| Message ID | 1325820343-11875-6-git-send-email-richard.zhao@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Fri, Jan 06, 2012 at 11:25:42AM +0800, Richard Zhao wrote: > +#ifdef CONFIG_OF > + > +static int audmux_v2_probe(struct platform_device *pdev) > +{ > + struct resource *res; > + int ret = 0; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + if (!res) > + return -ENODEV; > + if (!request_mem_region(res->start, resource_size(res), "audmux_v2")) { > + dev_err(&pdev->dev, "request_mem_region failed\n"); > + return -EBUSY; > + } > + > + audmux_base = ioremap(res->start, resource_size(res)); > + if (!audmux_base) { > + dev_err(&pdev->dev, "ioremap failed\n"); > + ret = -ENODEV; > + goto failed_ioremap; > + } > + > + audmux_clk = clk_get(NULL, "audmux"); NAK. You have a struct device. Use it.
On Fri, Jan 06, 2012 at 11:25:42AM +0800, Richard Zhao wrote: > If CONFIG_OF, we create a audmux device driver. > > For other platforms that don't set CONFIG_OF, it still initialize > everything in postcore_initcall. I didn't create device driver for > them, because it would be big change and one day the platforms will > convert to device tree too. > > Signed-off-by: Richard Zhao <richard.zhao@linaro.org> > --- > arch/arm/plat-mxc/audmux-v2.c | 59 +++++++++++++++++++++++++++++++++++++++++ > 1 files changed, 59 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c > index 8cced35..87e05e2 100644 > --- a/arch/arm/plat-mxc/audmux-v2.c > +++ b/arch/arm/plat-mxc/audmux-v2.c > @@ -20,7 +20,9 @@ > #include <linux/io.h> > #include <linux/clk.h> > #include <linux/debugfs.h> > +#include <linux/platform_device.h> > #include <linux/slab.h> > +#include <linux/of.h> > #include <mach/audmux.h> > #include <mach/hardware.h> > > @@ -184,8 +186,64 @@ int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr, > } > EXPORT_SYMBOL_GPL(mxc_audmux_v2_configure_port); > > +#ifdef CONFIG_OF > + > +static int audmux_v2_probe(struct platform_device *pdev) > +{ > + struct resource *res; > + int ret = 0; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + if (!res) > + return -ENODEV; > + if (!request_mem_region(res->start, resource_size(res), "audmux_v2")) { > + dev_err(&pdev->dev, "request_mem_region failed\n"); > + return -EBUSY; > + } > + > + audmux_base = ioremap(res->start, resource_size(res)); > + if (!audmux_base) { > + dev_err(&pdev->dev, "ioremap failed\n"); > + ret = -ENODEV; > + goto failed_ioremap; > + } > + > + audmux_clk = clk_get(NULL, "audmux"); > + if (IS_ERR(audmux_clk)) { > + dev_warn(&pdev->dev, "%s: cannot get clock: %d\n", > + __func__, ret); > + audmux_clk = NULL; > + } > + > + audmux_debugfs_init(); > + return 0; > + > +failed_ioremap: > + release_mem_region(res->start, resource_size(res)); > + > + return ret; > +} > + > +static const struct of_device_id audmux_v2_dt_ids[] = { > + { .compatible = "fsl,audmux-v2", }, > + { /* sentinel */ } > +}; > + > +static struct platform_driver audmux_v2_driver = { > + .probe = audmux_v2_probe, > + .driver = { > + .name = "audmux_v2", > + .of_match_table = audmux_v2_dt_ids, > + }, > +}; > + > +#endif > + > static int mxc_audmux_v2_init(void) > { > +#ifdef CONFIG_OF > + return platform_driver_register(&audmux_v2_driver); > +#else Don't do this. Just because CONFIG_OF is enabled does not mean that this kernel is only used for OF. This #else breaks starting the kernel the traditional machid way. Sascha
On Fri, Jan 06, 2012 at 08:56:17AM +0000, Russell King - ARM Linux wrote: > On Fri, Jan 06, 2012 at 11:25:42AM +0800, Richard Zhao wrote: > > +#ifdef CONFIG_OF > > + > > +static int audmux_v2_probe(struct platform_device *pdev) > > +{ > > + struct resource *res; > > + int ret = 0; > > + > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > > + if (!res) > > + return -ENODEV; > > + if (!request_mem_region(res->start, resource_size(res), "audmux_v2")) { > > + dev_err(&pdev->dev, "request_mem_region failed\n"); > > + return -EBUSY; > > + } > > + > > + audmux_base = ioremap(res->start, resource_size(res)); > > + if (!audmux_base) { > > + dev_err(&pdev->dev, "ioremap failed\n"); > > + ret = -ENODEV; > > + goto failed_ioremap; > > + } > > + > > + audmux_clk = clk_get(NULL, "audmux"); > > NAK. You have a struct device. Use it. Right, Thanks. Richard > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
On Fri, Jan 06, 2012 at 10:13:15AM +0100, Sascha Hauer wrote: > On Fri, Jan 06, 2012 at 11:25:42AM +0800, Richard Zhao wrote: > > If CONFIG_OF, we create a audmux device driver. > > > > For other platforms that don't set CONFIG_OF, it still initialize > > everything in postcore_initcall. I didn't create device driver for > > them, because it would be big change and one day the platforms will > > convert to device tree too. > > > > Signed-off-by: Richard Zhao <richard.zhao@linaro.org> > > --- > > arch/arm/plat-mxc/audmux-v2.c | 59 +++++++++++++++++++++++++++++++++++++++++ > > 1 files changed, 59 insertions(+), 0 deletions(-) > > > > diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c > > index 8cced35..87e05e2 100644 > > --- a/arch/arm/plat-mxc/audmux-v2.c > > +++ b/arch/arm/plat-mxc/audmux-v2.c > > @@ -20,7 +20,9 @@ > > #include <linux/io.h> > > #include <linux/clk.h> > > #include <linux/debugfs.h> > > +#include <linux/platform_device.h> > > #include <linux/slab.h> > > +#include <linux/of.h> > > #include <mach/audmux.h> > > #include <mach/hardware.h> > > > > @@ -184,8 +186,64 @@ int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr, > > } > > EXPORT_SYMBOL_GPL(mxc_audmux_v2_configure_port); > > > > +#ifdef CONFIG_OF > > + > > +static int audmux_v2_probe(struct platform_device *pdev) > > +{ > > + struct resource *res; > > + int ret = 0; > > + > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > > + if (!res) > > + return -ENODEV; > > + if (!request_mem_region(res->start, resource_size(res), "audmux_v2")) { > > + dev_err(&pdev->dev, "request_mem_region failed\n"); > > + return -EBUSY; > > + } > > + > > + audmux_base = ioremap(res->start, resource_size(res)); > > + if (!audmux_base) { > > + dev_err(&pdev->dev, "ioremap failed\n"); > > + ret = -ENODEV; > > + goto failed_ioremap; > > + } > > + > > + audmux_clk = clk_get(NULL, "audmux"); > > + if (IS_ERR(audmux_clk)) { > > + dev_warn(&pdev->dev, "%s: cannot get clock: %d\n", > > + __func__, ret); > > + audmux_clk = NULL; > > + } > > + > > + audmux_debugfs_init(); > > + return 0; > > + > > +failed_ioremap: > > + release_mem_region(res->start, resource_size(res)); > > + > > + return ret; > > +} > > + > > +static const struct of_device_id audmux_v2_dt_ids[] = { > > + { .compatible = "fsl,audmux-v2", }, > > + { /* sentinel */ } > > +}; > > + > > +static struct platform_driver audmux_v2_driver = { > > + .probe = audmux_v2_probe, > > + .driver = { > > + .name = "audmux_v2", > > + .of_match_table = audmux_v2_dt_ids, > > + }, > > +}; > > + > > +#endif > > + > > static int mxc_audmux_v2_init(void) > > { > > +#ifdef CONFIG_OF > > + return platform_driver_register(&audmux_v2_driver); > > +#else > > Don't do this. Just because CONFIG_OF is enabled does not mean that this > kernel is only used for OF. This #else breaks starting the kernel the > traditional machid way. You are right. Look like I have to convert audmux to platform devices for all platforms. Thanks Richard > > Sascha > > > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
On Fri, Jan 06, 2012 at 05:21:24PM +0800, Richard Zhao wrote: > On Fri, Jan 06, 2012 at 10:13:15AM +0100, Sascha Hauer wrote: > > On Fri, Jan 06, 2012 at 11:25:42AM +0800, Richard Zhao wrote: > > > If CONFIG_OF, we create a audmux device driver. > > > > > > For other platforms that don't set CONFIG_OF, it still initialize > > > everything in postcore_initcall. I didn't create device driver for > > > them, because it would be big change and one day the platforms will > > > convert to device tree too. > > > > > > Signed-off-by: Richard Zhao <richard.zhao@linaro.org> > > > --- > > > arch/arm/plat-mxc/audmux-v2.c | 59 +++++++++++++++++++++++++++++++++++++++++ > > > 1 files changed, 59 insertions(+), 0 deletions(-) > > > > > > diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c > > > index 8cced35..87e05e2 100644 > > > --- a/arch/arm/plat-mxc/audmux-v2.c > > > +++ b/arch/arm/plat-mxc/audmux-v2.c > > > @@ -20,7 +20,9 @@ > > > #include <linux/io.h> > > > #include <linux/clk.h> > > > #include <linux/debugfs.h> > > > +#include <linux/platform_device.h> > > > #include <linux/slab.h> > > > +#include <linux/of.h> > > > #include <mach/audmux.h> > > > #include <mach/hardware.h> > > > > > > @@ -184,8 +186,64 @@ int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr, > > > } > > > EXPORT_SYMBOL_GPL(mxc_audmux_v2_configure_port); > > > > > > +#ifdef CONFIG_OF > > > + > > > +static int audmux_v2_probe(struct platform_device *pdev) > > > +{ > > > + struct resource *res; > > > + int ret = 0; > > > + > > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > > > + if (!res) > > > + return -ENODEV; > > > + if (!request_mem_region(res->start, resource_size(res), "audmux_v2")) { > > > + dev_err(&pdev->dev, "request_mem_region failed\n"); > > > + return -EBUSY; > > > + } > > > + > > > + audmux_base = ioremap(res->start, resource_size(res)); > > > + if (!audmux_base) { > > > + dev_err(&pdev->dev, "ioremap failed\n"); > > > + ret = -ENODEV; > > > + goto failed_ioremap; > > > + } > > > + > > > + audmux_clk = clk_get(NULL, "audmux"); > > > + if (IS_ERR(audmux_clk)) { > > > + dev_warn(&pdev->dev, "%s: cannot get clock: %d\n", > > > + __func__, ret); > > > + audmux_clk = NULL; > > > + } > > > + > > > + audmux_debugfs_init(); > > > + return 0; > > > + > > > +failed_ioremap: > > > + release_mem_region(res->start, resource_size(res)); > > > + > > > + return ret; > > > +} > > > + > > > +static const struct of_device_id audmux_v2_dt_ids[] = { > > > + { .compatible = "fsl,audmux-v2", }, > > > + { /* sentinel */ } > > > +}; > > > + > > > +static struct platform_driver audmux_v2_driver = { > > > + .probe = audmux_v2_probe, > > > + .driver = { > > > + .name = "audmux_v2", > > > + .of_match_table = audmux_v2_dt_ids, > > > + }, > > > +}; > > > + > > > +#endif > > > + > > > static int mxc_audmux_v2_init(void) > > > { > > > +#ifdef CONFIG_OF > > > + return platform_driver_register(&audmux_v2_driver); > > > +#else > > > > Don't do this. Just because CONFIG_OF is enabled does not mean that this > > kernel is only used for OF. This #else breaks starting the kernel the > > traditional machid way. > You are right. Look like I have to convert audmux to platform devices > for all platforms. I hoped you would say this :) Sascha
On Fri, Jan 06, 2012 at 05:21:24PM +0800, Richard Zhao wrote: > You are right. Look like I have to convert audmux to platform devices > for all platforms. > With doing so, it may be also good for us to move this driver into sound/soc/imx/. Any particular reason to keep it in platform?
On Wed, Jan 11, 2012 at 01:26:06PM +0800, Shawn Guo wrote: > On Fri, Jan 06, 2012 at 05:21:24PM +0800, Richard Zhao wrote: > > You are right. Look like I have to convert audmux to platform devices > > for all platforms. > > > With doing so, it may be also good for us to move this driver into > sound/soc/imx/. Any particular reason to keep it in platform? Yes, we can move it out. But I'm not sure we can put it in asoc, because it's not a standard part of ASoC. Mark? Thanks Richard > > -- > Regards, > Shawn >
On Wed, Jan 11, 2012 at 09:02:44PM +0800, Richard Zhao wrote: > On Wed, Jan 11, 2012 at 01:26:06PM +0800, Shawn Guo wrote: > > With doing so, it may be also good for us to move this driver into > > sound/soc/imx/. Any particular reason to keep it in platform? > Yes, we can move it out. But I'm not sure we can put it in asoc, > because it's not a standard part of ASoC. Mark? It should be supported using standard ASoC mechanisms.
On Wed, Jan 11, 2012 at 05:38:27PM +0000, Mark Brown wrote: > On Wed, Jan 11, 2012 at 09:02:44PM +0800, Richard Zhao wrote: > > On Wed, Jan 11, 2012 at 01:26:06PM +0800, Shawn Guo wrote: > > > > With doing so, it may be also good for us to move this driver into > > > sound/soc/imx/. Any particular reason to keep it in platform? > > > Yes, we can move it out. But I'm not sure we can put it in asoc, > > because it's not a standard part of ASoC. Mark? > > It should be supported using standard ASoC mechanisms. Anyway, it needs another patch. I'll not do it in this patch series. Thanks Richard
diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c index 8cced35..87e05e2 100644 --- a/arch/arm/plat-mxc/audmux-v2.c +++ b/arch/arm/plat-mxc/audmux-v2.c @@ -20,7 +20,9 @@ #include <linux/io.h> #include <linux/clk.h> #include <linux/debugfs.h> +#include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/of.h> #include <mach/audmux.h> #include <mach/hardware.h> @@ -184,8 +186,64 @@ int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr, } EXPORT_SYMBOL_GPL(mxc_audmux_v2_configure_port); +#ifdef CONFIG_OF + +static int audmux_v2_probe(struct platform_device *pdev) +{ + struct resource *res; + int ret = 0; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENODEV; + if (!request_mem_region(res->start, resource_size(res), "audmux_v2")) { + dev_err(&pdev->dev, "request_mem_region failed\n"); + return -EBUSY; + } + + audmux_base = ioremap(res->start, resource_size(res)); + if (!audmux_base) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENODEV; + goto failed_ioremap; + } + + audmux_clk = clk_get(NULL, "audmux"); + if (IS_ERR(audmux_clk)) { + dev_warn(&pdev->dev, "%s: cannot get clock: %d\n", + __func__, ret); + audmux_clk = NULL; + } + + audmux_debugfs_init(); + return 0; + +failed_ioremap: + release_mem_region(res->start, resource_size(res)); + + return ret; +} + +static const struct of_device_id audmux_v2_dt_ids[] = { + { .compatible = "fsl,audmux-v2", }, + { /* sentinel */ } +}; + +static struct platform_driver audmux_v2_driver = { + .probe = audmux_v2_probe, + .driver = { + .name = "audmux_v2", + .of_match_table = audmux_v2_dt_ids, + }, +}; + +#endif + static int mxc_audmux_v2_init(void) { +#ifdef CONFIG_OF + return platform_driver_register(&audmux_v2_driver); +#else int ret; if (cpu_is_mx51()) { audmux_base = MX51_IO_ADDRESS(MX51_AUDMUX_BASE_ADDR); @@ -214,6 +272,7 @@ static int mxc_audmux_v2_init(void) audmux_debugfs_init(); return 0; +#endif } postcore_initcall(mxc_audmux_v2_init);
If CONFIG_OF, we create a audmux device driver. For other platforms that don't set CONFIG_OF, it still initialize everything in postcore_initcall. I didn't create device driver for them, because it would be big change and one day the platforms will convert to device tree too. Signed-off-by: Richard Zhao <richard.zhao@linaro.org> --- arch/arm/plat-mxc/audmux-v2.c | 59 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 59 insertions(+), 0 deletions(-)