335 lines
8.3 KiB
C
335 lines
8.3 KiB
C
/* drivers/video/msm/mdp_ppp31.c
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*
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* Copyright (C) 2009 QUALCOMM Incorporated
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* Copyright (C) 2009 Google Incorporated
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <asm/io.h>
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#include <linux/msm_mdp.h>
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#include "mdp_hw.h"
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#include "mdp_ppp.h"
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#define NUM_COEFFS 32
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struct mdp_scale_coeffs {
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uint16_t c[4][NUM_COEFFS];
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};
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struct mdp_scale_tbl_info {
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uint16_t offset;
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uint32_t set:2;
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int use_pr;
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struct mdp_scale_coeffs coeffs;
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};
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enum {
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MDP_SCALE_PT2TOPT4,
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MDP_SCALE_PT4TOPT6,
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MDP_SCALE_PT6TOPT8,
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MDP_SCALE_PT8TO8,
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MDP_SCALE_MAX,
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};
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static struct mdp_scale_coeffs mdp_scale_pr_coeffs = {
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.c = {
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[0] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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},
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[1] = {
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511, 511, 511, 511, 511, 511, 511, 511,
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511, 511, 511, 511, 511, 511, 511, 511,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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},
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[2] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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511, 511, 511, 511, 511, 511, 511, 511,
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511, 511, 511, 511, 511, 511, 511, 511,
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},
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[3] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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},
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},
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};
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static struct mdp_scale_tbl_info mdp_scale_tbl[MDP_SCALE_MAX] = {
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[ MDP_SCALE_PT2TOPT4 ] = {
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.offset = 0,
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.set = MDP_PPP_SCALE_COEFF_D0_SET,
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.use_pr = -1,
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.coeffs.c = {
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[0] = {
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131, 131, 130, 129, 128, 127, 127, 126,
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125, 125, 124, 123, 123, 121, 120, 119,
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119, 118, 117, 117, 116, 115, 115, 114,
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113, 112, 111, 110, 109, 109, 108, 107,
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},
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[1] = {
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141, 140, 140, 140, 140, 139, 138, 138,
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138, 137, 137, 137, 136, 137, 137, 137,
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136, 136, 136, 135, 135, 135, 134, 134,
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134, 134, 134, 133, 133, 132, 132, 132,
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},
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[2] = {
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132, 132, 132, 133, 133, 134, 134, 134,
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134, 134, 135, 135, 135, 136, 136, 136,
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137, 137, 137, 136, 137, 137, 137, 138,
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138, 138, 139, 140, 140, 140, 140, 141,
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},
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[3] = {
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107, 108, 109, 109, 110, 111, 112, 113,
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114, 115, 115, 116, 117, 117, 118, 119,
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119, 120, 121, 123, 123, 124, 125, 125,
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126, 127, 127, 128, 129, 130, 131, 131,
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}
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},
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},
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[ MDP_SCALE_PT4TOPT6 ] = {
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.offset = 32,
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.set = MDP_PPP_SCALE_COEFF_D1_SET,
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.use_pr = -1,
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.coeffs.c = {
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[0] = {
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136, 132, 128, 123, 119, 115, 111, 107,
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103, 98, 95, 91, 87, 84, 80, 76,
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73, 69, 66, 62, 59, 57, 54, 50,
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47, 44, 41, 39, 36, 33, 32, 29,
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},
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[1] = {
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206, 205, 204, 204, 201, 200, 199, 197,
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196, 194, 191, 191, 189, 185, 184, 182,
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180, 178, 176, 173, 170, 168, 165, 162,
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160, 157, 155, 152, 148, 146, 142, 140,
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},
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[2] = {
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140, 142, 146, 148, 152, 155, 157, 160,
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162, 165, 168, 170, 173, 176, 178, 180,
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182, 184, 185, 189, 191, 191, 194, 196,
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197, 199, 200, 201, 204, 204, 205, 206,
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},
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[3] = {
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29, 32, 33, 36, 39, 41, 44, 47,
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50, 54, 57, 59, 62, 66, 69, 73,
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76, 80, 84, 87, 91, 95, 98, 103,
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107, 111, 115, 119, 123, 128, 132, 136,
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},
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},
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},
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[ MDP_SCALE_PT6TOPT8 ] = {
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.offset = 64,
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.set = MDP_PPP_SCALE_COEFF_D2_SET,
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.use_pr = -1,
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.coeffs.c = {
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[0] = {
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104, 96, 89, 82, 75, 68, 61, 55,
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49, 43, 38, 33, 28, 24, 20, 16,
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12, 9, 6, 4, 2, 0, -2, -4,
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-5, -6, -7, -7, -8, -8, -8, -8,
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},
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[1] = {
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303, 303, 302, 300, 298, 296, 293, 289,
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286, 281, 276, 270, 265, 258, 252, 245,
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238, 230, 223, 214, 206, 197, 189, 180,
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172, 163, 154, 145, 137, 128, 120, 112,
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},
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[2] = {
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112, 120, 128, 137, 145, 154, 163, 172,
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180, 189, 197, 206, 214, 223, 230, 238,
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245, 252, 258, 265, 270, 276, 281, 286,
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289, 293, 296, 298, 300, 302, 303, 303,
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},
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[3] = {
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-8, -8, -8, -8, -7, -7, -6, -5,
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-4, -2, 0, 2, 4, 6, 9, 12,
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16, 20, 24, 28, 33, 38, 43, 49,
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55, 61, 68, 75, 82, 89, 96, 104,
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},
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},
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},
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[ MDP_SCALE_PT8TO8 ] = {
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.offset = 96,
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.set = MDP_PPP_SCALE_COEFF_U1_SET,
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.use_pr = -1,
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.coeffs.c = {
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[0] = {
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0, -7, -13, -19, -24, -28, -32, -34,
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-37, -39, -40, -41, -41, -41, -40, -40,
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-38, -37, -35, -33, -31, -29, -26, -24,
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-21, -18, -15, -13, -10, -7, -5, -2,
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},
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[1] = {
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511, 507, 501, 494, 485, 475, 463, 450,
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436, 422, 405, 388, 370, 352, 333, 314,
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293, 274, 253, 233, 213, 193, 172, 152,
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133, 113, 95, 77, 60, 43, 28, 13,
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},
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[2] = {
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0, 13, 28, 43, 60, 77, 95, 113,
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133, 152, 172, 193, 213, 233, 253, 274,
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294, 314, 333, 352, 370, 388, 405, 422,
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436, 450, 463, 475, 485, 494, 501, 507,
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},
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[3] = {
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0, -2, -5, -7, -10, -13, -15, -18,
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-21, -24, -26, -29, -31, -33, -35, -37,
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-38, -40, -40, -41, -41, -41, -40, -39,
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-37, -34, -32, -28, -24, -19, -13, -7,
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},
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},
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},
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};
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static void load_table(const struct mdp_info *mdp, int scale, int use_pr)
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{
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int i;
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uint32_t val;
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struct mdp_scale_coeffs *coeffs;
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struct mdp_scale_tbl_info *tbl = &mdp_scale_tbl[scale];
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if (use_pr == tbl->use_pr)
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return;
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tbl->use_pr = use_pr;
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if (!use_pr)
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coeffs = &tbl->coeffs;
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else
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coeffs = &mdp_scale_pr_coeffs;
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for (i = 0; i < NUM_COEFFS; ++i) {
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val = ((coeffs->c[1][i] & 0x3ff) << 16) |
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(coeffs->c[0][i] & 0x3ff);
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mdp_writel(mdp, val, MDP_PPP_SCALE_COEFF_LSBn(tbl->offset + i));
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val = ((coeffs->c[3][i] & 0x3ff) << 16) |
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(coeffs->c[2][i] & 0x3ff);
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mdp_writel(mdp, val, MDP_PPP_SCALE_COEFF_MSBn(tbl->offset + i));
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}
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}
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#define SCALER_PHASE_BITS 29
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static void scale_params(uint32_t dim_in, uint32_t dim_out, uint32_t scaler,
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uint32_t *phase_init, uint32_t *phase_step)
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{
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uint64_t src = dim_in;
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uint64_t dst = dim_out;
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uint64_t numer;
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uint64_t denom;
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*phase_init = 0;
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if (dst == 1) {
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/* if destination is 1 pixel wide, the value of phase_step
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* is unimportant. */
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*phase_step = (uint32_t) (src << SCALER_PHASE_BITS);
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if (scaler == MDP_PPP_SCALER_FIR)
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*phase_init =
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(uint32_t) ((src - 1) << SCALER_PHASE_BITS);
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return;
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}
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if (scaler == MDP_PPP_SCALER_FIR) {
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numer = (src - 1) << SCALER_PHASE_BITS;
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denom = dst - 1;
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/* we want to round up the result*/
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numer += denom - 1;
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} else {
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numer = src << SCALER_PHASE_BITS;
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denom = dst;
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}
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do_div(numer, denom);
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*phase_step = (uint32_t) numer;
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}
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static int scale_idx(int factor)
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{
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int idx;
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if (factor > 80)
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idx = MDP_SCALE_PT8TO8;
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else if (factor > 60)
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idx = MDP_SCALE_PT6TOPT8;
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else if (factor > 40)
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idx = MDP_SCALE_PT4TOPT6;
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else
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idx = MDP_SCALE_PT2TOPT4;
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return idx;
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}
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int mdp_ppp_cfg_scale(const struct mdp_info *mdp, struct ppp_regs *regs,
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struct mdp_rect *src_rect, struct mdp_rect *dst_rect,
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uint32_t src_format, uint32_t dst_format)
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{
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uint32_t x_fac;
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uint32_t y_fac;
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uint32_t scaler_x = MDP_PPP_SCALER_FIR;
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uint32_t scaler_y = MDP_PPP_SCALER_FIR;
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// Don't use pixel repeat mode, it looks bad
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int use_pr = 0;
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int x_idx;
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int y_idx;
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if (unlikely(src_rect->w > 2048 || src_rect->h > 2048))
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return -ENOTSUPP;
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x_fac = (dst_rect->w * 100) / src_rect->w;
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y_fac = (dst_rect->h * 100) / src_rect->h;
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/* if down-scaling by a factor smaller than 1/4, use M/N */
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scaler_x = x_fac <= 25 ? MDP_PPP_SCALER_MN : MDP_PPP_SCALER_FIR;
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scaler_y = y_fac <= 25 ? MDP_PPP_SCALER_MN : MDP_PPP_SCALER_FIR;
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scale_params(src_rect->w, dst_rect->w, scaler_x, ®s->phasex_init,
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®s->phasex_step);
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scale_params(src_rect->h, dst_rect->h, scaler_y, ®s->phasey_init,
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®s->phasey_step);
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x_idx = scale_idx(x_fac);
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y_idx = scale_idx(y_fac);
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load_table(mdp, x_idx, use_pr);
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load_table(mdp, y_idx, use_pr);
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regs->scale_cfg = 0;
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// Enable SVI when source or destination is YUV
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if (!IS_RGB(src_format) && !IS_RGB(dst_format))
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regs->scale_cfg |= (1 << 6);
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regs->scale_cfg |= (mdp_scale_tbl[x_idx].set << 2) |
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(mdp_scale_tbl[x_idx].set << 4);
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regs->scale_cfg |= (scaler_x << 0) | (scaler_y << 1);
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return 0;
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}
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int mdp_ppp_load_blur(const struct mdp_info *mdp)
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{
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return -ENOTSUPP;
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}
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void mdp_ppp_init_scale(const struct mdp_info *mdp)
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{
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int scale;
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for (scale = 0; scale < MDP_SCALE_MAX; ++scale)
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load_table(mdp, scale, 0);
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}
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