From: Lee Jones <lee.jones@linaro.org> To: Quentin Schulz <quentin.schulz@free-electrons.com> Cc: jdelvare@suse.com, linux@roeck-us.net, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, maxime.ripard@free-electrons.com, wens@csie.org, thomas.petazzoni@free-electrons.com, antoine.tenart@free-electrons.com, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v5 2/3] mfd: add support for Allwinner SoCs ADC Date: Mon, 12 Sep 2016 10:59:23 +0100 [thread overview] Message-ID: <20160912095923.GD1873@dell> (raw) In-Reply-To: <93bd339b-85ab-d0fc-5e80-e2aca290c0d7@free-electrons.com> On Mon, 12 Sep 2016, Quentin Schulz wrote: > On 12/09/2016 11:18, Lee Jones wrote: > > On Thu, 08 Sep 2016, Quentin Schulz wrote: > > > [...] [...] > >> +++ b/drivers/mfd/sun4i-gpadc-mfd.c [...] > >> +static struct mfd_cell sun4i_gpadc_mfd_cells[] = { > >> + { > >> + .name = "sun4i-a10-gpadc-iio", > >> + .resources = adc_resources, > >> + .num_resources = ARRAY_SIZE(adc_resources), > >> + }, { > >> + .name = "iio_hwmon", > >> + } > > > > Single line please > > > > { .name = "iio_hwmon" } > > > > + { > + .name = "sun4i-a10-gpadc-iio", > + .resources = adc_resources, > + .num_resources = ARRAY_SIZE(adc_resources), > + }, { .name = "iio_hwmon" } > > or > > + { > + .name = "sun4i-a10-gpadc-iio", > + .resources = adc_resources, > + .num_resources = ARRAY_SIZE(adc_resources), > + }, > + { .name = "iio_hwmon" } > > ? The latter. [...] > >> +static const struct of_device_id sun4i_gpadc_mfd_of_match[] = { > >> + { > >> + .compatible = "allwinner,sun4i-a10-ts", > >> + .data = &sun4i_gpadc_mfd_cells, > >> + }, { > >> + .compatible = "allwinner,sun5i-a13-ts", > >> + .data = &sun5i_gpadc_mfd_cells, > >> + }, { > >> + .compatible = "allwinner,sun6i-a31-ts", > >> + .data = &sun6i_gpadc_mfd_cells, > >> + }, { /* sentinel */ } > >> +}; > > > > Don't mix OF and MFD functionality. > > > > Why don't you create a node for "iio_hwmon" and have > > platform_of_populate() do your bidding? > > > > We are using a stable binding which we cannot modify. This means, the DT > in its current state can only be modified to add features, which is not > the case of this driver (it is a rewriting of an existing driver which > uses the rtp node). Then use .data = <defined model ID> and set up a switch() in .probe(). > >> +static int sun4i_gpadc_mfd_probe(struct platform_device *pdev) > > > > Remove all mention of "mfd" from this file. > > > > (Accept the calls to the MFD API of course). > > > [...] > >> + > >> +MODULE_DEVICE_TABLE(of, sun4i_gpadc_mfd_of_match); > > > > Place this directly under the table. > > > >> +static struct platform_driver sun4i_gpadc_mfd_driver = { > >> + .driver = { > >> + .name = "sun4i-adc-mfd", > >> + .of_match_table = of_match_ptr(sun4i_gpadc_mfd_of_match), > >> + }, > >> + .probe = sun4i_gpadc_mfd_probe, > > > > No .remove? > > > > No, everything in probe is handled with devm functions. Don't you need to undo the register write you did? -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
WARNING: multiple messages have this Message-ID (diff)
From: lee.jones@linaro.org (Lee Jones) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 2/3] mfd: add support for Allwinner SoCs ADC Date: Mon, 12 Sep 2016 10:59:23 +0100 [thread overview] Message-ID: <20160912095923.GD1873@dell> (raw) In-Reply-To: <93bd339b-85ab-d0fc-5e80-e2aca290c0d7@free-electrons.com> On Mon, 12 Sep 2016, Quentin Schulz wrote: > On 12/09/2016 11:18, Lee Jones wrote: > > On Thu, 08 Sep 2016, Quentin Schulz wrote: > > > [...] [...] > >> +++ b/drivers/mfd/sun4i-gpadc-mfd.c [...] > >> +static struct mfd_cell sun4i_gpadc_mfd_cells[] = { > >> + { > >> + .name = "sun4i-a10-gpadc-iio", > >> + .resources = adc_resources, > >> + .num_resources = ARRAY_SIZE(adc_resources), > >> + }, { > >> + .name = "iio_hwmon", > >> + } > > > > Single line please > > > > { .name = "iio_hwmon" } > > > > + { > + .name = "sun4i-a10-gpadc-iio", > + .resources = adc_resources, > + .num_resources = ARRAY_SIZE(adc_resources), > + }, { .name = "iio_hwmon" } > > or > > + { > + .name = "sun4i-a10-gpadc-iio", > + .resources = adc_resources, > + .num_resources = ARRAY_SIZE(adc_resources), > + }, > + { .name = "iio_hwmon" } > > ? The latter. [...] > >> +static const struct of_device_id sun4i_gpadc_mfd_of_match[] = { > >> + { > >> + .compatible = "allwinner,sun4i-a10-ts", > >> + .data = &sun4i_gpadc_mfd_cells, > >> + }, { > >> + .compatible = "allwinner,sun5i-a13-ts", > >> + .data = &sun5i_gpadc_mfd_cells, > >> + }, { > >> + .compatible = "allwinner,sun6i-a31-ts", > >> + .data = &sun6i_gpadc_mfd_cells, > >> + }, { /* sentinel */ } > >> +}; > > > > Don't mix OF and MFD functionality. > > > > Why don't you create a node for "iio_hwmon" and have > > platform_of_populate() do your bidding? > > > > We are using a stable binding which we cannot modify. This means, the DT > in its current state can only be modified to add features, which is not > the case of this driver (it is a rewriting of an existing driver which > uses the rtp node). Then use .data = <defined model ID> and set up a switch() in .probe(). > >> +static int sun4i_gpadc_mfd_probe(struct platform_device *pdev) > > > > Remove all mention of "mfd" from this file. > > > > (Accept the calls to the MFD API of course). > > > [...] > >> + > >> +MODULE_DEVICE_TABLE(of, sun4i_gpadc_mfd_of_match); > > > > Place this directly under the table. > > > >> +static struct platform_driver sun4i_gpadc_mfd_driver = { > >> + .driver = { > >> + .name = "sun4i-adc-mfd", > >> + .of_match_table = of_match_ptr(sun4i_gpadc_mfd_of_match), > >> + }, > >> + .probe = sun4i_gpadc_mfd_probe, > > > > No .remove? > > > > No, everything in probe is handled with devm functions. Don't you need to undo the register write you did? -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org ? Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2016-09-12 9:57 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-09-08 14:28 [PATCH v5 0/3] add support for Allwinner SoCs ADC Quentin Schulz 2016-09-08 14:28 ` Quentin Schulz 2016-09-08 14:28 ` [PATCH v5 1/3] hwmon: iio_hwmon: defer probe when no channel is found Quentin Schulz 2016-09-08 14:28 ` Quentin Schulz 2016-09-09 4:26 ` Guenter Roeck 2016-09-09 4:26 ` Guenter Roeck 2016-09-10 15:02 ` Jonathan Cameron 2016-09-10 15:02 ` Jonathan Cameron 2016-09-08 14:28 ` [PATCH v5 2/3] mfd: add support for Allwinner SoCs ADC Quentin Schulz 2016-09-08 14:28 ` Quentin Schulz 2016-09-09 14:38 ` Maxime Ripard 2016-09-09 14:38 ` Maxime Ripard 2016-09-10 15:07 ` Jonathan Cameron 2016-09-10 15:07 ` Jonathan Cameron 2016-09-12 9:18 ` Lee Jones 2016-09-12 9:18 ` Lee Jones 2016-09-12 9:43 ` Quentin Schulz 2016-09-12 9:43 ` Quentin Schulz 2016-09-12 9:59 ` Lee Jones [this message] 2016-09-12 9:59 ` Lee Jones 2016-09-12 10:07 ` Maxime Ripard 2016-09-12 10:07 ` Maxime Ripard 2016-09-12 10:49 ` Lee Jones 2016-09-12 10:49 ` Lee Jones 2016-09-12 10:58 ` Quentin Schulz 2016-09-12 10:58 ` Quentin Schulz 2016-09-12 13:56 ` Lee Jones 2016-09-12 13:56 ` Lee Jones 2016-09-12 14:35 ` Maxime Ripard 2016-09-12 14:35 ` Maxime Ripard 2016-09-12 15:07 ` Lee Jones 2016-09-12 15:07 ` Lee Jones 2016-09-12 11:08 ` Quentin Schulz 2016-09-12 11:08 ` Quentin Schulz 2016-09-12 13:56 ` Lee Jones 2016-09-12 13:56 ` Lee Jones 2016-09-13 7:06 ` Quentin Schulz 2016-09-13 7:06 ` Quentin Schulz 2016-09-13 8:21 ` Lee Jones 2016-09-13 8:21 ` Lee Jones 2016-09-08 14:28 ` [PATCH v5 3/3] iio: adc: " Quentin Schulz 2016-09-08 14:28 ` Quentin Schulz 2016-09-09 14:50 ` Maxime Ripard 2016-09-09 14:50 ` Maxime Ripard 2016-09-10 15:09 ` Jonathan Cameron 2016-09-10 15:09 ` Jonathan Cameron
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