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path: root/drivers/video/rockchip/rk3288_vop.c
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Diffstat (limited to 'drivers/video/rockchip/rk3288_vop.c')
-rw-r--r--drivers/video/rockchip/rk3288_vop.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/video/rockchip/rk3288_vop.c b/drivers/video/rockchip/rk3288_vop.c
new file mode 100644
index 0000000000..e3e1ec728c
--- /dev/null
+++ b/drivers/video/rockchip/rk3288_vop.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
+ * Copyright (c) 2015 Google, Inc
+ * Copyright 2014 Rockchip Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <display.h>
+#include <dm.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <video.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/grf_rk3288.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(&regs->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);
+}
+
+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(rk_vop) = {
+ .name = "rk3288_vop",
+ .id = UCLASS_VIDEO,
+ .of_match = rk3288_vop_ids,
+ .ops = &rk3288_vop_ops,
+ .bind = rk_vop_bind,
+ .probe = rk3288_vop_probe,
+ .priv_auto_alloc_size = sizeof(struct rk_vop_priv),
+};