linux/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h
Maxime Ripard 85fb352666
drm/sun4i: dsi: Restrict DSI tcon clock divider
The current code allows the TCON clock divider to have a range between 4
and 127 when feeding the DSI controller.

The only display supported so far had a display clock rate that ended up
using a divider of 4, but testing with other displays show that only 4
seems to be functional.

This also aligns with what Allwinner is doing in their BSP, so let's just
hardcode that we want a divider of 4 when using the DSI output.

Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/074e88ae472f5e0492e26939c74b44fb4125ffbd.1549896081.git-series.maxime.ripard@bootlin.com
2019-02-19 11:08:17 +01:00

51 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2016 Allwinnertech Co., Ltd.
* Copyright (C) 2017-2018 Bootlin
*
* Maxime Ripard <maxime.ripard@bootlin.com>
*/
#ifndef _SUN6I_MIPI_DSI_H_
#define _SUN6I_MIPI_DSI_H_
#include <drm/drm_connector.h>
#include <drm/drm_encoder.h>
#include <drm/drm_mipi_dsi.h>
#define SUN6I_DSI_TCON_DIV 4
struct sun6i_dsi {
struct drm_connector connector;
struct drm_encoder encoder;
struct mipi_dsi_host host;
struct clk *bus_clk;
struct clk *mod_clk;
struct regmap *regs;
struct reset_control *reset;
struct phy *dphy;
struct device *dev;
struct sun4i_drv *drv;
struct mipi_dsi_device *device;
struct drm_panel *panel;
};
static inline struct sun6i_dsi *host_to_sun6i_dsi(struct mipi_dsi_host *host)
{
return container_of(host, struct sun6i_dsi, host);
};
static inline struct sun6i_dsi *connector_to_sun6i_dsi(struct drm_connector *connector)
{
return container_of(connector, struct sun6i_dsi, connector);
};
static inline struct sun6i_dsi *encoder_to_sun6i_dsi(const struct drm_encoder *encoder)
{
return container_of(encoder, struct sun6i_dsi, encoder);
};
#endif /* _SUN6I_MIPI_DSI_H_ */