* [PATCH v6 1/7] drm/tilcdc: Fix module unloading
2015-05-27 9:22 [PATCH v6 0/7] Use DRM component API in tilcdc to connect to tda998x Jyri Sarha
@ 2015-05-27 9:22 ` Jyri Sarha
2015-05-27 9:22 ` [PATCH v6 2/7] drm/tilcdc: Remove tilcdc slave support for tda998x driver Jyri Sarha
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:22 UTC (permalink / raw)
To: dri-devel, airlied, linux-omap, devicetree, bcousson, tony
Cc: rmk+kernel, tomi.valkeinen, Jyri Sarha
Force crtc dpms off before destroying the crtc instead of just
checking the dpms state. This fixes warning message and frozen picture
after tilcdc module unloading.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
---
drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index c735884..c2d5980 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -135,11 +135,12 @@ static void stop(struct drm_crtc *crtc)
tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);
}
+static void tilcdc_crtc_dpms(struct drm_crtc *crtc, int mode);
static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
- WARN_ON(tilcdc_crtc->dpms == DRM_MODE_DPMS_ON);
+ tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
drm_crtc_cleanup(crtc);
drm_flip_work_cleanup(&tilcdc_crtc->unref_work);
--
1.9.1
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dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v6 2/7] drm/tilcdc: Remove tilcdc slave support for tda998x driver
2015-05-27 9:22 [PATCH v6 0/7] Use DRM component API in tilcdc to connect to tda998x Jyri Sarha
2015-05-27 9:22 ` [PATCH v6 1/7] drm/tilcdc: Fix module unloading Jyri Sarha
@ 2015-05-27 9:22 ` Jyri Sarha
2015-05-27 9:22 ` [PATCH v6 3/7] drm/tilcdc: Add support for external tda998x encoder Jyri Sarha
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:22 UTC (permalink / raw)
To: dri-devel, airlied, linux-omap, devicetree, bcousson, tony
Cc: rmk+kernel, tomi.valkeinen, Jyri Sarha
Remove tilcdc slave support for tda998x driver. The tilcdc slave
support would conflicts with componentized use of tda998x.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
---
.../devicetree/bindings/drm/tilcdc/slave.txt | 18 -
drivers/gpu/drm/tilcdc/Makefile | 1 -
drivers/gpu/drm/tilcdc/tilcdc_drv.c | 13 -
drivers/gpu/drm/tilcdc/tilcdc_drv.h | 1 -
drivers/gpu/drm/tilcdc/tilcdc_slave.c | 411 ---------------------
drivers/gpu/drm/tilcdc/tilcdc_slave.h | 26 --
6 files changed, 470 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/drm/tilcdc/slave.txt
delete mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave.c
delete mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave.h
diff --git a/Documentation/devicetree/bindings/drm/tilcdc/slave.txt b/Documentation/devicetree/bindings/drm/tilcdc/slave.txt
deleted file mode 100644
index 3d2c524..0000000
--- a/Documentation/devicetree/bindings/drm/tilcdc/slave.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-Device-Tree bindings for tilcdc DRM encoder slave output driver
-
-Required properties:
- - compatible: value should be "ti,tilcdc,slave".
- - i2c: the phandle for the i2c device the encoder slave is connected to
-
-Recommended properties:
- - pinctrl-names, pinctrl-0: the pincontrol settings to configure
- muxing properly for pins that connect to TFP410 device
-
-Example:
-
- hdmi {
- compatible = "ti,tilcdc,slave";
- i2c = <&i2c0>;
- pinctrl-names = "default";
- pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
- };
diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile
index 7d2eefe..44485f9 100644
--- a/drivers/gpu/drm/tilcdc/Makefile
+++ b/drivers/gpu/drm/tilcdc/Makefile
@@ -6,7 +6,6 @@ endif
tilcdc-y := \
tilcdc_crtc.o \
tilcdc_tfp410.o \
- tilcdc_slave.o \
tilcdc_panel.o \
tilcdc_drv.o
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 095fca9..0f1e099 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -20,13 +20,11 @@
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"
#include "tilcdc_tfp410.h"
-#include "tilcdc_slave.h"
#include "tilcdc_panel.h"
#include "drm_fb_helper.h"
static LIST_HEAD(module_list);
-static bool slave_probing;
void tilcdc_module_init(struct tilcdc_module *mod, const char *name,
const struct tilcdc_module_ops *funcs)
@@ -42,11 +40,6 @@ void tilcdc_module_cleanup(struct tilcdc_module *mod)
list_del(&mod->list);
}
-void tilcdc_slave_probedefer(bool defered)
-{
- slave_probing = defered;
-}
-
static struct of_device_id tilcdc_of_match[];
static struct drm_framebuffer *tilcdc_fb_create(struct drm_device *dev,
@@ -620,10 +613,6 @@ static int tilcdc_pdev_probe(struct platform_device *pdev)
return -ENXIO;
}
- /* defer probing if slave is in deferred probing */
- if (slave_probing == true)
- return -EPROBE_DEFER;
-
return drm_platform_init(&tilcdc_driver, pdev);
}
@@ -654,7 +643,6 @@ static int __init tilcdc_drm_init(void)
{
DBG("init");
tilcdc_tfp410_init();
- tilcdc_slave_init();
tilcdc_panel_init();
return platform_driver_register(&tilcdc_platform_driver);
}
@@ -664,7 +652,6 @@ static void __exit tilcdc_drm_fini(void)
DBG("fini");
platform_driver_unregister(&tilcdc_platform_driver);
tilcdc_panel_fini();
- tilcdc_slave_fini();
tilcdc_tfp410_fini();
}
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
index 7596c14..6336512 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
@@ -116,7 +116,6 @@ struct tilcdc_module {
void tilcdc_module_init(struct tilcdc_module *mod, const char *name,
const struct tilcdc_module_ops *funcs);
void tilcdc_module_cleanup(struct tilcdc_module *mod);
-void tilcdc_slave_probedefer(bool defered);
/* Panel config that needs to be set in the crtc, but is not coming from
* the mode timings. The display module is expected to call
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave.c b/drivers/gpu/drm/tilcdc/tilcdc_slave.c
deleted file mode 100644
index 3775fd4..0000000
--- a/drivers/gpu/drm/tilcdc/tilcdc_slave.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/*
- * Copyright (C) 2012 Texas Instruments
- * Author: Rob Clark <robdclark@gmail.com>
- *
- * 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.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/i2c.h>
-#include <linux/pinctrl/pinmux.h>
-#include <linux/pinctrl/consumer.h>
-#include <drm/drm_encoder_slave.h>
-
-#include "tilcdc_drv.h"
-
-struct slave_module {
- struct tilcdc_module base;
- struct i2c_adapter *i2c;
-};
-#define to_slave_module(x) container_of(x, struct slave_module, base)
-
-static const struct tilcdc_panel_info slave_info = {
- .bpp = 16,
- .ac_bias = 255,
- .ac_bias_intrpt = 0,
- .dma_burst_sz = 16,
- .fdd = 0x80,
- .tft_alt_mode = 0,
- .sync_edge = 0,
- .sync_ctrl = 1,
- .raster_order = 0,
-};
-
-
-/*
- * Encoder:
- */
-
-struct slave_encoder {
- struct drm_encoder_slave base;
- struct slave_module *mod;
-};
-#define to_slave_encoder(x) container_of(to_encoder_slave(x), struct slave_encoder, base)
-
-static inline struct drm_encoder_slave_funcs *
-get_slave_funcs(struct drm_encoder *enc)
-{
- return to_encoder_slave(enc)->slave_funcs;
-}
-
-static void slave_encoder_destroy(struct drm_encoder *encoder)
-{
- struct slave_encoder *slave_encoder = to_slave_encoder(encoder);
- if (get_slave_funcs(encoder))
- get_slave_funcs(encoder)->destroy(encoder);
- drm_encoder_cleanup(encoder);
- kfree(slave_encoder);
-}
-
-static void slave_encoder_prepare(struct drm_encoder *encoder)
-{
- drm_i2c_encoder_prepare(encoder);
- tilcdc_crtc_set_panel_info(encoder->crtc, &slave_info);
-}
-
-static bool slave_encoder_fixup(struct drm_encoder *encoder,
- const struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
-{
- /*
- * tilcdc does not generate VESA-complient sync but aligns
- * VS on the second edge of HS instead of first edge.
- * We use adjusted_mode, to fixup sync by aligning both rising
- * edges and add HSKEW offset to let the slave encoder fix it up.
- */
- adjusted_mode->hskew = mode->hsync_end - mode->hsync_start;
- adjusted_mode->flags |= DRM_MODE_FLAG_HSKEW;
-
- if (mode->flags & DRM_MODE_FLAG_NHSYNC) {
- adjusted_mode->flags |= DRM_MODE_FLAG_PHSYNC;
- adjusted_mode->flags &= ~DRM_MODE_FLAG_NHSYNC;
- } else {
- adjusted_mode->flags |= DRM_MODE_FLAG_NHSYNC;
- adjusted_mode->flags &= ~DRM_MODE_FLAG_PHSYNC;
- }
-
- return drm_i2c_encoder_mode_fixup(encoder, mode, adjusted_mode);
-}
-
-
-static const struct drm_encoder_funcs slave_encoder_funcs = {
- .destroy = slave_encoder_destroy,
-};
-
-static const struct drm_encoder_helper_funcs slave_encoder_helper_funcs = {
- .dpms = drm_i2c_encoder_dpms,
- .mode_fixup = slave_encoder_fixup,
- .prepare = slave_encoder_prepare,
- .commit = drm_i2c_encoder_commit,
- .mode_set = drm_i2c_encoder_mode_set,
- .save = drm_i2c_encoder_save,
- .restore = drm_i2c_encoder_restore,
-};
-
-static const struct i2c_board_info info = {
- I2C_BOARD_INFO("tda998x", 0x70)
-};
-
-static struct drm_encoder *slave_encoder_create(struct drm_device *dev,
- struct slave_module *mod)
-{
- struct slave_encoder *slave_encoder;
- struct drm_encoder *encoder;
- int ret;
-
- slave_encoder = kzalloc(sizeof(*slave_encoder), GFP_KERNEL);
- if (!slave_encoder) {
- dev_err(dev->dev, "allocation failed\n");
- return NULL;
- }
-
- slave_encoder->mod = mod;
-
- encoder = &slave_encoder->base.base;
- encoder->possible_crtcs = 1;
-
- ret = drm_encoder_init(dev, encoder, &slave_encoder_funcs,
- DRM_MODE_ENCODER_TMDS);
- if (ret)
- goto fail;
-
- drm_encoder_helper_add(encoder, &slave_encoder_helper_funcs);
-
- ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder), mod->i2c, &info);
- if (ret)
- goto fail;
-
- return encoder;
-
-fail:
- slave_encoder_destroy(encoder);
- return NULL;
-}
-
-/*
- * Connector:
- */
-
-struct slave_connector {
- struct drm_connector base;
-
- struct drm_encoder *encoder; /* our connected encoder */
- struct slave_module *mod;
-};
-#define to_slave_connector(x) container_of(x, struct slave_connector, base)
-
-static void slave_connector_destroy(struct drm_connector *connector)
-{
- struct slave_connector *slave_connector = to_slave_connector(connector);
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
- kfree(slave_connector);
-}
-
-static enum drm_connector_status slave_connector_detect(
- struct drm_connector *connector,
- bool force)
-{
- struct drm_encoder *encoder = to_slave_connector(connector)->encoder;
- return get_slave_funcs(encoder)->detect(encoder, connector);
-}
-
-static int slave_connector_get_modes(struct drm_connector *connector)
-{
- struct drm_encoder *encoder = to_slave_connector(connector)->encoder;
- return get_slave_funcs(encoder)->get_modes(encoder, connector);
-}
-
-static int slave_connector_mode_valid(struct drm_connector *connector,
- struct drm_display_mode *mode)
-{
- struct drm_encoder *encoder = to_slave_connector(connector)->encoder;
- struct tilcdc_drm_private *priv = connector->dev->dev_private;
- int ret;
-
- ret = tilcdc_crtc_mode_valid(priv->crtc, mode);
- if (ret != MODE_OK)
- return ret;
-
- return get_slave_funcs(encoder)->mode_valid(encoder, mode);
-}
-
-static struct drm_encoder *slave_connector_best_encoder(
- struct drm_connector *connector)
-{
- struct slave_connector *slave_connector = to_slave_connector(connector);
- return slave_connector->encoder;
-}
-
-static int slave_connector_set_property(struct drm_connector *connector,
- struct drm_property *property, uint64_t value)
-{
- struct drm_encoder *encoder = to_slave_connector(connector)->encoder;
- return get_slave_funcs(encoder)->set_property(encoder,
- connector, property, value);
-}
-
-static const struct drm_connector_funcs slave_connector_funcs = {
- .destroy = slave_connector_destroy,
- .dpms = drm_helper_connector_dpms,
- .detect = slave_connector_detect,
- .fill_modes = drm_helper_probe_single_connector_modes,
- .set_property = slave_connector_set_property,
-};
-
-static const struct drm_connector_helper_funcs slave_connector_helper_funcs = {
- .get_modes = slave_connector_get_modes,
- .mode_valid = slave_connector_mode_valid,
- .best_encoder = slave_connector_best_encoder,
-};
-
-static struct drm_connector *slave_connector_create(struct drm_device *dev,
- struct slave_module *mod, struct drm_encoder *encoder)
-{
- struct slave_connector *slave_connector;
- struct drm_connector *connector;
- int ret;
-
- slave_connector = kzalloc(sizeof(*slave_connector), GFP_KERNEL);
- if (!slave_connector) {
- dev_err(dev->dev, "allocation failed\n");
- return NULL;
- }
-
- slave_connector->encoder = encoder;
- slave_connector->mod = mod;
-
- connector = &slave_connector->base;
-
- drm_connector_init(dev, connector, &slave_connector_funcs,
- DRM_MODE_CONNECTOR_HDMIA);
- drm_connector_helper_add(connector, &slave_connector_helper_funcs);
-
- connector->polled = DRM_CONNECTOR_POLL_CONNECT |
- DRM_CONNECTOR_POLL_DISCONNECT;
-
- connector->interlace_allowed = 0;
- connector->doublescan_allowed = 0;
-
- get_slave_funcs(encoder)->create_resources(encoder, connector);
-
- ret = drm_mode_connector_attach_encoder(connector, encoder);
- if (ret)
- goto fail;
-
- drm_connector_register(connector);
-
- return connector;
-
-fail:
- slave_connector_destroy(connector);
- return NULL;
-}
-
-/*
- * Module:
- */
-
-static int slave_modeset_init(struct tilcdc_module *mod, struct drm_device *dev)
-{
- struct slave_module *slave_mod = to_slave_module(mod);
- struct tilcdc_drm_private *priv = dev->dev_private;
- struct drm_encoder *encoder;
- struct drm_connector *connector;
-
- encoder = slave_encoder_create(dev, slave_mod);
- if (!encoder)
- return -ENOMEM;
-
- connector = slave_connector_create(dev, slave_mod, encoder);
- if (!connector)
- return -ENOMEM;
-
- priv->encoders[priv->num_encoders++] = encoder;
- priv->connectors[priv->num_connectors++] = connector;
-
- return 0;
-}
-
-static const struct tilcdc_module_ops slave_module_ops = {
- .modeset_init = slave_modeset_init,
-};
-
-/*
- * Device:
- */
-
-static struct of_device_id slave_of_match[];
-
-static int slave_probe(struct platform_device *pdev)
-{
- struct device_node *node = pdev->dev.of_node;
- struct device_node *i2c_node;
- struct slave_module *slave_mod;
- struct tilcdc_module *mod;
- struct pinctrl *pinctrl;
- uint32_t i2c_phandle;
- struct i2c_adapter *slavei2c;
- int ret = -EINVAL;
-
- /* bail out early if no DT data: */
- if (!node) {
- dev_err(&pdev->dev, "device-tree data is missing\n");
- return -ENXIO;
- }
-
- /* Bail out early if i2c not specified */
- if (of_property_read_u32(node, "i2c", &i2c_phandle)) {
- dev_err(&pdev->dev, "could not get i2c bus phandle\n");
- return ret;
- }
-
- i2c_node = of_find_node_by_phandle(i2c_phandle);
- if (!i2c_node) {
- dev_err(&pdev->dev, "could not get i2c bus node\n");
- return ret;
- }
-
- /* but defer the probe if it can't be initialized it might come later */
- slavei2c = of_find_i2c_adapter_by_node(i2c_node);
- of_node_put(i2c_node);
-
- if (!slavei2c) {
- ret = -EPROBE_DEFER;
- tilcdc_slave_probedefer(true);
- dev_err(&pdev->dev, "could not get i2c\n");
- return ret;
- }
-
- slave_mod = kzalloc(sizeof(*slave_mod), GFP_KERNEL);
- if (!slave_mod) {
- ret = -ENOMEM;
- goto fail_adapter;
- }
-
- mod = &slave_mod->base;
- pdev->dev.platform_data = mod;
-
- mod->preferred_bpp = slave_info.bpp;
-
- slave_mod->i2c = slavei2c;
-
- tilcdc_module_init(mod, "slave", &slave_module_ops);
-
- pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
- if (IS_ERR(pinctrl))
- dev_warn(&pdev->dev, "pins are not configured\n");
-
- tilcdc_slave_probedefer(false);
-
- return 0;
-
-fail_adapter:
- i2c_put_adapter(slavei2c);
- return ret;
-}
-
-static int slave_remove(struct platform_device *pdev)
-{
- struct tilcdc_module *mod = dev_get_platdata(&pdev->dev);
- struct slave_module *slave_mod = to_slave_module(mod);
-
- tilcdc_module_cleanup(mod);
- kfree(slave_mod);
-
- return 0;
-}
-
-static struct of_device_id slave_of_match[] = {
- { .compatible = "ti,tilcdc,slave", },
- { },
-};
-
-struct platform_driver slave_driver = {
- .probe = slave_probe,
- .remove = slave_remove,
- .driver = {
- .owner = THIS_MODULE,
- .name = "slave",
- .of_match_table = slave_of_match,
- },
-};
-
-int __init tilcdc_slave_init(void)
-{
- return platform_driver_register(&slave_driver);
-}
-
-void __exit tilcdc_slave_fini(void)
-{
- platform_driver_unregister(&slave_driver);
-}
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave.h b/drivers/gpu/drm/tilcdc/tilcdc_slave.h
deleted file mode 100644
index 2f85048..0000000
--- a/drivers/gpu/drm/tilcdc/tilcdc_slave.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright (C) 2012 Texas Instruments
- * Author: Rob Clark <robdclark@gmail.com>
- *
- * 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.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __TILCDC_SLAVE_H__
-#define __TILCDC_SLAVE_H__
-
-/* sub-module for i2c slave encoder output */
-
-int tilcdc_slave_init(void);
-void tilcdc_slave_fini(void);
-
-#endif /* __TILCDC_SLAVE_H__ */
--
1.9.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v6 3/7] drm/tilcdc: Add support for external tda998x encoder
2015-05-27 9:22 [PATCH v6 0/7] Use DRM component API in tilcdc to connect to tda998x Jyri Sarha
2015-05-27 9:22 ` [PATCH v6 1/7] drm/tilcdc: Fix module unloading Jyri Sarha
2015-05-27 9:22 ` [PATCH v6 2/7] drm/tilcdc: Remove tilcdc slave support for tda998x driver Jyri Sarha
@ 2015-05-27 9:22 ` Jyri Sarha
2015-05-27 9:22 ` [PATCH v6 4/7] drm/tilcdc: use pm_runtime_irq_safe() Jyri Sarha
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:22 UTC (permalink / raw)
To: dri-devel, airlied, linux-omap, devicetree, bcousson, tony
Cc: rmk+kernel, tomi.valkeinen, Jyri Sarha
Add support for an external compontised DRM encoder. The external
encoder can be connected to tilcdc trough device tree graph binding.
The binding document for tilcdc has been updated. The current
implementation supports only tda998x encoder.
To be able to filter out the unsupported video modes the tilcdc driver
needs to hijack the external connectors helper functions. The tilcdc
installes new helper functions that are otherwise identical to
orignals, but the mode_valid() call-back check the mode first localy,
before calling the original call-back. The tilcdc dirver restores the
original helper functions before it is unbound from the external
device.
I got the idea and some lines of code from Jean-Francois Moine's
"drm/tilcdc: Change the interface with the tda998x driver"-patch.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
---
.../devicetree/bindings/drm/tilcdc/tilcdc.txt | 27 ++++
drivers/gpu/drm/tilcdc/Makefile | 1 +
drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 33 ++++
drivers/gpu/drm/tilcdc/tilcdc_drv.c | 85 +++++++++--
drivers/gpu/drm/tilcdc/tilcdc_drv.h | 5 +
drivers/gpu/drm/tilcdc/tilcdc_external.c | 166 +++++++++++++++++++++
drivers/gpu/drm/tilcdc/tilcdc_external.h | 25 ++++
7 files changed, 329 insertions(+), 13 deletions(-)
create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_external.c
create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_external.h
diff --git a/Documentation/devicetree/bindings/drm/tilcdc/tilcdc.txt b/Documentation/devicetree/bindings/drm/tilcdc/tilcdc.txt
index fff10da..2136ee8 100644
--- a/Documentation/devicetree/bindings/drm/tilcdc/tilcdc.txt
+++ b/Documentation/devicetree/bindings/drm/tilcdc/tilcdc.txt
@@ -18,6 +18,12 @@ Optional properties:
- max-pixelclock: The maximum pixel clock that can be supported
by the lcd controller in KHz.
+Optional nodes:
+
+ - port/ports: to describe a connection to an external encoder. The
+ binding follows Documentation/devicetree/bindings/graph.txt and
+ suppors a single port with a single endpoint.
+
Example:
fb: fb@4830e000 {
@@ -26,4 +32,25 @@ Example:
interrupt-parent = <&intc>;
interrupts = <36>;
ti,hwmods = "lcdc";
+
+ port {
+ lcdc_0: endpoint@0 {
+ remote-endpoint = <&hdmi_0>;
+ };
+ };
+ };
+
+ tda19988: tda19988 {
+ compatible = "nxp,tda998x";
+ reg = <0x70>;
+
+ pinctrl-names = "default", "off";
+ pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
+ pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
+
+ port {
+ hdmi_0: endpoint@0 {
+ remote-endpoint = <&lcdc_0>;
+ };
+ };
};
diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile
index 44485f9..e1f738b 100644
--- a/drivers/gpu/drm/tilcdc/Makefile
+++ b/drivers/gpu/drm/tilcdc/Makefile
@@ -7,6 +7,7 @@ tilcdc-y := \
tilcdc_crtc.o \
tilcdc_tfp410.o \
tilcdc_panel.o \
+ tilcdc_external.o \
tilcdc_drv.o
obj-$(CONFIG_DRM_TILCDC) += tilcdc.o
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index c2d5980..7d07733 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -37,6 +37,9 @@ struct tilcdc_crtc {
/* for deferred fb unref's: */
struct drm_flip_work unref_work;
+
+ /* Only set if an external encoder is connected */
+ bool simulate_vesa_sync;
};
#define to_tilcdc_crtc(x) container_of(x, struct tilcdc_crtc, base)
@@ -214,6 +217,28 @@ static bool tilcdc_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
+ struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
+
+ if (!tilcdc_crtc->simulate_vesa_sync)
+ return true;
+
+ /*
+ * tilcdc does not generate VESA-compliant sync but aligns
+ * VS on the second edge of HS instead of first edge.
+ * We use adjusted_mode, to fixup sync by aligning both rising
+ * edges and add HSKEW offset to fix the sync.
+ */
+ adjusted_mode->hskew = mode->hsync_end - mode->hsync_start;
+ adjusted_mode->flags |= DRM_MODE_FLAG_HSKEW;
+
+ if (mode->flags & DRM_MODE_FLAG_NHSYNC) {
+ adjusted_mode->flags |= DRM_MODE_FLAG_PHSYNC;
+ adjusted_mode->flags &= ~DRM_MODE_FLAG_NHSYNC;
+ } else {
+ adjusted_mode->flags |= DRM_MODE_FLAG_NHSYNC;
+ adjusted_mode->flags &= ~DRM_MODE_FLAG_PHSYNC;
+ }
+
return true;
}
@@ -534,6 +559,14 @@ void tilcdc_crtc_set_panel_info(struct drm_crtc *crtc,
tilcdc_crtc->info = info;
}
+void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc,
+ bool simulate_vesa_sync)
+{
+ struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
+
+ tilcdc_crtc->simulate_vesa_sync = simulate_vesa_sync;
+}
+
void tilcdc_crtc_update_clk(struct drm_crtc *crtc)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 0f1e099..fcc0508 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -17,10 +17,13 @@
/* LCDC DRM driver, based on da8xx-fb */
+#include <linux/component.h>
+
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"
#include "tilcdc_tfp410.h"
#include "tilcdc_panel.h"
+#include "tilcdc_external.h"
#include "drm_fb_helper.h"
@@ -73,13 +76,6 @@ static int modeset_init(struct drm_device *dev)
mod->funcs->modeset_init(mod, dev);
}
- if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) {
- /* oh nos! */
- dev_err(dev->dev, "no encoders/connectors found\n");
- drm_mode_config_cleanup(dev);
- return -ENXIO;
- }
-
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.max_width = tilcdc_crtc_max_width(priv->crtc);
@@ -114,6 +110,8 @@ static int tilcdc_unload(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
+ tilcdc_remove_external_encoders(dev);
+
drm_fbdev_cma_fini(priv->fbdev);
drm_kms_helper_poll_fini(dev);
drm_mode_config_cleanup(dev);
@@ -164,6 +162,9 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
dev->dev_private = priv;
+ priv->is_componentized =
+ tilcdc_get_external_components(dev->dev, NULL) > 0;
+
priv->wq = alloc_ordered_workqueue("tilcdc", 0);
if (!priv->wq) {
ret = -ENOMEM;
@@ -253,10 +254,28 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
goto fail_cpufreq_unregister;
}
+ platform_set_drvdata(pdev, dev);
+
+ if (priv->is_componentized) {
+ ret = component_bind_all(dev->dev, dev);
+ if (ret < 0)
+ goto fail_mode_config_cleanup;
+
+ ret = tilcdc_add_external_encoders(dev, &bpp);
+ if (ret < 0)
+ goto fail_component_cleanup;
+ }
+
+ if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) {
+ dev_err(dev->dev, "no encoders/connectors found\n");
+ ret = -ENXIO;
+ goto fail_external_cleanup;
+ }
+
ret = drm_vblank_init(dev, 1);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");
- goto fail_mode_config_cleanup;
+ goto fail_external_cleanup;
}
pm_runtime_get_sync(dev->dev);
@@ -267,9 +286,6 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
goto fail_vblank_cleanup;
}
- platform_set_drvdata(pdev, dev);
-
-
list_for_each_entry(mod, &module_list, list) {
DBG("%s: preferred_bpp: %d", mod->name, mod->preferred_bpp);
bpp = mod->preferred_bpp;
@@ -300,6 +316,13 @@ fail_vblank_cleanup:
fail_mode_config_cleanup:
drm_mode_config_cleanup(dev);
+fail_component_cleanup:
+ if (priv->is_componentized)
+ component_unbind_all(dev->dev, dev);
+
+fail_external_cleanup:
+ tilcdc_remove_external_encoders(dev);
+
fail_cpufreq_unregister:
pm_runtime_disable(dev->dev);
#ifdef CONFIG_CPU_FREQ
@@ -605,20 +628,56 @@ static const struct dev_pm_ops tilcdc_pm_ops = {
* Platform driver:
*/
+static int tilcdc_bind(struct device *dev)
+{
+ return drm_platform_init(&tilcdc_driver, to_platform_device(dev));
+}
+
+static void tilcdc_unbind(struct device *dev)
+{
+ drm_put_dev(dev_get_drvdata(dev));
+}
+
+static const struct component_master_ops tilcdc_comp_ops = {
+ .bind = tilcdc_bind,
+ .unbind = tilcdc_unbind,
+};
+
static int tilcdc_pdev_probe(struct platform_device *pdev)
{
+ struct component_match *match = NULL;
+ int ret;
+
/* bail out early if no DT data: */
if (!pdev->dev.of_node) {
dev_err(&pdev->dev, "device-tree data is missing\n");
return -ENXIO;
}
- return drm_platform_init(&tilcdc_driver, pdev);
+ ret = tilcdc_get_external_components(&pdev->dev, &match);
+ if (ret < 0)
+ return ret;
+ else if (ret == 0)
+ return drm_platform_init(&tilcdc_driver, pdev);
+ else
+ return component_master_add_with_match(&pdev->dev,
+ &tilcdc_comp_ops,
+ match);
}
static int tilcdc_pdev_remove(struct platform_device *pdev)
{
- drm_put_dev(platform_get_drvdata(pdev));
+ struct drm_device *ddev = dev_get_drvdata(&pdev->dev);
+ struct tilcdc_drm_private *priv = ddev->dev_private;
+
+ /* Check if a subcomponent has already triggered the unloading. */
+ if (!priv)
+ return 0;
+
+ if (priv->is_componentized)
+ component_master_del(&pdev->dev, &tilcdc_comp_ops);
+ else
+ drm_put_dev(platform_get_drvdata(pdev));
return 0;
}
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
index 6336512..e863ad0 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
@@ -85,6 +85,9 @@ struct tilcdc_drm_private {
unsigned int num_connectors;
struct drm_connector *connectors[8];
+ const struct drm_connector_helper_funcs *connector_funcs[8];
+
+ bool is_componentized;
};
/* Sub-module for display. Since we don't know at compile time what panels
@@ -165,6 +168,8 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc);
void tilcdc_crtc_update_clk(struct drm_crtc *crtc);
void tilcdc_crtc_set_panel_info(struct drm_crtc *crtc,
const struct tilcdc_panel_info *info);
+void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc,
+ bool simulate_vesa_sync);
int tilcdc_crtc_mode_valid(struct drm_crtc *crtc, struct drm_display_mode *mode);
int tilcdc_crtc_max_width(struct drm_crtc *crtc);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_external.c b/drivers/gpu/drm/tilcdc/tilcdc_external.c
new file mode 100644
index 0000000..03acb4f
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_external.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2015 Texas Instruments
+ * Author: Jyri Sarha <jsarha@ti.com>
+ *
+ * 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/component.h>
+#include <linux/of_graph.h>
+
+#include "tilcdc_drv.h"
+#include "tilcdc_external.h"
+
+static const struct tilcdc_panel_info panel_info_tda998x = {
+ .ac_bias = 255,
+ .ac_bias_intrpt = 0,
+ .dma_burst_sz = 16,
+ .bpp = 16,
+ .fdd = 0x80,
+ .tft_alt_mode = 0,
+ .invert_pxl_clk = 1,
+ .sync_edge = 1,
+ .sync_ctrl = 1,
+ .raster_order = 0,
+};
+
+static int tilcdc_external_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct tilcdc_drm_private *priv = connector->dev->dev_private;
+ int ret, i;
+
+ ret = tilcdc_crtc_mode_valid(priv->crtc, mode);
+ if (ret != MODE_OK)
+ return ret;
+
+ for (i = 0; i < priv->num_connectors &&
+ priv->connectors[i] != connector; i++)
+ ;
+
+ BUG_ON(priv->connectors[i] != connector);
+ BUG_ON(!priv->connector_funcs[i]);
+
+ /* If the connector has its own mode_valid call it. */
+ if (!IS_ERR(priv->connector_funcs[i]) &&
+ priv->connector_funcs[i]->mode_valid)
+ return priv->connector_funcs[i]->mode_valid(connector, mode);
+
+ return MODE_OK;
+}
+
+static int tilcdc_add_external_encoder(struct drm_device *dev, int *bpp,
+ struct drm_connector *connector)
+{
+ struct tilcdc_drm_private *priv = dev->dev_private;
+ struct drm_connector_helper_funcs *connector_funcs;
+
+ priv->connectors[priv->num_connectors] = connector;
+ priv->encoders[priv->num_encoders++] = connector->encoder;
+
+ /* Only tda998x is supported at the moment. */
+ tilcdc_crtc_set_simulate_vesa_sync(priv->crtc, true);
+ tilcdc_crtc_set_panel_info(priv->crtc, &panel_info_tda998x);
+ *bpp = panel_info_tda998x.bpp;
+
+ connector_funcs = devm_kzalloc(dev->dev, sizeof(*connector_funcs),
+ GFP_KERNEL);
+ if (!connector_funcs)
+ return -ENOMEM;
+
+ /* connector->helper_private contains always struct
+ * connector_helper_funcs pointer. For tilcdc crtc to have a
+ * say if a specific mode is Ok, we need to install our own
+ * helper functions. In our helper functions we copy
+ * everything else but use our own mode_valid() (above).
+ */
+ if (connector->helper_private) {
+ priv->connector_funcs[priv->num_connectors] =
+ connector->helper_private;
+ *connector_funcs = *priv->connector_funcs[priv->num_connectors];
+ } else {
+ priv->connector_funcs[priv->num_connectors] = ERR_PTR(-ENOENT);
+ }
+ connector_funcs->mode_valid = tilcdc_external_mode_valid;
+ drm_connector_helper_add(connector, connector_funcs);
+ priv->num_connectors++;
+
+ dev_dbg(dev->dev, "External encoder '%s' connected\n",
+ connector->encoder->name);
+
+ return 0;
+}
+
+int tilcdc_add_external_encoders(struct drm_device *dev, int *bpp)
+{
+ struct tilcdc_drm_private *priv = dev->dev_private;
+ struct drm_connector *connector;
+ int num_internal_connectors = priv->num_connectors;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ bool found = false;
+ int i, ret;
+
+ for (i = 0; i < num_internal_connectors; i++)
+ if (connector == priv->connectors[i])
+ found = true;
+ if (!found) {
+ ret = tilcdc_add_external_encoder(dev, bpp, connector);
+ if (ret)
+ return ret;
+ }
+ }
+ return 0;
+}
+
+void tilcdc_remove_external_encoders(struct drm_device *dev)
+{
+ struct tilcdc_drm_private *priv = dev->dev_private;
+ int i;
+
+ /* Restore the original helper functions, if any. */
+ for (i = 0; i < priv->num_connectors; i++)
+ if (IS_ERR(priv->connector_funcs[i]))
+ drm_connector_helper_add(priv->connectors[i], NULL);
+ else if (priv->connector_funcs[i])
+ drm_connector_helper_add(priv->connectors[i],
+ priv->connector_funcs[i]);
+}
+
+static int dev_match_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+int tilcdc_get_external_components(struct device *dev,
+ struct component_match **match)
+{
+ struct device_node *ep = NULL;
+ int count = 0;
+
+ while ((ep = of_graph_get_next_endpoint(dev->of_node, ep))) {
+ struct device_node *node;
+
+ node = of_graph_get_remote_port_parent(ep);
+ if (!node && !of_device_is_available(node)) {
+ of_node_put(node);
+ continue;
+ }
+
+ dev_dbg(dev, "Subdevice node '%s' found\n", node->name);
+ if (match)
+ component_match_add(dev, match, dev_match_of, node);
+ of_node_put(node);
+ count++;
+ }
+
+ if (count > 1) {
+ dev_err(dev, "Only one external encoder is supported\n");
+ return -EINVAL;
+ }
+
+ return count;
+}
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_external.h b/drivers/gpu/drm/tilcdc/tilcdc_external.h
new file mode 100644
index 0000000..6aabe27
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_external.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2015 Texas Instruments
+ * Author: Jyri Sarha <jsarha@ti.com>
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __TILCDC_EXTERNAL_H__
+#define __TILCDC_EXTERNAL_H__
+
+int tilcdc_add_external_encoders(struct drm_device *dev, int *bpp);
+void tilcdc_remove_external_encoders(struct drm_device *dev);
+int tilcdc_get_external_components(struct device *dev,
+ struct component_match **match);
+#endif /* __TILCDC_SLAVE_H__ */
--
1.9.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v6 4/7] drm/tilcdc: use pm_runtime_irq_safe()
2015-05-27 9:22 [PATCH v6 0/7] Use DRM component API in tilcdc to connect to tda998x Jyri Sarha
` (2 preceding siblings ...)
2015-05-27 9:22 ` [PATCH v6 3/7] drm/tilcdc: Add support for external tda998x encoder Jyri Sarha
@ 2015-05-27 9:22 ` Jyri Sarha
[not found] ` <cover.1432718049.git.jsarha-l0cyMroinI0@public.gmane.org>
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:22 UTC (permalink / raw)
To: dri-devel, airlied, linux-omap, devicetree, bcousson, tony
Cc: tomi.valkeinen, rmk+kernel, robdclark, moinejf, Jyri Sarha
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
tilcdc calls runtime PM get/put functions everywhere. Some of those
places will be called in irq context, crashing the driver.
As a quick fix, use pm_runtime_irq_safe() for tilcdc.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
---
drivers/gpu/drm/tilcdc/tilcdc_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index fcc0508..0f283a3 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -227,6 +227,7 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock);
pm_runtime_enable(dev->dev);
+ pm_runtime_irq_safe(dev->dev);
/* Determine LCD IP Version */
pm_runtime_get_sync(dev->dev);
--
1.9.1
^ permalink raw reply related [flat|nested] 8+ messages in thread[parent not found: <cover.1432718049.git.jsarha-l0cyMroinI0@public.gmane.org>]
* [PATCH v6 5/7] drm/tilcdc: Add DRM_TILCDC_SLAVE_COMPAT for ti,tilcdc,slave binding support
[not found] ` <cover.1432718049.git.jsarha-l0cyMroinI0@public.gmane.org>
@ 2015-05-27 9:22 ` Jyri Sarha
0 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:22 UTC (permalink / raw)
To: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW, airlied-cv59FeDIM0c,
linux-omap-u79uwXL29TY76Z2rM5mHXA,
devicetree-u79uwXL29TY76Z2rM5mHXA,
bcousson-rdvid1DuHRBWk0Htik3J/w, tony-4v6yS6AI5VpBDgjK7y7TUQ
Cc: tomi.valkeinen-l0cyMroinI0, rmk+kernel-lFZ/pmaqli7XmaaqVzeoHQ,
robdclark-Re5JQEeQqe8AvxtiuMwx3w, moinejf-GANU6spQydw, Jyri Sarha
Adds a CONFIG_DRM_TILCDC_SLAVE_COMPAT module for "ti,tilcdc,slave"
node conversion. The implementation is in tilcdc_slave_compat.c and it
uses tilcdc_slave_compat.dts as a basis for creating a DTS
overlay. The DTS overlay adds an external tda998x encoder to tilcdc
that corresponds to the old tda998x based slave encoder.
Signed-off-by: Jyri Sarha <jsarha-l0cyMroinI0@public.gmane.org>
---
drivers/gpu/drm/tilcdc/Kconfig | 12 ++
drivers/gpu/drm/tilcdc/Makefile | 3 +
drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c | 270 +++++++++++++++++++++++++
drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts | 72 +++++++
drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h | 25 +++
5 files changed, 382 insertions(+)
create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c
create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts
create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h
diff --git a/drivers/gpu/drm/tilcdc/Kconfig b/drivers/gpu/drm/tilcdc/Kconfig
index 8394a0b..78beafb 100644
--- a/drivers/gpu/drm/tilcdc/Kconfig
+++ b/drivers/gpu/drm/tilcdc/Kconfig
@@ -12,3 +12,15 @@ config DRM_TILCDC
Choose this option if you have an TI SoC with LCDC display
controller, for example AM33xx in beagle-bone, DA8xx, or
OMAP-L1xx. This driver replaces the FB_DA8XX fbdev driver.
+
+config DRM_TILCDC_SLAVE_COMPAT
+ bool "Support device tree blobs using TI LCDC Slave binding"
+ depends on DRM_TILCDC
+ default y
+ select OF_RESOLVE
+ select OF_OVERLAY
+ help
+ Choose this option if you need a kernel that is compatible
+ with device tree blobs using the obsolete "ti,tilcdc,slave"
+ binding. If you find "ti,tilcdc,slave"-string from your DTB,
+ you probably need this. Otherwise you do not.
diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile
index e1f738b..deeca48 100644
--- a/drivers/gpu/drm/tilcdc/Makefile
+++ b/drivers/gpu/drm/tilcdc/Makefile
@@ -3,6 +3,9 @@ ifeq (, $(findstring -W,$(EXTRA_CFLAGS)))
ccflags-y += -Werror
endif
+obj-$(CONFIG_DRM_TILCDC_SLAVE_COMPAT) += tilcdc_slave_compat.o \
+ tilcdc_slave_compat.dtb.o
+
tilcdc-y := \
tilcdc_crtc.o \
tilcdc_tfp410.o \
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c
new file mode 100644
index 0000000..106679b
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c
@@ -0,0 +1,270 @@
+/*
+ * Copyright (C) 2015 Texas Instruments
+ * Author: Jyri Sarha <jsarha-l0cyMroinI0@public.gmane.org>
+ *
+ * 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.
+ *
+ */
+
+/*
+ * To support the old "ti,tilcdc,slave" binding the binding has to be
+ * transformed to the new external encoder binding.
+ */
+
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/of_fdt.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+
+#include "tilcdc_slave_compat.h"
+
+struct kfree_table {
+ int total;
+ int num;
+ void **table;
+};
+
+static int __init kfree_table_init(struct kfree_table *kft)
+{
+ kft->total = 32;
+ kft->num = 0;
+ kft->table = kmalloc(kft->total * sizeof(*kft->table),
+ GFP_KERNEL);
+ if (!kft->table)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int __init kfree_table_add(struct kfree_table *kft, void *p)
+{
+ if (kft->num == kft->total) {
+ void **old = kft->table;
+
+ kft->total *= 2;
+ kft->table = krealloc(old, kft->total * sizeof(*kft->table),
+ GFP_KERNEL);
+ if (!kft->table) {
+ kft->table = old;
+ kfree(p);
+ return -ENOMEM;
+ }
+ }
+ kft->table[kft->num++] = p;
+ return 0;
+}
+
+static void __init kfree_table_free(struct kfree_table *kft)
+{
+ int i;
+
+ for (i = 0; i < kft->num; i++)
+ kfree(kft->table[i]);
+
+ kfree(kft->table);
+}
+
+static
+struct property * __init tilcdc_prop_dup(const struct property *prop,
+ struct kfree_table *kft)
+{
+ struct property *nprop;
+
+ nprop = kzalloc(sizeof(*nprop), GFP_KERNEL);
+ if (!nprop || kfree_table_add(kft, nprop))
+ return NULL;
+
+ nprop->name = kstrdup(prop->name, GFP_KERNEL);
+ if (!nprop->name || kfree_table_add(kft, nprop->name))
+ return NULL;
+
+ nprop->value = kmemdup(prop->value, prop->length, GFP_KERNEL);
+ if (!nprop->value || kfree_table_add(kft, nprop->value))
+ return NULL;
+
+ nprop->length = prop->length;
+
+ return nprop;
+}
+
+static void __init tilcdc_copy_props(struct device_node *from,
+ struct device_node *to,
+ const char * const props[],
+ struct kfree_table *kft)
+{
+ struct property *prop;
+ int i;
+
+ for (i = 0; props[i]; i++) {
+ prop = of_find_property(from, props[i], NULL);
+ if (!prop)
+ continue;
+
+ prop = tilcdc_prop_dup(prop, kft);
+ if (!prop)
+ continue;
+
+ prop->next = to->properties;
+ to->properties = prop;
+ }
+}
+
+static int __init tilcdc_prop_str_update(struct property *prop,
+ const char *str,
+ struct kfree_table *kft)
+{
+ prop->value = kstrdup(str, GFP_KERNEL);
+ if (kfree_table_add(kft, prop->value) || !prop->value)
+ return -ENOMEM;
+ prop->length = strlen(str)+1;
+ return 0;
+}
+
+static void __init tilcdc_node_disable(struct device_node *node)
+{
+ struct property *prop;
+
+ prop = kzalloc(sizeof(*prop), GFP_KERNEL);
+ if (!prop)
+ return;
+
+ prop->name = "status";
+ prop->value = "disabled";
+ prop->length = strlen((char *)prop->value)+1;
+
+ of_update_property(node, prop);
+}
+
+struct device_node * __init tilcdc_get_overlay(struct kfree_table *kft)
+{
+ const int size = __dtb_tilcdc_slave_compat_end -
+ __dtb_tilcdc_slave_compat_begin;
+ static void *overlay_data;
+ struct device_node *overlay;
+ int ret;
+
+ if (!size) {
+ pr_warn("%s: No overlay data\n", __func__);
+ return NULL;
+ }
+
+ overlay_data = kmemdup(__dtb_tilcdc_slave_compat_begin,
+ size, GFP_KERNEL);
+ if (!overlay_data || kfree_table_add(kft, overlay_data))
+ return NULL;
+
+ of_fdt_unflatten_tree(overlay_data, &overlay);
+ if (!overlay) {
+ pr_warn("%s: Unfattening overlay tree failed\n", __func__);
+ return NULL;
+ }
+
+ of_node_set_flag(overlay, OF_DETACHED);
+ ret = of_resolve_phandles(overlay);
+ if (ret) {
+ pr_err("%s: Failed to resolve phandles: %d\n", __func__, ret);
+ return NULL;
+ }
+
+ return overlay;
+}
+
+static const struct of_device_id tilcdc_slave_of_match[] __initconst = {
+ { .compatible = "ti,tilcdc,slave", },
+ {},
+};
+
+static const struct of_device_id tilcdc_of_match[] __initconst = {
+ { .compatible = "ti,am33xx-tilcdc", },
+ {},
+};
+
+static const struct of_device_id tilcdc_tda998x_of_match[] __initconst = {
+ { .compatible = "nxp,tda998x", },
+ {},
+};
+
+static const char * const tilcdc_slave_props[] __initconst = {
+ "pinctrl-names",
+ "pinctrl-0",
+ "pinctrl-1",
+ NULL
+};
+
+void __init tilcdc_convert_slave_node(void)
+{
+ struct device_node *slave = NULL, *lcdc = NULL;
+ struct device_node *i2c = NULL, *fragment = NULL;
+ struct device_node *overlay, *encoder;
+ struct property *prop;
+ /* For all memory needed for the overlay tree. This memory can
+ be freed after the overlay has been applied. */
+ struct kfree_table kft;
+ int ret;
+
+ if (kfree_table_init(&kft))
+ goto out;
+
+ lcdc = of_find_matching_node(NULL, tilcdc_of_match);
+ slave = of_find_matching_node(NULL, tilcdc_slave_of_match);
+
+ if (!slave || !of_device_is_available(lcdc))
+ goto out;
+
+ i2c = of_parse_phandle(slave, "i2c", 0);
+ if (!i2c) {
+ pr_err("%s: Can't find i2c node trough phandle\n", __func__);
+ goto out;
+ }
+
+ overlay = tilcdc_get_overlay(&kft);
+ if (!overlay)
+ goto out;
+
+ encoder = of_find_matching_node(overlay, tilcdc_tda998x_of_match);
+ if (!encoder) {
+ pr_err("%s: Failed to find tda998x node\n", __func__);
+ goto out;
+ }
+
+ tilcdc_copy_props(slave, encoder, tilcdc_slave_props, &kft);
+
+ for_each_child_of_node(overlay, fragment) {
+ prop = of_find_property(fragment, "target-path", NULL);
+ if (!prop)
+ continue;
+ if (!strncmp("i2c", (char *)prop->value, prop->length))
+ if (tilcdc_prop_str_update(prop, i2c->full_name, &kft))
+ goto out;
+ if (!strncmp("lcdc", (char *)prop->value, prop->length))
+ if (tilcdc_prop_str_update(prop, lcdc->full_name, &kft))
+ goto out;
+ }
+
+ tilcdc_node_disable(slave);
+
+ ret = of_overlay_create(overlay);
+ if (ret)
+ pr_err("%s: Creating overlay failed: %d\n", __func__, ret);
+ else
+ pr_info("%s: ti,tilcdc,slave node successfully converted\n",
+ __func__);
+out:
+ kfree_table_free(&kft);
+ of_node_put(i2c);
+ of_node_put(slave);
+ of_node_put(lcdc);
+ of_node_put(fragment);
+}
+
+int __init tilcdc_slave_compat_init(void)
+{
+ tilcdc_convert_slave_node();
+ return 0;
+}
+
+subsys_initcall(tilcdc_slave_compat_init);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts
new file mode 100644
index 0000000..693f8b0
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts
@@ -0,0 +1,72 @@
+/*
+ * DTS overlay for converting ti,tilcdc,slave binding to new binding.
+ *
+ * Copyright (C) 2015 Texas Instruments Inc.
+ * Author: Jyri Sarha <jsarha-l0cyMroinI0@public.gmane.org>
+ *
+ * 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.
+ */
+
+/*
+ * target-path property values are simple tags that are replaced with
+ * correct values in tildcdc_slave_compat.c. Some properties are also
+ * copied over from the ti,tilcdc,slave node.
+ */
+
+/dts-v1/;
+/ {
+ fragment@0 {
+ target-path = "i2c";
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ tda19988 {
+ compatible = "nxp,tda998x";
+ reg = <0x70>;
+ status = "okay";
+
+ port {
+ hdmi_0: endpoint@0 {
+ remote-endpoint = <&lcd_0>;
+ };
+ };
+ };
+ };
+ };
+
+ fragment@1 {
+ target-path = "lcdc";
+ __overlay__ {
+ port {
+ lcd_0: endpoint@0 {
+ remote-endpoint = <&hdmi_0>;
+ };
+ };
+ };
+ };
+
+ __local_fixups__ {
+ fragment@0 {
+ __overlay__ {
+ tda19988 {
+ port {
+ endpoint@0 {
+ remote-endpoint = <0>;
+ };
+ };
+ };
+ };
+ };
+ fragment@1 {
+ __overlay__ {
+ port {
+ endpoint@0 {
+ remote-endpoint = <0>;
+ };
+ };
+ };
+ };
+ };
+};
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h
new file mode 100644
index 0000000..403d35d
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2015 Texas Instruments
+ * Author: Jyri Sarha <jsarha-l0cyMroinI0@public.gmane.org>
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+/* This header declares the symbols defined in tilcdc_slave_compat.dts */
+
+#ifndef __TILCDC_SLAVE_COMPAT_H__
+#define __TILCDC_SLAVE_COMPAT_H__
+
+extern uint8_t __dtb_tilcdc_slave_compat_begin[];
+extern uint8_t __dtb_tilcdc_slave_compat_end[];
+
+#endif /* __TILCDC_SLAVE_COMPAT_H__ */
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v6 6/7] drm/tilcdc: Force building of DRM_TILCDC_SLAVE_COMPAT
2015-05-27 9:22 [PATCH v6 0/7] Use DRM component API in tilcdc to connect to tda998x Jyri Sarha
` (4 preceding siblings ...)
[not found] ` <cover.1432718049.git.jsarha-l0cyMroinI0@public.gmane.org>
@ 2015-05-27 9:23 ` Jyri Sarha
2015-05-27 9:23 ` [PATCH v6 7/7] ARM: dts: am335x-boneblack: Use new binding for HDMI Jyri Sarha
6 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:23 UTC (permalink / raw)
To: dri-devel, airlied, linux-omap, devicetree, bcousson, tony
Cc: rmk+kernel, tomi.valkeinen, Jyri Sarha
If I read Documentation/kbuild/makefiles.txt section 3.6 right, this
patch should not be needed. However, without this patch the objects
needed for DRM_TILCDC_SLAVE_COMPAT are not linked, if DRM_TILCDC is
built as module.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
---
drivers/gpu/drm/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 7d4944e..6081fa6 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -60,7 +60,7 @@ obj-$(CONFIG_DRM_ATMEL_HLCDC) += atmel-hlcdc/
obj-$(CONFIG_DRM_RCAR_DU) += rcar-du/
obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/
obj-$(CONFIG_DRM_OMAP) += omapdrm/
-obj-$(CONFIG_DRM_TILCDC) += tilcdc/
+obj-y += tilcdc/
obj-$(CONFIG_DRM_QXL) += qxl/
obj-$(CONFIG_DRM_BOCHS) += bochs/
obj-$(CONFIG_DRM_MSM) += msm/
--
1.9.1
_______________________________________________
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dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v6 7/7] ARM: dts: am335x-boneblack: Use new binding for HDMI
2015-05-27 9:22 [PATCH v6 0/7] Use DRM component API in tilcdc to connect to tda998x Jyri Sarha
` (5 preceding siblings ...)
2015-05-27 9:23 ` [PATCH v6 6/7] drm/tilcdc: Force building of DRM_TILCDC_SLAVE_COMPAT Jyri Sarha
@ 2015-05-27 9:23 ` Jyri Sarha
6 siblings, 0 replies; 8+ messages in thread
From: Jyri Sarha @ 2015-05-27 9:23 UTC (permalink / raw)
To: dri-devel, airlied, linux-omap, devicetree, bcousson, tony
Cc: rmk+kernel, tomi.valkeinen, Jyri Sarha
Use new binding for the external tda19988 HDMI encoder.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
---
arch/arm/boot/dts/am335x-boneblack.dts | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
index 5c42d25..eadbba3 100644
--- a/arch/arm/boot/dts/am335x-boneblack.dts
+++ b/arch/arm/boot/dts/am335x-boneblack.dts
@@ -68,16 +68,26 @@
&lcdc {
status = "okay";
+ port {
+ lcdc_0: endpoint@0 {
+ remote-endpoint = <&hdmi_0>;
+ };
+ };
};
-/ {
- hdmi {
- compatible = "ti,tilcdc,slave";
- i2c = <&i2c0>;
+&i2c0 {
+ tda19988 {
+ compatible = "nxp,tda998x";
+ reg = <0x70>;
pinctrl-names = "default", "off";
pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
- status = "okay";
+
+ port {
+ hdmi_0: endpoint@0 {
+ remote-endpoint = <&lcdc_0>;
+ };
+ };
};
};
--
1.9.1
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^ permalink raw reply related [flat|nested] 8+ messages in thread