mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Russell King](/assets/img/avatar_default.png)
The phy comments in dw_hdmi.c applied to the iMX6 version. Move these comments to the iMX6 dw_hdmi-imx data along side the data. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
289 lines
7 KiB
C
289 lines
7 KiB
C
/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
|
|
*
|
|
* derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/component.h>
|
|
#include <linux/mfd/syscon.h>
|
|
#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
|
|
#include <drm/bridge/dw_hdmi.h>
|
|
#include <video/imx-ipu-v3.h>
|
|
#include <linux/regmap.h>
|
|
#include <drm/drm_of.h>
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_edid.h>
|
|
#include <drm/drm_encoder_slave.h>
|
|
|
|
#include "imx-drm.h"
|
|
|
|
struct imx_hdmi {
|
|
struct device *dev;
|
|
struct drm_encoder encoder;
|
|
struct regmap *regmap;
|
|
};
|
|
|
|
static const struct dw_hdmi_mpll_config imx_mpll_cfg[] = {
|
|
{
|
|
45250000, {
|
|
{ 0x01e0, 0x0000 },
|
|
{ 0x21e1, 0x0000 },
|
|
{ 0x41e2, 0x0000 }
|
|
},
|
|
}, {
|
|
92500000, {
|
|
{ 0x0140, 0x0005 },
|
|
{ 0x2141, 0x0005 },
|
|
{ 0x4142, 0x0005 },
|
|
},
|
|
}, {
|
|
148500000, {
|
|
{ 0x00a0, 0x000a },
|
|
{ 0x20a1, 0x000a },
|
|
{ 0x40a2, 0x000a },
|
|
},
|
|
}, {
|
|
~0UL, {
|
|
{ 0x00a0, 0x000a },
|
|
{ 0x2001, 0x000f },
|
|
{ 0x4002, 0x000f },
|
|
},
|
|
}
|
|
};
|
|
|
|
static const struct dw_hdmi_curr_ctrl imx_cur_ctr[] = {
|
|
/* pixelclk bpp8 bpp10 bpp12 */
|
|
{
|
|
54000000, { 0x091c, 0x091c, 0x06dc },
|
|
}, {
|
|
58400000, { 0x091c, 0x06dc, 0x06dc },
|
|
}, {
|
|
72000000, { 0x06dc, 0x06dc, 0x091c },
|
|
}, {
|
|
74250000, { 0x06dc, 0x0b5c, 0x091c },
|
|
}, {
|
|
118800000, { 0x091c, 0x091c, 0x06dc },
|
|
}, {
|
|
216000000, { 0x06dc, 0x0b5c, 0x091c },
|
|
}, {
|
|
~0UL, { 0x0000, 0x0000, 0x0000 },
|
|
},
|
|
};
|
|
|
|
/*
|
|
* Resistance term 133Ohm Cfg
|
|
* PREEMP config 0.00
|
|
* TX/CK level 10
|
|
*/
|
|
static const struct dw_hdmi_phy_config imx_phy_config[] = {
|
|
/*pixelclk symbol term vlev */
|
|
{ 148500000, 0x800d, 0x0005, 0x01ad},
|
|
{ ~0UL, 0x0000, 0x0000, 0x0000}
|
|
};
|
|
|
|
static int dw_hdmi_imx_parse_dt(struct imx_hdmi *hdmi)
|
|
{
|
|
struct device_node *np = hdmi->dev->of_node;
|
|
|
|
hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr");
|
|
if (IS_ERR(hdmi->regmap)) {
|
|
dev_err(hdmi->dev, "Unable to get gpr\n");
|
|
return PTR_ERR(hdmi->regmap);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dw_hdmi_imx_encoder_disable(struct drm_encoder *encoder)
|
|
{
|
|
}
|
|
|
|
static bool dw_hdmi_imx_encoder_mode_fixup(struct drm_encoder *encoder,
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adj_mode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void dw_hdmi_imx_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adj_mode)
|
|
{
|
|
}
|
|
|
|
static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
|
|
{
|
|
struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder);
|
|
int mux = imx_drm_encoder_get_mux_id(hdmi->dev->of_node, encoder);
|
|
|
|
regmap_update_bits(hdmi->regmap, IOMUXC_GPR3,
|
|
IMX6Q_GPR3_HDMI_MUX_CTL_MASK,
|
|
mux << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT);
|
|
}
|
|
|
|
static void dw_hdmi_imx_encoder_prepare(struct drm_encoder *encoder)
|
|
{
|
|
imx_drm_set_bus_format(encoder, MEDIA_BUS_FMT_RGB888_1X24);
|
|
}
|
|
|
|
static struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = {
|
|
.mode_fixup = dw_hdmi_imx_encoder_mode_fixup,
|
|
.mode_set = dw_hdmi_imx_encoder_mode_set,
|
|
.prepare = dw_hdmi_imx_encoder_prepare,
|
|
.commit = dw_hdmi_imx_encoder_commit,
|
|
.disable = dw_hdmi_imx_encoder_disable,
|
|
};
|
|
|
|
static struct drm_encoder_funcs dw_hdmi_imx_encoder_funcs = {
|
|
.destroy = drm_encoder_cleanup,
|
|
};
|
|
|
|
static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
if (mode->clock < 13500)
|
|
return MODE_CLOCK_LOW;
|
|
if (mode->clock > 266000)
|
|
return MODE_CLOCK_HIGH;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static enum drm_mode_status imx6dl_hdmi_mode_valid(struct drm_connector *con,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
if (mode->clock < 13500)
|
|
return MODE_CLOCK_LOW;
|
|
if (mode->clock > 270000)
|
|
return MODE_CLOCK_HIGH;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static struct dw_hdmi_plat_data imx6q_hdmi_drv_data = {
|
|
.mpll_cfg = imx_mpll_cfg,
|
|
.cur_ctr = imx_cur_ctr,
|
|
.phy_config = imx_phy_config,
|
|
.dev_type = IMX6Q_HDMI,
|
|
.mode_valid = imx6q_hdmi_mode_valid,
|
|
};
|
|
|
|
static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = {
|
|
.mpll_cfg = imx_mpll_cfg,
|
|
.cur_ctr = imx_cur_ctr,
|
|
.phy_config = imx_phy_config,
|
|
.dev_type = IMX6DL_HDMI,
|
|
.mode_valid = imx6dl_hdmi_mode_valid,
|
|
};
|
|
|
|
static const struct of_device_id dw_hdmi_imx_dt_ids[] = {
|
|
{ .compatible = "fsl,imx6q-hdmi",
|
|
.data = &imx6q_hdmi_drv_data
|
|
}, {
|
|
.compatible = "fsl,imx6dl-hdmi",
|
|
.data = &imx6dl_hdmi_drv_data
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, dw_hdmi_imx_dt_ids);
|
|
|
|
static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
const struct dw_hdmi_plat_data *plat_data;
|
|
const struct of_device_id *match;
|
|
struct drm_device *drm = data;
|
|
struct drm_encoder *encoder;
|
|
struct imx_hdmi *hdmi;
|
|
struct resource *iores;
|
|
int irq;
|
|
int ret;
|
|
|
|
if (!pdev->dev.of_node)
|
|
return -ENODEV;
|
|
|
|
hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
|
|
if (!hdmi)
|
|
return -ENOMEM;
|
|
|
|
match = of_match_node(dw_hdmi_imx_dt_ids, pdev->dev.of_node);
|
|
plat_data = match->data;
|
|
hdmi->dev = &pdev->dev;
|
|
encoder = &hdmi->encoder;
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!iores)
|
|
return -ENXIO;
|
|
|
|
platform_set_drvdata(pdev, hdmi);
|
|
|
|
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
|
|
/*
|
|
* If we failed to find the CRTC(s) which this encoder is
|
|
* supposed to be connected to, it's because the CRTC has
|
|
* not been registered yet. Defer probing, and hope that
|
|
* the required CRTC is added later.
|
|
*/
|
|
if (encoder->possible_crtcs == 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
ret = dw_hdmi_imx_parse_dt(hdmi);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
drm_encoder_helper_add(encoder, &dw_hdmi_imx_encoder_helper_funcs);
|
|
drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
|
|
DRM_MODE_ENCODER_TMDS);
|
|
|
|
return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
|
|
}
|
|
|
|
static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
return dw_hdmi_unbind(dev, master, data);
|
|
}
|
|
|
|
static const struct component_ops dw_hdmi_imx_ops = {
|
|
.bind = dw_hdmi_imx_bind,
|
|
.unbind = dw_hdmi_imx_unbind,
|
|
};
|
|
|
|
static int dw_hdmi_imx_probe(struct platform_device *pdev)
|
|
{
|
|
return component_add(&pdev->dev, &dw_hdmi_imx_ops);
|
|
}
|
|
|
|
static int dw_hdmi_imx_remove(struct platform_device *pdev)
|
|
{
|
|
component_del(&pdev->dev, &dw_hdmi_imx_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver dw_hdmi_imx_platform_driver = {
|
|
.probe = dw_hdmi_imx_probe,
|
|
.remove = dw_hdmi_imx_remove,
|
|
.driver = {
|
|
.name = "dwhdmi-imx",
|
|
.of_match_table = dw_hdmi_imx_dt_ids,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(dw_hdmi_imx_platform_driver);
|
|
|
|
MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
|
|
MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
|
|
MODULE_DESCRIPTION("IMX6 Specific DW-HDMI Driver Extension");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:dwhdmi-imx");
|