */ @@ -28,4 +29,27 @@ int pwm_enable(struct pwm_device *pwm); */ void pwm_disable(struct pwm_device *pwm); +#else + +struct pwm_device *pwm_request(int pwm_id, const char *label) +{ + return NULL; +} + +void pwm_free(struct pwm_device *pwm) { } + +int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) +{ + return -EINVAL; +} + +int pwm_enable(struct pwm_device *pwm) +{ + return -EINVAL; +} + +void pwm_disable(struct pwm_device *pwm) { } + + +#endif /* CONFIG_PWM */ #endif /* __LINUX_PWM_H */ -- Sent by a consultant of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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From: mpallaka@codeaurora.org (Mohan Pallaka) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/2] pwm: Add stubs for pwm operations Date: Wed, 18 May 2011 10:48:45 +0530 [thread overview] Message-ID: <1305695926-25855-2-git-send-email-mpallaka@codeaurora.org> (raw) In-Reply-To: <1305695926-25855-1-git-send-email-mpallaka@codeaurora.org> Chip drivers that support both pwm and non-pwm modes would encounter compilation errors if the platform doesn't have support for pwm, even though the chip is programmed to work in non-pwm mode. Add stubs for pwm functions to avoid compilation errors in these scenarios. Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org> --- include/linux/pwm.h | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 7c77575..f0bc51f 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -3,6 +3,7 @@ struct pwm_device; +#if defined(CONFIG_PWM) /* * pwm_request - request a PWM device */ @@ -28,4 +29,27 @@ int pwm_enable(struct pwm_device *pwm); */ void pwm_disable(struct pwm_device *pwm); +#else + +struct pwm_device *pwm_request(int pwm_id, const char *label) +{ + return NULL; +} + +void pwm_free(struct pwm_device *pwm) { } + +int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) +{ + return -EINVAL; +} + +int pwm_enable(struct pwm_device *pwm) +{ + return -EINVAL; +} + +void pwm_disable(struct pwm_device *pwm) { } + + +#endif /* CONFIG_PWM */ #endif /* __LINUX_PWM_H */ -- Sent by a consultant of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-05-18 5:18 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-05-18 5:18 [PATCH 0/2] Support for isa1200 haptic chip Mohan Pallaka 2011-05-18 5:18 ` Mohan Pallaka 2011-05-18 5:18 ` Mohan Pallaka [this message] 2011-05-18 5:18 ` [PATCH 1/2] pwm: Add stubs for pwm operations Mohan Pallaka 2011-05-18 6:45 ` Dmitry Torokhov 2011-05-18 6:45 ` Dmitry Torokhov 2011-05-18 5:18 ` [PATCH 2/2] input: misc: Add support for isa1200 chip Mohan Pallaka 2011-05-18 5:18 ` Mohan Pallaka 2011-05-18 13:00 [PATCH 1/2] pwm: Add stubs for pwm operations Mohan Pallaka 2011-05-18 13:00 ` Mohan Pallaka 2011-05-18 13:00 ` Mohan Pallaka 2011-05-20 4:59 Mohan Pallaka 2011-05-20 4:59 ` Mohan Pallaka 2011-05-21 14:30 ` Mohan Pallaka 2011-05-21 14:30 ` Mohan Pallaka 2011-05-24 11:04 ` Mohan Pallaka 2011-05-24 11:04 ` Mohan Pallaka [not found] ` <4DDB90D9.1020902-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2011-05-26 11:31 ` Mohan Pallaka 2011-05-26 11:31 ` Mohan Pallaka 2011-05-26 11:31 ` Mohan Pallaka
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