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Message-ID: <20200831112656.GK31019@paasikivi.fi.intel.com>
Date: Mon, 31 Aug 2020 14:26:57 +0300
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Kévin L'hôpital <kevin.lhopital@...tlin.com>
Cc: linux-media@...r.kernel.org, robh+dt@...nel.org,
mark.rutland@....com, mripard@...nel.org, wens@...e.org,
yong.deng@...ewell.com, mchehab+samsung@...nel.org,
p.zabel@...gutronix.de, hans.verkuil@...co.com,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
paul.kocialkowski@...tlin.com, thomas.petazzoni@...tlin.com
Subject: Re: [PATCH v2 3/4] media: sunxi: sun6i-csi: Add support of MIPI
CSI-2 for A83T
Hi Kévin,
On Fri, Aug 28, 2020 at 03:17:35PM +0200, Kévin L'hôpital wrote:
> This patch add the support only for the Allwinner A83T MIPI CSI-2.
> Currently, the driver does not support the V3s MIPI CSI-2 controller.
> On the A83T, the CSI controller is the same as the other V3s Soc, but
> the MIPI CSI2 controller is not.
>
> It was tested with the ov8865 image sensor.
>
> Signed-off-by: Kévin L'hôpital <kevin.lhopital@...tlin.com>
> ---
> .../media/platform/sunxi/sun6i-csi/Makefile | 2 +-
> .../platform/sunxi/sun6i-csi/sun6i_csi.c | 84 +++++--
> .../sunxi/sun6i-csi/sun8i_a83t_dphy.c | 39 ++++
> .../sunxi/sun6i-csi/sun8i_a83t_dphy.h | 16 ++
> .../sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h | 39 ++++
> .../sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c | 217 ++++++++++++++++++
> .../sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h | 16 ++
> .../sun6i-csi/sun8i_a83t_mipi_csi2_reg.h | 179 +++++++++++++++
> 8 files changed, 575 insertions(+), 17 deletions(-)
> create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.c
> create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.h
> create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h
> create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c
> create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h
> create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2_reg.h
>
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/Makefile b/drivers/media/platform/sunxi/sun6i-csi/Makefile
> index e7e315347804..0f3849790463 100644
> --- a/drivers/media/platform/sunxi/sun6i-csi/Makefile
> +++ b/drivers/media/platform/sunxi/sun6i-csi/Makefile
> @@ -1,4 +1,4 @@
> # SPDX-License-Identifier: GPL-2.0-only
> -sun6i-csi-y += sun6i_video.o sun6i_csi.o
> +sun6i-csi-y += sun6i_video.o sun6i_csi.o sun8i_a83t_mipi_csi2.o sun8i_a83t_dphy.o
>
> obj-$(CONFIG_VIDEO_SUN6I_CSI) += sun6i-csi.o
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> index 680fa31f380a..cf346e536959 100644
> --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> @@ -26,6 +26,7 @@
>
> #include "sun6i_csi.h"
> #include "sun6i_csi_reg.h"
> +#include "sun8i_a83t_mipi_csi2.h"
>
> #define MODULE_NAME "sun6i-csi"
>
> @@ -160,10 +161,14 @@ int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable)
> regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, 0);
>
> clk_disable_unprepare(sdev->clk_ram);
> +
> if (of_device_is_compatible(dev->of_node,
> "allwinner,sun50i-a64-csi"))
> clk_rate_exclusive_put(sdev->clk_mod);
> clk_disable_unprepare(sdev->clk_mod);
> + if (csi->v4l2_ep.bus_type == V4L2_MBUS_CSI2_DPHY)
> + sun6i_mipi_csi_clk_disable(csi);
> +
> reset_control_assert(sdev->rstc_bus);
> return 0;
> }
> @@ -189,10 +194,18 @@ int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable)
> goto clk_ram_disable;
> }
>
> + if (csi->v4l2_ep.bus_type == V4L2_MBUS_CSI2_DPHY) {
> + ret = sun6i_mipi_csi_clk_enable(csi);
> + if (ret)
> + goto reset_control_assert;
> + }
> +
> regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, CSI_EN_CSI_EN);
>
> return 0;
>
> +reset_control_assert:
> + reset_control_assert(sdev->rstc_bus);
> clk_ram_disable:
> clk_disable_unprepare(sdev->clk_ram);
> clk_mod_disable:
> @@ -421,27 +434,34 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev)
> if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
> cfg |= CSI_IF_CFG_CLK_POL_FALLING_EDGE;
> break;
> + case V4L2_MBUS_CSI2_DPHY:
> + cfg |= CSI_IF_CFG_MIPI_IF_MIPI;
> + sun6i_mipi_csi_setup_bus(csi);
> + break;
> default:
> dev_warn(sdev->dev, "Unsupported bus type: %d\n",
> endpoint->bus_type);
> break;
> }
>
> - switch (bus_width) {
> - case 8:
> - cfg |= CSI_IF_CFG_IF_DATA_WIDTH_8BIT;
> - break;
> - case 10:
> - cfg |= CSI_IF_CFG_IF_DATA_WIDTH_10BIT;
> - break;
> - case 12:
> - cfg |= CSI_IF_CFG_IF_DATA_WIDTH_12BIT;
> - break;
> - case 16: /* No need to configure DATA_WIDTH for 16bit */
> - break;
> - default:
> - dev_warn(sdev->dev, "Unsupported bus width: %u\n", bus_width);
> - break;
> + /* Bus width only applies to parallel bus. */
> + if (endpoint->bus_type != V4L2_MBUS_CSI2_DPHY) {
> + switch (bus_width) {
> + case 8:
> + cfg |= CSI_IF_CFG_IF_DATA_WIDTH_8BIT;
> + break;
> + case 10:
> + cfg |= CSI_IF_CFG_IF_DATA_WIDTH_10BIT;
> + break;
> + case 12:
> + cfg |= CSI_IF_CFG_IF_DATA_WIDTH_12BIT;
> + break;
> + case 16: /* No need to configure DATA_WIDTH for 16bit */
> + break;
> + default:
> + dev_warn(sdev->dev, "Unsupported bus width: %u\n", bus_width);
> + break;
> + }
> }
>
> regmap_write(sdev->regmap, CSI_IF_CFG_REG, cfg);
> @@ -593,6 +613,9 @@ void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable)
> struct regmap *regmap = sdev->regmap;
>
> if (!enable) {
> + if (csi->v4l2_ep.bus_type == V4L2_MBUS_CSI2_DPHY)
> + sun6i_mipi_csi_set_stream(csi, 0);
> +
> regmap_update_bits(regmap, CSI_CAP_REG, CSI_CAP_CH0_VCAP_ON, 0);
> regmap_write(regmap, CSI_CH_INT_EN_REG, 0);
> return;
> @@ -609,6 +632,9 @@ void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable)
>
> regmap_update_bits(regmap, CSI_CAP_REG, CSI_CAP_CH0_VCAP_ON,
> CSI_CAP_CH0_VCAP_ON);
> +
> + if (csi->v4l2_ep.bus_type == V4L2_MBUS_CSI2_DPHY)
> + sun6i_mipi_csi_set_stream(csi, 1);
> }
>
> /* -----------------------------------------------------------------------------
> @@ -685,6 +711,7 @@ static int sun6i_csi_fwnode_parse(struct device *dev,
> struct v4l2_async_subdev *asd)
> {
> struct sun6i_csi *csi = dev_get_drvdata(dev);
> + struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
>
> if (vep->base.port || vep->base.id) {
> dev_warn(dev, "Only support a single port with one endpoint\n");
> @@ -692,6 +719,17 @@ static int sun6i_csi_fwnode_parse(struct device *dev,
> }
>
> switch (vep->bus_type) {
> + case V4L2_MBUS_CSI2_DPHY:
> + if (!sdev->clk_mipi) {
> + dev_err(sdev->dev, "Use MIPI-CSI2 device with no MIPI clock\n");
> + return -ENOTCONN;
> + }
> + if (!sdev->clk_misc) {
> + dev_err(sdev->dev, "Use MIPI-CSI2 device with no misc clock\n");
> + return -ENOTCONN;
> + }
> + csi->v4l2_ep = *vep;
> + return 0;
> case V4L2_MBUS_PARALLEL:
> case V4L2_MBUS_BT656:
> csi->v4l2_ep = *vep;
> @@ -812,12 +850,13 @@ static const struct regmap_config sun6i_csi_regmap_config = {
> .reg_bits = 32,
> .reg_stride = 4,
> .val_bits = 32,
> - .max_register = 0x9c,
> + .max_register = 0x2000,
> };
>
> static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
> struct platform_device *pdev)
> {
> + struct device *dev = sdev->dev;
> struct resource *res;
> void __iomem *io_base;
> int ret;
> @@ -847,6 +886,19 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
> return PTR_ERR(sdev->clk_ram);
> }
>
> + if (of_device_is_compatible(dev->of_node, "allwinner,sun8i-a83t-csi")) {
It'd be cleaner to rely on of_device_get_match_data() attached to a
compatible string instead.
> + sdev->clk_mipi = devm_clk_get(&pdev->dev, "mipi");
> + if (IS_ERR(sdev->clk_mipi)) {
> + sdev->clk_mipi = NULL;
> + dev_warn(&pdev->dev, "Unable to acquire mipi clock. No mipi support\n");
> + }
> +
> + sdev->clk_misc = devm_clk_get(&pdev->dev, "misc");
> + if (IS_ERR(sdev->clk_misc)) {
> + sdev->clk_misc = NULL;
> + dev_warn(&pdev->dev, "Unable to acquire misc clock. No mipi support\n");
> + }
> + }
> sdev->rstc_bus = devm_reset_control_get_shared(&pdev->dev, NULL);
> if (IS_ERR(sdev->rstc_bus)) {
> dev_err(&pdev->dev, "Cannot get reset controller\n");
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.c b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.c
> new file mode 100644
> index 000000000000..bb9599c3bde9
> --- /dev/null
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.c
> @@ -0,0 +1,39 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * sun6i_dphy.c
> + * Copyright Kévin L'hôpital (C) 2020
> + */
> +
> +#include "sun8i_a83t_dphy.h"
> +#include "sun8i_a83t_dphy_reg.h"
> +
> +/* First initialization to turn on the dphy for the MIPI CSI2 controller
> + * initialization.
> + */
> +
> +void sun6i_dphy_first_init(struct sun6i_csi_dev *sdev)
> +{
> + regmap_update_bits(sdev->regmap, DPHY_CTRL_REG, DPHY_CTRL_REG_DBG,
> + DPHY_CTRL_REG_DBG);
> + regmap_update_bits(sdev->regmap, DPHY_CTRL_REG, DPHY_CTRL_REG_SHUT, 0);
> + regmap_update_bits(sdev->regmap, DPHY_CTRL_REG, DPHY_CTRL_REG_RSTN,
> + DPHY_CTRL_REG_RSTN);
> +}
> +
> +/* Second initialization to turn off the dphy and do its initialization. */
> +void sun6i_dphy_second_init(struct sun6i_csi_dev *sdev)
> +{
> + regmap_update_bits(sdev->regmap, DPHY_CTRL_REG, DPHY_CTRL_REG_DBG, 0);
> + regmap_update_bits(sdev->regmap, DPHY_CTRL_REG, DPHY_CTRL_REG_SHUT,
> + DPHY_CTRL_REG_SHUT);
> + regmap_update_bits(sdev->regmap, DPHY_CTRL_REG, DPHY_CTRL_REG_RSTN,
> + DPHY_CTRL_REG_RSTN);
> + regmap_update_bits(sdev->regmap, DPHY_ANA0_REG, DPHY_ANA0_REG_SNK_MASK,
> + DPHY_ANA0_REG_SNK(0x02));
> + regmap_update_bits(sdev->regmap, DPHY_ANA0_REG, DPHY_ANA0_REG_RINT_MASK,
> + DPHY_ANA0_REG_RINT(0x02));
> + regmap_update_bits(sdev->regmap, DPHY_ANA0_REG, DPHY_ANA0_REG_REXT, 0);
> + regmap_update_bits(sdev->regmap, DPHY_ANA0_REG, DPHY_ANA0_REG_ENREXT,
> + DPHY_ANA0_REG_ENREXT);
> +}
> +
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.h b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.h
> new file mode 100644
> index 000000000000..f776ed098cb3
> --- /dev/null
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.h
> @@ -0,0 +1,16 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * sun6i_dphy.h
> + * Copyright Kévin L'hôpital (C) 2020
> + */
> +
> +#ifndef __SUN8I_A83T_DPHY_H__
> +#define __SUN8I_A83T_DPHY_H__
> +
> +#include <linux/regmap.h>
> +#include "sun6i_csi.h"
> +
> +void sun6i_dphy_first_init(struct sun6i_csi_dev *sdev);
> +void sun6i_dphy_second_init(struct sun6i_csi_dev *sdev);
> +
> +#endif /* __SUN8I_A83T_DPHY_H__ */
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h
> new file mode 100644
> index 000000000000..815692b112d2
> --- /dev/null
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h
> @@ -0,0 +1,39 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Allwinner A83t DPHY register description
> + * Copyright Kévin L'hôpital (C) 2020
> + */
> +
> +#ifndef __SUN8I_A83T_DPHY_REG_H__
> +#define __SUN8I_A83T_DPHY_REG_H__
> +
> +
> +#define DPHY_OFFSET 0x1000
> +
> +#define DPHY_CTRL_REG (DPHY_OFFSET + 0x010)
> +#define DPHY_CTRL_REG_RSTN BIT(31)
> +#define DPHY_CTRL_REG_SHUT BIT(15)
> +#define DPHY_CTRL_REG_DBG BIT(8)
> +
> +#define DPHY_STATUS_REG (DPHY_OFFSET + 0x014)
> +#define DPHY_STATUS_REG_CLK_STOP BIT(10)
> +#define DPHY_STATUS_REG_CLK_UPLS BIT(9)
> +#define DPHY_STATUS_REG_HSCLK BIT(8)
> +#define DPHY_STATUS_REG_D3_STOP BIT(7)
> +#define DPHY_STATUS_REG_D2_STOP BIT(6)
> +#define DPHY_STATUS_REG_D1_STOP BIT(5)
> +#define DPHY_STATUS_REG_D0_STOP BIT(4)
> +#define DPHY_STATUS_REG_D3_UPLS BIT(3)
> +#define DPHY_STATUS_REG_D2_UPLS BIT(2)
> +#define DPHY_STATUS_REG_D1_UPLS BIT(1)
> +#define DPHY_STATUS_REG_D0_UPLS BIT(0)
> +
> +#define DPHY_ANA0_REG (DPHY_OFFSET + 0x030)
> +#define DPHY_ANA0_REG_ENREXT BIT(31)
> +#define DPHY_ANA0_REG_REXT BIT(30)
> +#define DPHY_ANA0_REG_RINT_MASK GENMASK(29, 28)
> +#define DPHY_ANA0_REG_RINT(v) ((v) << 28)
> +#define DPHY_ANA0_REG_SNK_MASK GENMASK(22, 20)
> +#define DPHY_ANA0_REG_SNK(v) ((v) << 20)
> +
> +#endif /* __SUN8I_A83T_DPHY_REG_H__ */
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c
> new file mode 100644
> index 000000000000..2933238cbc95
> --- /dev/null
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c
> @@ -0,0 +1,217 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Allwinner A83t MIPI Camera Sensor Interface 2 driver
> + * Copyright Kévin L'hôpital (C) 2020
> + */
> +
> +#include <linux/clk.h>
> +#include "sun8i_a83t_mipi_csi2.h"
> +#include "sun8i_a83t_mipi_csi2_reg.h"
> +#include "sun8i_a83t_dphy.h"
> +#include <linux/delay.h>
> +
> +#define IS_FLAG(x, y) (((x) & (y)) == y)
> +
> +enum mipi_csi2_pkt_fmt {
> + MIPI_FS = 0X00,
> + MIPI_FE = 0X01,
> + MIPI_LS = 0X02,
> + MIPI_LE = 0X03,
> + MIPI_SDAT0 = 0X08,
> + MIPI_SDAT1 = 0X09,
> + MIPI_SDAT2 = 0X0A,
> + MIPI_SDAT3 = 0X0B,
> + MIPI_SDAT4 = 0X0C,
> + MIPI_SDAT5 = 0X0D,
> + MIPI_SDAT6 = 0X0E,
> + MIPI_SDAT7 = 0X0F,
> + MIPI_BLK = 0X11,
> + MIPI_EMBD = 0X12,
> + MIPI_YUV420 = 0X18,
> + MIPI_YUV420_10 = 0X19,
> + MIPI_YUV420_CSP = 0X1C,
> + MIPI_YUV420_CSP_10 = 0X1D,
> + MIPI_YUV422 = 0X1E,
> + MIPI_YUV422_10 = 0X1F,
> + MIPI_RGB565 = 0X22,
> + MIPI_RGB888 = 0X24,
> + MIPI_RAW8 = 0X2A,
> + MIPI_RAW10 = 0X2B,
> + MIPI_RAW12 = 0X2C,
> + MIPI_USR_DAT0 = 0X30,
> + MIPI_USR_DAT1 = 0X31,
> + MIPI_USR_DAT2 = 0X32,
> + MIPI_USR_DAT3 = 0X33,
> + MIPI_USR_DAT4 = 0X34,
> + MIPI_USR_DAT5 = 0X35,
> + MIPI_USR_DAT6 = 0X36,
> + MIPI_USR_DAT7 = 0X37,
> +};
> +
> +static inline struct sun6i_csi_dev *sun6i_csi_to_dev(struct sun6i_csi *csi)
> +{
> + return container_of(csi, struct sun6i_csi_dev, csi);
> +}
> +
> +static enum mipi_csi2_pkt_fmt get_pkt_fmt(u16 bus_pix_code)
> +{
> + switch (bus_pix_code) {
> + case MEDIA_BUS_FMT_RGB565_1X16:
> + return MIPI_RGB565;
> + case MEDIA_BUS_FMT_UYVY8_2X8:
> + case MEDIA_BUS_FMT_UYVY8_1X16:
> + return MIPI_YUV422;
> + case MEDIA_BUS_FMT_UYVY10_2X10:
> + return MIPI_YUV422_10;
> + case MEDIA_BUS_FMT_RGB888_1X24:
> + return MIPI_RGB888;
> + case MEDIA_BUS_FMT_SBGGR8_1X8:
> + case MEDIA_BUS_FMT_SGBRG8_1X8:
> + case MEDIA_BUS_FMT_SGRBG8_1X8:
> + case MEDIA_BUS_FMT_SRGGB8_1X8:
> + return MIPI_RAW8;
> + case MEDIA_BUS_FMT_SBGGR10_1X10:
> + case MEDIA_BUS_FMT_SGBRG10_1X10:
> + case MEDIA_BUS_FMT_SGRBG10_1X10:
> + case MEDIA_BUS_FMT_SRGGB10_1X10:
> + return MIPI_RAW10;
> + case MEDIA_BUS_FMT_SBGGR12_1X12:
> + case MEDIA_BUS_FMT_SGBRG12_1X12:
> + case MEDIA_BUS_FMT_SGRBG12_1X12:
> + case MEDIA_BUS_FMT_SRGGB12_1X12:
> + return MIPI_RAW12;
> + default:
> + return MIPI_RAW8;
> + }
> +}
> +
> +void sun6i_mipi_csi_set_stream(struct sun6i_csi *csi, bool enable)
> +{
> + struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
> +
> + if (enable)
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_SYNC_EN,
> + MIPI_CSI2_CFG_REG_SYNC_EN);
> + else
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_SYNC_EN, 0);
> +}
> +
> +void sun6i_mipi_csi_init(struct sun6i_csi_dev *sdev)
> +{
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CTRL_REG,
> + MIPI_CSI2_CTRL_REG_RSTN, MIPI_CSI2_CTRL_REG_RSTN);
> + regmap_write(sdev->regmap, MIPI_CSI2_RX_PKT_NUM_REG, 0xb8d257f8);
> + sun6i_dphy_first_init(sdev);
> + regmap_write(sdev->regmap, MIPI_CSI2_RSVD1_REG,
> + HW_LOCK_REGISTER_VALUE_1);
> + regmap_write(sdev->regmap, MIPI_CSI2_RSVD2_REG,
> + HW_LOCK_REGISTER_VALUE_2);
> + regmap_write(sdev->regmap, MIPI_CSI2_RX_PKT_NUM_REG, 0);
> + regmap_write(sdev->regmap, MIPI_CSI2_VCDT0_REG, 0);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_SYNC_DLY_CYCLE_MASK,
> + MIPI_CSI2_CFG_REG_SYNC_DLY_CYCLE(0x11));
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_N_BYTE, 0);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_YC_SWAB, 0);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_NONE_UNPKT_RX_MODE,
> + MIPI_CSI2_CFG_REG_NONE_UNPKT_RX_MODE);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_UNPKT_EN,
> + MIPI_CSI2_CFG_REG_UNPKT_EN);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_BYPASS_ECC_EN,
> + MIPI_CSI2_CFG_REG_BYPASS_ECC_EN);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_SYNC_EN,
> + MIPI_CSI2_CFG_REG_SYNC_EN);
> + sun6i_dphy_second_init(sdev);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CTRL_REG,
> + MIPI_CSI2_CTRL_REG_RSTN, MIPI_CSI2_CTRL_REG_RSTN);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_SYNC_DLY_CYCLE_MASK,
> + MIPI_CSI2_CFG_REG_SYNC_DLY_CYCLE(0x08));
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_NONE_UNPKT_RX_MODE, 0);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_BYPASS_ECC_EN, 0);
> + regmap_update_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_SYNC_EN, 0);
> +}
> +
> +void sun6i_mipi_csi_setup_bus(struct sun6i_csi *csi)
> +{
> + struct v4l2_fwnode_endpoint *endpoint = &csi->v4l2_ep;
> + struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
> + int lane_num = endpoint->bus.mipi_csi2.num_data_lanes;
> + int flags = endpoint->bus.mipi_csi2.flags;
> + int total_rx_ch = 0;
> + int vc;
> +
> + sun6i_mipi_csi_init(sdev);
> +
> + if (IS_FLAG(flags, V4L2_MBUS_CSI2_CHANNEL_0)) {
> + vc = 0;
> + total_rx_ch++;
> + }
> +
> + if (!total_rx_ch) {
> + dev_dbg(sdev->dev,
> + "No receive channel assigned, using channel 0.\n");
> + vc = 0;
> + total_rx_ch++;
> + }
> + /* Set lane. */
> + regmap_write_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_N_LANE_MASK, (lane_num - 1) <<
> + MIPI_CSI2_CFG_REG_N_LANE_SHIFT);
> + /* Set total channels. */
> + regmap_write_bits(sdev->regmap, MIPI_CSI2_CFG_REG,
> + MIPI_CSI2_CFG_REG_N_CHANNEL_MASK, (total_rx_ch - 1) <<
> + MIPI_CSI2_CFG_REG_N_CHANNEL_SHIFT);
> +
> + regmap_write_bits(sdev->regmap, MIPI_CSI2_VCDT0_REG,
> + MIPI_CSI2_VCDT0_REG_CH0_DT_MASK,
> + get_pkt_fmt(csi->config.code));
> + regmap_write_bits(sdev->regmap, MIPI_CSI2_VCDT0_REG,
> + MIPI_CSI2_VCDT0_REG_CH0_VC_MASK,
> + vc << MIPI_CSI2_VCDT0_REG_CH0_VC_SHIFT);
> +}
> +
> +int sun6i_mipi_csi_clk_enable(struct sun6i_csi *csi)
> +{
> + struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
> + int ret;
> +
> + ret = clk_prepare_enable(sdev->clk_mipi);
> + if (ret) {
> + dev_err(sdev->dev, "Enable clk_mipi clk err %d\n", ret);
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(sdev->clk_misc);
> + if (ret) {
> + dev_err(sdev->dev, "Enable clk_misc clk err %d\n", ret);
> + goto clk_mipi_disable;
> + }
> +
> + return 0;
> +
> +clk_mipi_disable:
> + clk_disable_unprepare(sdev->clk_mipi);
> + return ret;
> +}
> +
> +void sun6i_mipi_csi_clk_disable(struct sun6i_csi *csi)
> +{
> + struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
> +
> + clk_disable_unprepare(sdev->clk_misc);
> + clk_disable_unprepare(sdev->clk_mipi);
> +}
> +
> +
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h
> new file mode 100644
> index 000000000000..a94c69ccee39
> --- /dev/null
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h
> @@ -0,0 +1,16 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright Kévin L'hôpital (C) 2020
> + */
> +
> +#ifndef __SUN8I_A83T_MIPI_CSI2_H__
> +#define __SUN8I_A83T_MIPI_CSI2_H__
> +#include <linux/regmap.h>
> +#include "sun6i_csi.h"
> +
> +void sun6i_mipi_csi_set_stream(struct sun6i_csi *csi, bool enable);
> +void sun6i_mipi_csi_setup_bus(struct sun6i_csi *csi);
> +int sun6i_mipi_csi_clk_enable(struct sun6i_csi *csi);
> +void sun6i_mipi_csi_clk_disable(struct sun6i_csi *csi);
> +
> +#endif /* __SUN8I_A83T_MIPI_CSI2_H__ */
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2_reg.h b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2_reg.h
> new file mode 100644
> index 000000000000..43cc46ea1aec
> --- /dev/null
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2_reg.h
> @@ -0,0 +1,179 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Allwinner A83t MIPI CSI-2 register description
> + * Copyright Kévin L'hôpital (C) 2020
> + */
> +
> +#ifndef __SUN8I_A83T_MIPI_CSI2_REG_H__
> +#define __SUN8I_A83T_MIPI_CSI2_REG_H__
> +
> +
> +#define MIPI_CSI2_OFFSET 0x1000
> +
> +#define MIPI_CSI2_VERSION_REG (MIPI_CSI2_OFFSET + 0x000)
> +#define MIPI_CSI2_CTRL_REG (MIPI_CSI2_OFFSET + 0x004)
> +#define MIPI_CSI2_CTRL_REG_RSTN BIT(31)
> +
> +#define MIPI_CSI2_RX_PKT_NUM_REG (MIPI_CSI2_OFFSET + 0x008)
> +#define MIPI_CSI2_RSVD0_REG (MIPI_CSI2_OFFSET + 0x00c)
> +
> +#define MIPI_CSI2_RSVD1_REG (MIPI_CSI2_OFFSET + 0x018)
> +/* Value found in the BSP and need to be present but it is not describe in the
> + * datasheet.
> + */
> +#define HW_LOCK_REGISTER_VALUE_1 0xb8c8a30c
> +#define MIPI_CSI2_RSVD2_REG (MIPI_CSI2_OFFSET + 0x01c)
> +/* Value found in the BSP and need to be present but it is not describe in the
> + * datasheet.
> + */
> +#define HW_LOCK_REGISTER_VALUE_2 0xb8df8ad7
> +
> +#define MIPI_CSI2_INT_STA0_REG (MIPI_CSI2_OFFSET + 0x020)
> +#define MIPI_CSI2_INT_STA0_REG_ECC_ERR_DBL BIT(28)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_CKSM_ERR_VC3 BIT(27)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_CKSM_ERR_VC2 BIT(26)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_CKSM_ERR_VC1 BIT(25)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_CKSM_ERR_VC0 BIT(24)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_SEQ_ERR_DT3 BIT(23)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_SEQ_ERR_DT2 BIT(22)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_SEQ_ERR_DT1 BIT(21)
> +#define MIPI_CSI2_INT_STA0_REG_LINE_SEQ_ERR_DT0 BIT(20)
> +#define MIPI_CSI2_INT_STA0_REG_LS_LE_ERR_DT3 BIT(19)
> +#define MIPI_CSI2_INT_STA0_REG_LS_LE_ERR_DT2 BIT(18)
> +#define MIPI_CSI2_INT_STA0_REG_LS_LE_ERR_DT1 BIT(17)
> +#define MIPI_CSI2_INT_STA0_REG_LS_LE_ERR_DT0 BIT(16)
> +#define MIPI_CSI2_INT_STA0_REG_CRC_ERR_VC3 BIT(15)
> +#define MIPI_CSI2_INT_STA0_REG_CRC_ERR_VC2 BIT(14)
> +#define MIPI_CSI2_INT_STA0_REG_CRC_ERR_VC1 BIT(13)
> +#define MIPI_CSI2_INT_STA0_REG_CRC_ERR_VC0 BIT(12)
> +#define MIPI_CSI2_INT_STA0_REG_FRM_SEQ_ERR_VC3 BIT(11)
> +#define MIPI_CSI2_INT_STA0_REG_FRM_SEQ_ERR_VC2 BIT(10)
> +#define MIPI_CSI2_INT_STA0_REG_FRM_SEQ_ERR_VC1 BIT(9)
> +#define MIPI_CSI2_INT_STA0_REG_FRM_SEQ_ERR_VC0 BIT(8)
> +#define MIPI_CSI2_INT_STA0_REG_FS_FE_ERR_VC3 BIT(7)
> +#define MIPI_CSI2_INT_STA0_REG_FS_FE_ERR_VC2 BIT(6)
> +#define MIPI_CSI2_INT_STA0_REG_FS_FE_ERR_VC1 BIT(5)
> +#define MIPI_CSI2_INT_STA0_REG_FS_FE_ERR_VC0 BIT(4)
> +#define MIPI_CSI2_INT_STA0_REG_SOT_SYNC_ERR_3 BIT(3)
> +#define MIPI_CSI2_INT_STA0_REG_SOT_SYNC_ERR_2 BIT(2)
> +#define MIPI_CSI2_INT_STA0_REG_SOT_SYNC_ERR_1 BIT(1)
> +#define MIPI_CSI2_INT_STA0_REG_SOT_SYNC_ERR_0 BIT(0)
> +
> +#define MIPI_CSI2_INT_STA1_REG (MIPI_CSI2_OFFSET + 0x024)
> +#define MIPI_CSI2_INT_STA1_REG_LINE_SEQ_ERR_DT7 BIT(23)
> +#define MIPI_CSI2_INT_STA1_REG_LINE_SEQ_ERR_DT6 BIT(22)
> +#define MIPI_CSI2_INT_STA1_REG_LINE_SEQ_ERR_DT5 BIT(21)
> +#define MIPI_CSI2_INT_STA1_REG_LINE_SEQ_ERR_DT4 BIT(20)
> +#define MIPI_CSI2_INT_STA1_REG_LS_LE_ERR_DT7 BIT(19)
> +#define MIPI_CSI2_INT_STA1_REG_LS_LE_ERR_DT6 BIT(18)
> +#define MIPI_CSI2_INT_STA1_REG_LS_LE_ERR_DT5 BIT(17)
> +#define MIPI_CSI2_INT_STA1_REG_LS_LE_ERR_DT4 BIT(16)
> +#define MIPI_CSI2_INT_STA1_REG_DT_ERR_VC3 BIT(15)
> +#define MIPI_CSI2_INT_STA1_REG_DT_ERR_VC2 BIT(14)
> +#define MIPI_CSI2_INT_STA1_REG_DT_ERR_VC1 BIT(13)
> +#define MIPI_CSI2_INT_STA1_REG_DT_ERR_VC0 BIT(12)
> +#define MIPI_CSI2_INT_STA1_REG_ECC_ERR1_VC3 BIT(11)
> +#define MIPI_CSI2_INT_STA1_REG_ECC_ERR1_VC2 BIT(10)
> +#define MIPI_CSI2_INT_STA1_REG_ECC_ERR1_VC1 BIT(9)
> +#define MIPI_CSI2_INT_STA1_REG_ECC_ERR1_VC0 BIT(8)
> +#define MIPI_CSI2_INT_STA1_REG_SOT_ERR_3 BIT(7)
> +#define MIPI_CSI2_INT_STA1_REG_SOT_ERR_2 BIT(6)
> +#define MIPI_CSI2_INT_STA1_REG_SOT_ERR_1 BIT(5)
> +#define MIPI_CSI2_INT_STA1_REG_SOT_ERR_0 BIT(4)
> +#define MIPI_CSI2_INT_STA1_REG_ESC_ENTRY_ERR_3 BIT(3)
> +#define MIPI_CSI2_INT_STA1_REG_ESC_ENTRY_ERR_2 BIT(2)
> +#define MIPI_CSI2_INT_STA1_REG_ESC_ENTRY_ERR_1 BIT(1)
> +#define MIPI_CSI2_INT_STA1_REG_ESC_ENTRY_ERR_0 BIT(0)
> +
> +#define MIPI_CSI2_INT_MSK0_REG (MIPI_CSI2_OFFSET + 0x028)
> +#define MIPI_CSI2_INT_MSK0_REG_ECC_ERR_DBL_MSK BIT(28)
> +#define MIPI_CSI2_INT_MSK0_REG_CKSM_ERR_VC3_MSK BIT(27)
> +#define MIPI_CSI2_INT_MSK0_REG_CKSM_ERR_VC2_MSK BIT(26)
> +#define MIPI_CSI2_INT_MSK0_REG_CKSM_ERR_VC1_MSK BIT(25)
> +#define MIPI_CSI2_INT_MSK0_REG_CKSM_ERR_VC0_MSK BIT(24)
> +#define MIPI_CSI2_INT_MSK0_REG_LINE_SEQ_ERR_DT3_MSK BIT(23)
> +#define MIPI_CSI2_INT_MSK0_REG_LINE_SEQ_ERR_DT2_MSK BIT(22)
> +#define MIPI_CSI2_INT_MSK0_REG_LINE_SEQ_ERR_DT1_MSK BIT(21)
> +#define MIPI_CSI2_INT_MSK0_REG_LINE_SEQ_ERR_DT0_MSK BIT(20)
> +#define MIPI_CSI2_INT_MSK0_REG_LS_LE_ERR_DT3_MSK BIT(19)
> +#define MIPI_CSI2_INT_MSK0_REG_LS_LE_ERR_DT2_MSK BIT(18)
> +#define MIPI_CSI2_INT_MSK0_REG_LS_LE_ERR_DT1_MSK BIT(17)
> +#define MIPI_CSI2_INT_MSK0_REG_LS_LE_ERR_DT0_MSK BIT(16)
> +#define MIPI_CSI2_INT_MSK0_REG_CRC_ERR_VC3_MSK BIT(15)
> +#define MIPI_CSI2_INT_MSK0_REG_CRC_ERR_VC2_MSK BIT(14)
> +#define MIPI_CSI2_INT_MSK0_REG_CRC_ERR_VC1_MSK BIT(13)
> +#define MIPI_CSI2_INT_MSK0_REG_CRC_ERR_VC0_MSK BIT(12)
> +#define MIPI_CSI2_INT_MSK0_REG_FRM_SEQ_ERR_VC3_MSK BIT(11)
> +#define MIPI_CSI2_INT_MSK0_REG_FRM_SEQ_ERR_VC2_MSK BIT(10)
> +#define MIPI_CSI2_INT_MSK0_REG_FRM_SEQ_ERR_VC1_MSK BIT(9)
> +#define MIPI_CSI2_INT_MSK0_REG_FRM_SEQ_ERR_VC0_MSK BIT(8)
> +#define MIPI_CSI2_INT_MSK0_REG_FS_FE_ERR_VC3_MSK BIT(7)
> +#define MIPI_CSI2_INT_MSK0_REG_FS_FE_ERR_VC2_MSK BIT(6)
> +#define MIPI_CSI2_INT_MSK0_REG_FS_FE_ERR_VC1_MSK BIT(5)
> +#define MIPI_CSI2_INT_MSK0_REG_FS_FE_ERR_VC0_MSK BIT(4)
> +#define MIPI_CSI2_INT_MSK0_REG_SOT_SYNC_ERR_3_MSK BIT(3)
> +#define MIPI_CSI2_INT_MSK0_REG_SOT_SYNC_ERR_2_MSK BIT(2)
> +#define MIPI_CSI2_INT_MSK0_REG_SOT_SYNC_ERR_1_MSK BIT(1)
> +#define MIPI_CSI2_INT_MSK0_REG_SOT_SYNC_ERR_0_MSK BIT(0)
> +
> +#define MIPI_CSI2_INT_MSK1_REG (MIPI_CSI2_OFFSET + 0x02c)
> +#define MIPI_CSI2_INT_MSK1_REG_DT_ERR_VC3_MSK BIT(15)
> +#define MIPI_CSI2_INT_MSK1_REG_DT_ERR_VC2_MSK BIT(14)
> +#define MIPI_CSI2_INT_MSK1_REG_DT_ERR_VC1_MSK BIT(13)
> +#define MIPI_CSI2_INT_MSK1_REG_DT_ERR_VC0_MSK BIT(12)
> +#define MIPI_CSI2_INT_MSK1_REG_ECC_ERR1_VC3_MSK BIT(11)
> +#define MIPI_CSI2_INT_MSK1_REG_ECC_ERR1_VC2_MSK BIT(10)
> +#define MIPI_CSI2_INT_MSK1_REG_ECC_ERR1_VC1_MSK BIT(9)
> +#define MIPI_CSI2_INT_MSK1_REG_ECC_ERR1_VC0_MSK BIT(8)
> +#define MIPI_CSI2_INT_MSK1_REG_SOT_ERR_3_MSK BIT(7)
> +#define MIPI_CSI2_INT_MSK1_REG_SOT_ERR_2_MSK BIT(6)
> +#define MIPI_CSI2_INT_MSK1_REG_SOT_ERR_1_MSK BIT(5)
> +#define MIPI_CSI2_INT_MSK1_REG_SOT_ERR_0_MSK BIT(4)
> +#define MIPI_CSI2_INT_MSK1_REG_ESC_ENTRY_ERR_3_MSK BIT(3)
> +#define MIPI_CSI2_INT_MSK1_REG_ESC_ENTRY_ERR_2_MSK BIT(2)
> +#define MIPI_CSI2_INT_MSK1_REG_ESC_ENTRY_ERR_1_MSK BIT(1)
> +#define MIPI_CSI2_INT_MSK1_REG_ESC_ENTRY_ERR_0_MSK BIT(0)
> +
> +#define MIPI_CSI2_CFG_REG (MIPI_CSI2_OFFSET + 0x100)
> +#define MIPI_CSI2_CFG_REG_SYNC_EN BIT(31)
> +#define MIPI_CSI2_CFG_REG_BYPASS_ECC_EN BIT(29)
> +#define MIPI_CSI2_CFG_REG_UNPKT_EN BIT(28)
> +#define MIPI_CSI2_CFG_REG_NONE_UNPKT_RX_MODE BIT(27)
> +#define MIPI_CSI2_CFG_REG_YC_SWAB BIT(26)
> +#define MIPI_CSI2_CFG_REG_N_BYTE BIT(24)
> +#define MIPI_CSI2_CFG_REG_SYNC_DLY_CYCLE(v) ((v) << 18)
> +#define MIPI_CSI2_CFG_REG_SYNC_DLY_CYCLE_MASK GENMASK(22, 18)
> +#define MIPI_CSI2_CFG_REG_N_CHANNEL_MASK GENMASK(17, 16)
> +#define MIPI_CSI2_CFG_REG_N_CHANNEL_SHIFT 16
> +#define MIPI_CSI2_CFG_REG_N_LANE_MASK GENMASK(5, 4)
> +#define MIPI_CSI2_CFG_REG_N_LANE_SHIFT 4
> +
> +#define MIPI_CSI2_VCDT0_REG (MIPI_CSI2_OFFSET + 0x104)
> +#define MIPI_CSI2_VCDT0_REG_DEFAULT 0xc0804000
> +#define MIPI_CSI2_VCDT0_REG_CH3_VC_MASK GENMASK(31, 30)
> +#define MIPI_CSI2_VCDT0_REG_CH3_VC_SHIFT 30
> +#define MIPI_CSI2_VCDT0_REG_CH3_DT_MASK GENMASK(29, 24)
> +#define MIPI_CSI2_VCDT0_REG_CH3_DT_SHIFT 24
> +#define MIPI_CSI2_VCDT0_REG_CH2_VC_MASK GENMASK(23, 22)
> +#define MIPI_CSI2_VCDT0_REG_CH2_VC_SHIFT 22
> +#define MIPI_CSI2_VCDT0_REG_CH2_DT_MASK GENMASK(21, 16)
> +#define MIPI_CSI2_VCDT0_REG_CH2_DT_SHIFT 16
> +#define MIPI_CSI2_VCDT0_REG_CH1_VC_MASK GENMASK(15, 14)
> +#define MIPI_CSI2_VCDT0_REG_CH1_VC_SHIFT 14
> +#define MIPI_CSI2_VCDT0_REG_CH1_DT_MASK GENMASK(13, 8)
> +#define MIPI_CSI2_VCDT0_REG_CH1_DT_SHIFT 8
> +#define MIPI_CSI2_VCDT0_REG_CH0_VC_MASK GENMASK(7, 6)
> +#define MIPI_CSI2_VCDT0_REG_CH0_VC_SHIFT 6
> +#define MIPI_CSI2_VCDT0_REG_CH0_DT_MASK GENMASK(5, 0)
> +
> +#define MIPI_CSI2_VCDT1_REG (MIPI_CSI2_OFFSET + 0x108)
> +#define MIPI_CSI2_VCDT1_REG_CH7_VC_MASK GENMASK(31, 30)
> +#define MIPI_CSI2_VCDT1_REG_CH7_DT_MASK GENMASK(29, 24)
> +#define MIPI_CSI2_VCDT1_REG_CH6_VC_MASK GENMASK(23, 22)
> +#define MIPI_CSI2_VCDT1_REG_CH6_DT_MASK GENMASK(21, 16)
> +#define MIPI_CSI2_VCDT1_REG_CH5_VC_MASK GENMASK(15, 14)
> +#define MIPI_CSI2_VCDT1_REG_CH5_DT_MASK GENMASK(13, 8)
> +#define MIPI_CSI2_VCDT1_REG_CH4_VC_MASK GENMASK(7, 6)
> +#define MIPI_CSI2_VCDT1_REG_CH4_DT_MASK GENMASK(5, 0)
> +
> +#endif /* __SUN8I_A83T_MIPI_CSI2_REG_H__ */
--
Kind regards,
Sakari Ailus
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