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Wed, 14 Feb 2024 10:34:18 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1raBej-004Xzc-39; Wed, 14 Feb 2024 10:34:17 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: linux-pwm@vger.kernel.org Cc: kernel@pengutronix.de, AngeloGioacchino Del Regno Subject: [PATCH v6 002/164] pwm: Provide wrappers for storing and getting driver private data Date: Wed, 14 Feb 2024 10:30:49 +0100 Message-ID: <67514cdf29d29bd8b4ad8d44fac87f6ae6dca1e5.1707900770.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pwm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2034; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=n/J5oDlPxXReTz+uCLIDIov5v8tmfWnZ3qghGaABPIg=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlzIhNuHK8L4hLivwDo3aT2U9LOc+OSPRE0NSKf 0O5VJ6ktUqJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZcyITQAKCRCPgPtYfRL+ TmD9B/9ELRx/esLQ6bnxuzi4QyNr6h2PaQU401+Q2OYIaIVjUoqtKfOj94e+7hLWue5cHd1/OSo Bn8Sl5nqrA+c6MdIHoT2EZZrzCNpC9mvGYIZyoxlPvn0usBdEBtGeGSPMWrL5tiecnLEBQhEtzp mby4+6pbZCzN/g7QhyU/eSMf+FrHcnFu3lHRu8SFBDTqxxCwD+y4J4srCZAnlwA3kZ4zdACby+/ m2mpJZ/Oum6nRTcCd0Rkh8VnkaaFAY1TAC1LaO6YKdrBSqu6nfLcy8oH3pRg8ziSB1yz+KwkVD6 bH7zFMSNxRlVbMirUc7x2YnMduvcbawvu0hZNxt24vxB6RPz X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-pwm@vger.kernel.org These functions are useful to store and query driver private data depending on the pwm_chip. After struct pwm_chip got its own struct device, this can make use of dev_get_drvdata() and dev_set_drvdata() on that device. These functions are required already now to convert drivers to pwmchip_alloc() which must happen before changing pwm_chip::dev. Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Uwe Kleine-König --- include/linux/pwm.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 07af6910bdce..29a7d9140f77 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -272,6 +272,7 @@ struct pwm_ops { * @npwm: number of PWMs controlled by this chip * @of_xlate: request a PWM device given a device tree PWM specifier * @atomic: can the driver's ->apply() be called in atomic context + * @driver_data: Private pointer for driver specific info * @pwms: array of PWM devices allocated by the framework */ struct pwm_chip { @@ -286,6 +287,7 @@ struct pwm_chip { bool atomic; /* only used internally by the PWM framework */ + void *driver_data; struct pwm_device *pwms; }; @@ -294,6 +296,24 @@ static inline struct device *pwmchip_parent(const struct pwm_chip *chip) return chip->dev; } +static inline void *pwmchip_get_drvdata(struct pwm_chip *chip) +{ + /* + * After pwm_chip got a dedicated struct device, this can be replaced by + * dev_get_drvdata(&chip->dev); + */ + return chip->driver_data; +} + +static inline void pwmchip_set_drvdata(struct pwm_chip *chip, void *data) +{ + /* + * After pwm_chip got a dedicated struct device, this can be replaced by + * dev_set_drvdata(&chip->dev, data); + */ + chip->driver_data = data; +} + #if IS_ENABLED(CONFIG_PWM) /* PWM user APIs */ int pwm_apply_might_sleep(struct pwm_device *pwm, const struct pwm_state *state);