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* PWM: update enable status when using the internal APIJan Luebbe2017-01-101-0/+4
| | | | | | | | Without these, 'devinfo pwmX' will show enabled=0 even though the PWM was enabled (for example by a pwm-backlight). Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* string: Fix (v)asprintf prototypesSascha Hauer2016-04-153-4/+5
| | | | | | | | | | Our asprintf and vasprintf have different prototypes than the glibc functions. This causes trouble when we want to share barebox code with userspace code. Change the prototypes for (v)asprintf to match the glibc prototypes. Since the current (v)asprintf are convenient to use change the existing functions to b(v)asprintf. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* driver: replace dev_request_mem_region with dev_request_mem_resourceSascha Hauer2016-03-073-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_request_mem_region doesn't work properly one some SoCs on which PTR_ERR() values clash with valid return values from dev_request_mem_region. Replace them with dev_request_mem_resource where possible. This patch has been generated with the following semantic patch: // <smpl> @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { ... - return PTR_ERR(io); -} + return PTR_ERR(iores); +} +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) - return PTR_ERR(io); -} + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { - ret = PTR_ERR(io); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { + ret = PTR_ERR(iores); ... } +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ identifier func; @@ func(...) { <+... struct resource *iores; -struct resource *iores; ...+> } // </smpl> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: Add MXS PWM supportSascha Hauer2015-06-123-0/+181
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* PWM: Allow multiple PWMs per device nodeSascha Hauer2015-06-121-3/+4
| | | | | | | Matching a device node is enough since a device node may have multiple PWMs. Check for a id aswell. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* 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>
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 10:57:12 +0000