ENGR00240987: video: port LDB and LCD FB display drivers from 3.5.7 kernel

This is a fast-forward porting of LDB and LCD frame buffer drivers from
3.5.7 kernel to kernel 3.10.  The change set is kept as minimum as
possible with only making necessary code changes, which are mostly for
solving compile problems.

 * Remove <mach/*> inclusions
 * Drop __devinit and __devexit
 * Drop vm flag VM_RESERVED
 * Protect ldb_setup() with #ifndef MODULE to fix "warning: ‘ldb_setup’
   defined but not used" in module build
 * Remove fb_prepare_logo() and fb_show_logo() calls, because it breaks
   module build, and penguin logo works fine without the calls in
   mxc_ipuv3_fb.c

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

1 files changed, 235 insertions, 0 deletions

diff --git a/drivers/video/mxc/mxc_lcdif.c b/drivers/video/mxc/mxc_lcdif.c
new file mode 100644
index 000000000000..a0cca1c347fb
--- /dev/null
+++ b/drivers/video/mxc/mxc_lcdif.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/init.h>
+#include <linux/ipu.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mxcfb.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+
+#include "mxc_dispdrv.h"
+
+struct mxc_lcd_platform_data {
+	u32 default_ifmt;
+	u32 ipu_id;
+	u32 disp_id;
+};
+
+struct mxc_lcdif_data {
+	struct platform_device *pdev;
+	struct mxc_dispdrv_handle *disp_lcdif;
+};
+
+#define DISPDRV_LCD	"lcd"
+
+static struct fb_videomode lcdif_modedb[] = {
+	{
+	/* 800x480 @ 57 Hz , pixel clk @ 27MHz */
+	"CLAA-WVGA", 57, 800, 480, 37037, 40, 60, 10, 10, 20, 10,
+	FB_SYNC_CLK_LAT_FALL,
+	FB_VMODE_NONINTERLACED,
+	0,},
+	{
+	/* 800x480 @ 60 Hz , pixel clk @ 32MHz */
+	"SEIKO-WVGA", 60, 800, 480, 29850, 89, 164, 23, 10, 10, 10,
+	FB_SYNC_CLK_LAT_FALL,
+	FB_VMODE_NONINTERLACED,
+	0,},
+};
+static int lcdif_modedb_sz = ARRAY_SIZE(lcdif_modedb);
+
+static int lcdif_init(struct mxc_dispdrv_handle *disp,
+	struct mxc_dispdrv_setting *setting)
+{
+	int ret, i;
+	struct mxc_lcdif_data *lcdif = mxc_dispdrv_getdata(disp);
+	struct mxc_lcd_platform_data *plat_data
+			= lcdif->pdev->dev.platform_data;
+	struct fb_videomode *modedb = lcdif_modedb;
+	int modedb_sz = lcdif_modedb_sz;
+
+	/* use platform defined ipu/di */
+	setting->dev_id = plat_data->ipu_id;
+	setting->disp_id = plat_data->disp_id;
+
+	ret = fb_find_mode(&setting->fbi->var, setting->fbi, setting->dft_mode_str,
+				modedb, modedb_sz, NULL, setting->default_bpp);
+	if (!ret) {
+		fb_videomode_to_var(&setting->fbi->var, &modedb[0]);
+		setting->if_fmt = plat_data->default_ifmt;
+	}
+
+	INIT_LIST_HEAD(&setting->fbi->modelist);
+	for (i = 0; i < modedb_sz; i++) {
+		struct fb_videomode m;
+		fb_var_to_videomode(&m, &setting->fbi->var);
+		if (fb_mode_is_equal(&m, &modedb[i])) {
+			fb_add_videomode(&modedb[i],
+					&setting->fbi->modelist);
+			break;
+		}
+	}
+
+	return ret;
+}
+
+void lcdif_deinit(struct mxc_dispdrv_handle *disp)
+{
+	/*TODO*/
+}
+
+static struct mxc_dispdrv_driver lcdif_drv = {
+	.name 	= DISPDRV_LCD,
+	.init 	= lcdif_init,
+	.deinit	= lcdif_deinit,
+};
+
+static int lcd_get_of_property(struct platform_device *pdev,
+				struct mxc_lcd_platform_data *plat_data)
+{
+	struct device_node *np = pdev->dev.of_node;
+	int err;
+	u32 ipu_id, disp_id;
+	const char *default_ifmt;
+
+	err = of_property_read_string(np, "default_ifmt", &default_ifmt);
+	if (err) {
+		dev_dbg(&pdev->dev, "get of property default_ifmt fail\n");
+		return err;
+	}
+	err = of_property_read_u32(np, "ipu_id", &ipu_id);
+	if (err) {
+		dev_dbg(&pdev->dev, "get of property ipu_id fail\n");
+		return err;
+	}
+	err = of_property_read_u32(np, "disp_id", &disp_id);
+	if (err) {
+		dev_dbg(&pdev->dev, "get of property disp_id fail\n");
+		return err;
+	}
+
+	plat_data->ipu_id = ipu_id;
+	plat_data->disp_id = disp_id;
+	if (!strncmp(default_ifmt, "RGB24", 5))
+		plat_data->default_ifmt = IPU_PIX_FMT_RGB24;
+	else if (!strncmp(default_ifmt, "BGR24", 5))
+		plat_data->default_ifmt = IPU_PIX_FMT_BGR24;
+	else if (!strncmp(default_ifmt, "GBR24", 5))
+		plat_data->default_ifmt = IPU_PIX_FMT_GBR24;
+	else if (!strncmp(default_ifmt, "RGB565", 6))
+		plat_data->default_ifmt = IPU_PIX_FMT_RGB565;
+	else if (!strncmp(default_ifmt, "RGB666", 6))
+		plat_data->default_ifmt = IPU_PIX_FMT_RGB666;
+	else if (!strncmp(default_ifmt, "YUV444", 6))
+		plat_data->default_ifmt = IPU_PIX_FMT_YUV444;
+	else if (!strncmp(default_ifmt, "LVDS666", 7))
+		plat_data->default_ifmt = IPU_PIX_FMT_LVDS666;
+	else if (!strncmp(default_ifmt, "YUYV16", 6))
+		plat_data->default_ifmt = IPU_PIX_FMT_YUYV;
+	else if (!strncmp(default_ifmt, "UYVY16", 6))
+		plat_data->default_ifmt = IPU_PIX_FMT_UYVY;
+	else if (!strncmp(default_ifmt, "YVYU16", 6))
+		plat_data->default_ifmt = IPU_PIX_FMT_YVYU;
+	else if (!strncmp(default_ifmt, "VYUY16", 6))
+				plat_data->default_ifmt = IPU_PIX_FMT_VYUY;
+	else {
+		dev_err(&pdev->dev, "err default_ifmt!\n");
+		return -ENOENT;
+	}
+
+	return err;
+}
+
+static int mxc_lcdif_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct pinctrl *pinctrl;
+	struct mxc_lcdif_data *lcdif;
+	struct mxc_lcd_platform_data *plat_data;
+
+	dev_dbg(&pdev->dev, "%s enter\n", __func__);
+	lcdif = devm_kzalloc(&pdev->dev, sizeof(struct mxc_lcdif_data),
+				GFP_KERNEL);
+	if (!lcdif)
+		return -ENOMEM;
+	plat_data = devm_kzalloc(&pdev->dev,
+				sizeof(struct mxc_lcd_platform_data),
+				GFP_KERNEL);
+	if (!plat_data)
+		return -ENOMEM;
+	pdev->dev.platform_data = plat_data;
+
+	ret = lcd_get_of_property(pdev, plat_data);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "get lcd of property fail\n");
+		return ret;
+	}
+
+	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+	if (IS_ERR(pinctrl)) {
+		dev_err(&pdev->dev, "can't get/select pinctrl\n");
+		return PTR_ERR(pinctrl);
+	}
+
+	lcdif->pdev = pdev;
+	lcdif->disp_lcdif = mxc_dispdrv_register(&lcdif_drv);
+	mxc_dispdrv_setdata(lcdif->disp_lcdif, lcdif);
+
+	dev_set_drvdata(&pdev->dev, lcdif);
+	dev_dbg(&pdev->dev, "%s exit\n", __func__);
+
+	return ret;
+}
+
+static int mxc_lcdif_remove(struct platform_device *pdev)
+{
+	struct mxc_lcdif_data *lcdif = dev_get_drvdata(&pdev->dev);
+
+	mxc_dispdrv_puthandle(lcdif->disp_lcdif);
+	mxc_dispdrv_unregister(lcdif->disp_lcdif);
+	kfree(lcdif);
+	return 0;
+}
+
+static const struct of_device_id imx_lcd_dt_ids[] = {
+	{ .compatible = "fsl,lcd"},
+	{ /* sentinel */ }
+};
+static struct platform_driver mxc_lcdif_driver = {
+	.driver = {
+		.name = "mxc_lcdif",
+		.of_match_table	= imx_lcd_dt_ids,
+	},
+	.probe = mxc_lcdif_probe,
+	.remove = mxc_lcdif_remove,
+};
+
+static int __init mxc_lcdif_init(void)
+{
+	return platform_driver_register(&mxc_lcdif_driver);
+}
+
+static void __exit mxc_lcdif_exit(void)
+{
+	platform_driver_unregister(&mxc_lcdif_driver);
+}
+
+module_init(mxc_lcdif_init);
+module_exit(mxc_lcdif_exit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("i.MX ipuv3 LCD extern port driver");
+MODULE_LICENSE("GPL");