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Commit 1c4191b8 authored by Sreesudhan Ramakrish Ramkumar's avatar Sreesudhan Ramakrish Ramkumar
Browse files

msm: camera: Get max vfe clk rate 



Add support to query max vfe clk rate. This max rate shall be used
by mm-qcamera-daemon user space driver to populate its capabilities
and to assign vfe resources based on request.

Change-Id: Ib65b73424d725e2d3e50e2ce2030d2f1b09e7514
Signed-off-by: default avatarSreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>
parent cb544cb0

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

+54 −0
Original line number Diff line number Diff line
@@ -256,6 +256,43 @@ int msm_isp_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, 
	return rc;

}



static int msm_isp_get_max_clk_rate(struct vfe_device *vfe_dev, long *rate)

{

	int           clk_idx = 0;

	unsigned long max_value = ~0;

	long          round_rate = 0;



	if (!vfe_dev || !rate) {

		pr_err("%s:%d failed: vfe_dev %p rate %p\n", __func__, __LINE__,

			vfe_dev, rate);

		return -EINVAL;

	}



	*rate = 0;

	if (!vfe_dev->hw_info) {

		pr_err("%s:%d failed: vfe_dev->hw_info %p\n", __func__,

			__LINE__, vfe_dev->hw_info);

		return -EINVAL;

	}



	clk_idx = vfe_dev->hw_info->vfe_clk_idx;

	if (clk_idx >= ARRAY_SIZE(vfe_dev->vfe_clk)) {

		pr_err("%s:%d failed: clk_idx %d max array size %d\n",

			__func__, __LINE__, clk_idx,

			ARRAY_SIZE(vfe_dev->vfe_clk));

		return -EINVAL;

	}



	round_rate = clk_round_rate(vfe_dev->vfe_clk[clk_idx], max_value);

	if (round_rate < 0) {

		pr_err("%s: Invalid vfe clock rate\n", __func__);

		return -EINVAL;

	}



	*rate = round_rate;

	return 0;

}



static int msm_isp_set_clk_rate(struct vfe_device *vfe_dev, long *rate)

{

	int rc = 0;
@@ -606,6 +643,23 @@ static int msm_isp_send_hw_cmd(struct vfe_device *vfe_dev, 
	case GET_SOC_HW_VER:

		*cfg_data = vfe_dev->soc_hw_version;

		break;

	case GET_MAX_CLK_RATE: {

		int rc = 0;



		if (cmd_len < sizeof(unsigned long)) {

			pr_err("%s:%d failed: invalid cmd len %d exp %d\n",

				__func__, __LINE__, cmd_len,

				sizeof(unsigned long));

			return -EINVAL;

		}

		rc = msm_isp_get_max_clk_rate(vfe_dev,

			(unsigned long *)cfg_data);

		if (rc < 0) {

			pr_err("%s:%d failed: rc %d\n", __func__, __LINE__, rc);

			return -EINVAL;

		}

		break;

	}

	}

	return 0;

}

include/media/msmb_isp.h

+1 −0
Original line number Diff line number Diff line
@@ -234,6 +234,7 @@ enum msm_vfe_reg_cfg_type { 
	VFE_READ_DMI_32BIT,

	VFE_READ_DMI_64BIT,

	GET_SOC_HW_VER,

	GET_MAX_CLK_RATE,

};



struct msm_vfe_cfg_cmd2 {