2 * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
3 * Copyright (c) 2015 Google, Inc
4 * Copyright 2014 Rockchip Inc.
6 * SPDX-License-Identifier: GPL-2.0+
15 #include <asm/hardware.h>
17 #include <asm/arch/clock.h>
18 #include <asm/arch/grf_rk3288.h>
21 DECLARE_GLOBAL_DATA_PTR
;
23 static void rk3288_set_pin_polarity(struct udevice
*dev
,
24 enum vop_modes mode
, u32 polarity
)
26 struct rk_vop_priv
*priv
= dev_get_priv(dev
);
27 struct rk3288_vop
*regs
= priv
->regs
;
29 /* The RK3328 VOP (v3.1) has its polarity configuration in ctrl0 */
30 clrsetbits_le32(®s
->dsp_ctrl0
,
31 M_DSP_DCLK_POL
| M_DSP_DEN_POL
|
32 M_DSP_VSYNC_POL
| M_DSP_HSYNC_POL
,
33 V_DSP_PIN_POL(polarity
));
36 static void rk3288_set_io_vsel(struct udevice
*dev
)
38 struct rk3288_grf
*grf
= syscon_get_first_range(ROCKCHIP_SYSCON_GRF
);
40 /* lcdc(vop) iodomain select 1.8V */
41 rk_setreg(&grf
->io_vsel
, 1 << 0);
45 * Try some common regulators. We should really get these from the
46 * device tree somehow.
48 static const char * const rk3288_regulator_names
[] = {
57 static int rk3288_vop_probe(struct udevice
*dev
)
59 /* Before relocation we don't need to do anything */
60 if (!(gd
->flags
& GD_FLG_RELOC
))
63 /* Set the LCDC(vop) iodomain to 1.8V */
64 rk3288_set_io_vsel(dev
);
66 /* Probe regulators required for the RK3288 VOP */
67 rk_vop_probe_regulators(dev
, rk3288_regulator_names
,
68 ARRAY_SIZE(rk3288_regulator_names
));
70 return rk_vop_probe(dev
);
73 static int rk_vop_remove(struct udevice
*dev
)
75 struct rk_vop_priv
*priv
= dev_get_priv(dev
);
76 struct rk3288_vop
*regs
= priv
->regs
;
78 setbits_le32(®s
->sys_ctrl
, V_STANDBY_EN(1));
80 /* wait frame complete (60Hz) to enter standby */
86 struct rkvop_driverdata rk3288_driverdata
= {
87 .features
= VOP_FEATURE_OUTPUT_10BIT
,
88 .set_pin_polarity
= rk3288_set_pin_polarity
,
91 static const struct udevice_id rk3288_vop_ids
[] = {
92 { .compatible
= "rockchip,rk3288-vop",
93 .data
= (ulong
)&rk3288_driverdata
},
97 static const struct video_ops rk3288_vop_ops
= {
100 U_BOOT_DRIVER(rk_vop
) = {
101 .name
= "rk3288_vop",
103 .of_match
= rk3288_vop_ids
,
104 .ops
= &rk3288_vop_ops
,
106 .probe
= rk3288_vop_probe
,
107 .remove
= rk_vop_remove
,
108 .priv_auto_alloc_size
= sizeof(struct rk_vop_priv
),