Message-Id: <1351783082-11411-3-git-send-email-panto@antoniou-consulting.com>
Date:	Thu,  1 Nov 2012 17:18:01 +0200
From:	Pantelis Antoniou <panto@...oniou-consulting.com>
To:	Tony Lindgren <tony@...mide.com>
Cc:	Pantelis Antoniou <panto@...oniou-consulting.com>,
	linux-kernel@...r.kernel.org,
	Koen Kooi <koen@...inion.thruhere.net>,
	Matt Porter <mporter@...com>, Russ Dill <Russ.Dill@...com>,
	linux-omap@...r.kernel.org
Subject: [PATCH 2/3] da8xx-dt: Create da8xx DT adapter device

omap_device is going private.

Move the da8xx-dt adapter device to arch/arm/mach-omap2.

Signed-off-by: Pantelis Antoniou <panto@...oniou-consulting.com>
---
 arch/arm/mach-omap2/Makefile   |   3 +
 arch/arm/mach-omap2/da8xx-dt.c | 197 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 200 insertions(+)
 create mode 100644 arch/arm/mach-omap2/da8xx-dt.c

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index fe40d9e..3a9a0ff 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -200,6 +200,9 @@ ifneq ($(CONFIG_DRM_OMAP),)
 obj-y					+= drm.o
 endif
 
+# AM3XX Device Tree adapters for legacy drivers
+obj-$(CONFIG_SOC_AM33XX)		+= da8xx-dt.o
+
 # Specific board support
 obj-$(CONFIG_MACH_OMAP_GENERIC)		+= board-generic.o
 obj-$(CONFIG_MACH_OMAP_H4)		+= board-h4.o
diff --git a/arch/arm/mach-omap2/da8xx-dt.c b/arch/arm/mach-omap2/da8xx-dt.c
new file mode 100644
index 0000000..d3c6f48
--- /dev/null
+++ b/arch/arm/mach-omap2/da8xx-dt.c
@@ -0,0 +1,197 @@
+/*
+ * DA8XX-DT: Device tree adapter using the legacy driver
+ *
+ * Copyright (C) 2012 Pantelis Antoniou <panto@...oniou-consulting.com>
+ * Copyright (C) 2012 Texas Instruments Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <video/da8xx-fb.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/clk.h>
+#include <plat/clock.h>
+#include <plat/omap_device.h>
+
+struct da8xx_priv {
+	struct da8xx_lcdc_platform_data lcd_pdata;
+	struct lcd_ctrl_config lcd_cfg;
+	struct display_panel lcd_panel;
+	struct platform_device *lcdc_pdev;
+	struct omap_hwmod *lcdc_oh;
+	struct resource lcdc_res[1];
+	int power_dn_gpio;
+};
+
+static const struct of_device_id of_da8xx_dt_match[] = {
+	{ .compatible = "da8xx-dt", },
+	{},
+};
+
+static int __devinit da8xx_dt_probe(struct platform_device *pdev)
+{
+	struct da8xx_priv *priv;
+	struct clk *disp_pll;
+	struct pinctrl *pinctrl;
+	u32 disp_pll_val;
+	const char *panel_type;
+	int ret = -EINVAL;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (priv == NULL) {
+		dev_err(&pdev->dev, "Failed to allocate priv\n");
+		return -ENOMEM;
+	}
+	priv->power_dn_gpio = -1;
+
+	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+	if (IS_ERR(pinctrl))
+		dev_warn(&pdev->dev,
+			"pins are not configured from the driver\n");
+
+	ret = of_property_read_u32(pdev->dev.of_node, "disp-pll",
+			&disp_pll_val);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to read disp-pll property\n");
+		return ret;
+	}
+
+	ret = of_property_read_string(pdev->dev.of_node, "panel-type",
+			&panel_type);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to read panel-type property\n");
+		return ret;
+	}
+
+	/* conf_disp_pll(disp_pll); */
+	disp_pll = clk_get(NULL, "dpll_disp_ck");
+	if (IS_ERR(disp_pll)) {
+		dev_err(&pdev->dev, "Cannot clk_get disp_pll\n");
+		return PTR_ERR(disp_pll);
+	}
+	ret = clk_set_rate(disp_pll, disp_pll_val);
+	clk_put(disp_pll);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to set disp_pll\n");
+		return ret;
+	}
+
+	ret = of_get_named_gpio_flags(pdev->dev.of_node, "powerdn-gpio",
+			0, NULL);
+	if (IS_ERR_VALUE(ret)) {
+		dev_info(&pdev->dev, "No power down GPIO\n");
+	} else {
+		priv->power_dn_gpio = ret;
+
+		ret = devm_gpio_request(&pdev->dev, priv->power_dn_gpio,
+				"da8xx-dt:PDN");
+		if (ret != 0) {
+			dev_err(&pdev->dev, "Failed to gpio_request\n");
+			return ret;
+		}
+
+		ret = gpio_direction_output(priv->power_dn_gpio, 1);
+		if (ret != 0) {
+			dev_err(&pdev->dev, "Failed to set powerdn to 1\n");
+			return ret;
+		}
+	}
+
+	/* display_panel */
+	priv->lcd_panel.panel_type	= QVGA;
+	priv->lcd_panel.max_bpp		= 16;
+	priv->lcd_panel.min_bpp		= 16;
+	priv->lcd_panel.panel_shade	= COLOR_ACTIVE;
+
+	/* lcd_ctrl_config */
+	priv->lcd_cfg.p_disp_panel	= &priv->lcd_panel;
+	priv->lcd_cfg.ac_bias		= 255;
+	priv->lcd_cfg.ac_bias_intrpt	= 0;
+	priv->lcd_cfg.dma_burst_sz	= 16;
+	priv->lcd_cfg.bpp		= 16;
+	priv->lcd_cfg.fdd		= 0x80;
+	priv->lcd_cfg.tft_alt_mode	= 0;
+	priv->lcd_cfg.stn_565_mode	= 0;
+	priv->lcd_cfg.mono_8bit_mode	= 0;
+	priv->lcd_cfg.invert_line_clock	= 1;
+	priv->lcd_cfg.invert_frm_clock	= 1;
+	priv->lcd_cfg.sync_edge		= 0;
+	priv->lcd_cfg.sync_ctrl		= 1;
+	priv->lcd_cfg.raster_order	= 0;
+
+	/* da8xx_lcdc_platform_data */
+	strcpy(priv->lcd_pdata.manu_name, "BBToys");
+	priv->lcd_pdata.controller_data = &priv->lcd_cfg;
+	strcpy(priv->lcd_pdata.type, panel_type);
+
+	priv->lcdc_oh = omap_hwmod_lookup("lcdc");
+	if (priv->lcdc_oh == NULL) {
+		dev_err(&pdev->dev, "Failed to lookup omap_hwmod lcdc\n");
+		return -ENODEV;
+	}
+
+	priv->lcdc_pdev = omap_device_build("da8xx_lcdc", 0, priv->lcdc_oh,
+			&priv->lcd_pdata,
+			sizeof(struct da8xx_lcdc_platform_data),
+			NULL, 0, 0);
+	if (priv->lcdc_pdev == NULL) {
+		dev_err(&pdev->dev, "Failed to build LCDC device\n");
+		return -ENODEV;
+	}
+
+	dev_info(&pdev->dev, "Registered bone LCDC OK.\n");
+
+	platform_set_drvdata(pdev, priv);
+
+	return 0;
+}
+
+static int __devexit da8xx_dt_remove(struct platform_device *pdev)
+{
+	return -EINVAL;	/* not supporting removal yet */
+}
+
+static struct platform_driver da8xx_dt_driver = {
+	.probe		= da8xx_dt_probe,
+	.remove		= __devexit_p(da8xx_dt_remove),
+	.driver		= {
+		.name	= "da8xx-dt",
+		.owner	= THIS_MODULE,
+		.of_match_table = of_da8xx_dt_match,
+	},
+};
+
+static __init int da8xx_dt_init(void)
+{
+	return platform_driver_register(&da8xx_dt_driver);
+}
+
+static __exit void da8xx_dt_exit(void)
+{
+	platform_driver_unregister(&da8xx_dt_driver);
+}
+
+postcore_initcall(da8xx_dt_init);
+module_exit(da8xx_dt_exit);
-- 
1.7.12

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