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* of: use 'const void *' for struct of_device_id.dataAntony Pavlov2015-04-301-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 2011 barebox' of_device_id struct uses unsigned long type for data field: struct of_device_id { char *compatible; unsigned long data; }; Almost always struct of_device_id.data field are used as pointer and need 'unsigned long' casting. E.g. see 'git grep -A 4 of_device_id drivers/' output: drivers/ata/sata-imx.c:static __maybe_unused struct of_device_id imx_sata_dt_ids[] = { drivers/ata/sata-imx.c- { drivers/ata/sata-imx.c- .compatible = "fsl,imx6q-ahci", drivers/ata/sata-imx.c- .data = (unsigned long)&data_imx6, drivers/ata/sata-imx.c- }, { Here is of_device_id struct in linux kernel v4.0: struct of_device_id { char name[32]; char type[32]; char compatible[128]; const void *data; }; Changing of_device_id.data type to 'const void *data' will increase barebox' linux kernel compatibility and decrease number of 'unsigned long' casts. Part of the patch was done using the 'coccinelle' tool with the following semantic patch: @rule1@ identifier dev; identifier type; identifier func; @@ func(...) { <... - dev_get_drvdata(dev, (unsigned long *)&type) + dev_get_drvdata(dev, (const void **)&type) ...> } @rule2@ identifier dev; identifier type; identifier func; identifier data; @@ func(...) { <... - dev_get_drvdata(dev, (unsigned long *)&type->data) + dev_get_drvdata(dev, (const void **)&type->data) ...> } Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: i.MX: register successfully without aliasSascha Hauer2015-03-091-8/+6
| | | | | | | When a PWM does not have an of alias generate a name from the base address so that we can register it successfully. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* resource: Let dev_request_mem_region return an error pointerSascha Hauer2014-09-161-2/+3
| | | | | | For all users fix or add the error check. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: Implement devicetree supportSascha Hauer2014-02-281-7/+64
| | | | | | This implements of_pwm_request() for PWM client drivers. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: Add functions for getting/setting period/duty cycleSascha Hauer2014-02-281-0/+20
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: Add i.MX PWM driverSascha Hauer2014-02-143-1/+270
| | | | | | | The Kernel driver from Linux-3.13 with some adjustments for barebox. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: pxa: use pwmx as devnameSascha Hauer2014-02-141-1/+1
| | | | | | | As this changes the name of the pwm we also have to adjust it in pwm_request. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: Use a separate device for PWMsSascha Hauer2014-02-131-5/+15
| | | | | | | | Instead of directly using the hardware devicet for PWMs register a logical PWM device so that the user operates on pwmx devices rather than pxa-pwmx. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pwm: sanity check values before passing them to the driversSascha Hauer2013-09-271-0/+7
| | | | | | | | | Check for valid period size before calling ops->config. This fixes the pxa driver which otherwise does a division by zero. While at it, also check for duty_ns being smaller or equal to period_ns. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: Robert Jarzmik <robert.jarzmik@free.fr>
* pwm: Use dev_add_param_int for pwm parametersSascha Hauer2013-04-111-59/+30
| | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: Robert Jarzmik <robert.jarzmik@free.fr>
* switch all platform_bus device/driver registering to ↵Jean-Christophe PLAGNIOL-VILLARD2012-10-041-1/+1
| | | | | | | | platform_driver/device_register now register_driver and register_device are for bus only usage. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Treewide: remove address of the Free Software FoundationSascha Hauer2012-09-171-4/+0
| | | | | | | The FSF address has changed in the past. Instead of updating it each time the address changes, just drop it completely treewide. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pwm PXA: Compile only on PXASascha Hauer2012-07-251-0/+1
| | | | | | | The PXA PWM driver does not compile on any other architecture, so depend on PXA. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* drivers/pwm: add PXA pulse width modulator controllerRobert Jarzmik2012-02-173-0/+164
| | | | | | | | | Add PXA embedded pulse width modulator support. The PWM can generate signals from 49.6kHz to 1.625MHz. The driver is for pxa2xx family. The pxa3xx was not handled yet. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* drivers/pwm: add duty_ns and period_ns to core pwm chipRobert Jarzmik2012-02-171-1/+75
| | | | | | | | | | Add variables to control the duty_ns and period_ns of PWM chips. When these variables are set, a call to either pwm_enable() or pwm_config() is performed to enforce the setup values. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Add pwm core supportSascha Hauer2012-02-173-0/+176
This patch adds framework support for PWM (pulse width modulation) devices. A new pwm can be registered from a hardware driver using pwmchip_add(). It can then be requested from a client driver using pwm_request(). A string is used as a unique identifier for the pwms. It should usually be initialized by the hardware drivers using dev_name(dev). The client API is the same as currently in the Linux Kernel. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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