1 files changed, 386 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/s3a/s3a_1.0/ia_css_s3a.host.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/s3a/s3a_1.0/ia_css_s3a.host.c
new file mode 100644
index 0000000..8ef6c54
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/s3a/s3a_1.0/ia_css_s3a.host.c
@@ -0,0 +1,386 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 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.
+ */
+
+#include "ia_css_types.h"
+#include "sh_css_defs.h"
+#ifndef IA_CSS_NO_DEBUG
+#include "ia_css_debug.h"
+#endif
+#include "sh_css_frac.h"
+#include "assert_support.h"
+
+#include "bh/bh_2/ia_css_bh.host.h"
+#include "ia_css_s3a.host.h"
+
+const struct ia_css_3a_config default_3a_config = {
+	25559,
+	32768,
+	7209,
+	65535,
+	0,
+	65535,
+	{-3344, -6104, -19143, 19143, 6104, 3344, 0},
+	{1027, 0, -9219, 16384, -9219, 1027, 0}
+};
+
+static unsigned int s3a_raw_bit_depth;
+
+void
+ia_css_s3a_configure(unsigned int raw_bit_depth)
+{
+  s3a_raw_bit_depth = raw_bit_depth;
+}
+
+static void
+ia_css_ae_encode(
+	struct sh_css_isp_ae_params *to,
+	const struct ia_css_3a_config *from,
+	unsigned size)
+{
+	(void)size;
+	/* coefficients to calculate Y */
+	to->y_coef_r =
+	    uDIGIT_FITTING(from->ae_y_coef_r, 16, SH_CSS_AE_YCOEF_SHIFT);
+	to->y_coef_g =
+	    uDIGIT_FITTING(from->ae_y_coef_g, 16, SH_CSS_AE_YCOEF_SHIFT);
+	to->y_coef_b =
+	    uDIGIT_FITTING(from->ae_y_coef_b, 16, SH_CSS_AE_YCOEF_SHIFT);
+}
+
+static void
+ia_css_awb_encode(
+	struct sh_css_isp_awb_params *to,
+	const struct ia_css_3a_config *from,
+	unsigned size)
+{
+	(void)size;
+	/* AWB level gate */
+	to->lg_high_raw =
+		uDIGIT_FITTING(from->awb_lg_high_raw, 16, s3a_raw_bit_depth);
+	to->lg_low =
+		uDIGIT_FITTING(from->awb_lg_low, 16, SH_CSS_BAYER_BITS);
+	to->lg_high =
+		uDIGIT_FITTING(from->awb_lg_high, 16, SH_CSS_BAYER_BITS);
+}
+
+static void
+ia_css_af_encode(
+	struct sh_css_isp_af_params *to,
+	const struct ia_css_3a_config *from,
+	unsigned size)
+{
+	unsigned int i;
+	(void)size;
+
+	/* af fir coefficients */
+	for (i = 0; i < 7; ++i) {
+		to->fir1[i] =
+		  sDIGIT_FITTING(from->af_fir1_coef[i], 15,
+				 SH_CSS_AF_FIR_SHIFT);
+		to->fir2[i] =
+		  sDIGIT_FITTING(from->af_fir2_coef[i], 15,
+				 SH_CSS_AF_FIR_SHIFT);
+	}
+}
+
+void
+ia_css_s3a_encode(
+	struct sh_css_isp_s3a_params *to,
+	const struct ia_css_3a_config *from,
+	unsigned size)
+{
+	(void)size;
+
+	ia_css_ae_encode(&to->ae,   from, sizeof(to->ae));
+	ia_css_awb_encode(&to->awb, from, sizeof(to->awb));
+	ia_css_af_encode(&to->af,   from, sizeof(to->af));
+}
+
+#if 0
+void
+ia_css_process_s3a(
+	unsigned pipe_id,
+	const struct ia_css_pipeline_stage *stage,
+	struct ia_css_isp_parameters *params)
+{
+	short dmem_offset = stage->binary->info->mem_offsets->dmem.s3a;
+
+	assert(params != NULL);
+
+	if (dmem_offset >= 0) {
+		ia_css_s3a_encode((struct sh_css_isp_s3a_params *)
+				&stage->isp_mem_params[IA_CSS_ISP_DMEM0].address[dmem_offset],
+				&params->s3a_config);
+		ia_css_bh_encode((struct sh_css_isp_bh_params *)
+				&stage->isp_mem_params[IA_CSS_ISP_DMEM0].address[dmem_offset],
+				&params->s3a_config);
+		params->isp_params_changed = true;
+		params->isp_mem_params_changed[pipe_id][stage->stage_num][IA_CSS_ISP_DMEM0] = true;
+	}
+
+	params->isp_params_changed = true;
+}
+#endif
+
+#ifndef IA_CSS_NO_DEBUG
+void
+ia_css_ae_dump(
+	const struct sh_css_isp_ae_params *ae,
+	unsigned level)
+{
+	if (!ae) return;
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ae_y_coef_r", ae->y_coef_r);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ae_y_coef_g", ae->y_coef_g);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"ae_y_coef_b", ae->y_coef_b);
+}
+
+void
+ia_css_awb_dump(
+	const struct sh_css_isp_awb_params *awb,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"awb_lg_high_raw", awb->lg_high_raw);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"awb_lg_low", awb->lg_low);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"awb_lg_high", awb->lg_high);
+}
+
+void
+ia_css_af_dump(
+	const struct sh_css_isp_af_params *af,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[0]", af->fir1[0]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[1]", af->fir1[1]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[2]", af->fir1[2]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[3]", af->fir1[3]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[4]", af->fir1[4]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[5]", af->fir1[5]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir1[6]", af->fir1[6]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[0]", af->fir2[0]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[1]", af->fir2[1]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[2]", af->fir2[2]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[3]", af->fir2[3]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[4]", af->fir2[4]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[5]", af->fir2[5]);
+	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
+			"af_fir2[6]", af->fir2[6]);
+}
+
+void
+ia_css_s3a_dump(
+	const struct sh_css_isp_s3a_params *s3a,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level, "S3A Support:\n");
+	ia_css_ae_dump  (&s3a->ae, level);
+	ia_css_awb_dump (&s3a->awb, level);
+	ia_css_af_dump  (&s3a->af, level);
+}
+
+void
+ia_css_s3a_debug_dtrace(
+	const struct ia_css_3a_config *config,
+	unsigned level)
+{
+	ia_css_debug_dtrace(level,
+		"config.ae_y_coef_r=%d, config.ae_y_coef_g=%d, "
+		"config.ae_y_coef_b=%d, config.awb_lg_high_raw=%d, "
+		"config.awb_lg_low=%d, config.awb_lg_high=%d\n",
+		config->ae_y_coef_r, config->ae_y_coef_g,
+		config->ae_y_coef_b, config->awb_lg_high_raw,
+		config->awb_lg_low, config->awb_lg_high);
+}
+#endif
+
+void
+ia_css_s3a_hmem_decode(
+	struct ia_css_3a_statistics *host_stats,
+	const struct ia_css_bh_table *hmem_buf)
+{
+#if defined(HAS_NO_HMEM)
+	(void)host_stats;
+	(void)hmem_buf;
+#else
+	struct ia_css_3a_rgby_output	*out_ptr;
+	int			i;
+
+	/* pixel counts(BQ) for 3A area */
+	int count_for_3a;
+	int sum_r, diff;
+
+	assert(host_stats != NULL);
+	assert(host_stats->rgby_data != NULL);
+	assert(hmem_buf != NULL);
+
+	count_for_3a = host_stats->grid.width * host_stats->grid.height
+	    * host_stats->grid.bqs_per_grid_cell
+	    * host_stats->grid.bqs_per_grid_cell;
+
+	out_ptr = host_stats->rgby_data;
+
+	ia_css_bh_hmem_decode(out_ptr, hmem_buf);
+
+	/* Calculate sum of histogram of R,
+	   which should not be less than count_for_3a */
+	sum_r = 0;
+	for (i = 0; i < HMEM_UNIT_SIZE; i++) {
+		sum_r += out_ptr[i].r;
+	}
+	if (sum_r < count_for_3a) {
+		/* histogram is invalid */
+		return;
+	}
+
+	/* Verify for sum of histogram of R/G/B/Y */
+#if 0
+	{
+		int sum_g = 0;
+		int sum_b = 0;
+		int sum_y = 0;
+		for (i = 0; i < HMEM_UNIT_SIZE; i++) {
+			sum_g += out_ptr[i].g;
+			sum_b += out_ptr[i].b;
+			sum_y += out_ptr[i].y;
+		}
+		if (sum_g != sum_r || sum_b != sum_r || sum_y != sum_r) {
+			/* histogram is invalid */
+			return;
+		}
+	}
+#endif
+
+	/*
+	 * Limit the histogram area only to 3A area.
+	 * In DSP, the histogram of 0 is incremented for pixels
+	 * which are outside of 3A area. That amount should be subtracted here.
+	 *   hist[0] = hist[0] - ((sum of all hist[]) - (pixel count for 3A area))
+	 */
+	diff = sum_r - count_for_3a;
+	out_ptr[0].r -= diff;
+	out_ptr[0].g -= diff;
+	out_ptr[0].b -= diff;
+	out_ptr[0].y -= diff;
+#endif
+}
+
+void
+ia_css_s3a_dmem_decode(
+	struct ia_css_3a_statistics *host_stats,
+	const struct ia_css_3a_output *isp_stats)
+{
+	int isp_width, host_width, height, i;
+	struct ia_css_3a_output *host_ptr;
+
+	assert(host_stats != NULL);
+	assert(host_stats->data != NULL);
+	assert(isp_stats != NULL);
+
+	isp_width  = host_stats->grid.aligned_width;
+	host_width = host_stats->grid.width;
+	height     = host_stats->grid.height;
+	host_ptr   = host_stats->data;
+
+	/* Getting 3A statistics from DMEM does not involve any
+	 * transformation (like the VMEM version), we just copy the data
+	 * using a different output width. */
+	for (i = 0; i < height; i++) {
+		memcpy(host_ptr, isp_stats, host_width * sizeof(*host_ptr));
+		isp_stats += isp_width;
+		host_ptr += host_width;
+	}
+}
+
+/* MW: this is an ISP function */
+STORAGE_CLASS_INLINE int
+merge_hi_lo_14(unsigned short hi, unsigned short lo)
+{
+	int val = (int) ((((unsigned int) hi << 14) & 0xfffc000) |
+			((unsigned int) lo & 0x3fff));
+	return val;
+}
+
+void
+ia_css_s3a_vmem_decode(
+	struct ia_css_3a_statistics *host_stats,
+	const uint16_t *isp_stats_hi,
+	const uint16_t *isp_stats_lo)
+{
+	int out_width, out_height, chunk, rest, kmax, y, x, k, elm_start, elm, ofs;
+	const uint16_t *hi, *lo;
+	struct ia_css_3a_output *output;
+
+	assert(host_stats!= NULL);
+	assert(host_stats->data != NULL);
+	assert(isp_stats_hi != NULL);
+	assert(isp_stats_lo != NULL);
+
+	output = host_stats->data;
+	out_width  = host_stats->grid.width;
+	out_height = host_stats->grid.height;
+	hi = isp_stats_hi;
+	lo = isp_stats_lo;
+
+	chunk = ISP_VEC_NELEMS >> host_stats->grid.deci_factor_log2;
+	chunk = max(chunk, 1);
+
+	for (y = 0; y < out_height; y++) {
+		elm_start = y * ISP_S3ATBL_HI_LO_STRIDE;
+		rest = out_width;
+		x = 0;
+		while (x < out_width) {
+			kmax = (rest > chunk) ? chunk : rest;
+			ofs = y * out_width + x;
+			elm = elm_start + x * sizeof(*output) / sizeof(int32_t);
+			for (k = 0; k < kmax; k++, elm++) {
+				output[ofs + k].ae_y    = merge_hi_lo_14(
+				    hi[elm + chunk * 0], lo[elm + chunk * 0]);
+				output[ofs + k].awb_cnt = merge_hi_lo_14(
+				    hi[elm + chunk * 1], lo[elm + chunk * 1]);
+				output[ofs + k].awb_gr  = merge_hi_lo_14(
+				    hi[elm + chunk * 2], lo[elm + chunk * 2]);
+				output[ofs + k].awb_r   = merge_hi_lo_14(
+				    hi[elm + chunk * 3], lo[elm + chunk * 3]);
+				output[ofs + k].awb_b   = merge_hi_lo_14(
+				    hi[elm + chunk * 4], lo[elm + chunk * 4]);
+				output[ofs + k].awb_gb  = merge_hi_lo_14(
+				    hi[elm + chunk * 5], lo[elm + chunk * 5]);
+				output[ofs + k].af_hpf1 = merge_hi_lo_14(
+				    hi[elm + chunk * 6], lo[elm + chunk * 6]);
+				output[ofs + k].af_hpf2 = merge_hi_lo_14(
+				    hi[elm + chunk * 7], lo[elm + chunk * 7]);
+			}
+			x += chunk;
+			rest -= chunk;
+		}
+	}
+}