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authorAlan Cox <alan@linux.intel.com>2017-02-17 16:55:17 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-06 09:39:54 +0100
commita49d25364dfb9f8a64037488a39ab1f56c5fa419 (patch)
treebd97382cf06a958cef045e75334fc622500ba209 /drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr3/ia_css_tnr3_types.h
parent372499b589ae5ec38d3dec88b72f2bde3b3790d4 (diff)
downloadop-kernel-dev-a49d25364dfb9f8a64037488a39ab1f56c5fa419.zip
op-kernel-dev-a49d25364dfb9f8a64037488a39ab1f56c5fa419.tar.gz
staging/atomisp: Add support for the Intel IPU v2
This patch adds support for the Intel IPU v2 as found on Android and IoT Baytrail-T and Baytrail-CR platforms (those with the IPU PCI mapped). You will also need the firmware files from your device (Android usually puts them into /etc) - or you can find them in the downloadable restore/upgrade kits if you blew them away for some reason. It may be possible to extend the driver to handle the BYT/T windows platforms such as the ASUS T100TA. These platforms don't expose the IPU via the PCI interface but via ACPI buried in the GPU description and with the camera information somewhere unknown so would need a platform driver interface adding to the codebase *IFF* the firmware works on such devices. To get good results you also need a suitable support library such as libxcam. The camera is intended to be driven from Android so it has a lot of features that many desktop apps don't fully spport. In theory all the pieces are there to build it with -DISP2401 and some differing files to get CherryTrail/T support, but unifying the drivers properlly is a work in progress. The IPU driver represents the work of a lot of people within Intel over many years. It's historical goal was portability rather than Linux upstream. Any queries about the upstream aimed driver should be sent to me not to the original authors. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr3/ia_css_tnr3_types.h')
-rw-r--r--drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr3/ia_css_tnr3_types.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr3/ia_css_tnr3_types.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr3/ia_css_tnr3_types.h
new file mode 100644
index 0000000..135563f
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/tnr/tnr3/ia_css_tnr3_types.h
@@ -0,0 +1,61 @@
+#ifdef ISP2401
+/**
+Support for Intel Camera Imaging ISP subsystem.
+Copyright (c) 2010 - 2015, Intel Corporation.
+
+This program is free software; you can redistribute it and/or modify it
+under the terms and conditions of the GNU General Public License,
+version 2, as published by the Free Software Foundation.
+
+This program is distributed in the hope it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+more details.
+*/
+
+#ifndef _IA_CSS_TNR3_TYPES_H
+#define _IA_CSS_TNR3_TYPES_H
+
+/** @file
+* CSS-API header file for Temporal Noise Reduction v3 (TNR3) kernel
+*/
+
+/**
+ * \brief Number of piecewise linear segments.
+ * \details The parameters to TNR3 are specified as a piecewise linear segment.
+ * The number of such segments is fixed at 3.
+ */
+#define TNR3_NUM_SEGMENTS 3
+
+/** Temporal Noise Reduction v3 (TNR3) configuration.
+ * The parameter to this kernel is fourfold
+ * 1. Three piecewise linear graphs (one for each plane) with three segments
+ * each. Each line graph has Luma values on the x axis and sigma values for
+ * each plane on the y axis. The three linear segments may have a different
+ * slope and the point of Luma value which where the slope may change is called
+ * a "Knee" point. As there are three such segments, four points need to be
+ * specified each on the Luma axis and the per plane Sigma axis. On the Luma
+ * axis two points are fixed (namely 0 and maximum luma value - depending on
+ * ISP bit depth). The other two points are the points where the slope may
+ * change its value. These two points are called knee points. The four points on
+ * the per plane sigma axis are also specified at the interface.
+ * 2. One rounding adjustment parameter for each plane
+ * 3. One maximum feedback threshold value for each plane
+ * 4. Selection of the reference frame buffer to be used for noise reduction.
+ */
+struct ia_css_tnr3_kernel_config {
+ unsigned int maxfb_y; /**< Maximum Feedback Gain for Y */
+ unsigned int maxfb_u; /**< Maximum Feedback Gain for U */
+ unsigned int maxfb_v; /**< Maximum Feedback Gain for V */
+ unsigned int round_adj_y; /**< Rounding Adjust for Y */
+ unsigned int round_adj_u; /**< Rounding Adjust for U */
+ unsigned int round_adj_v; /**< Rounding Adjust for V */
+ unsigned int knee_y[TNR3_NUM_SEGMENTS - 1]; /**< Knee points */
+ unsigned int sigma_y[TNR3_NUM_SEGMENTS + 1]; /**< Standard deviation for Y at points Y0, Y1, Y2, Y3 */
+ unsigned int sigma_u[TNR3_NUM_SEGMENTS + 1]; /**< Standard deviation for U at points U0, U1, U2, U3 */
+ unsigned int sigma_v[TNR3_NUM_SEGMENTS + 1]; /**< Standard deviation for V at points V0, V1, V2, V3 */
+ unsigned int ref_buf_select; /**< Selection of the reference buffer */
+};
+
+#endif
+#endif
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