1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/mmio.h>
#include <soc/clock.h>
#include <soc/display/mdssreg.h>
void enable_mdss_clk(void)
{
mdss_clock_enable(GCC_DISP_AHB);
// enable gdsc before enabling clocks.
clock_enable_gdsc(MDSS_CORE_GDSC);
mdss_clock_enable(GCC_DISP_HF_AXI);
mdss_clock_enable(GCC_DISP_SF_AXI);
mdss_clock_enable(MDSS_CLK_AHB);
mdss_clock_configure(MDSS_CLK_MDP, 400 * MHz, 0, 0, 0, 0, 0);
mdss_clock_enable(MDSS_CLK_MDP);
mdss_clock_configure(MDSS_CLK_VSYNC, 0, 0, 0, 0, 0, 0);
mdss_clock_enable(MDSS_CLK_VSYNC);
}
void mdss_intf_tg_setup(struct edid *edid)
{
uint32_t hsync_period, vsync_period;
uint32_t active_vstart, active_vend, active_hctl;
uint32_t display_hctl, hsync_ctl, display_vstart, display_vend;
hsync_period = edid->mode.ha + edid->mode.hbl;
vsync_period = edid->mode.va + edid->mode.vbl;
display_vstart = (edid->mode.vbl - edid->mode.vso) * hsync_period +
edid->mode.hbl - edid->mode.hso;
display_vend = ((vsync_period - edid->mode.vso) * hsync_period) - edid->mode.hso - 1;
hsync_ctl = (hsync_period << 16) | edid->mode.hspw;
active_vstart = display_vstart;
active_vend = active_vstart + (edid->mode.va * hsync_period) - 1;
active_hctl = ((edid->mode.hbl - edid->mode.hso + edid->mode.ha - 1) << 16) |
(edid->mode.hbl - edid->mode.hso);
display_hctl = active_hctl;
write32(&mdp_intf->intf_active_v_start_f0, active_vstart);
write32(&mdp_intf->intf_active_v_end_f0, active_vend);
write32(&mdp_intf->intf_active_hctl, active_hctl);
write32(&mdp_intf->display_data_hctl, display_hctl);
write32(&mdp_intf->intf_hsync_ctl, hsync_ctl);
write32(&mdp_intf->intf_vysnc_period_f0, vsync_period * hsync_period);
write32(&mdp_intf->intf_vysnc_pulse_width_f0, edid->mode.vspw * hsync_period);
write32(&mdp_intf->intf_disp_hctl, display_hctl);
write32(&mdp_intf->intf_disp_v_start_f0, display_vstart);
write32(&mdp_intf->intf_disp_v_end_f0, display_vend);
write32(&mdp_intf->intf_underflow_color, 0x00);
}
void mdss_ctrl_config(void)
{
/* Select vigo pipe active */
write32(&mdp_ctl->ctl_fetch_pipe_active, FETCH_PIPE_VIG0_ACTIVE);
/* PPB0 to INTF1 */
write32(&mdp_ctl->ctl_intf_active, INTF_ACTIVE_5);
}
|
