On Sat, Jun 07, 2014 at 02:56:10PM -0700, Steve Longerbeam wrote:
> 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 <[email protected]>
> ---
> 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 +++++
> 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,
> @@ -915,8 +923,44 @@ static int ipu_submodules_init(struct ipu_soc *ipu,
> struct device *dev = &pdev->dev;
> const struct ipu_devtype *devtype = ipu->devtype;
>
> + ret = ipu_csi_init(ipu, dev, 0, ipu_base + devtype->csi0_ofs,
> + IPU_CONF_CSI0_EN, ipu_clk);
> + if (ret) {
> + unit = "csi0";
> + goto err_csi_0;
> + }
Please be nice to other SoCs. You set csi0_ofs for i.MX6, but not for
i.MX5. For i.MX5 you silently initialize the CSI with bogus register
offsets. Either test for _ofs == 0 before initializing it or add the
correct values for i.MX51/53 (preferred).
> +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);
This is not a property of the IPU but how the IPU is integrated into the
SoC. I'm unsure this should be integrated like this, it sounds more like
a job for mediactrl.
> +#include <linux/types.h>
> +#include <linux/init.h>
> +#include <linux/errno.h>
> +#include <linux/spinlock.h>
> +#include <linux/videodev2.h>
> +#include <linux/bitrev.h>
> +#include <linux/io.h>
> +#include <linux/err.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/clkdev.h>
Please clean up the include list. There is nothing used from
clk-provider.h for example.
> +static int init_csc(struct ipu_ic *ic,
> + enum ipu_color_space in_format,
> + enum ipu_color_space out_format,
> + int csc_index);
> +static int calc_resize_coeffs(struct ipu_ic *ic,
> + u32 in_size, u32 out_size,
> + u32 *resize_coeff,
> + u32 *downsize_coeff);
Please reorder functions to get rid of static function declarations.
Sascha
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