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Message-ID: <DB7PR04MB44902F057F8541CF3C7FC3198FB10@DB7PR04MB4490.eurprd04.prod.outlook.com>
Date: Wed, 11 Sep 2019 06:23:49 +0000
From: Biwen Li <biwen.li@....com>
To: 'Andy Shevchenko' <andy.shevchenko@...il.com>
CC: "Rafael J. Wysocki" <rafael@...nel.org>,
Leo Li <leoyang.li@....com>,
Meenakshi Aggarwal <meenakshi.aggarwal@....com>,
Udit Kumar <udit.kumar@....com>,
Wolfram Sang <wsa@...-dreams.de>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Chuanhua Han <chuanhua.han@....com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-i2c <linux-i2c@...r.kernel.org>,
linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [EXT] Re: [v2] ACPI: support for NXP i2c controller
、>
> Caution: EXT Email
>
> On Fri, Sep 6, 2019 at 11:03 AM Biwen Li <biwen.li@....com> wrote:
> >
> > From: Chuanhua Han <chuanhua.han@....com>
> >
> > Enable NXP i2c controller to boot with ACPI
> >
>
> Thanks, the code looks good to me,
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
>
> though...
>
> > Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@....com>
> > Signed-off-by: Udit Kumar <udit.kumar@....com>
> > Signed-off-by: Chuanhua Han <chuanhua.han@....com>
>
> This SoB chain is a bit odd. Who is the author of this? The first SoB in the chain
> usually points to the first (main) author. There is also possible to change that,
> though in that case for the rest we now use Co-developed-by tag rather than
> SoB.
> In any case, if Rafael and Wolfram are okay with this, I have no objections.
Thanks.
>
> > Signed-off-by: Biwen Li <biwen.li@....com>
> > ---
> > Change in v2:
> > - Simplify code
> > - Adjust header file order
> > - Not use ACPI_PTR()
> >
> > drivers/acpi/acpi_apd.c | 7 +++++++
> > drivers/i2c/busses/i2c-imx.c | 17 +++++++++++++----
> > 2 files changed, 20 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c index
> > 7cd0c9ac71ea..71511ae2dfcd 100644
> > --- a/drivers/acpi/acpi_apd.c
> > +++ b/drivers/acpi/acpi_apd.c
> > @@ -160,11 +160,17 @@ static const struct apd_device_desc
> hip08_i2c_desc = {
> > .setup = acpi_apd_setup,
> > .fixed_clk_rate = 250000000,
> > };
> > +
> > static const struct apd_device_desc thunderx2_i2c_desc = {
> > .setup = acpi_apd_setup,
> > .fixed_clk_rate = 125000000,
> > };
> >
> > +static const struct apd_device_desc nxp_i2c_desc = {
> > + .setup = acpi_apd_setup,
> > + .fixed_clk_rate = 350000000,
> > +};
> > +
> > static const struct apd_device_desc hip08_spi_desc = {
> > .setup = acpi_apd_setup,
> > .fixed_clk_rate = 250000000,
> > @@ -238,6 +244,7 @@ static const struct acpi_device_id
> acpi_apd_device_ids[] = {
> > { "HISI02A1", APD_ADDR(hip07_i2c_desc) },
> > { "HISI02A2", APD_ADDR(hip08_i2c_desc) },
> > { "HISI0173", APD_ADDR(hip08_spi_desc) },
> > + { "NXP0001", APD_ADDR(nxp_i2c_desc) },
> > #endif
> > { }
> > };
> > diff --git a/drivers/i2c/busses/i2c-imx.c
> > b/drivers/i2c/busses/i2c-imx.c index 15f6cde6452f..a3b61336fe55 100644
> > --- a/drivers/i2c/busses/i2c-imx.c
> > +++ b/drivers/i2c/busses/i2c-imx.c
> > @@ -20,6 +20,7 @@
> > *
> > */
> >
> > +#include <linux/acpi.h>
> > #include <linux/clk.h>
> > #include <linux/completion.h>
> > #include <linux/delay.h>
> > @@ -255,6 +256,12 @@ static const struct of_device_id i2c_imx_dt_ids[]
> > = { }; MODULE_DEVICE_TABLE(of, i2c_imx_dt_ids);
> >
> > +static const struct acpi_device_id i2c_imx_acpi_ids[] = {
> > + {"NXP0001", .driver_data = (kernel_ulong_t)&vf610_i2c_hwdata},
> > + { }
> > +};
> > +MODULE_DEVICE_TABLE(acpi, i2c_imx_acpi_ids);
> > +
> > static inline int is_imx1_i2c(struct imx_i2c_struct *i2c_imx) {
> > return i2c_imx->hwdata->devtype == IMX1_I2C; @@ -1048,14
> > +1055,13 @@ static const struct i2c_algorithm i2c_imx_algo = {
> >
> > static int i2c_imx_probe(struct platform_device *pdev) {
> > - const struct of_device_id *of_id = of_match_device(i2c_imx_dt_ids,
> > -
> &pdev->dev);
> > struct imx_i2c_struct *i2c_imx;
> > struct resource *res;
> > struct imxi2c_platform_data *pdata =
> dev_get_platdata(&pdev->dev);
> > void __iomem *base;
> > int irq, ret;
> > dma_addr_t phy_addr;
> > + const struct imx_i2c_hwdata *match;
> >
> > dev_dbg(&pdev->dev, "<%s>\n", __func__);
> >
> > @@ -1075,8 +1081,9 @@ static int i2c_imx_probe(struct platform_device
> *pdev)
> > if (!i2c_imx)
> > return -ENOMEM;
> >
> > - if (of_id)
> > - i2c_imx->hwdata = of_id->data;
> > + match = device_get_match_data(&pdev->dev);
> > + if (match)
> > + i2c_imx->hwdata = match;
> > else
> > i2c_imx->hwdata = (struct imx_i2c_hwdata *)
> >
> platform_get_device_id(pdev)->driver_data;
> > @@ -1089,6 +1096,7 @@ static int i2c_imx_probe(struct platform_device
> *pdev)
> > i2c_imx->adapter.nr = pdev->id;
> > i2c_imx->adapter.dev.of_node = pdev->dev.of_node;
> > i2c_imx->base = base;
> > + ACPI_COMPANION_SET(&i2c_imx->adapter.dev,
> ACPI_COMPANION(&pdev->dev));
> >
> > /* Get I2C clock */
> > i2c_imx->clk = devm_clk_get(&pdev->dev, NULL);
> > @@ -1247,6 +1255,7 @@ static struct platform_driver i2c_imx_driver = {
> > .name = DRIVER_NAME,
> > .pm = &i2c_imx_pm_ops,
> > .of_match_table = i2c_imx_dt_ids,
> > + .acpi_match_table = i2c_imx_acpi_ids,
> > },
> > .id_table = imx_i2c_devtype,
> > };
> > --
> > 2.17.1
> >
>
>
> --
> With Best Regards,
> Andy Shevchenko
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