From 739acd85ffdb725a8ef206737875f4b2c1dad02a Mon Sep 17 00:00:00 2001 From: Jyri Sarha Date: Fri, 3 Nov 2017 12:54:01 +0200 Subject: [PATCH] drm/tilcdc: Remove obsolete "ti,tilcdc,slave" dts binding support This patch removes DRM_TILCDC_SLAVE_COMPAT option for supporting the obsolete "ti,tilcdc,slave" device tree binding. The new of_graph based binding - that is widely used in other drm driver too - has been supported since Linux v4.2. Maintaining the the backwards dts conversion code in the DRM_TILCDC_SLAVE_COMPAT has become a nuisance for the device/of development so the we decided to drop it after Linux v4.14, the 2017 LTS. Signed-off-by: Jyri Sarha Acked-by: Rob Herring --- drivers/gpu/drm/tilcdc/Kconfig | 11 - drivers/gpu/drm/tilcdc/Makefile | 3 - drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c | 269 ------------------ .../gpu/drm/tilcdc/tilcdc_slave_compat.dts | 72 ----- drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h | 25 -- 5 files changed, 380 deletions(-) delete mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c delete mode 100644 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts delete 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 28fed7e206d03..81ac82455ce4d 100644 --- a/drivers/gpu/drm/tilcdc/Kconfig +++ b/drivers/gpu/drm/tilcdc/Kconfig @@ -12,14 +12,3 @@ config DRM_TILCDC 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 55ebd516728fd..efc2c4f00daa8 100644 --- a/drivers/gpu/drm/tilcdc/Makefile +++ b/drivers/gpu/drm/tilcdc/Makefile @@ -2,9 +2,6 @@ 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_plane.o \ tilcdc_crtc.o \ diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c deleted file mode 100644 index 482299a6f3b04..0000000000000 --- a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * Copyright (C) 2015 Texas Instruments - * Author: Jyri Sarha - * - * 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 -#include -#include -#include -#include -#include - -#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); -} - -static 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, NULL, &overlay); - if (!overlay) { - pr_warn("%s: Unfattening overlay tree failed\n", __func__); - return NULL; - } - - 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 -}; - -static 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)) - return; - - 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); -} - -static 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 deleted file mode 100644 index 693f8b0aea2da..0000000000000 --- a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts +++ /dev/null @@ -1,72 +0,0 @@ -/* - * DTS overlay for converting ti,tilcdc,slave binding to new binding. - * - * Copyright (C) 2015 Texas Instruments Inc. - * Author: Jyri Sarha - * - * 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 deleted file mode 100644 index 403d35d87d0b4..0000000000000 --- a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (C) 2015 Texas Instruments - * Author: Jyri Sarha - * - * 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 . - */ -/* 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__ */ -- 2.39.5