msm: camera: Add support to query ISP ID (0b13113b) · Commits · e / devices / android_kernel_sony_msm8994

Where there are more than one ISP hardware available, v4l-subdev nodes are created in the order in which it is probed. ISP hardware has different capabilities. User space driver needs to differentiate these hardware. Add support to return ISP id of particular v4l-subdev node to user space driver. The ISP id comes from kernel dtsi node which the ideal representation of ISP hardware. Change-Id: Ica19c0264c5d6bdc8434c7232ea2f3e7bb72f4a1 Signed-off-by:

Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>

drivers/media/platform/msm/camera_v2/isp/msm_isp_util.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -752,6 +752,19 @@ static int msm_isp_send_hw_cmd(struct vfe_device *vfe_dev,
		}
		break;
		}
		case GET_ISP_ID: {
		uint32_t *isp_id = NULL;

		if (cmd_len < sizeof(uint32_t)) {
		pr_err("%s:%d failed: invalid cmd len %u exp %u\n",
		__func__, __LINE__, cmd_len,
		sizeof(uint32_t));
		return -EINVAL;
		}

		isp_id = (uint32_t *)cfg_data;
		*isp_id = vfe_dev->pdev->id;
		}
		}
		return 0;
		}

include/media/msmb_isp.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -246,6 +246,7 @@ enum msm_vfe_reg_cfg_type {
		VFE_READ_DMI_32BIT,
		VFE_READ_DMI_64BIT,
		GET_MAX_CLK_RATE,
		GET_ISP_ID,
		};

		struct msm_vfe_cfg_cmd2 {