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);

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__ */

Adds a DRM_TILCDC_INIT module for "ti,tilcdc,slave" node conversion. The implementation is in tilcdc_boot_init.c and it uses tilcdc_slave_convert.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@ti.com --- drivers/gpu/drm/tilcdc/Kconfig | 6 + drivers/gpu/drm/tilcdc/Makefile | 2 + drivers/gpu/drm/tilcdc/tilcdc_boot_init.c | 270 ++++++++++++++++++++++++ drivers/gpu/drm/tilcdc/tilcdc_slave_convert.dts | 70 ++++++ 4 files changed, 348 insertions(+) create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_boot_init.c create mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave_convert.dts

diff --git a/drivers/gpu/drm/tilcdc/Kconfig b/drivers/gpu/drm/tilcdc/Kconfig index 8394a0b..c35d088 100644 --- a/drivers/gpu/drm/tilcdc/Kconfig +++ b/drivers/gpu/drm/tilcdc/Kconfig @@ -1,3 +1,8 @@ +config DRM_TILCDC_INIT + select OF_RESOLVE + select OF_OVERLAY + bool + config DRM_TILCDC tristate "DRM Support for TI LCDC Display Controller" depends on DRM && OF && ARM && HAVE_DMA_ATTRS @@ -8,6 +13,7 @@ config DRM_TILCDC select VIDEOMODE_HELPERS select BACKLIGHT_CLASS_DEVICE select BACKLIGHT_LCD_SUPPORT + select DRM_TILCDC_INIT help Choose this option if you have an TI SoC with LCDC display controller, for example AM33xx in beagle-bone, DA8xx, or diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile index e1f738b..fa184a5 100644 --- a/drivers/gpu/drm/tilcdc/Makefile +++ b/drivers/gpu/drm/tilcdc/Makefile @@ -3,6 +3,8 @@ ifeq (, $(findstring -W,$(EXTRA_CFLAGS))) ccflags-y += -Werror endif

+obj-$(CONFIG_DRM_TILCDC_INIT) += tilcdc_boot_init.o tilcdc_slave_convert.dtb.o + tilcdc-y := \ tilcdc_crtc.o \ tilcdc_tfp410.o \ diff --git a/drivers/gpu/drm/tilcdc/tilcdc_boot_init.c b/drivers/gpu/drm/tilcdc/tilcdc_boot_init.c new file mode 100644 index 0000000..08f3110 --- /dev/null +++ b/drivers/gpu/drm/tilcdc/tilcdc_boot_init.c @@ -0,0 +1,270 @@ +/* + * 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. + * + */ + +/* + * 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> + +struct kfree_table { + int total; + int num; + void **table; +}; + +static int __init kfree_table_init(struct kfree_table *kft) +{ + kft->total = 128; + 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) +{ + extern uint8_t __dtb_tilcdc_slave_convert_begin[]; + extern uint8_t __dtb_tilcdc_slave_convert_end[]; + const int size = __dtb_tilcdc_slave_convert_end - + __dtb_tilcdc_slave_convert_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_convert_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_boot_init(void) +{ + tilcdc_convert_slave_node(); + return 0; +} + +subsys_initcall(tilcdc_boot_init); diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_convert.dts b/drivers/gpu/drm/tilcdc/tilcdc_slave_convert.dts new file mode 100644 index 0000000..8a2bfa9 --- /dev/null +++ b/drivers/gpu/drm/tilcdc/tilcdc_slave_convert.dts @@ -0,0 +1,70 @@ +/* + * DTS overlay for converting ti,tilcdc,slave binding to new binding. + * + * Copyright (C) 2015 Texas Instruments Inc. + * 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. + */ +/* + * target-path property values are simple tags that are replaced with + * correct values in tildcdc_boot_init.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>; + }; + }; + }; + }; + }; +};

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_INIT are not linked, if DRM_TILCDC is built as module.

Signed-off-by: Jyri Sarha jsarha@ti.com --- drivers/gpu/drm/Makefile | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 2c239b9..62c6158 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -60,6 +60,7 @@ obj-$(CONFIG_DRM_RCAR_DU) += rcar-du/ obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/ obj-$(CONFIG_DRM_OMAP) += omapdrm/ obj-$(CONFIG_DRM_TILCDC) += tilcdc/ +obj-$(CONFIG_DRM_TILCDC_INIT) += tilcdc/ obj-$(CONFIG_DRM_QXL) += qxl/ obj-$(CONFIG_DRM_BOCHS) += bochs/ obj-$(CONFIG_DRM_MSM) += msm/

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>; + }; + }; }; };