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SubjectRe: [v2] ACPI: support for NXP i2c controller
On Fri, Sep 06, 2019 at 03:53:19PM +0800, Biwen Li wrote:
> From: Chuanhua Han <chuanhua.han@nxp.com>
>
> 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>
> Signed-off-by: Biwen Li <biwen.li@nxp.com>

for i2c-imx.c:
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Tested on iMX6Q SabreSD
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>

> ---
> 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
>
>

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