--- /dev/null
+/* drivers/video/msm_fb/mddi_client_toshiba.c
+ *
+ * Support for Toshiba TC358720XBG mddi client devices which require no
+ * special initialization code.
+ *
+ * Copyright (C) 2007 Google Incorporated
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/platform_data/video-msm_fb.h>
+
+
+#define LCD_CONTROL_BLOCK_BASE 0x110000
+#define CMN (LCD_CONTROL_BLOCK_BASE|0x10)
+#define INTFLG (LCD_CONTROL_BLOCK_BASE|0x18)
+#define HCYCLE (LCD_CONTROL_BLOCK_BASE|0x34)
+#define HDE_START (LCD_CONTROL_BLOCK_BASE|0x3C)
+#define VPOS (LCD_CONTROL_BLOCK_BASE|0xC0)
+#define MPLFBUF (LCD_CONTROL_BLOCK_BASE|0x20)
+#define WAKEUP (LCD_CONTROL_BLOCK_BASE|0x54)
+#define WSYN_DLY (LCD_CONTROL_BLOCK_BASE|0x58)
+#define REGENB (LCD_CONTROL_BLOCK_BASE|0x5C)
+
+#define BASE5 0x150000
+#define BASE6 0x160000
+#define BASE7 0x170000
+
+#define GPIOIEV (BASE5 + 0x10)
+#define GPIOIE (BASE5 + 0x14)
+#define GPIORIS (BASE5 + 0x18)
+#define GPIOMIS (BASE5 + 0x1C)
+#define GPIOIC (BASE5 + 0x20)
+
+#define INTMASK (BASE6 + 0x0C)
+#define INTMASK_VWAKEOUT (1U << 0)
+#define INTMASK_VWAKEOUT_ACTIVE_LOW (1U << 8)
+#define GPIOSEL (BASE7 + 0x00)
+#define GPIOSEL_VWAKEINT (1U << 0)
+
+static DECLARE_WAIT_QUEUE_HEAD(toshiba_vsync_wait);
+
+struct panel_info {
+ struct msm_mddi_client_data *client_data;
+ struct platform_device pdev;
+ struct msm_panel_data panel_data;
+ struct msmfb_callback *toshiba_callback;
+ int toshiba_got_int;
+};
+
+
+static void toshiba_request_vsync(struct msm_panel_data *panel_data,
+ struct msmfb_callback *callback)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+
+ panel->toshiba_callback = callback;
+ if (panel->toshiba_got_int) {
+ panel->toshiba_got_int = 0;
+ client_data->activate_link(client_data);
+ }
+}
+
+static void toshiba_clear_vsync(struct msm_panel_data *panel_data)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+
+ client_data->activate_link(client_data);
+}
+
+static void toshiba_wait_vsync(struct msm_panel_data *panel_data)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+
+ if (panel->toshiba_got_int) {
+ panel->toshiba_got_int = 0;
+ client_data->activate_link(client_data); /* clears interrupt */
+ }
+ if (wait_event_timeout(toshiba_vsync_wait, panel->toshiba_got_int,
+ HZ/2) == 0)
+ printk(KERN_ERR "timeout waiting for VSYNC\n");
+ panel->toshiba_got_int = 0;
+ /* interrupt clears when screen dma starts */
+}
+
+static int toshiba_suspend(struct msm_panel_data *panel_data)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+
+ struct msm_mddi_bridge_platform_data *bridge_data =
+ client_data->private_client_data;
+ int ret;
+
+ ret = bridge_data->uninit(bridge_data, client_data);
+ if (ret) {
+ printk(KERN_INFO "mddi toshiba client: non zero return from "
+ "uninit\n");
+ return ret;
+ }
+ client_data->suspend(client_data);
+ return 0;
+}
+
+static int toshiba_resume(struct msm_panel_data *panel_data)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+
+ struct msm_mddi_bridge_platform_data *bridge_data =
+ client_data->private_client_data;
+ int ret;
+
+ client_data->resume(client_data);
+ ret = bridge_data->init(bridge_data, client_data);
+ if (ret)
+ return ret;
+ return 0;
+}
+
+static int toshiba_blank(struct msm_panel_data *panel_data)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+ struct msm_mddi_bridge_platform_data *bridge_data =
+ client_data->private_client_data;
+
+ return bridge_data->blank(bridge_data, client_data);
+}
+
+static int toshiba_unblank(struct msm_panel_data *panel_data)
+{
+ struct panel_info *panel = container_of(panel_data, struct panel_info,
+ panel_data);
+ struct msm_mddi_client_data *client_data = panel->client_data;
+ struct msm_mddi_bridge_platform_data *bridge_data =
+ client_data->private_client_data;
+
+ return bridge_data->unblank(bridge_data, client_data);
+}
+
+irqreturn_t toshiba_vsync_interrupt(int irq, void *data)
+{
+ struct panel_info *panel = data;
+
+ panel->toshiba_got_int = 1;
+ if (panel->toshiba_callback) {
+ panel->toshiba_callback->func(panel->toshiba_callback);
+ panel->toshiba_callback = 0;
+ }
+ wake_up(&toshiba_vsync_wait);
+ return IRQ_HANDLED;
+}
+
+static int setup_vsync(struct panel_info *panel,
+ int init)
+{
+ int ret;
+ int gpio = 97;
+ unsigned int irq;
+
+ if (!init) {
+ ret = 0;
+ goto uninit;
+ }
+ ret = gpio_request_one(gpio, GPIOF_IN, "vsync");
+ if (ret)
+ goto err_request_gpio_failed;
+
+ ret = irq = gpio_to_irq(gpio);
+ if (ret < 0)
+ goto err_get_irq_num_failed;
+
+ ret = request_irq(irq, toshiba_vsync_interrupt, IRQF_TRIGGER_RISING,
+ "vsync", panel);
+ if (ret)
+ goto err_request_irq_failed;
+ printk(KERN_INFO "vsync on gpio %d now %d\n",
+ gpio, gpio_get_value(gpio));
+ return 0;
+
+uninit:
+ free_irq(gpio_to_irq(gpio), panel);
+err_request_irq_failed:
+err_get_irq_num_failed:
+ gpio_free(gpio);
+err_request_gpio_failed:
+ return ret;
+}
+
+static int mddi_toshiba_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct msm_mddi_client_data *client_data = pdev->dev.platform_data;
+ struct msm_mddi_bridge_platform_data *bridge_data =
+ client_data->private_client_data;
+ struct panel_info *panel =
+ kzalloc(sizeof(struct panel_info), GFP_KERNEL);
+ if (!panel)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, panel);
+
+ /* mddi_remote_write(mddi, 0, WAKEUP); */
+ client_data->remote_write(client_data, GPIOSEL_VWAKEINT, GPIOSEL);
+ client_data->remote_write(client_data, INTMASK_VWAKEOUT, INTMASK);
+
+ ret = setup_vsync(panel, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "mddi_bridge_setup_vsync failed\n");
+ return ret;
+ }
+
+ panel->client_data = client_data;
+ panel->panel_data.suspend = toshiba_suspend;
+ panel->panel_data.resume = toshiba_resume;
+ panel->panel_data.wait_vsync = toshiba_wait_vsync;
+ panel->panel_data.request_vsync = toshiba_request_vsync;
+ panel->panel_data.clear_vsync = toshiba_clear_vsync;
+ panel->panel_data.blank = toshiba_blank;
+ panel->panel_data.unblank = toshiba_unblank;
+ panel->panel_data.fb_data = &bridge_data->fb_data;
+ panel->panel_data.caps = MSMFB_CAP_PARTIAL_UPDATES;
+
+ panel->pdev.name = "msm_panel";
+ panel->pdev.id = pdev->id;
+ panel->pdev.resource = client_data->fb_resource;
+ panel->pdev.num_resources = 1;
+ panel->pdev.dev.platform_data = &panel->panel_data;
+ bridge_data->init(bridge_data, client_data);
+ platform_device_register(&panel->pdev);
+
+ return 0;
+}
+
+static int mddi_toshiba_remove(struct platform_device *pdev)
+{
+ struct panel_info *panel = platform_get_drvdata(pdev);
+
+ setup_vsync(panel, 0);
+ kfree(panel);
+ return 0;
+}
+
+static struct platform_driver mddi_client_d263_0000 = {
+ .probe = mddi_toshiba_probe,
+ .remove = mddi_toshiba_remove,
+ .driver = { .name = "mddi_c_d263_0000" },
+};
+
+static int __init mddi_client_toshiba_init(void)
+{
+ platform_driver_register(&mddi_client_d263_0000);
+ return 0;
+}
+
+module_init(mddi_client_toshiba_init);
+
Code Review / kvmfornfv.git / blobdiff