Am Samstag, den 07.06.2014, 14:56 -0700 schrieb Steve Longerbeam:
> Adds the following new IPU units:
>
> - Camera Sensor Interface (csi)
> - Sensor Multi FIFO Controller (smfc)
> - Image Converter (ic)
> - Image Rotator (irt)
>
> Signed-off-by: Steve Longerbeam <steve_longerb...@mentor.com>
> ---
> drivers/staging/imx-drm/ipu-v3/Makefile | 3 +-
> drivers/staging/imx-drm/ipu-v3/ipu-common.c | 67 ++-
> drivers/staging/imx-drm/ipu-v3/ipu-csi.c | 821 ++++++++++++++++++++++++++
> drivers/staging/imx-drm/ipu-v3/ipu-ic.c | 835
> +++++++++++++++++++++++++++
> drivers/staging/imx-drm/ipu-v3/ipu-irt.c | 103 ++++
> drivers/staging/imx-drm/ipu-v3/ipu-prv.h | 24 +
> drivers/staging/imx-drm/ipu-v3/ipu-smfc.c | 348 +++++++++++
> include/linux/platform_data/imx-ipu-v3.h | 151 +++++
You are broadening the internal API quite a bit. For the IC and IRT that
certainly can't be helped, but the CSI could very well be completely
encapsulated in a v4l2_subdev. I wonder if it wouldn't be better to move
the CSI code into the drivers/media part.
> 8 files changed, 2350 insertions(+), 2 deletions(-)
> create mode 100644 drivers/staging/imx-drm/ipu-v3/ipu-csi.c
> create mode 100644 drivers/staging/imx-drm/ipu-v3/ipu-ic.c
> create mode 100644 drivers/staging/imx-drm/ipu-v3/ipu-irt.c
> create mode 100644 drivers/staging/imx-drm/ipu-v3/ipu-smfc.c
>
> diff --git a/drivers/staging/imx-drm/ipu-v3/Makefile
> b/drivers/staging/imx-drm/ipu-v3/Makefile
> index 28ed72e..79c0c88 100644
> --- a/drivers/staging/imx-drm/ipu-v3/Makefile
> +++ b/drivers/staging/imx-drm/ipu-v3/Makefile
> @@ -1,3 +1,4 @@
> obj-$(CONFIG_DRM_IMX_IPUV3_CORE) += imx-ipu-v3.o
>
> -imx-ipu-v3-objs := ipu-common.o ipu-dc.o ipu-di.o ipu-dp.o ipu-dmfc.o
> +imx-ipu-v3-objs := ipu-common.o ipu-csi.o ipu-dc.o ipu-di.o \
> + ipu-dp.o ipu-dmfc.o ipu-ic.o ipu-irt.o ipu-smfc.o
> diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-common.c
> b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
> index 1c606b5..3d7e28d 100644
> --- a/drivers/staging/imx-drm/ipu-v3/ipu-common.c
> +++ b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
> @@ -834,6 +834,10 @@ struct ipu_devtype {
> unsigned long cpmem_ofs;
> unsigned long srm_ofs;
> unsigned long tpm_ofs;
> + unsigned long csi0_ofs;
> + unsigned long csi1_ofs;
> + unsigned long smfc_ofs;
> + unsigned long ic_ofs;
> unsigned long disp0_ofs;
> unsigned long disp1_ofs;
> unsigned long dc_tmpl_ofs;
> @@ -873,8 +877,12 @@ static struct ipu_devtype ipu_type_imx6q = {
> .cpmem_ofs = 0x00300000,
> .srm_ofs = 0x00340000,
> .tpm_ofs = 0x00360000,
> + .csi0_ofs = 0x00230000,
> + .csi1_ofs = 0x00238000,
> .disp0_ofs = 0x00240000,
> .disp1_ofs = 0x00248000,
> + .smfc_ofs = 0x00250000,
> + .ic_ofs = 0x00220000,
> .dc_tmpl_ofs = 0x00380000,
> .vdi_ofs = 0x00268000,
> .type = IPUV3H,
This is missing the initalization for i.MX5.
[...]
> +#define GPR1_IPU_CSI_MUX_CTL_SHIFT 19
> +#define GPR13_IPUV3HDL_CSI_MUX_CTL_SHIFT 0
> +
> +int ipu_csi_set_src(struct ipu_csi *csi, u32 vc, bool select_mipi_csi2)
> +{
> + struct ipu_soc *ipu = csi->ipu;
> + int ipu_id = ipu_get_num(ipu);
> + u32 val, bit;
> +
> + /*
> + * Set the muxes that choose between mipi-csi2 and parallel inputs
> + * to the CSI's.
> + */
> + if (csi->ipu->ipu_type == IPUV3HDL) {
> + /*
> + * On D/L, the mux is in GPR13. The TRM is unclear,
> + * but it appears the mux allows selecting the MIPI
> + * CSI-2 virtual channel number to route to the CSIs.
> + */
> + bit = GPR13_IPUV3HDL_CSI_MUX_CTL_SHIFT + csi->id * 3;
> + val = select_mipi_csi2 ? vc << bit : 4 << bit;
> + regmap_update_bits(ipu->gp_reg, IOMUXC_GPR13,
> + 0x7 << bit, val);
> + } else if (csi->ipu->ipu_type == IPUV3H) {
> + /*
> + * For Q/D, the mux only exists on IPU0-CSI0 and IPU1-CSI1,
> + * and the routed virtual channel numbers are fixed at 0 and
> + * 3 respectively.
> + */
> + if ((ipu_id == 0 && csi->id == 0) ||
> + (ipu_id == 1 && csi->id == 1)) {
> + bit = GPR1_IPU_CSI_MUX_CTL_SHIFT + csi->ipu->id;
> + val = select_mipi_csi2 ? 0 : 1 << bit;
> + regmap_update_bits(ipu->gp_reg, IOMUXC_GPR1,
> + 0x1 << bit, val);
> + }
> + } else {
> + dev_err(csi->ipu->dev,
> + "ERROR: %s: unsupported CPU version!\n",
> + __func__);
> + return -EINVAL;
> + }
> +
> + /*
> + * there is another mux in the IPU config register that
> + * must be set as well
> + */
> + ipu_set_csi_src_mux(ipu, csi->id, select_mipi_csi2);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(ipu_csi_set_src);
In my opinion, this doesn't belong here. These multiplexers should be
separate subdevices described in the device tree.
[...]
> +int ipu_csi_get_sensor_protocol(struct ipu_csi *csi)
> +bool ipu_csi_is_interlaced(struct ipu_csi *csi)
> +void ipu_csi_get_window_size(struct ipu_csi *csi, u32 *width, u32 *height)
> +void ipu_csi_set_window_size(struct ipu_csi *csi, u32 width, u32 height)
> +void ipu_csi_set_window_pos(struct ipu_csi *csi, u32 left, u32 top)
> +void ipu_csi_horizontal_downsize_enable(struct ipu_csi *csi)
> +void ipu_csi_horizontal_downsize_disable(struct ipu_csi *csi)
> +void ipu_csi_vertical_downsize_enable(struct ipu_csi *csi)
> +void ipu_csi_vertical_downsize_disable(struct ipu_csi *csi)
> +void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,
> + u32 r_value, u32 g_value, u32 b_value,
> + u32 pix_clk)
> +int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc,
> + struct ipu_csi_signal_cfg *cfg)
> +int ipu_csi_set_skip_isp(struct ipu_csi *csi, u32 skip, u32 max_ratio)
> +int ipu_csi_set_skip_smfc(struct ipu_csi *csi, u32 skip,
> + u32 max_ratio, u32 id)
> +int ipu_csi_set_dest(struct ipu_csi *csi, bool ic)
All of these are small wrappers around register access, making them
ideal candidates for being inlined if included in the driver using
them ...
> +int ipu_csi_get_num(struct ipu_csi *csi)
> +{
> + return csi->id;
> +}
> +EXPORT_SYMBOL_GPL(ipu_csi_get_num);
... and this could be dropped completely.
[...]
> +static int init_csc(struct ipu_ic *ic,
> + enum ipu_color_space in_format,
> + enum ipu_color_space out_format,
> + int csc_index)
> +{
> + struct ipu_ic_priv *priv = ic->priv;
> + u32 __iomem *base;
> + u32 param;
> +
> + base = (u32 __iomem *)
> + (priv->tpmem_base + ic->reg->tpmem_csc[csc_index]);
> +
> + if (in_format == IPUV3_COLORSPACE_YUV &&
> + out_format == IPUV3_COLORSPACE_RGB) {
> + /* Init CSC (YCbCr->RGB) */
> + param = (ycbcr2rgb_coeff[3][0] << 27) |
> + (ycbcr2rgb_coeff[0][0] << 18) |
> + (ycbcr2rgb_coeff[1][1] << 9) |
> + ycbcr2rgb_coeff[2][2];
> + writel(param, base++);
> +
> + /* scale = 2, sat = 0 */
> + param = (ycbcr2rgb_coeff[3][0] >> 5) |
> + (2L << (40 - 32));
> + writel(param, base++);
> +
> + param = (ycbcr2rgb_coeff[3][1] << 27) |
> + (ycbcr2rgb_coeff[0][1] << 18) |
> + (ycbcr2rgb_coeff[1][0] << 9) |
> + ycbcr2rgb_coeff[2][0];
> + writel(param, base++);
> +
> + param = (ycbcr2rgb_coeff[3][1] >> 5);
> + writel(param, base++);
> +
> + param = (ycbcr2rgb_coeff[3][2] << 27) |
> + (ycbcr2rgb_coeff[0][2] << 18) |
> + (ycbcr2rgb_coeff[1][2] << 9) |
> + ycbcr2rgb_coeff[2][1];
> + writel(param, base++);
> +
> + param = (ycbcr2rgb_coeff[3][2] >> 5);
> + writel(param, base++);
This should be split out into a helper function ...
> + } else if (in_format == IPUV3_COLORSPACE_RGB &&
> + out_format == IPUV3_COLORSPACE_YUV) {
> + /* Init CSC (RGB->YCbCr) */
> + param = (rgb2ycbcr_coeff[3][0] << 27) |
> + (rgb2ycbcr_coeff[0][0] << 18) |
> + (rgb2ycbcr_coeff[1][1] << 9) |
> + rgb2ycbcr_coeff[2][2];
> + writel(param, base++);
> +
> + /* scale = 1, sat = 0 */
> + param = (rgb2ycbcr_coeff[3][0] >> 5) | (1UL << 8);
> + writel(param, base++);
> +
> + param = (rgb2ycbcr_coeff[3][1] << 27) |
> + (rgb2ycbcr_coeff[0][1] << 18) |
> + (rgb2ycbcr_coeff[1][0] << 9) |
> + rgb2ycbcr_coeff[2][0];
> + writel(param, base++);
> +
> + param = (rgb2ycbcr_coeff[3][1] >> 5);
> + writel(param, base++);
> +
> + param = (rgb2ycbcr_coeff[3][2] << 27) |
> + (rgb2ycbcr_coeff[0][2] << 18) |
> + (rgb2ycbcr_coeff[1][2] << 9) |
> + rgb2ycbcr_coeff[2][1];
> + writel(param, base++);
> +
> + param = (rgb2ycbcr_coeff[3][2] >> 5);
> + writel(param, base++);
... and be reused here ...
> + } else if (in_format == IPUV3_COLORSPACE_RGB &&
> + out_format == IPUV3_COLORSPACE_RGB) {
> + /* Init CSC */
> + param = (rgb2rgb_coeff[3][0] << 27) |
> + (rgb2rgb_coeff[0][0] << 18) |
> + (rgb2rgb_coeff[1][1] << 9) |
> + rgb2rgb_coeff[2][2];
> + writel(param, base++);
> +
> + /* scale = 2, sat = 0 */
> + param = (rgb2rgb_coeff[3][0] >> 5) | (2UL << 8);
> + writel(param, base++);
> +
> + param = (rgb2rgb_coeff[3][1] << 27) |
> + (rgb2rgb_coeff[0][1] << 18) |
> + (rgb2rgb_coeff[1][0] << 9) |
> + rgb2rgb_coeff[2][0];
> + writel(param, base++);
> +
> + param = (rgb2rgb_coeff[3][1] >> 5);
> + writel(param, base++);
> +
> + param = (rgb2rgb_coeff[3][2] << 27) |
> + (rgb2rgb_coeff[0][2] << 18) |
> + (rgb2rgb_coeff[1][2] << 9) |
> + rgb2rgb_coeff[2][1];
> + writel(param, base++);
> +
> + param = (rgb2rgb_coeff[3][2] >> 5);
> + writel(param, base++);
... and here.
> + } else {
> + dev_err(priv->ipu->dev, "Unsupported color space conversion\n");
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
[...]
> diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-irt.c
> b/drivers/staging/imx-drm/ipu-v3/ipu-irt.c
This whole file just contains a use count and and module enable/disable
wrappers. I believe this is simple enough to be included in ipu-common.
[...]
> diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-smfc.c
> b/drivers/staging/imx-drm/ipu-v3/ipu-smfc.c
This is mostly included in drm-next already. It would be great if you
could rebase on that.
regards
Philipp
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