Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/drivers/video/msm/mddi_ext.c b/drivers/video/msm/mddi_ext.c
new file mode 100644
index 0000000..0ecd593
--- /dev/null
+++ b/drivers/video/msm/mddi_ext.c
@@ -0,0 +1,363 @@
+/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <mach/hardware.h>
+#include <asm/io.h>
+
+#include <asm/system.h>
+#include <asm/mach-types.h>
+#include <linux/semaphore.h>
+#include <linux/uaccess.h>
+#include <linux/clk.h>
+#include <mach/clk.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+#include "msm_fb.h"
+#include "mddihosti.h"
+
+static int mddi_ext_probe(struct platform_device *pdev);
+static int mddi_ext_remove(struct platform_device *pdev);
+
+static int mddi_ext_off(struct platform_device *pdev);
+static int mddi_ext_on(struct platform_device *pdev);
+
+static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
+static int pdev_list_cnt;
+
+static int mddi_ext_suspend(struct platform_device *pdev, pm_message_t state);
+static int mddi_ext_resume(struct platform_device *pdev);
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void mddi_ext_early_suspend(struct early_suspend *h);
+static void mddi_ext_early_resume(struct early_suspend *h);
+#endif
+
+static int mddi_ext_runtime_suspend(struct device *dev)
+{
+ dev_dbg(dev, "pm_runtime: suspending...\n");
+ return 0;
+}
+
+static int mddi_ext_runtime_resume(struct device *dev)
+{
+ dev_dbg(dev, "pm_runtime: resuming...\n");
+ return 0;
+}
+
+static int mddi_ext_runtime_idle(struct device *dev)
+{
+ dev_dbg(dev, "pm_runtime: idling...\n");
+ return 0;
+}
+static struct dev_pm_ops mddi_ext_dev_pm_ops = {
+ .runtime_suspend = mddi_ext_runtime_suspend,
+ .runtime_resume = mddi_ext_runtime_resume,
+ .runtime_idle = mddi_ext_runtime_idle,
+};
+
+static struct platform_driver mddi_ext_driver = {
+ .probe = mddi_ext_probe,
+ .remove = mddi_ext_remove,
+#ifndef CONFIG_HAS_EARLYSUSPEND
+#ifdef CONFIG_PM
+ .suspend = mddi_ext_suspend,
+ .resume = mddi_ext_resume,
+#endif
+#endif
+ .resume_early = NULL,
+ .resume = NULL,
+ .shutdown = NULL,
+ .driver = {
+ .name = "mddi_ext",
+ .pm = &mddi_ext_dev_pm_ops,
+ },
+};
+
+static struct clk *mddi_ext_clk;
+static struct clk *mddi_ext_pclk;
+static struct mddi_platform_data *mddi_ext_pdata;
+
+extern int int_mddi_ext_flag;
+
+static int mddi_ext_off(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ ret = panel_next_off(pdev);
+ mddi_host_stop_ext_display();
+ pm_runtime_put(&pdev->dev);
+ return ret;
+}
+
+static int mddi_ext_on(struct platform_device *pdev)
+{
+ int ret = 0;
+ u32 clk_rate;
+ struct msm_fb_data_type *mfd;
+
+ mfd = platform_get_drvdata(pdev);
+ pm_runtime_get(&pdev->dev);
+ clk_rate = mfd->fbi->var.pixclock;
+ clk_rate = min(clk_rate, mfd->panel_info.clk_max);
+
+ if (mddi_ext_pdata &&
+ mddi_ext_pdata->mddi_sel_clk &&
+ mddi_ext_pdata->mddi_sel_clk(&clk_rate))
+ printk(KERN_ERR
+ "%s: can't select mddi io clk targate rate = %d\n",
+ __func__, clk_rate);
+
+ if (clk_set_min_rate(mddi_ext_clk, clk_rate) < 0)
+ printk(KERN_ERR "%s: clk_set_min_rate failed\n",
+ __func__);
+
+ mddi_host_start_ext_display();
+ ret = panel_next_on(pdev);
+
+ return ret;
+}
+
+static int mddi_ext_resource_initialized;
+
+static int mddi_ext_probe(struct platform_device *pdev)
+{
+ struct msm_fb_data_type *mfd;
+ struct platform_device *mdp_dev = NULL;
+ struct msm_fb_panel_data *pdata = NULL;
+ int rc;
+ resource_size_t size ;
+ u32 clk_rate;
+
+ if ((pdev->id == 0) && (pdev->num_resources >= 0)) {
+ mddi_ext_pdata = pdev->dev.platform_data;
+
+ size = resource_size(&pdev->resource[0]);
+ msm_emdh_base = ioremap(pdev->resource[0].start, size);
+
+ MSM_FB_INFO("external mddi base address = 0x%x\n",
+ pdev->resource[0].start);
+
+ if (unlikely(!msm_emdh_base))
+ return -ENOMEM;
+
+ mddi_ext_resource_initialized = 1;
+ return 0;
+ }
+
+ if (!mddi_ext_resource_initialized)
+ return -EPERM;
+
+ mfd = platform_get_drvdata(pdev);
+
+ if (!mfd)
+ return -ENODEV;
+
+ if (mfd->key != MFD_KEY)
+ return -EINVAL;
+
+ if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
+ return -ENOMEM;
+
+ mdp_dev = platform_device_alloc("mdp", pdev->id);
+ if (!mdp_dev)
+ return -ENOMEM;
+
+ /*
+ * link to the latest pdev
+ */
+ mfd->pdev = mdp_dev;
+ mfd->dest = DISPLAY_EXT_MDDI;
+
+ /*
+ * alloc panel device data
+ */
+ if (platform_device_add_data
+ (mdp_dev, pdev->dev.platform_data,
+ sizeof(struct msm_fb_panel_data))) {
+ printk(KERN_ERR "mddi_ext_probe: platform_device_add_data failed!\n");
+ platform_device_put(mdp_dev);
+ return -ENOMEM;
+ }
+ /*
+ * data chain
+ */
+ pdata = mdp_dev->dev.platform_data;
+ pdata->on = mddi_ext_on;
+ pdata->off = mddi_ext_off;
+ pdata->next = pdev;
+
+ /*
+ * get/set panel specific fb info
+ */
+ mfd->panel_info = pdata->panel_info;
+ mfd->fb_imgType = MDP_RGB_565;
+
+ clk_rate = mfd->panel_info.clk_max;
+ if (mddi_ext_pdata &&
+ mddi_ext_pdata->mddi_sel_clk &&
+ mddi_ext_pdata->mddi_sel_clk(&clk_rate))
+ printk(KERN_ERR
+ "%s: can't select mddi io clk targate rate = %d\n",
+ __func__, clk_rate);
+
+ if (clk_set_max_rate(mddi_ext_clk, clk_rate) < 0)
+ printk(KERN_ERR "%s: clk_set_max_rate failed\n", __func__);
+ mfd->panel_info.clk_rate = mfd->panel_info.clk_min;
+
+ /*
+ * set driver data
+ */
+ platform_set_drvdata(mdp_dev, mfd);
+ rc = pm_runtime_set_active(&pdev->dev);
+ if (rc < 0)
+ printk(KERN_ERR "pm_runtime: fail to set active\n");
+
+ rc = 0;
+ pm_runtime_enable(&pdev->dev);
+ /*
+ * register in mdp driver
+ */
+ rc = platform_device_add(mdp_dev);
+ if (rc)
+ goto mddi_ext_probe_err;
+
+ pdev_list[pdev_list_cnt++] = pdev;
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ mfd->mddi_ext_early_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
+ mfd->mddi_ext_early_suspend.suspend = mddi_ext_early_suspend;
+ mfd->mddi_ext_early_suspend.resume = mddi_ext_early_resume;
+ register_early_suspend(&mfd->mddi_ext_early_suspend);
+#endif
+
+ return 0;
+
+mddi_ext_probe_err:
+ platform_device_put(mdp_dev);
+ return rc;
+}
+
+static int mddi_ext_is_in_suspend;
+
+static int mddi_ext_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ if (mddi_ext_is_in_suspend)
+ return 0;
+
+ mddi_ext_is_in_suspend = 1;
+
+ if (clk_set_min_rate(mddi_ext_clk, 0) < 0)
+ printk(KERN_ERR "%s: clk_set_min_rate failed\n", __func__);
+
+ clk_disable(mddi_ext_clk);
+ if (mddi_ext_pclk)
+ clk_disable(mddi_ext_pclk);
+
+ disable_irq(INT_MDDI_EXT);
+
+ return 0;
+}
+
+static int mddi_ext_resume(struct platform_device *pdev)
+{
+ struct msm_fb_data_type *mfd;
+
+ mfd = platform_get_drvdata(pdev);
+
+ if (!mddi_ext_is_in_suspend)
+ return 0;
+
+ mddi_ext_is_in_suspend = 0;
+ enable_irq(INT_MDDI_EXT);
+
+ clk_enable(mddi_ext_clk);
+ if (mddi_ext_pclk)
+ clk_enable(mddi_ext_pclk);
+
+ return 0;
+}
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void mddi_ext_early_suspend(struct early_suspend *h)
+{
+ pm_message_t state;
+ struct msm_fb_data_type *mfd = container_of(h, struct msm_fb_data_type,
+ mddi_ext_early_suspend);
+
+ state.event = PM_EVENT_SUSPEND;
+ mddi_ext_suspend(mfd->pdev, state);
+}
+
+static void mddi_ext_early_resume(struct early_suspend *h)
+{
+ struct msm_fb_data_type *mfd = container_of(h, struct msm_fb_data_type,
+ mddi_ext_early_suspend);
+ mddi_ext_resume(mfd->pdev);
+}
+#endif
+
+static int mddi_ext_remove(struct platform_device *pdev)
+{
+ pm_runtim_disable(&pdev->dev);
+ iounmap(msm_emdh_base);
+ return 0;
+}
+
+static int mddi_ext_register_driver(void)
+{
+ return platform_driver_register(&mddi_ext_driver);
+}
+
+static int __init mddi_ext_driver_init(void)
+{
+ int ret;
+
+ mddi_ext_clk = clk_get(NULL, "emdh_clk");
+ if (IS_ERR(mddi_ext_clk)) {
+ printk(KERN_ERR "can't find emdh_clk\n");
+ return PTR_ERR(mddi_ext_clk);
+ }
+ clk_enable(mddi_ext_clk);
+
+ mddi_ext_pclk = clk_get(NULL, "emdh_pclk");
+ if (IS_ERR(mddi_ext_pclk))
+ mddi_ext_pclk = NULL;
+ else
+ clk_enable(mddi_ext_pclk);
+
+ ret = mddi_ext_register_driver();
+ if (ret) {
+ clk_disable(mddi_ext_clk);
+ clk_put(mddi_ext_clk);
+ if (mddi_ext_pclk) {
+ clk_disable(mddi_ext_pclk);
+ clk_put(mddi_ext_pclk);
+ }
+ printk(KERN_ERR "mddi_ext_register_driver() failed!\n");
+ return ret;
+ }
+ mddi_init();
+
+ return ret;
+}
+
+module_init(mddi_ext_driver_init);