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linux/drivers/gpu/drm/bridge/adv7511/adv7533.c

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drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
/*
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
drm/bridge: adv7533: Create a MIPI DSI device In order to pass DSI specific parameters to the DSI host, we need the driver to create a mipi_dsi_device DSI device that attaches to the host. Use of_graph helpers to get the DSI host DT node. Create a MIPI DSI device using this host. Finally, attach this device to the DSI host. Populate DT parameters (number of data lanes for now) that are required for DSI RX to work correctly. Hardcode few other parameters (rgb, embedded_sync) for now. Select DRM_MIPI_DSI config option only when ADV7533 support is enabled. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:01:27 +05:30
#include <linux/of_graph.h>
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
#include "adv7511.h"
static const struct reg_sequence adv7533_fixed_registers[] = {
{ 0x16, 0x20 },
{ 0x9a, 0xe0 },
{ 0xba, 0x70 },
{ 0xde, 0x82 },
{ 0xe4, 0x40 },
{ 0xe5, 0x80 },
};
static const struct reg_sequence adv7533_cec_fixed_registers[] = {
{ 0x15, 0xd0 },
{ 0x17, 0xd0 },
{ 0x24, 0x20 },
{ 0x57, 0x11 },
drm/bridge: adv7511: Enable the audio data and clock pads on adv7533 This patch enables the Audio Data and Clock pads to the adv7533 bridge. Without this patch audio can not be played. Cc: David Airlie <airlied@linux.ie> Cc: Archit Taneja <architt@codeaurora.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Andy Green <andy@warmcat.com> Cc: Dave Long <dave.long@linaro.org> Cc: Guodong Xu <guodong.xu@linaro.org> Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Mark Brown <broonie@kernel.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jose Abreu <joabreu@synopsys.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1480382552-28219-3-git-send-email-john.stultz@linaro.org
2016-11-28 17:22:32 -08:00
{ 0x05, 0xc8 },
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
};
static const struct regmap_config adv7533_cec_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0xff,
.cache_type = REGCACHE_RBTREE,
};
drm/bridge: adv7533: Use internal timing generator ADV7533 provides an internal timing generator for certain modes that it can't use the DSI clock directly. We've observed that HDMI is more stable with the internal timing generator, especially if there are instabilities in the DSI clock source. The data spec also seems to recommend the usage of the timing generator for all modes. However, on some platforms, it's reported that enabling the timing generator causes instabilities with the HDMI output. Create a DT parameter that lets a platform explicitly disable the timing generator. The timing generator is enabled by default. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:03:12 +05:30
static void adv7511_dsi_config_timing_gen(struct adv7511 *adv)
{
struct mipi_dsi_device *dsi = adv->dsi;
struct drm_display_mode *mode = &adv->curr_mode;
unsigned int hsw, hfp, hbp, vsw, vfp, vbp;
u8 clock_div_by_lanes[] = { 6, 4, 3 }; /* 2, 3, 4 lanes */
hsw = mode->hsync_end - mode->hsync_start;
hfp = mode->hsync_start - mode->hdisplay;
hbp = mode->htotal - mode->hsync_end;
vsw = mode->vsync_end - mode->vsync_start;
vfp = mode->vsync_start - mode->vdisplay;
vbp = mode->vtotal - mode->vsync_end;
/* set pixel clock divider mode */
regmap_write(adv->regmap_cec, 0x16,
clock_div_by_lanes[dsi->lanes - 2] << 3);
/* horizontal porch params */
regmap_write(adv->regmap_cec, 0x28, mode->htotal >> 4);
regmap_write(adv->regmap_cec, 0x29, (mode->htotal << 4) & 0xff);
regmap_write(adv->regmap_cec, 0x2a, hsw >> 4);
regmap_write(adv->regmap_cec, 0x2b, (hsw << 4) & 0xff);
regmap_write(adv->regmap_cec, 0x2c, hfp >> 4);
regmap_write(adv->regmap_cec, 0x2d, (hfp << 4) & 0xff);
regmap_write(adv->regmap_cec, 0x2e, hbp >> 4);
regmap_write(adv->regmap_cec, 0x2f, (hbp << 4) & 0xff);
/* vertical porch params */
regmap_write(adv->regmap_cec, 0x30, mode->vtotal >> 4);
regmap_write(adv->regmap_cec, 0x31, (mode->vtotal << 4) & 0xff);
regmap_write(adv->regmap_cec, 0x32, vsw >> 4);
regmap_write(adv->regmap_cec, 0x33, (vsw << 4) & 0xff);
regmap_write(adv->regmap_cec, 0x34, vfp >> 4);
regmap_write(adv->regmap_cec, 0x35, (vfp << 4) & 0xff);
regmap_write(adv->regmap_cec, 0x36, vbp >> 4);
regmap_write(adv->regmap_cec, 0x37, (vbp << 4) & 0xff);
}
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
void adv7533_dsi_power_on(struct adv7511 *adv)
{
drm/bridge: adv7533: Create a MIPI DSI device In order to pass DSI specific parameters to the DSI host, we need the driver to create a mipi_dsi_device DSI device that attaches to the host. Use of_graph helpers to get the DSI host DT node. Create a MIPI DSI device using this host. Finally, attach this device to the DSI host. Populate DT parameters (number of data lanes for now) that are required for DSI RX to work correctly. Hardcode few other parameters (rgb, embedded_sync) for now. Select DRM_MIPI_DSI config option only when ADV7533 support is enabled. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:01:27 +05:30
struct mipi_dsi_device *dsi = adv->dsi;
drm/bridge: adv7533: Use internal timing generator ADV7533 provides an internal timing generator for certain modes that it can't use the DSI clock directly. We've observed that HDMI is more stable with the internal timing generator, especially if there are instabilities in the DSI clock source. The data spec also seems to recommend the usage of the timing generator for all modes. However, on some platforms, it's reported that enabling the timing generator causes instabilities with the HDMI output. Create a DT parameter that lets a platform explicitly disable the timing generator. The timing generator is enabled by default. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:03:12 +05:30
if (adv->use_timing_gen)
adv7511_dsi_config_timing_gen(adv);
drm/bridge: adv7533: Create a MIPI DSI device In order to pass DSI specific parameters to the DSI host, we need the driver to create a mipi_dsi_device DSI device that attaches to the host. Use of_graph helpers to get the DSI host DT node. Create a MIPI DSI device using this host. Finally, attach this device to the DSI host. Populate DT parameters (number of data lanes for now) that are required for DSI RX to work correctly. Hardcode few other parameters (rgb, embedded_sync) for now. Select DRM_MIPI_DSI config option only when ADV7533 support is enabled. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:01:27 +05:30
/* set number of dsi lanes */
regmap_write(adv->regmap_cec, 0x1c, dsi->lanes << 4);
drm/bridge: adv7533: Use internal timing generator ADV7533 provides an internal timing generator for certain modes that it can't use the DSI clock directly. We've observed that HDMI is more stable with the internal timing generator, especially if there are instabilities in the DSI clock source. The data spec also seems to recommend the usage of the timing generator for all modes. However, on some platforms, it's reported that enabling the timing generator causes instabilities with the HDMI output. Create a DT parameter that lets a platform explicitly disable the timing generator. The timing generator is enabled by default. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:03:12 +05:30
if (adv->use_timing_gen) {
/* reset internal timing generator */
regmap_write(adv->regmap_cec, 0x27, 0xcb);
regmap_write(adv->regmap_cec, 0x27, 0x8b);
regmap_write(adv->regmap_cec, 0x27, 0xcb);
} else {
/* disable internal timing generator */
regmap_write(adv->regmap_cec, 0x27, 0x0b);
}
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
/* enable hdmi */
regmap_write(adv->regmap_cec, 0x03, 0x89);
/* disable test mode */
regmap_write(adv->regmap_cec, 0x55, 0x00);
regmap_register_patch(adv->regmap_cec, adv7533_cec_fixed_registers,
ARRAY_SIZE(adv7533_cec_fixed_registers));
}
void adv7533_dsi_power_off(struct adv7511 *adv)
{
/* disable hdmi */
regmap_write(adv->regmap_cec, 0x03, 0x0b);
drm/bridge: adv7533: Use internal timing generator ADV7533 provides an internal timing generator for certain modes that it can't use the DSI clock directly. We've observed that HDMI is more stable with the internal timing generator, especially if there are instabilities in the DSI clock source. The data spec also seems to recommend the usage of the timing generator for all modes. However, on some platforms, it's reported that enabling the timing generator causes instabilities with the HDMI output. Create a DT parameter that lets a platform explicitly disable the timing generator. The timing generator is enabled by default. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:03:12 +05:30
/* disable internal timing generator */
regmap_write(adv->regmap_cec, 0x27, 0x0b);
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
}
drm/bridge: adv7533: Change number of DSI lanes dynamically Lower modes on ADV7533 require lower number of DSI lanes for correct operation. If ADV7533 is being used with 4 DSI lanes, then switch the lanes to 3 when the target mode's pixel clock is less than 80 Mhz. Based on patch by Andy Green <andy.green@linaro.org> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-17 12:15:52 +05:30
void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode)
{
struct mipi_dsi_device *dsi = adv->dsi;
int lanes, ret;
if (adv->num_dsi_lanes != 4)
return;
if (mode->clock > 80000)
lanes = 4;
else
lanes = 3;
if (lanes != dsi->lanes) {
mipi_dsi_detach(dsi);
dsi->lanes = lanes;
ret = mipi_dsi_attach(dsi);
if (ret)
dev_err(&dsi->dev, "failed to change host lanes\n");
}
}
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
int adv7533_patch_registers(struct adv7511 *adv)
{
return regmap_register_patch(adv->regmap,
adv7533_fixed_registers,
ARRAY_SIZE(adv7533_fixed_registers));
}
void adv7533_uninit_cec(struct adv7511 *adv)
{
i2c_unregister_device(adv->i2c_cec);
}
int adv7533_init_cec(struct adv7511 *adv)
{
int ret;
drm/bridge: adv7511: add support for the 2nd chip The Renesas Wheat board has 2 ADV7513 chips on the same I2C bus, however the ADV751x driver only supports 1 chip as it tries to assign the packet/ EDID/CEC memory I2C devices to the fixed I2C addresses. Assign these I2C addresses at the fixed offsets (derived from the programming guide) from the main register map address instead. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1580212.O1LYdJFM97@wasted.cogentembedded.com
2016-09-05 22:43:17 +03:00
adv->i2c_cec = i2c_new_dummy(adv->i2c_main->adapter,
adv->i2c_main->addr - 1);
drm/bridge: adv7533: Initial support for ADV7533 ADV7533 is a DSI to HDMI encoder chip. It is a derivative of ADV7511, with additional blocks to translate input DSI data to parallel RGB data. Besides the ADV7511 I2C register map, it has additional registers that require to be configured to activate the DSI Rx block. Create a new config that enables ADV7533 support. Use DT compatible strings to populate the ADV7533 type enum. Add minimal register configurations belonging to the DSI/CEC register map. Keep the ADV7533 code in a separate file. Originally worked on by Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 16:24:03 +05:30
if (!adv->i2c_cec)
return -ENOMEM;
adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
&adv7533_cec_regmap_config);
if (IS_ERR(adv->regmap_cec)) {
ret = PTR_ERR(adv->regmap_cec);
goto err;
}
ret = regmap_register_patch(adv->regmap_cec,
adv7533_cec_fixed_registers,
ARRAY_SIZE(adv7533_cec_fixed_registers));
if (ret)
goto err;
return 0;
err:
adv7533_uninit_cec(adv);
return ret;
}
drm/bridge: adv7533: Create a MIPI DSI device In order to pass DSI specific parameters to the DSI host, we need the driver to create a mipi_dsi_device DSI device that attaches to the host. Use of_graph helpers to get the DSI host DT node. Create a MIPI DSI device using this host. Finally, attach this device to the DSI host. Populate DT parameters (number of data lanes for now) that are required for DSI RX to work correctly. Hardcode few other parameters (rgb, embedded_sync) for now. Select DRM_MIPI_DSI config option only when ADV7533 support is enabled. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:01:27 +05:30
int adv7533_attach_dsi(struct adv7511 *adv)
{
struct device *dev = &adv->i2c_main->dev;
struct mipi_dsi_host *host;
struct mipi_dsi_device *dsi;
int ret = 0;
const struct mipi_dsi_device_info info = { .type = "adv7533",
.channel = 0,
.node = NULL,
};
host = of_find_mipi_dsi_host_by_node(adv->host_node);
if (!host) {
dev_err(dev, "failed to find dsi host\n");
return -EPROBE_DEFER;
}
dsi = mipi_dsi_device_register_full(host, &info);
if (IS_ERR(dsi)) {
dev_err(dev, "failed to create dsi device\n");
ret = PTR_ERR(dsi);
goto err_dsi_device;
}
adv->dsi = dsi;
dsi->lanes = adv->num_dsi_lanes;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
MIPI_DSI_MODE_EOT_PACKET | MIPI_DSI_MODE_VIDEO_HSE;
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "failed to attach dsi to host\n");
goto err_dsi_attach;
}
return 0;
err_dsi_attach:
mipi_dsi_device_unregister(dsi);
err_dsi_device:
return ret;
}
void adv7533_detach_dsi(struct adv7511 *adv)
{
mipi_dsi_detach(adv->dsi);
mipi_dsi_device_unregister(adv->dsi);
}
int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv)
{
u32 num_lanes;
struct device_node *endpoint;
of_property_read_u32(np, "adi,dsi-lanes", &num_lanes);
if (num_lanes < 1 || num_lanes > 4)
return -EINVAL;
adv->num_dsi_lanes = num_lanes;
endpoint = of_graph_get_next_endpoint(np, NULL);
if (!endpoint)
return -ENODEV;
adv->host_node = of_graph_get_remote_port_parent(endpoint);
if (!adv->host_node) {
of_node_put(endpoint);
return -ENODEV;
}
of_node_put(endpoint);
of_node_put(adv->host_node);
drm/bridge: adv7533: Use internal timing generator ADV7533 provides an internal timing generator for certain modes that it can't use the DSI clock directly. We've observed that HDMI is more stable with the internal timing generator, especially if there are instabilities in the DSI clock source. The data spec also seems to recommend the usage of the timing generator for all modes. However, on some platforms, it's reported that enabling the timing generator causes instabilities with the HDMI output. Create a DT parameter that lets a platform explicitly disable the timing generator. The timing generator is enabled by default. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:03:12 +05:30
adv->use_timing_gen = !of_property_read_bool(np,
"adi,disable-timing-generator");
drm/bridge: adv7533: Create a MIPI DSI device In order to pass DSI specific parameters to the DSI host, we need the driver to create a mipi_dsi_device DSI device that attaches to the host. Use of_graph helpers to get the DSI host DT node. Create a MIPI DSI device using this host. Finally, attach this device to the DSI host. Populate DT parameters (number of data lanes for now) that are required for DSI RX to work correctly. Hardcode few other parameters (rgb, embedded_sync) for now. Select DRM_MIPI_DSI config option only when ADV7533 support is enabled. Signed-off-by: Archit Taneja <architt@codeaurora.org>
2016-06-15 17:01:27 +05:30
/* TODO: Check if these need to be parsed by DT or not */
adv->rgb = true;
adv->embedded_sync = false;
return 0;
}
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