From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Chuanhua Han <chuanhua.han@nxp.com>, Wolfram Sang <wsa@the-dreams.de>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-i2c <linux-i2c@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Leo Li <leoyang.li@nxp.com>,
Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>,
Udit Kumar <udit.kumar@nxp.com>
Subject: Re: [PATCH] ACPI: support for NXP i2c controller
Date: Mon, 2 Sep 2019 22:56:22 +0200 [thread overview]
Message-ID: <CAJZ5v0hY2sL+XfN_4v07_hjvoxgCAt+Q89+wNg5Pky6XKP-mqA@mail.gmail.com> (raw)
In-Reply-To: <20190711102601.20582-1-chuanhua.han@nxp.com>
On Thu, Jul 11, 2019 at 12:35 PM Chuanhua Han <chuanhua.han@nxp.com> wrote:
>
> Enable NXP i2c controller to boot with ACPI
>
> Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
> Signed-off-by: Udit Kumar <udit.kumar@nxp.com>
> Signed-off-by: Chuanhua Han <chuanhua.han@nxp.com>
Wolfram, any objections to this from the i2c side?
> ---
> drivers/acpi/acpi_apd.c | 6 ++++++
> drivers/i2c/busses/i2c-imx.c | 15 +++++++++++++++
> 2 files changed, 21 insertions(+)
>
> diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
> index ff47317..cf8566c 100644
> --- a/drivers/acpi/acpi_apd.c
> +++ b/drivers/acpi/acpi_apd.c
> @@ -165,6 +165,11 @@ static const struct apd_device_desc thunderx2_i2c_desc = {
> .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 +243,7 @@ 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 b1b8b93..99f9b96 100644
> --- a/drivers/i2c/busses/i2c-imx.c
> +++ b/drivers/i2c/busses/i2c-imx.c
> @@ -44,6 +44,7 @@
> #include <linux/pm_runtime.h>
> #include <linux/sched.h>
> #include <linux/slab.h>
> +#include <linux/acpi.h>
>
> /* This will be the driver name the kernel reports */
> #define DRIVER_NAME "imx-i2c"
> @@ -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;
> @@ -1052,6 +1059,9 @@ 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);
> + const struct acpi_device_id *acpi_id =
> + acpi_match_device(i2c_imx_acpi_ids,
> + &pdev->dev);
> struct imx_i2c_struct *i2c_imx;
> struct resource *res;
> struct imxi2c_platform_data *pdata = dev_get_platdata(&pdev->dev);
> @@ -1079,6 +1089,9 @@ static int i2c_imx_probe(struct platform_device *pdev)
>
> if (of_id)
> i2c_imx->hwdata = of_id->data;
> + else if (acpi_id)
> + i2c_imx->hwdata = (struct imx_i2c_hwdata *)
> + acpi_id->driver_data;
> else
> i2c_imx->hwdata = (struct imx_i2c_hwdata *)
> platform_get_device_id(pdev)->driver_data;
> @@ -1091,6 +1104,7 @@ 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);
> @@ -1253,6 +1267,7 @@ 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 = ACPI_PTR(i2c_imx_acpi_ids),
> },
> .id_table = imx_i2c_devtype,
> };
> --
> 2.9.5
>
next prev parent reply other threads:[~2019-09-02 20:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-11 10:26 [PATCH] ACPI: support for NXP i2c controller Chuanhua Han
2019-07-18 8:45 ` Rafael J. Wysocki
2019-07-18 8:48 ` [EXT] " Chuanhua Han
2019-09-02 20:56 ` Rafael J. Wysocki [this message]
2019-09-02 21:02 ` Wolfram Sang
2019-09-02 21:16 ` Andy Shevchenko
2019-09-03 5:41 ` Oleksij Rempel
[not found] ` <AM7PR04MB6885DB03C6B96C7932DDA74B8EB90@AM7PR04MB6885.eurprd04.prod.outlook.com>
2019-09-05 4:33 ` Biwen Li
2019-09-05 15:04 ` Biwen Li
2019-09-03 10:50 ` Oleksij Rempel
2019-09-03 11:08 ` Meenakshi Aggarwal
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