1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
4 * Copyright (c) 2015 Google, Inc
5 * Copyright 2014 Rockchip Inc.
14 #include <asm/hardware.h>
16 #include <asm/arch/clock.h>
17 #include <asm/arch/grf_rk3288.h>
20 DECLARE_GLOBAL_DATA_PTR
;
22 static void rk3288_set_pin_polarity(struct udevice
*dev
,
23 enum vop_modes mode
, u32 polarity
)
25 struct rk_vop_priv
*priv
= dev_get_priv(dev
);
26 struct rk3288_vop
*regs
= priv
->regs
;
28 /* The RK3328 VOP (v3.1) has its polarity configuration in ctrl0 */
29 clrsetbits_le32(®s
->dsp_ctrl0
,
30 M_DSP_DCLK_POL
| M_DSP_DEN_POL
|
31 M_DSP_VSYNC_POL
| M_DSP_HSYNC_POL
,
32 V_DSP_PIN_POL(polarity
));
35 static void rk3288_set_io_vsel(struct udevice
*dev
)
37 struct rk3288_grf
*grf
= syscon_get_first_range(ROCKCHIP_SYSCON_GRF
);
39 /* lcdc(vop) iodomain select 1.8V */
40 rk_setreg(&grf
->io_vsel
, 1 << 0);
44 * Try some common regulators. We should really get these from the
45 * device tree somehow.
47 static const char * const rk3288_regulator_names
[] = {
56 static int rk3288_vop_probe(struct udevice
*dev
)
58 /* Before relocation we don't need to do anything */
59 if (!(gd
->flags
& GD_FLG_RELOC
))
62 /* Set the LCDC(vop) iodomain to 1.8V */
63 rk3288_set_io_vsel(dev
);
65 /* Probe regulators required for the RK3288 VOP */
66 rk_vop_probe_regulators(dev
, rk3288_regulator_names
,
67 ARRAY_SIZE(rk3288_regulator_names
));
69 return rk_vop_probe(dev
);
72 static int rk_vop_remove(struct udevice
*dev
)
74 struct rk_vop_priv
*priv
= dev_get_priv(dev
);
75 struct rk3288_vop
*regs
= priv
->regs
;
77 setbits_le32(®s
->sys_ctrl
, V_STANDBY_EN(1));
79 /* wait frame complete (60Hz) to enter standby */
85 struct rkvop_driverdata rk3288_driverdata
= {
86 .features
= VOP_FEATURE_OUTPUT_10BIT
,
87 .set_pin_polarity
= rk3288_set_pin_polarity
,
90 static const struct udevice_id rk3288_vop_ids
[] = {
91 { .compatible
= "rockchip,rk3288-vop",
92 .data
= (ulong
)&rk3288_driverdata
},
96 static const struct video_ops rk3288_vop_ops
= {
99 U_BOOT_DRIVER(rk_vop
) = {
100 .name
= "rk3288_vop",
102 .of_match
= rk3288_vop_ids
,
103 .ops
= &rk3288_vop_ops
,
105 .probe
= rk3288_vop_probe
,
106 .remove
= rk_vop_remove
,
107 .priv_auto_alloc_size
= sizeof(struct rk_vop_priv
),