Hi Guoniu,
Thank you for the patch.
On Thu, Jun 29, 2023 at 09:36:20AM +0800, guoniu.zhou@xxxxxxxxxxx wrote:
> From: "Guoniu.zhou" <guoniu.zhou@xxxxxxx>
>
> The i.MX93 includes an ISI instance compatible with the imx8-isi
> driver, but with a different gasket. To prepare for this, make the
> gasket configuration modular by moving the code to an ops structure.
>
> Signed-off-by: Guoniu.zhou <guoniu.zhou@xxxxxxx>
> ---
> drivers/media/platform/nxp/imx8-isi/Makefile | 4 +-
> .../platform/nxp/imx8-isi/imx8-isi-core.c | 6 +-
> .../platform/nxp/imx8-isi/imx8-isi-core.h | 12 +++-
> .../platform/nxp/imx8-isi/imx8-isi-crossbar.c | 36 ++----------
> .../platform/nxp/imx8-isi/imx8-isi-gasket.c | 55 +++++++++++++++++++
> 5 files changed, 77 insertions(+), 36 deletions(-)
>
> diff --git a/drivers/media/platform/nxp/imx8-isi/Makefile b/drivers/media/platform/nxp/imx8-isi/Makefile
> index 9bff9297686d..4713c4e8b64b 100644
> --- a/drivers/media/platform/nxp/imx8-isi/Makefile
> +++ b/drivers/media/platform/nxp/imx8-isi/Makefile
> @@ -1,7 +1,7 @@
> # SPDX-License-Identifier: GPL-2.0-only
>
> -imx8-isi-y := imx8-isi-core.o imx8-isi-crossbar.o imx8-isi-hw.o \
> - imx8-isi-pipe.o imx8-isi-video.o
> +imx8-isi-y := imx8-isi-core.o imx8-isi-crossbar.o imx8-isi-gasket.o \
> + imx8-isi-hw.o imx8-isi-pipe.o imx8-isi-video.o
> imx8-isi-$(CONFIG_DEBUG_FS) += imx8-isi-debug.o
> imx8-isi-$(CONFIG_VIDEO_IMX8_ISI_M2M) += imx8-isi-m2m.o
>
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> index 253e77189b69..5165f8960c2c 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> @@ -289,7 +289,7 @@ static const struct mxc_isi_plat_data mxc_imx8mn_data = {
> .clks = mxc_imx8mn_clks,
> .num_clks = ARRAY_SIZE(mxc_imx8mn_clks),
> .buf_active_reverse = false,
> - .has_gasket = true,
> + .gasket_ops = &mxc_imx8_gasket_ops,
> .has_36bit_dma = false,
> };
>
> @@ -303,7 +303,7 @@ static const struct mxc_isi_plat_data mxc_imx8mp_data = {
> .clks = mxc_imx8mn_clks,
> .num_clks = ARRAY_SIZE(mxc_imx8mn_clks),
> .buf_active_reverse = true,
> - .has_gasket = true,
> + .gasket_ops = &mxc_imx8_gasket_ops,
> .has_36bit_dma = true,
> };
>
> @@ -443,7 +443,7 @@ static int mxc_isi_probe(struct platform_device *pdev)
> return PTR_ERR(isi->regs);
> }
>
> - if (isi->pdata->has_gasket) {
> + if (isi->pdata->gasket_ops) {
> isi->gasket = syscon_regmap_lookup_by_phandle(dev->of_node,
> "fsl,blk-ctrl");
> if (IS_ERR(isi->gasket)) {
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> index e469788a9e6c..78ca047d93d1 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> @@ -147,6 +147,14 @@ struct mxc_isi_set_thd {
> struct mxc_isi_panic_thd panic_set_thd_v;
> };
>
> +struct mxc_gasket_ops {
> + void (*enable)(struct mxc_isi_dev *isi,
> + const struct v4l2_mbus_frame_desc *fd,
> + const struct v4l2_mbus_framefmt *fmt,
> + const unsigned int port);
> + void (*disable)(struct mxc_isi_dev *isi, const unsigned int port);
> +};
> +
> enum model {
> MXC_ISI_IMX8MN,
> MXC_ISI_IMX8MP,
> @@ -159,10 +167,10 @@ struct mxc_isi_plat_data {
> unsigned int reg_offset;
> const struct mxc_isi_ier_reg *ier_reg;
> const struct mxc_isi_set_thd *set_thd;
> + const struct mxc_gasket_ops *gasket_ops;
> const struct clk_bulk_data *clks;
> unsigned int num_clks;
> bool buf_active_reverse;
> - bool has_gasket;
> bool has_36bit_dma;
> };
>
> @@ -286,6 +294,8 @@ struct mxc_isi_dev {
> struct dentry *debugfs_root;
> };
>
> +extern const struct mxc_gasket_ops mxc_imx8_gasket_ops;
> +
> int mxc_isi_crossbar_init(struct mxc_isi_dev *isi);
> void mxc_isi_crossbar_cleanup(struct mxc_isi_crossbar *xbar);
> int mxc_isi_crossbar_register(struct mxc_isi_crossbar *xbar);
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> index f7447b2f4d77..c6a658ef0c62 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> @@ -15,7 +15,6 @@
> #include <linux/types.h>
>
> #include <media/media-entity.h>
> -#include <media/mipi-csi2.h>
> #include <media/v4l2-subdev.h>
>
> #include "imx8-isi-core.h"
> @@ -25,32 +24,18 @@ static inline struct mxc_isi_crossbar *to_isi_crossbar(struct v4l2_subdev *sd)
> return container_of(sd, struct mxc_isi_crossbar, sd);
> }
>
> -/* -----------------------------------------------------------------------------
> - * Media block control (i.MX8MN and i.MX8MP only)
> - */
> -#define GASKET_BASE(n) (0x0060 + (n) * 0x30)
> -
> -#define GASKET_CTRL 0x0000
> -#define GASKET_CTRL_DATA_TYPE(dt) ((dt) << 8)
> -#define GASKET_CTRL_DATA_TYPE_MASK (0x3f << 8)
> -#define GASKET_CTRL_DUAL_COMP_ENABLE BIT(1)
> -#define GASKET_CTRL_ENABLE BIT(0)
> -
> -#define GASKET_HSIZE 0x0004
> -#define GASKET_VSIZE 0x0008
> -
> static int mxc_isi_crossbar_gasket_enable(struct mxc_isi_crossbar *xbar,
> struct v4l2_subdev_state *state,
> struct v4l2_subdev *remote_sd,
> u32 remote_pad, unsigned int port)
> {
> struct mxc_isi_dev *isi = xbar->isi;
> + const struct mxc_gasket_ops *gasket_ops = isi->pdata->gasket_ops;
> const struct v4l2_mbus_framefmt *fmt;
> struct v4l2_mbus_frame_desc fd;
> - u32 val;
> int ret;
>
> - if (!isi->pdata->has_gasket)
> + if (!gasket_ops)
> return 0;
>
> /*
> @@ -77,17 +62,7 @@ static int mxc_isi_crossbar_gasket_enable(struct mxc_isi_crossbar *xbar,
> if (!fmt)
> return -EINVAL;
>
> - regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_HSIZE, fmt->width);
> - regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_VSIZE, fmt->height);
> -
> - val = GASKET_CTRL_DATA_TYPE(fd.entry[0].bus.csi2.dt)
> - | GASKET_CTRL_ENABLE;
> -
> - if (fd.entry[0].bus.csi2.dt == MIPI_CSI2_DT_YUV422_8B)
> - val |= GASKET_CTRL_DUAL_COMP_ENABLE;
> -
> - regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_CTRL, val);
> -
> + gasket_ops->enable(isi, &fd, fmt, port);
> return 0;
> }
>
> @@ -95,11 +70,12 @@ static void mxc_isi_crossbar_gasket_disable(struct mxc_isi_crossbar *xbar,
> unsigned int port)
> {
> struct mxc_isi_dev *isi = xbar->isi;
> + const struct mxc_gasket_ops *gasket_ops = isi->pdata->gasket_ops;
>
> - if (!isi->pdata->has_gasket)
> + if (!gasket_ops)
> return;
>
> - regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_CTRL, 0);
> + gasket_ops->disable(isi, port);
> }
>
> /* -----------------------------------------------------------------------------
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
> new file mode 100644
> index 000000000000..1d632dc60699
> --- /dev/null
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
> @@ -0,0 +1,55 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2019-2023 NXP
> + */
> +
> +#include <linux/regmap.h>
> +
> +#include <media/mipi-csi2.h>
> +
> +#include "imx8-isi-core.h"
> +
> +/* -----------------------------------------------------------------------------
> + * i.MX8MN and i.MX8MP gasket
> + **/
There's an extra star here, it should be
*/
> +
> +#define GASKET_BASE(n) (0x0060 + (n) * 0x30)
> +
> +#define GASKET_CTRL 0x0000
> +#define GASKET_CTRL_DATA_TYPE(dt) ((dt) << 8)
> +#define GASKET_CTRL_DATA_TYPE_MASK (0x3f << 8)
> +#define GASKET_CTRL_DUAL_COMP_ENABLE BIT(1)
> +#define GASKET_CTRL_ENABLE BIT(0)
> +
> +#define GASKET_HSIZE 0x0004
> +#define GASKET_VSIZE 0x0008
> +
> +static void mxc_imx8_gasket_enable(struct mxc_isi_dev *isi,
> + const struct v4l2_mbus_frame_desc *fd,
> + const struct v4l2_mbus_framefmt *fmt,
> + const unsigned int port)
> +{
> + u32 val;
> +
> + regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_HSIZE, fmt->width);
> + regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_VSIZE, fmt->height);
> +
> + val = GASKET_CTRL_DATA_TYPE(fd->entry[0].bus.csi2.dt);
> + if (fd->entry[0].bus.csi2.dt == MIPI_CSI2_DT_YUV422_8B)
> + val |= GASKET_CTRL_DUAL_COMP_ENABLE;
> +
> + val |= GASKET_CTRL_ENABLE;
> + regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_CTRL, val);
> +}
> +
> +static void mxc_imx8_gasket_disable(struct mxc_isi_dev *isi,
> + const unsigned int port)
> +{
> + regmap_write(isi->gasket, GASKET_BASE(port) + GASKET_CTRL, 0);
> +}
> +
> +/* Gasket operations for i.MX8MN and i.MX8MP */
This comment can be dropped too, the section header above is enough.
With these minor issues fixed,
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
There's no need to resubmit the series just for this, I can make those
modifications locally if no other changes are needed.
> +const struct mxc_gasket_ops mxc_imx8_gasket_ops = {
> + .enable = mxc_imx8_gasket_enable,
> + .disable = mxc_imx8_gasket_disable,
> +};
--
Regards,
Laurent Pinchart
