Hi Guoniu,
Thank you for the patch.
On Wed, Jun 28, 2023 at 02:42:50PM +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 | 9 ++--
> .../platform/nxp/imx8-isi/imx8-isi-core.h | 20 +++----
> .../platform/nxp/imx8-isi/imx8-isi-crossbar.c | 40 +++-----------
> .../platform/nxp/imx8-isi/imx8-isi-gasket.c | 52 +++++++++++++++++++
> 5 files changed, 74 insertions(+), 51 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..f2774325dd61 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> @@ -18,9 +18,6 @@
> #include <linux/string.h>
> #include <linux/types.h>
>
> -#include <media/media-device.h>
> -#include <media/v4l2-async.h>
> -#include <media/v4l2-device.h>
Why do you remove those three headers ? The changes below in this file
are unrelated. Did you realize the headers are not needed, or is it a
change included by mistake ?
> #include <media/v4l2-mc.h>
>
> #include "imx8-isi-core.h"
> @@ -289,7 +286,7 @@ 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 +300,7 @@ 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 +440,7 @@ 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..87182ebb99f0 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> @@ -10,14 +10,6 @@
> #ifndef __MXC_ISI_CORE_H__
> #define __MXC_ISI_CORE_H__
>
> -#include <linux/list.h>
> -#include <linux/mutex.h>
> -#include <linux/spinlock.h>
> -#include <linux/types.h>
> -#include <linux/videodev2.h>
> -
> -#include <media/media-device.h>
> -#include <media/media-entity.h>
Same question here.
> #include <media/v4l2-async.h>
> #include <media/v4l2-ctrls.h>
> #include <media/v4l2-dev.h>
> @@ -147,6 +139,14 @@ 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 +159,10 @@ 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 +286,8 @@ 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..55637b6ffccf 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> @@ -8,15 +8,10 @@
> #include <linux/device.h>
> #include <linux/errno.h>
> #include <linux/kernel.h>
> -#include <linux/minmax.h>
> -#include <linux/regmap.h>
> -#include <linux/slab.h>
And here :-)
> #include <linux/string.h>
> #include <linux/types.h>
>
> #include <media/media-entity.h>
> -#include <media/mipi-csi2.h>
This is right, as the header is included only for
MIPI_CSI2_DT_YUV422_8B, which is removed below.
> -#include <media/v4l2-subdev.h>
But this doesn't seem right.
>
> #include "imx8-isi-core.h"
>
> @@ -25,32 +20,18 @@ 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 +58,7 @@ 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 +66,12 @@ 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..f3758af59db1
> --- /dev/null
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-gasket.c
> @@ -0,0 +1,52 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2019-2023 NXP
> + */
A blank line here would be nice, like in the other files.
> +#include <linux/regmap.h>
Here too.
> +#include <media/mipi-csi2.h>
> +
> +#include "imx8-isi-core.h"
> +
Let's use section headers like in the other files, to clearly separate
the i.MX8 and i.MX9 implementations.
/* -----------------------------------------------------------------------------
* i.MX8MN and i.MX8MP gasket
*/
> +/* GASKET (i.MX8MN and i.MX8MP only) */
Then you can drop this comment, and the ones before the enable and
disable functions.
> +#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
> +
> +/* Configure and enable gasket for i.MX8MN and i.MX8P */
> +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);
> +}
> +
> +/* Disable gasket for i.MX8MN and i.MX8P */
> +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 */
> +const struct mxc_gasket_ops mxc_imx8_gasket_ops = {
> + .enable = mxc_imx8_gasket_enable,
> + .disable = mxc_imx8_gasket_disable,
> +};
--
Regards,
Laurent Pinchart
