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Fri, 13 Dec 2019 09:33:18 +0000 From: To: , , , Subject: [PATCH v3 1/2] media: atmel: atmel-isc-base: expose white balance as v4l2 controls Thread-Topic: [PATCH v3 1/2] media: atmel: atmel-isc-base: expose white balance as v4l2 controls Thread-Index: AQHVsZhamcM4+cj7Jkak7z8fA0UuHw== Date: Fri, 13 Dec 2019 09:33:18 +0000 Message-ID: <1576229557-27001-1-git-send-email-eugen.hristev@microchip.com> Accept-Language: en-US, ro-RO Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-originating-ip: [94.177.32.156] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 1878b85e-d2c7-44a0-6104-08d77faf7c9f x-ms-traffictypediagnostic: DM5PR11MB2027: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5516; x-forefront-prvs: 0250B840C1 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(366004)(346002)(376002)(136003)(396003)(39860400002)(189003)(199004)(76116006)(91956017)(30864003)(478600001)(8676002)(6506007)(5660300002)(71200400001)(2616005)(66446008)(66946007)(66476007)(66556008)(64756008)(110136005)(2906002)(6512007)(316002)(4326008)(86362001)(107886003)(26005)(36756003)(186003)(81156014)(81166006)(6486002)(8936002)(579004); 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X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [68.232.154.123 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eugen.Hristev@microchip.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Eugen Hristev This exposes the white balance configuration of the ISC as v4l2 controls into userspace. There are 8 controls available: 4 gain controls , sliders, for each of the BAYER components: R, B, GR, GB. These gains are multipliers for each component, in format unsigned 0:4:9 with a default value of 512 (1.0 multiplier). 4 offset controls, sliders, for each of the BAYER components: R, B, GR, GB. These offsets are added/substracted from each component, in format signed 1:12:0 with a default value of 0 (+/- 0) To expose this to userspace, added 8 custom controls, in an auto cluster. To summarize the functionality: The auto cluster switch is the auto white balance control, and it works like this: AWB ==1 : autowhitebalance is on, the do_white_balance button is inactive, the gains/offsets are inactive, but volatile and readable. Thus, the results of the whitebalance algorithm are available to userspace to read at any time. AWB ==0: autowhitebalance is off, cluster is in manual mode, user can configure the gain/offsets directly. More than that, if the do_white_balance button is pressed, the driver will perform one-time-adjustment, (preferably with color checker card) and the userspace can read again the new values. With this feature, the userspace can save the coefficients and reinstall them for example after reboot or reprobing the driver. Signed-off-by: Eugen Hristev --- Changes in v3: - Moved controls definition on separate header as done in imx driver - reserved range of user controls in v4l2-controls.h Changes in v2: - Created some macros to make the code smaller, for declaring the bal/off controls, and to convert to 2's complements required values (0 to ZERO_VAL) Compliance test for atmel-isc device /devavideo0:tmel-isc f0008000.isc: ================= START STATUS ================= v4l2-ctrls: atmel-isc f0008000.isc: Brightness: 0 v4l2-ctrls: atmel-isc f0008000.isc: Contrast: 256 v Driver Info: Driver name : atmel-isc Card type : Atmel Image Sensor Controller Bus info : platform:atmel-isc f0008000.isc Driver version : 5.5.0 Capabilities : 0x84200001 Video Capture Streaming Extended Pix Format Device Capabilities Device Caps : 0x04200001 Video Capture Streaming Extended Pix Format Required ioctls: test VIDIOC_QUERYCAP: OK Allow for multiple opens: test second /dev/video0 open: OK test VIDIOC_QUERYCAP: OK test VIDIOC_G/S_PRIORITY: OK test for unlimited opens: OK Debug ioctls: test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported) 4l2-ctrls: atmel-isc f0008000.isc: Gamma: 2 v4l2-ctrls: atmel-isc f0008000.isc: White Balance, Automatic: true v4l2-ctrls: atmel-isc f0008000.isc: Red Component Balance: 512 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Blue Component Balance: 512 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Green Red Component Balance: 512 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Green Blue Component Balance: 512 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Red Component Offset: 0 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Blue Component Offset: 0 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Green Red Component Offset: 0 inactive volatile v4l2-ctrls: atmel-isc f0008000.isc: Green Blue Component Offset: 0 inactive volatile atmel-isc f0008000.isc: ================== END STATUS ================== test VIDIOC_LOG_STATUS: OK Input ioctls: test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported) test VIDIOC_ENUMAUDIO: OK (Not Supported) test VIDIOC_G/S/ENUMINPUT: OK test VIDIOC_G/S_AUDIO: OK (Not Supported) Inputs: 1 Audio Inputs: 0 Tuners: 0 Output ioctls: test VIDIOC_G/S_MODULATOR: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_ENUMAUDOUT: OK (Not Supported) test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported) test VIDIOC_G/S_AUDOUT: OK (Not Supported) Outputs: 0 Audio Outputs: 0 Modulators: 0 Input/Output configuration ioctls: test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported) test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported) test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported) test VIDIOC_G/S_EDID: OK (Not Supported) Control ioctls (Input 0): test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK test VIDIOC_QUERYCTRL: OK test VIDIOC_G/S_CTRL: OK test VIDIOC_G/S/TRY_EXT_CTRLS: OK test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK test VIDIOC_G/S_JPEGCOMP: OK (Not Supported) Standard Controls: 6 Private Controls: 8 Format ioctls (Input 0): test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK test VIDIOC_G/S_PARM: OK test VIDIOC_G_FBUF: OK (Not Supported) test VIDIOC_G_FMT: OK test VIDIOC_TRY_FMT: OK test VIDIOC_S_FMT: OK test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported) test Cropping: OK (Not Supported) test Composing: OK (Not Supported) test Scaling: OK (Not Supported) Codec ioctls (Input 0): test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported) test VIDIOC_G_ENC_INDEX: OK (Not Supported) test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported) Buffer ioctls (Input 0): test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK test VIDIOC_EXPBUF: OK test Requests: OK (Not Supported) Total for atmel-isc device /dev/video0: 44, Succeeded: 44, Failed: 0, Warnings: 0 # v4l2-ctl -L User Controls brightness 0x00980900 (int) : min=-1024 max=1023 step=1 default=0 value=0 flags=slider contrast 0x00980901 (int) : min=-2048 max=2047 step=1 default=256 value=256 flags=slider white_balance_automatic 0x0098090c (bool) : default=1 value=1 flags=update do_white_balance 0x0098090d (button) : flags=inactive, write-only, volatile, execute-on-write gamma 0x00980910 (int) : min=0 max=2 step=1 default=2 value=2 flags=slider red_component_balance 0x009819c0 (int) : min=0 max=8191 step=1 default=512 value=512 flags=inactive, slider, volatile blue_component_balance 0x009819c1 (int) : min=0 max=8191 step=1 default=512 value=512 flags=inactive, slider, volatile green_red_component_balance 0x009819c2 (int) : min=0 max=8191 step=1 default=512 value=512 flags=inactive, slider, volatile green_blue_component_balance 0x009819c3 (int) : min=0 max=8191 step=1 default=512 value=512 flags=inactive, slider, volatile red_component_offset 0x009819c4 (int) : min=-4095 max=4095 step=1 default=0 value=0 flags=inactive, slider, volatile blue_component_offset 0x009819c5 (int) : min=-4095 max=4095 step=1 default=0 value=0 flags=inactive, slider, volatile green_red_component_offset 0x009819c6 (int) : min=-4095 max=4095 step=1 default=0 value=0 flags=inactive, slider, volatile green_blue_component_offset 0x009819c7 (int) : min=-4095 max=4095 step=1 default=0 value=0 flags=inactive, slider, volatile # drivers/media/platform/atmel/atmel-isc-base.c | 222 ++++++++++++++++++++++---- drivers/media/platform/atmel/atmel-isc.h | 23 ++- include/linux/atmel-isc-media.h | 30 ++++ include/uapi/linux/v4l2-controls.h | 4 + 4 files changed, 251 insertions(+), 28 deletions(-) create mode 100644 include/linux/atmel-isc-media.h diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c index c1c776b..814a425 100644 --- a/drivers/media/platform/atmel/atmel-isc-base.c +++ b/drivers/media/platform/atmel/atmel-isc-base.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include @@ -211,10 +212,35 @@ const u32 isc_gamma_table[GAMMA_MAX + 1][GAMMA_ENTRIES] = { #define ISC_IS_FORMAT_RAW(mbus_code) \ (((mbus_code) & 0xf000) == 0x3000) +#define ISC_CTRL_ISC_TO_V4L2(x) ((x) == ISC_WB_O_ZERO_VAL ? 0 : (x)) +#define ISC_CTRL_V4L2_TO_ISC(x) ((x) ? (x) : ISC_WB_O_ZERO_VAL) + +static inline void isc_update_v4l2_ctrls(struct isc_device *isc) +{ + struct isc_ctrls *ctrls = &isc->ctrls; + + /* In here we set the v4l2 controls w.r.t. our pipeline config */ + v4l2_ctrl_s_ctrl(isc->r_bal_ctrl, ctrls->gain[ISC_HIS_CFG_MODE_R]); + v4l2_ctrl_s_ctrl(isc->b_bal_ctrl, ctrls->gain[ISC_HIS_CFG_MODE_B]); + v4l2_ctrl_s_ctrl(isc->gr_bal_ctrl, ctrls->gain[ISC_HIS_CFG_MODE_GR]); + v4l2_ctrl_s_ctrl(isc->gb_bal_ctrl, ctrls->gain[ISC_HIS_CFG_MODE_GB]); + + v4l2_ctrl_s_ctrl(isc->r_off_ctrl, + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_R])); + v4l2_ctrl_s_ctrl(isc->b_off_ctrl, + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_B])); + v4l2_ctrl_s_ctrl(isc->gr_off_ctrl, + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_GR])); + v4l2_ctrl_s_ctrl(isc->gb_off_ctrl, + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_GB])); +} + static inline void isc_update_awb_ctrls(struct isc_device *isc) { struct isc_ctrls *ctrls = &isc->ctrls; + /* In here we set our actual hw pipeline config */ + regmap_write(isc->regmap, ISC_WB_O_RGR, (ISC_WB_O_ZERO_VAL - (ctrls->offset[ISC_HIS_CFG_MODE_R])) | ((ISC_WB_O_ZERO_VAL - ctrls->offset[ISC_HIS_CFG_MODE_GR]) << 16)); @@ -649,11 +675,9 @@ static void isc_set_pipeline(struct isc_device *isc, u32 pipeline) bay_cfg = isc->config.sd_format->cfa_baycfg; - if (ctrls->awb == ISC_WB_NONE) - isc_reset_awb_ctrls(isc); - regmap_write(regmap, ISC_WB_CFG, bay_cfg); isc_update_awb_ctrls(isc); + isc_update_v4l2_ctrls(isc); regmap_write(regmap, ISC_CFA_CFG, bay_cfg | ISC_CFA_CFG_EITPOL); @@ -1339,6 +1363,7 @@ static int isc_set_fmt(struct isc_device *isc, struct v4l2_format *f) isc->try_config.sd_format != isc->config.sd_format) { isc->ctrls.hist_stat = HIST_INIT; isc_reset_awb_ctrls(isc); + isc_update_v4l2_ctrls(isc); } /* make the try configuration active */ isc->config = isc->try_config; @@ -1758,10 +1783,6 @@ static void isc_awb_work(struct work_struct *w) ctrls->hist_id = hist_id; baysel = isc->config.sd_format->cfa_baycfg << ISC_HIS_CFG_BAYSEL_SHIFT; - /* if no more auto white balance, reset controls. */ - if (ctrls->awb == ISC_WB_NONE) - isc_reset_awb_ctrls(isc); - pm_runtime_get_sync(isc->dev); /* @@ -1786,6 +1807,8 @@ static void isc_awb_work(struct work_struct *w) if (ctrls->awb == ISC_WB_ONETIME) { v4l2_info(&isc->v4l2_dev, "Completed one time white-balance adjustment.\n"); + /* update the v4l2 controls values */ + isc_update_v4l2_ctrls(isc); ctrls->awb = ISC_WB_NONE; } } @@ -1817,6 +1840,27 @@ static int isc_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_GAMMA: ctrls->gamma_index = ctrl->val; break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct v4l2_ctrl_ops isc_ctrl_ops = { + .s_ctrl = isc_s_ctrl, +}; + +static int isc_s_awb_ctrl(struct v4l2_ctrl *ctrl) +{ + struct isc_device *isc = container_of(ctrl->handler, + struct isc_device, ctrls.handler); + struct isc_ctrls *ctrls = &isc->ctrls; + + if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) + return 0; + + switch (ctrl->id) { case V4L2_CID_AUTO_WHITE_BALANCE: if (ctrl->val == 1) ctrls->awb = ISC_WB_AUTO; @@ -1827,36 +1871,142 @@ static int isc_s_ctrl(struct v4l2_ctrl *ctrl) if (!isc->config.sd_format) break; - if (ctrls->hist_stat != HIST_ENABLED) - isc_reset_awb_ctrls(isc); + /* configure the controls with new values from v4l2 */ + if (ctrl->cluster[ISC_CTRL_R_BAL]->is_new) + ctrls->gain[ISC_HIS_CFG_MODE_R] = isc->r_bal_ctrl->val; + if (ctrl->cluster[ISC_CTRL_B_BAL]->is_new) + ctrls->gain[ISC_HIS_CFG_MODE_B] = isc->b_bal_ctrl->val; + if (ctrl->cluster[ISC_CTRL_GR_BAL]->is_new) + ctrls->gain[ISC_HIS_CFG_MODE_GR] = isc->gr_bal_ctrl->val; + if (ctrl->cluster[ISC_CTRL_GB_BAL]->is_new) + ctrls->gain[ISC_HIS_CFG_MODE_GB] = isc->gb_bal_ctrl->val; + + if (ctrl->cluster[ISC_CTRL_R_OFF]->is_new) + ctrls->offset[ISC_HIS_CFG_MODE_R] = + ISC_CTRL_V4L2_TO_ISC(isc->r_off_ctrl->val); + if (ctrl->cluster[ISC_CTRL_B_OFF]->is_new) + ctrls->offset[ISC_HIS_CFG_MODE_B] = + ISC_CTRL_V4L2_TO_ISC(isc->b_off_ctrl->val); + if (ctrl->cluster[ISC_CTRL_GR_OFF]->is_new) + ctrls->offset[ISC_HIS_CFG_MODE_GR] = + ISC_CTRL_V4L2_TO_ISC(isc->gr_off_ctrl->val); + if (ctrl->cluster[ISC_CTRL_GB_OFF]->is_new) + ctrls->offset[ISC_HIS_CFG_MODE_GB] = + ISC_CTRL_V4L2_TO_ISC(isc->gb_off_ctrl->val); - if (isc->ctrls.awb == ISC_WB_AUTO && + isc_update_awb_ctrls(isc); + + if (vb2_is_streaming(&isc->vb2_vidq)) { + /* + * If we are streaming, we can update profile to + * have the new settings in place. + */ + isc_update_profile(isc); + } else { + /* + * The auto cluster will activate automatically this + * control. This has to be deactivated when not + * streaming. + */ + v4l2_ctrl_activate(isc->do_wb_ctrl, false); + } + + /* if we have autowhitebalance on, start histogram procedure */ + if (ctrls->awb == ISC_WB_AUTO && vb2_is_streaming(&isc->vb2_vidq) && ISC_IS_FORMAT_RAW(isc->config.sd_format->mbus_code)) isc_set_histogram(isc, true); - break; - case V4L2_CID_DO_WHITE_BALANCE: - /* if AWB is enabled, do nothing */ - if (ctrls->awb == ISC_WB_AUTO) - return 0; + /* + * for one time whitebalance adjustment, check the button, + * if it's pressed, perform the one time operation. + */ + if (ctrls->awb == ISC_WB_NONE && + ctrl->cluster[ISC_CTRL_DO_WB]->is_new && + !(ctrl->cluster[ISC_CTRL_DO_WB]->flags & + V4L2_CTRL_FLAG_INACTIVE)) { + ctrls->awb = ISC_WB_ONETIME; + isc_set_histogram(isc, true); + v4l2_dbg(1, debug, &isc->v4l2_dev, + "One time white-balance started.\n"); + } + return 0; + } + return 0; +} - ctrls->awb = ISC_WB_ONETIME; - isc_set_histogram(isc, true); - v4l2_dbg(1, debug, &isc->v4l2_dev, - "One time white-balance started.\n"); +static int isc_g_volatile_awb_ctrl(struct v4l2_ctrl *ctrl) +{ + struct isc_device *isc = container_of(ctrl->handler, + struct isc_device, ctrls.handler); + struct isc_ctrls *ctrls = &isc->ctrls; + + switch (ctrl->id) { + /* being a cluster, this id will be called for every control */ + case V4L2_CID_AUTO_WHITE_BALANCE: + ctrl->cluster[ISC_CTRL_R_BAL]->val = + ctrls->gain[ISC_HIS_CFG_MODE_R]; + ctrl->cluster[ISC_CTRL_B_BAL]->val = + ctrls->gain[ISC_HIS_CFG_MODE_B]; + ctrl->cluster[ISC_CTRL_GR_BAL]->val = + ctrls->gain[ISC_HIS_CFG_MODE_GR]; + ctrl->cluster[ISC_CTRL_GB_BAL]->val = + ctrls->gain[ISC_HIS_CFG_MODE_GB]; + + ctrl->cluster[ISC_CTRL_R_OFF]->val = + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_R]); + ctrl->cluster[ISC_CTRL_B_OFF]->val = + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_B]); + ctrl->cluster[ISC_CTRL_GR_OFF]->val = + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_GR]); + ctrl->cluster[ISC_CTRL_GB_OFF]->val = + ISC_CTRL_ISC_TO_V4L2(ctrls->offset[ISC_HIS_CFG_MODE_GB]); break; - default: - return -EINVAL; } - return 0; } -static const struct v4l2_ctrl_ops isc_ctrl_ops = { - .s_ctrl = isc_s_ctrl, +static const struct v4l2_ctrl_ops isc_awb_ops = { + .s_ctrl = isc_s_awb_ctrl, + .g_volatile_ctrl = isc_g_volatile_awb_ctrl, }; +#define ISC_CTRL_OFF(_name, _id, _name_str) \ + static const struct v4l2_ctrl_config _name = { \ + .ops = &isc_awb_ops, \ + .id = _id, \ + .name = _name_str, \ + .type = V4L2_CTRL_TYPE_INTEGER, \ + .flags = V4L2_CTRL_FLAG_SLIDER, \ + .min = -4095, \ + .max = 4095, \ + .step = 1, \ + .def = 0, \ + } + +ISC_CTRL_OFF(isc_r_off_ctrl, ISC_CID_R_OFFSET, "Red Component Offset"); +ISC_CTRL_OFF(isc_b_off_ctrl, ISC_CID_B_OFFSET, "Blue Component Offset"); +ISC_CTRL_OFF(isc_gr_off_ctrl, ISC_CID_GR_OFFSET, "Green Red Component Offset"); +ISC_CTRL_OFF(isc_gb_off_ctrl, ISC_CID_GB_OFFSET, "Green Blue Component Offset"); + +#define ISC_CTRL_BAL(_name, _id, _name_str) \ + static const struct v4l2_ctrl_config _name = { \ + .ops = &isc_awb_ops, \ + .id = _id, \ + .name = _name_str, \ + .type = V4L2_CTRL_TYPE_INTEGER, \ + .flags = V4L2_CTRL_FLAG_SLIDER, \ + .min = 0, \ + .max = 8191, \ + .step = 1, \ + .def = 512, \ + } + +ISC_CTRL_BAL(isc_r_bal_ctrl, ISC_CID_R_BAL, "Red Component Balance"); +ISC_CTRL_BAL(isc_b_bal_ctrl, ISC_CID_B_BAL, "Blue Component Balance"); +ISC_CTRL_BAL(isc_gr_bal_ctrl, ISC_CID_GR_BAL, "Green Red Component Balance"); +ISC_CTRL_BAL(isc_gb_bal_ctrl, ISC_CID_GB_BAL, "Green Blue Component Balance"); + static int isc_ctrl_init(struct isc_device *isc) { const struct v4l2_ctrl_ops *ops = &isc_ctrl_ops; @@ -1867,7 +2017,7 @@ static int isc_ctrl_init(struct isc_device *isc) ctrls->hist_stat = HIST_INIT; isc_reset_awb_ctrls(isc); - ret = v4l2_ctrl_handler_init(hdl, 5); + ret = v4l2_ctrl_handler_init(hdl, 13); if (ret < 0) return ret; @@ -1877,10 +2027,13 @@ static int isc_ctrl_init(struct isc_device *isc) v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -1024, 1023, 1, 0); v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -2048, 2047, 1, 256); v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAMMA, 0, GAMMA_MAX, 1, 2); - v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); + isc->awb_ctrl = v4l2_ctrl_new_std(hdl, &isc_awb_ops, + V4L2_CID_AUTO_WHITE_BALANCE, + 0, 1, 1, 1); /* do_white_balance is a button, so min,max,step,default are ignored */ - isc->do_wb_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DO_WHITE_BALANCE, + isc->do_wb_ctrl = v4l2_ctrl_new_std(hdl, &isc_awb_ops, + V4L2_CID_DO_WHITE_BALANCE, 0, 0, 0, 0); if (!isc->do_wb_ctrl) { @@ -1891,6 +2044,21 @@ static int isc_ctrl_init(struct isc_device *isc) v4l2_ctrl_activate(isc->do_wb_ctrl, false); + isc->r_bal_ctrl = v4l2_ctrl_new_custom(hdl, &isc_r_bal_ctrl, NULL); + isc->b_bal_ctrl = v4l2_ctrl_new_custom(hdl, &isc_b_bal_ctrl, NULL); + isc->gr_bal_ctrl = v4l2_ctrl_new_custom(hdl, &isc_gr_bal_ctrl, NULL); + isc->gb_bal_ctrl = v4l2_ctrl_new_custom(hdl, &isc_gb_bal_ctrl, NULL); + isc->r_off_ctrl = v4l2_ctrl_new_custom(hdl, &isc_r_off_ctrl, NULL); + isc->b_off_ctrl = v4l2_ctrl_new_custom(hdl, &isc_b_off_ctrl, NULL); + isc->gr_off_ctrl = v4l2_ctrl_new_custom(hdl, &isc_gr_off_ctrl, NULL); + isc->gb_off_ctrl = v4l2_ctrl_new_custom(hdl, &isc_gb_off_ctrl, NULL); + + /* + * The cluster is in auto mode with autowhitebalance enabled + * and manual mode otherwise. + */ + v4l2_ctrl_auto_cluster(10, &isc->awb_ctrl, 0, true); + v4l2_ctrl_handler_setup(hdl); return 0; diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h index bfaed2f..2cc6a33 100644 --- a/drivers/media/platform/atmel/atmel-isc.h +++ b/drivers/media/platform/atmel/atmel-isc.h @@ -213,7 +213,6 @@ struct isc_device { struct fmt_config try_config; struct isc_ctrls ctrls; - struct v4l2_ctrl *do_wb_ctrl; struct work_struct awb_work; struct mutex lock; /* serialize access to file operations */ @@ -223,6 +222,28 @@ struct isc_device { struct isc_subdev_entity *current_subdev; struct list_head subdev_entities; + + struct { +#define ISC_CTRL_DO_WB 1 +#define ISC_CTRL_R_BAL 2 +#define ISC_CTRL_B_BAL 3 +#define ISC_CTRL_GR_BAL 4 +#define ISC_CTRL_GB_BAL 5 +#define ISC_CTRL_R_OFF 6 +#define ISC_CTRL_B_OFF 7 +#define ISC_CTRL_GR_OFF 8 +#define ISC_CTRL_GB_OFF 9 + struct v4l2_ctrl *awb_ctrl; + struct v4l2_ctrl *do_wb_ctrl; + struct v4l2_ctrl *r_bal_ctrl; + struct v4l2_ctrl *b_bal_ctrl; + struct v4l2_ctrl *gr_bal_ctrl; + struct v4l2_ctrl *gb_bal_ctrl; + struct v4l2_ctrl *r_off_ctrl; + struct v4l2_ctrl *b_off_ctrl; + struct v4l2_ctrl *gr_off_ctrl; + struct v4l2_ctrl *gb_off_ctrl; + }; }; #define GAMMA_MAX 2 diff --git a/include/linux/atmel-isc-media.h b/include/linux/atmel-isc-media.h new file mode 100644 index 0000000..ebb705b --- /dev/null +++ b/include/linux/atmel-isc-media.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2019 Microchip Technology Inc. and its subsidiaries + * + * Author: Eugen Hristev + */ + +#ifndef __LINUX_ATMEL_ISC_MEDIA_H__ +#define __LINUX_ATMEL_ISC_MEDIA_H__ + +enum atmel_isc_ctrl_id { + /* Red component gain control */ + ISC_CID_R_BAL = (V4L2_CID_USER_ATMEL_ISC_BASE + 0), + /* Blue component gain control */ + ISC_CID_B_BAL, + /* Green Red component gain control */ + ISC_CID_GR_BAL, + /* Green Blue gain control */ + ISC_CID_GB_BAL, + /* Red component offset control */ + ISC_CID_R_OFFSET, + /* Blue component offset control */ + ISC_CID_B_OFFSET, + /* Green Red component offset control */ + ISC_CID_GR_OFFSET, + /* Green Blue component offset control */ + ISC_CID_GB_OFFSET, +}; + +#endif diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index 5a7bede..95e0291 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -192,6 +192,10 @@ enum v4l2_colorfx { * We reserve 16 controls for this driver. */ #define V4L2_CID_USER_IMX_BASE (V4L2_CID_USER_BASE + 0x10b0) +/* The base for the atmel isc driver controls. + * We reserve 32 controls for this driver. */ +#define V4L2_CID_USER_ATMEL_ISC_BASE (V4L2_CID_USER_BASE + 0x10c0) + /* MPEG-class control IDs */ /* The MPEG controls are applicable to all codec controls * and the 'MPEG' part of the define is historical */