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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
- * Copyright (c) 2015 Google, Inc
- * Copyright 2014 Rockchip Inc.
- */
- #include <common.h>
- #include <display.h>
- #include <dm.h>
- #include <regmap.h>
- #include <syscon.h>
- #include <video.h>
- #include <asm/io.h>
- #include <asm/arch-rockchip/clock.h>
- #include <asm/arch-rockchip/grf_rk3288.h>
- #include <asm/arch-rockchip/hardware.h>
- #include <linux/delay.h>
- #include "rk_vop.h"
- DECLARE_GLOBAL_DATA_PTR;
- static void rk3288_set_pin_polarity(struct udevice *dev,
- enum vop_modes mode, u32 polarity)
- {
- struct rk_vop_priv *priv = dev_get_priv(dev);
- struct rk3288_vop *regs = priv->regs;
- /* The RK3328 VOP (v3.1) has its polarity configuration in ctrl0 */
- clrsetbits_le32(®s->dsp_ctrl0,
- M_DSP_DCLK_POL | M_DSP_DEN_POL |
- M_DSP_VSYNC_POL | M_DSP_HSYNC_POL,
- V_DSP_PIN_POL(polarity));
- }
- static void rk3288_set_io_vsel(struct udevice *dev)
- {
- struct rk3288_grf *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
- /* lcdc(vop) iodomain select 1.8V */
- rk_setreg(&grf->io_vsel, 1 << 0);
- }
- /*
- * Try some common regulators. We should really get these from the
- * device tree somehow.
- */
- static const char * const rk3288_regulator_names[] = {
- "vcc18_lcd",
- "VCC18_LCD",
- "vdd10_lcd_pwren_h",
- "vdd10_lcd",
- "VDD10_LCD",
- "vcc33_lcd"
- };
- static int rk3288_vop_probe(struct udevice *dev)
- {
- /* Before relocation we don't need to do anything */
- if (!(gd->flags & GD_FLG_RELOC))
- return 0;
- /* Set the LCDC(vop) iodomain to 1.8V */
- rk3288_set_io_vsel(dev);
- /* Probe regulators required for the RK3288 VOP */
- rk_vop_probe_regulators(dev, rk3288_regulator_names,
- ARRAY_SIZE(rk3288_regulator_names));
- return rk_vop_probe(dev);
- }
- static int rk_vop_remove(struct udevice *dev)
- {
- struct rk_vop_priv *priv = dev_get_priv(dev);
- struct rk3288_vop *regs = priv->regs;
- setbits_le32(®s->sys_ctrl, V_STANDBY_EN(1));
- /* wait frame complete (60Hz) to enter standby */
- mdelay(17);
- return 0;
- }
- struct rkvop_driverdata rk3288_driverdata = {
- .features = VOP_FEATURE_OUTPUT_10BIT,
- .set_pin_polarity = rk3288_set_pin_polarity,
- };
- static const struct udevice_id rk3288_vop_ids[] = {
- { .compatible = "rockchip,rk3288-vop",
- .data = (ulong)&rk3288_driverdata },
- { }
- };
- static const struct video_ops rk3288_vop_ops = {
- };
- U_BOOT_DRIVER(rockchip_rk3288_vop) = {
- .name = "rockchip_rk3288_vop",
- .id = UCLASS_VIDEO,
- .of_match = rk3288_vop_ids,
- .ops = &rk3288_vop_ops,
- .bind = rk_vop_bind,
- .probe = rk3288_vop_probe,
- .remove = rk_vop_remove,
- .priv_auto_alloc_size = sizeof(struct rk_vop_priv),
- };
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