147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/*
|
|
* mods_tegradc.c - This file is part of NVIDIA MODS kernel driver.
|
|
*
|
|
* Copyright (c) 2014-2018, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* NVIDIA MODS kernel driver is free software: you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* NVIDIA MODS kernel driver is distributed in the hope that 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with NVIDIA MODS kernel driver.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/uaccess.h>
|
|
#include <../drivers/video/tegra/dc/dc_priv.h>
|
|
#include <video/tegra_dc_ext_kernel.h>
|
|
#include <linux/platform/tegra/mc.h>
|
|
#include "mods_internal.h"
|
|
|
|
static void mods_tegra_dc_set_windowattr_basic(struct tegra_dc_win *win,
|
|
const struct MODS_TEGRA_DC_WINDOW *mods_win)
|
|
{
|
|
win->global_alpha = 0;
|
|
win->z = 0;
|
|
win->stride = 0;
|
|
win->stride_uv = 0;
|
|
|
|
win->flags = TEGRA_WIN_FLAG_ENABLED;
|
|
if (mods_win->flags & MODS_TEGRA_DC_WINDOW_FLAG_TILED)
|
|
win->flags |= TEGRA_WIN_FLAG_TILED;
|
|
if (mods_win->flags & MODS_TEGRA_DC_WINDOW_FLAG_SCAN_COL)
|
|
win->flags |= TEGRA_WIN_FLAG_SCAN_COLUMN;
|
|
|
|
win->fmt = mods_win->pixformat;
|
|
win->x.full = mods_win->x;
|
|
win->y.full = mods_win->y;
|
|
win->w.full = mods_win->w;
|
|
win->h.full = mods_win->h;
|
|
/* XXX verify that this doesn't go outside display's active region */
|
|
win->out_x = mods_win->out_x;
|
|
win->out_y = mods_win->out_y;
|
|
win->out_w = mods_win->out_w;
|
|
win->out_h = mods_win->out_h;
|
|
|
|
mods_debug_printk(DEBUG_TEGRADC,
|
|
"set_windowattr_basic window %u:\n"
|
|
"\tflags : 0x%08x\n"
|
|
"\tfmt : %u\n"
|
|
"\tinput : (%u, %u, %u, %u)\n"
|
|
"\toutput: (%u, %u, %u, %u)\n",
|
|
win->idx, win->flags, win->fmt, dfixed_trunc(win->x),
|
|
dfixed_trunc(win->y), dfixed_trunc(win->w),
|
|
dfixed_trunc(win->h), win->out_x, win->out_y, win->out_w,
|
|
win->out_h);
|
|
}
|
|
|
|
int esc_mods_tegra_dc_config_possible(struct file *fp,
|
|
struct MODS_TEGRA_DC_CONFIG_POSSIBLE *args)
|
|
{
|
|
int i;
|
|
struct tegra_dc *dc = tegra_dc_get_dc(args->head);
|
|
struct tegra_dc_win *dc_wins[DC_N_WINDOWS];
|
|
#ifndef CONFIG_TEGRA_ISOMGR
|
|
struct clk *emc_clk = 0;
|
|
unsigned long max_bandwidth = 0;
|
|
unsigned long current_emc_freq = 0;
|
|
unsigned long max_available_bandwidth = 0;
|
|
#else
|
|
int ret = -EINVAL;
|
|
#endif
|
|
|
|
LOG_ENT();
|
|
|
|
BUG_ON(args->win_num > tegra_dc_get_numof_dispwindows());
|
|
|
|
if (!dc) {
|
|
LOG_EXT();
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < args->win_num; i++) {
|
|
int idx = args->windows[i].index;
|
|
|
|
if (args->windows[i].flags &
|
|
MODS_TEGRA_DC_WINDOW_FLAG_ENABLED) {
|
|
mods_tegra_dc_set_windowattr_basic(&dc->tmp_wins[idx],
|
|
&args->windows[i]);
|
|
} else {
|
|
dc->tmp_wins[idx].flags = 0;
|
|
}
|
|
dc_wins[i] = &dc->tmp_wins[idx];
|
|
mods_debug_printk(DEBUG_TEGRADC,
|
|
"head %u, using index %d for win %d\n",
|
|
args->head, i, idx);
|
|
}
|
|
|
|
mods_debug_printk(DEBUG_TEGRADC,
|
|
"head %u, dc->mode.pclk %u\n",
|
|
args->head, dc->mode.pclk);
|
|
|
|
#ifndef CONFIG_TEGRA_ISOMGR
|
|
max_bandwidth = tegra_dc_get_bandwidth(dc_wins, args->win_num);
|
|
|
|
emc_clk = clk_get_sys("tegra_emc", "emc");
|
|
if (IS_ERR(emc_clk)) {
|
|
mods_debug_printk(DEBUG_TEGRADC,
|
|
"invalid clock specified when fetching EMC clock\n");
|
|
} else {
|
|
current_emc_freq = clk_get_rate(emc_clk);
|
|
current_emc_freq /= 1000;
|
|
max_available_bandwidth =
|
|
8 * tegra_emc_freq_req_to_bw(current_emc_freq);
|
|
max_available_bandwidth = (max_available_bandwidth / 100) * 50;
|
|
}
|
|
|
|
mods_debug_printk(DEBUG_TEGRADC,
|
|
"b/w needed %lu, b/w available %lu\n",
|
|
max_bandwidth, max_available_bandwidth);
|
|
|
|
args->possible = (max_bandwidth <= max_available_bandwidth);
|
|
#else
|
|
ret = tegra_dc_bandwidth_negotiate_bw(dc, dc_wins, args->win_num);
|
|
args->possible = (ret == 0);
|
|
#endif
|
|
for (i = 0; i < args->win_num; i++) {
|
|
args->windows[i].bandwidth = dc_wins[i]->new_bandwidth;
|
|
mods_debug_printk(DEBUG_TEGRADC,
|
|
"head %u, win %d, b/w %d\n",
|
|
args->head, dc_wins[i]->idx, dc_wins[i]->new_bandwidth);
|
|
}
|
|
|
|
LOG_EXT();
|
|
return 0;
|
|
}
|
|
|
|
int mods_init_tegradc(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|