Thank you for these comments too.
My responses inlined.
-Manju
On Fri, Sep 02, 2011 at 02:53:08, Sylwester Nawrocki wrote:
> Hi Manjunath,
>
> few more comments below..
>
> On 08/29/2011 05:07 PM, Manjunath Hadli wrote:
> > add support for ccdc on dm365 SoC. ccdc is responsible for capturing
> > video data- both raw bayer through sync seperate signals and through
> > BT656/1120 interfaces. This driver implements the hardware
> > functionality. Mainly- setting of hardware, validation of parameters,
> > and isr configuration.
> >
> > Signed-off-by: Manjunath Hadli<manjunath.hadli@xxxxxx>
> > Signed-off-by: Nagabhushana Netagunte<nagabhushana.netagunte@xxxxxx>
> > ---
> > drivers/media/video/davinci/ccdc_types.h | 43 +
> > drivers/media/video/davinci/dm365_ccdc.c | 1519 +++++++++++++++++++++++++
> > drivers/media/video/davinci/dm365_ccdc.h | 88 ++
> > drivers/media/video/davinci/dm365_ccdc_regs.h | 309 +++++
> > include/linux/dm365_ccdc.h | 664 +++++++++++
> > 5 files changed, 2623 insertions(+), 0 deletions(-)
> > create mode 100644 drivers/media/video/davinci/ccdc_types.h
> > create mode 100644 drivers/media/video/davinci/dm365_ccdc.c
> > create mode 100644 drivers/media/video/davinci/dm365_ccdc.h
> > create mode 100644 drivers/media/video/davinci/dm365_ccdc_regs.h
> > create mode 100644 include/linux/dm365_ccdc.h
> ...
> > +#define CCDC_LINEAR_LUT0_ADDR 0x1c7c000
> > +#define CCDC_LINEAR_LUT1_ADDR 0x1c7c400
> > +
> > +/* Masks& Shifts below */
> > +#define START_PX_HOR_MASK (0x7fff)
> > +#define NUM_PX_HOR_MASK (0x7fff)
> > +#define START_VER_ONE_MASK (0x7fff)
> > +#define START_VER_TWO_MASK (0x7fff)
> > +#define NUM_LINES_VER (0x7fff)
> > +
> > +/* gain - offset masks */
> > +#define GAIN_INTEGER_MASK (0x7)
> > +#define GAIN_INTEGER_SHIFT (0x9)
> > +#define GAIN_DECIMAL_MASK (0x1ff)
> > +#define OFFSET_MASK (0xfff)
> > +#define GAIN_SDRAM_EN_SHIFT (12)
> > +#define GAIN_IPIPE_EN_SHIFT (13)
> > +#define GAIN_H3A_EN_SHIFT (14)
> > +#define OFST_SDRAM_EN_SHIFT (8)
> > +#define OFST_IPIPE_EN_SHIFT (9)
> > +#define OFST_H3A_EN_SHIFT (10)
> > +#define GAIN_OFFSET_EN_MASK (0x7700)
> > +
> > +/* Culling */
> > +#define CULL_PAT_EVEN_LINE_SHIFT (8)
> > +
> > +/* CCDCFG register */
> > +#define CCDC_YCINSWP_RAW (0x00<< 4)
> > +#define CCDC_YCINSWP_YCBCR (0x01<< 4)
> > +#define CCDC_CCDCFG_FIDMD_LATCH_VSYNC (0x00<< 6)
> > +#define CCDC_CCDCFG_WENLOG_AND (0x00<< 8)
> > +#define CCDC_CCDCFG_TRGSEL_WEN (0x00<< 9)
> > +#define CCDC_CCDCFG_EXTRG_DISABLE (0x00<< 10)
> > +#define CCDC_LATCH_ON_VSYNC_DISABLE (0x01<< 15)
> > +#define CCDC_LATCH_ON_VSYNC_ENABLE (0x00<< 15)
> > +#define CCDC_DATA_PACK_MASK (0x03)
> > +#define CCDC_DATA_PACK16 (0x0)
> > +#define CCDC_DATA_PACK12 (0x1)
> > +#define CCDC_DATA_PACK8 (0x2)
> > +#define CCDC_PIX_ORDER_SHIFT (11)
> > +#define CCDC_PIX_ORDER_MASK (0x01)
> > +#define CCDC_BW656_ENABLE (0x01<< 5)
> > +
> > +/* MODESET registers */
> > +#define CCDC_VDHDOUT_INPUT (0x00<< 0)
> > +#define CCDC_INPUT_MASK (0x03)
> > +#define CCDC_INPUT_SHIFT (12)
> > +#define CCDC_RAW_INPUT_MODE (0x00)
> > +#define CCDC_FID_POL_MASK (0x01)
> > +#define CCDC_FID_POL_SHIFT (4)
> > +#define CCDC_HD_POL_MASK (0x01)
> > +#define CCDC_HD_POL_SHIFT (3)
> > +#define CCDC_VD_POL_MASK (0x01)
> > +#define CCDC_VD_POL_SHIFT (2)
> > +#define CCDC_DATAPOL_NORMAL (0x00)
> > +#define CCDC_DATAPOL_MASK (0x01)
> > +#define CCDC_DATAPOL_SHIFT (6)
> > +#define CCDC_EXWEN_DISABLE (0x00)
> > +#define CCDC_EXWEN_MASK (0x01)
> > +#define CCDC_EXWEN_SHIFT (5)
> > +#define CCDC_FRM_FMT_MASK (0x01)
> > +#define CCDC_FRM_FMT_SHIFT (7)
> > +#define CCDC_DATASFT_MASK (0x07)
> > +#define CCDC_DATASFT_SHIFT (8)
> > +#define CCDC_LPF_SHIFT (14)
> > +#define CCDC_LPF_MASK (0x1)
> > +
> > +/* GAMMAWD registers */
> > +#define CCDC_ALAW_GAMA_WD_MASK (0xf)
> > +#define CCDC_ALAW_GAMA_WD_SHIFT (1)
> > +#define CCDC_ALAW_ENABLE (0x01)
> > +#define CCDC_GAMMAWD_CFA_MASK (0x01)
> > +#define CCDC_GAMMAWD_CFA_SHIFT (5)
> > +
> > +/* HSIZE registers */
> > +#define CCDC_HSIZE_FLIP_MASK (0x01)
> > +#define CCDC_HSIZE_FLIP_SHIFT (12)
> > +#define CCDC_LINEOFST_MASK (0xfff)
> > +
> > +/* MISC registers */
> > +#define CCDC_DPCM_EN_SHIFT (12)
> > +#define CCDC_DPCM_EN_MASK (1)
> > +#define CCDC_DPCM_PREDICTOR_SHIFT (13)
> > +#define CCDC_DPCM_PREDICTOR_MASK (1)
> > +
> > +/* Black clamp related */
> > +#define CCDC_BC_DCOFFSET_MASK (0x1fff)
> > +#define CCDC_BC_MODE_COLOR_MASK (1)
> > +#define CCDC_BC_MODE_COLOR_SHIFT (4)
> > +#define CCDC_HORZ_BC_MODE_MASK (3)
> > +#define CCDC_HORZ_BC_MODE_SHIFT (1)
> > +#define CCDC_HORZ_BC_WIN_COUNT_MASK (0x1f)
> > +#define CCDC_HORZ_BC_WIN_SEL_SHIFT (5)
> > +#define CCDC_HORZ_BC_PIX_LIMIT_SHIFT (6)
> > +#define CCDC_HORZ_BC_WIN_H_SIZE_MASK (3)
> > +#define CCDC_HORZ_BC_WIN_H_SIZE_SHIFT (8)
> > +#define CCDC_HORZ_BC_WIN_V_SIZE_MASK (3)
> > +#define CCDC_HORZ_BC_WIN_V_SIZE_SHIFT (12)
> > +#define CCDC_HORZ_BC_WIN_START_H_MASK (0x1fff)
> > +#define CCDC_HORZ_BC_WIN_START_V_MASK (0x1fff)
> > +#define CCDC_VERT_BC_OB_H_SZ_MASK (7)
> > +#define CCDC_VERT_BC_RST_VAL_SEL_MASK (3)
> > +#define CCDC_VERT_BC_RST_VAL_SEL_SHIFT (4)
> > +#define CCDC_VERT_BC_LINE_AVE_COEF_SHIFT (8)
> > +#define CCDC_VERT_BC_OB_START_HORZ_MASK (0x1fff)
> > +#define CCDC_VERT_BC_OB_START_VERT_MASK (0x1fff)
> > +#define CCDC_VERT_BC_OB_VERT_SZ_MASK (0x1fff)
> > +#define CCDC_VERT_BC_RST_VAL_MASK (0xfff)
> > +#define CCDC_BC_VERT_START_SUB_V_MASK (0x1fff)
> > +
> > +/* VDFC registers */
> > +#define CCDC_VDFC_EN_SHIFT (4)
> > +#define CCDC_VDFC_CORR_MOD_MASK (3)
> > +#define CCDC_VDFC_CORR_MOD_SHIFT (5)
> > +#define CCDC_VDFC_CORR_WHOLE_LN_SHIFT (7)
> > +#define CCDC_VDFC_LEVEL_SHFT_MASK (7)
> > +#define CCDC_VDFC_LEVEL_SHFT_SHIFT (8)
> > +#define CCDC_VDFC_SAT_LEVEL_MASK (0xfff)
> > +#define CCDC_VDFC_POS_MASK (0x1fff)
> > +#define CCDC_DFCMEMCTL_DFCMARST_SHIFT (2)
> > +
> > +/* CSC registers */
> > +#define CCDC_CSC_COEF_INTEG_MASK (7)
> > +#define CCDC_CSC_COEF_DECIMAL_MASK (0x1f)
> > +#define CCDC_CSC_COEF_INTEG_SHIFT (5)
> > +#define CCDC_CSCM_MSB_SHIFT (8)
> > +#define CCDC_DF_CSC_SPH_MASK (0x1fff)
> > +#define CCDC_DF_CSC_LNH_MASK (0x1fff)
> > +#define CCDC_DF_CSC_SLV_MASK (0x1fff)
> > +#define CCDC_DF_CSC_LNV_MASK (0x1fff)
> > +#define CCDC_DF_NUMLINES (0x7fff)
> > +#define CCDC_DF_NUMPIX (0x1fff)
> > +
> > +/* Offsets for LSC/DFC/Gain */
> > +#define CCDC_DATA_H_OFFSET_MASK (0x1fff)
> > +#define CCDC_DATA_V_OFFSET_MASK (0x1fff)
> > +
> > +/* Linearization */
> > +#define CCDC_LIN_CORRSFT_MASK (7)
> > +#define CCDC_LIN_CORRSFT_SHIFT (4)
> > +#define CCDC_LIN_SCALE_FACT_INTEG_SHIFT (10)
> > +#define CCDC_LIN_SCALE_FACT_DECIMAL_MASK (0x3ff)
> > +#define CCDC_LIN_ENTRY_MASK (0x3ff)
> > +
> > +#define CCDC_DF_FMTRLEN_MASK (0x1fff)
> > +#define CCDC_DF_FMTHCNT_MASK (0x1fff)
> > +
> > +/* Pattern registers */
> > +#define CCDC_PG_EN (1<< 3)
> > +#define CCDC_SEL_PG_SRC (3<< 4)
> > +#define CCDC_PG_VD_POL_SHIFT (0)
> > +#define CCDC_PG_HD_POL_SHIFT (1)
> > +
> > +/*masks and shifts*/
> > +#define CCDC_SYNCEN_VDHDEN_MASK (1<< 0)
> > +#define CCDC_SYNCEN_WEN_MASK (1<< 1)
> > +#define CCDC_SYNCEN_WEN_SHIFT 1
> > +
> > +#endif
> > diff --git a/include/linux/dm365_ccdc.h b/include/linux/dm365_ccdc.h
> > new file mode 100644 index 0000000..4e50529
> > --- /dev/null
> > +++ b/include/linux/dm365_ccdc.h
> > @@ -0,0 +1,664 @@
> ...
> > +#define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', 1, \
> > + struct ccdc_config_params_raw)
> > +#define VPFE_CMD_G_CCDC_RAW_PARAMS _IOR('V', 2, \
> > + struct ccdc_config_params_raw)
> > +/**
> > + * ccdc float type S8Q8/U8Q8
> > + */
> > +struct ccdc_float_8 {
> > + /* 8 bit integer part */
> > + unsigned char integer;
> > + /* 8 bit decimal part */
> > + unsigned char decimal;
> > +};
>
> Isn't it better to use explicit width type, like u8, u16, etc. ?
> Then we could just have:
>
> +struct ccdc_float_8 {
> + u8 integer;
> + u8 decimal;
> +};
>
This is an interface header which is also used by apps. So we have kept it as unsigned char. Any suggestions on that?
>
> > +
> > +/**
> > + * brief ccdc float type U16Q16/S16Q16
>
> > + */
> > +struct ccdc_float_16 {
> > + /* 16 bit integer part */
> > + unsigned short integer;
> > + /* 16 bit decimal part */
> > + unsigned short decimal;
> > +};
>
> and
>
> +struct ccdc_float_16 {
> + u16 integer;
> + u16 decimal;
> +};
>
Ditto.
> > +
> > +/*
> > + * ccdc image(target) window parameters */ struct ccdc_cropwin {
> > + /* horzontal offset of the top left corner in pixels */
> > + unsigned int left;
> > + /* vertical offset of the top left corner in pixels */
> > + unsigned int top;
> > + /* width in pixels of the rectangle */
> > + unsigned int width;
> > + /* height in lines of the rectangle */
> > + unsigned int height;
> > +};
>
> How about using struct v4l2_rect instead ?
Done.
>
> ...
> > +/**
> > + * CCDC image data size
> > + */
> > +enum ccdc_data_size {
> > + /* 8 bits */
> > + CCDC_8_BITS,
> > + /* 9 bits */
> > + CCDC_9_BITS,
> > + /* 10 bits */
> > + CCDC_10_BITS,
> > + /* 11 bits */
> > + CCDC_11_BITS,
> > + /* 12 bits */
> > + CCDC_12_BITS,
> > + /* 13 bits */
> > + CCDC_13_BITS,
> > + /* 14 bits */
> > + CCDC_14_BITS,
> > + /* 15 bits */
> > + CCDC_15_BITS,
> > + /* 16 bits */
> > + CCDC_16_BITS
> > +};
> > +
> > +/**
> > + * CCDC image data shift to right
> > + */
> > +enum ccdc_datasft {
> > + /* No Shift */
> > + CCDC_NO_SHIFT,
> > + /* 1 bit Shift */
> > + CCDC_1BIT_SHIFT,
> > + /* 2 bit Shift */
> > + CCDC_2BIT_SHIFT,
> > + /* 3 bit Shift */
> > + CCDC_3BIT_SHIFT,
> > + /* 4 bit Shift */
> > + CCDC_4BIT_SHIFT,
> > + /* 5 bit Shift */
> > + CCDC_5BIT_SHIFT,
> > + /* 6 bit Shift */
> > + CCDC_6BIT_SHIFT
> > +};
> > +
> > +/**
> > + * MSB of image data connected to sensor port */ enum ccdc_data_msb
> > +{
> > + /* MSB b15 */
> > + CCDC_BIT_MSB_15,
> > + /* MSB b14 */
> > + CCDC_BIT_MSB_14,
> > + /* MSB b13 */
> > + CCDC_BIT_MSB_13,
> > + /* MSB b12 */
> > + CCDC_BIT_MSB_12,
> > + /* MSB b11 */
> > + CCDC_BIT_MSB_11,
> > + /* MSB b10 */
> > + CCDC_BIT_MSB_10,
> > + /* MSB b9 */
> > + CCDC_BIT_MSB_9,
> > + /* MSB b8 */
> > + CCDC_BIT_MSB_8,
> > + /* MSB b7 */
> > + CCDC_BIT_MSB_7
>
> Could you live without the comments in these 3 enum declarations ?
> They don't seem to add any information.
OK.
>
>
> --
> Regards,
> Sylwester
>
>
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