diff options
| author | Jernej Skrabec <jernej.skrabec@siol.net> | 2018-06-25 15:02:45 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@bootlin.com> | 2018-06-27 22:43:48 +0300 |
| commit | 19f3ebed3f3612f97ee28af26d53656f5776f89a (patch) | |
| tree | dc25afd77aed23c904a796fd9da1dfac5265b9ac /drivers/gpu/drm/sun4i/sun8i_tcon_top.h | |
| parent | 59a9c39544cd1e5952c2a33028d71aa8180648f8 (diff) | |
| download | linux-19f3ebed3f3612f97ee28af26d53656f5776f89a.tar.xz | |
drm/sun4i: Add TCON TOP driver
As already described in DT binding, TCON TOP is responsible for
configuring display pipeline. In this initial driver focus is on HDMI
pipeline, so TVE and LCD configuration is not implemented.
Implemented features:
- HDMI source selection
- clock driver (TCON and DSI gating)
- connecting mixers and TCONS
Something similar also existed in previous SoCs, except that it was part
of first TCON.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180625120304.7543-6-jernej.skrabec@siol.net
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun8i_tcon_top.h')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun8i_tcon_top.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun8i_tcon_top.h b/drivers/gpu/drm/sun4i/sun8i_tcon_top.h new file mode 100644 index 000000000000..39838bbfeaee --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun8i_tcon_top.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (c) 2018 Jernej Skrabec <jernej.skrabec@siol.net> */ + +#ifndef _SUN8I_TCON_TOP_H_ +#define _SUN8I_TCON_TOP_H_ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/reset.h> +#include <linux/spinlock.h> + +#define TCON_TOP_TCON_TV_SETUP_REG 0x00 + +#define TCON_TOP_PORT_SEL_REG 0x1C +#define TCON_TOP_PORT_DE0_MSK GENMASK(1, 0) +#define TCON_TOP_PORT_DE1_MSK GENMASK(5, 4) + +#define TCON_TOP_GATE_SRC_REG 0x20 +#define TCON_TOP_HDMI_SRC_MSK GENMASK(29, 28) +#define TCON_TOP_TCON_TV1_GATE 24 +#define TCON_TOP_TCON_TV0_GATE 20 +#define TCON_TOP_TCON_DSI_GATE 16 + +#define CLK_NUM 3 + +struct sun8i_tcon_top { + struct clk *bus; + struct clk_hw_onecell_data *clk_data; + struct reset_control *rst; + + /* + * spinlock is used to synchronize access to same + * register where multiple clock gates can be set. + */ + spinlock_t reg_lock; +}; + +extern const struct of_device_id sun8i_tcon_top_of_table[]; + +#endif /* _SUN8I_TCON_TOP_H_ */ |