--- /dev/null
+/*
+ * drivers/video/tegra/host/vi/tegra_vi.c
+ *
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/nvhost.h>
+#include <linux/nvhost_vi_ioctl.h>
+#include <linux/platform_device.h>
+
+#include "bus_client.h"
+#include "chip_support.h"
+#include "host1x/host1x.h"
+#include "vi.h"
+
+#define T12_VI_CFG_CG_CTRL 0x2e
+#define T12_CG_2ND_LEVEL_EN 1
+#define T12_VI_CSI_0_SW_RESET 0x40
+#define T12_VI_CSI_1_SW_RESET 0x80
+#define T12_VI_CSI_SW_RESET_MCCIF_RESET 3
+
+#ifdef TEGRA_12X_OR_HIGHER_CONFIG
+int nvhost_vi_init(struct platform_device *dev)
+{
+ int ret = 0;
+ struct vi *tegra_vi;
+ tegra_vi = (struct vi *)nvhost_get_private_data(dev);
+
+ tegra_vi->reg = regulator_get(&dev->dev, "avdd_dsi_csi");
+ if (IS_ERR(tegra_vi->reg)) {
+ if (tegra_vi->reg == ERR_PTR(-ENODEV)) {
+ ret = -ENODEV;
+ dev_info(&dev->dev,
+ "%s: no regulator device\n",
+ __func__);
+ } else {
+ dev_err(&dev->dev,
+ "%s: couldn't get regulator\n",
+ __func__);
+ }
+ tegra_vi->reg = NULL;
+ }
+ return ret;
+}
+
+void nvhost_vi_deinit(struct platform_device *dev)
+{
+ struct vi *tegra_vi;
+ tegra_vi = (struct vi *)nvhost_get_private_data(dev);
+
+ if (tegra_vi->reg)
+ regulator_put(tegra_vi->reg);
+}
+
+int nvhost_vi_finalize_poweron(struct platform_device *dev)
+{
+ int ret = 0;
+ struct vi *tegra_vi;
+ tegra_vi = (struct vi *)nvhost_get_private_data(dev);
+
+ if (tegra_vi->reg) {
+ ret = regulator_enable(tegra_vi->reg);
+ if (ret)
+ dev_err(&dev->dev,
+ "%s: enable csi regulator failed.\n",
+ __func__);
+ }
+
+ if (nvhost_client_can_writel(dev))
+ nvhost_client_writel(dev,
+ T12_CG_2ND_LEVEL_EN, T12_VI_CFG_CG_CTRL);
+ return ret;
+}
+
+int nvhost_vi_prepare_poweroff(struct platform_device *dev)
+{
+ int ret = 0;
+ struct vi *tegra_vi;
+ tegra_vi = (struct vi *)nvhost_get_private_data(dev);
+
+ if (tegra_vi->reg) {
+ ret = regulator_disable(tegra_vi->reg);
+ if (ret)
+ dev_err(&dev->dev,
+ "%s: disable csi regulator failed.\n",
+ __func__);
+ }
+ return ret;
+}
+
+long tegra_vi_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct vi *tegra_vi;
+
+ if (_IOC_TYPE(cmd) != NVHOST_VI_IOCTL_MAGIC)
+ return -EFAULT;
+
+ tegra_vi = file->private_data;
+ switch (cmd) {
+ case NVHOST_VI_IOCTL_ENABLE_TPG: {
+ uint enable;
+ int ret;
+ struct clk *clk;
+
+ if (copy_from_user(&enable,
+ (const void __user *)arg, sizeof(uint))) {
+ dev_err(&tegra_vi->ndev->dev,
+ "%s: Failed to copy arg from user\n", __func__);
+ return -EFAULT;
+ }
+
+ clk = clk_get(&tegra_vi->ndev->dev, "pll_d");
+ if (enable)
+ ret = tegra_clk_cfg_ex(clk,
+ TEGRA_CLK_PLLD_CSI_OUT_ENB, 1);
+ else
+ ret = tegra_clk_cfg_ex(clk,
+ TEGRA_CLK_MIPI_CSI_OUT_ENB, 1);
+ clk_put(clk);
+
+ return ret;
+ }
+ default:
+ dev_err(&tegra_vi->ndev->dev,
+ "%s: Unknown vi ioctl.\n", __func__);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int tegra_vi_open(struct inode *inode, struct file *file)
+{
+ struct nvhost_device_data *pdata;
+ struct vi *vi;
+
+ pdata = container_of(inode->i_cdev,
+ struct nvhost_device_data, ctrl_cdev);
+ BUG_ON(pdata == NULL);
+
+ vi = (struct vi *)pdata->private_data;
+ BUG_ON(vi == NULL);
+
+ file->private_data = vi;
+ return 0;
+}
+
+static int tegra_vi_release(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+const struct file_operations tegra_vi_ctrl_ops = {
+ .owner = THIS_MODULE,
+ .open = tegra_vi_open,
+ .unlocked_ioctl = tegra_vi_ioctl,
+ .release = tegra_vi_release,
+};
+#endif
+
+void nvhost_vi_reset(struct platform_device *pdev)
+{
+ u32 reset_reg;
+
+ if (pdev->id == 0)
+ reset_reg = T12_VI_CSI_0_SW_RESET;
+ else
+ reset_reg = T12_VI_CSI_1_SW_RESET;
+
+ nvhost_client_writel(pdev, T12_VI_CSI_SW_RESET_MCCIF_RESET,
+ reset_reg);
+
+ udelay(10);
+
+ nvhost_client_writel(pdev, 0, reset_reg);
+}
+
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
-#include <linux/nvhost_vi_ioctl.h>
#include <linux/clk/tegra.h>
#include <mach/pm_domains.h>
#include "vi.h"
#define MAX_DEVID_LENGTH 16
-#define T12_VI_CFG_CG_CTRL 0x2e
-#define T12_CG_2ND_LEVEL_EN 1
-#define T12_VI_CSI_0_SW_RESET 0x40
-#define T12_VI_CSI_1_SW_RESET 0x80
-#define T12_VI_CSI_SW_RESET_MCCIF_RESET 3
static struct of_device_id tegra_vi_of_match[] = {
#ifdef TEGRA_11X_OR_HIGHER_CONFIG
platform_driver_unregister(&vi_driver);
}
-#ifdef TEGRA_12X_OR_HIGHER_CONFIG
-int nvhost_vi_init(struct platform_device *dev)
-{
- int ret = 0;
- struct vi *tegra_vi;
- tegra_vi = (struct vi *)nvhost_get_private_data(dev);
-
- tegra_vi->reg = regulator_get(&dev->dev, "avdd_dsi_csi");
- if (IS_ERR(tegra_vi->reg)) {
- if (tegra_vi->reg == ERR_PTR(-ENODEV)) {
- ret = -ENODEV;
- dev_info(&dev->dev,
- "%s: no regulator device\n",
- __func__);
- } else {
- dev_err(&dev->dev,
- "%s: couldn't get regulator\n",
- __func__);
- }
- tegra_vi->reg = NULL;
- }
- return ret;
-}
-
-void nvhost_vi_deinit(struct platform_device *dev)
-{
- struct vi *tegra_vi;
- tegra_vi = (struct vi *)nvhost_get_private_data(dev);
-
- if (tegra_vi->reg)
- regulator_put(tegra_vi->reg);
-}
-
-int nvhost_vi_finalize_poweron(struct platform_device *dev)
-{
- int ret = 0;
- struct vi *tegra_vi;
- tegra_vi = (struct vi *)nvhost_get_private_data(dev);
-
- if (tegra_vi->reg) {
- ret = regulator_enable(tegra_vi->reg);
- if (ret)
- dev_err(&dev->dev,
- "%s: enable csi regulator failed.\n",
- __func__);
- }
-
- if (nvhost_client_can_writel(dev))
- nvhost_client_writel(dev,
- T12_CG_2ND_LEVEL_EN, T12_VI_CFG_CG_CTRL);
- return ret;
-}
-
-int nvhost_vi_prepare_poweroff(struct platform_device *dev)
-{
- int ret = 0;
- struct vi *tegra_vi;
- tegra_vi = (struct vi *)nvhost_get_private_data(dev);
-
- if (tegra_vi->reg) {
- ret = regulator_disable(tegra_vi->reg);
- if (ret)
- dev_err(&dev->dev,
- "%s: disable csi regulator failed.\n",
- __func__);
- }
- return ret;
-}
-
-long tegra_vi_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct vi *tegra_vi;
-
- if (_IOC_TYPE(cmd) != NVHOST_VI_IOCTL_MAGIC)
- return -EFAULT;
-
- tegra_vi = file->private_data;
- switch (cmd) {
- case NVHOST_VI_IOCTL_ENABLE_TPG: {
- uint enable;
- int ret;
- struct clk *clk;
-
- if (copy_from_user(&enable,
- (const void __user *)arg, sizeof(uint))) {
- dev_err(&tegra_vi->ndev->dev,
- "%s: Failed to copy arg from user\n", __func__);
- return -EFAULT;
- }
-
- clk = clk_get(&tegra_vi->ndev->dev, "pll_d");
- if (enable)
- ret = tegra_clk_cfg_ex(clk,
- TEGRA_CLK_PLLD_CSI_OUT_ENB, 1);
- else
- ret = tegra_clk_cfg_ex(clk,
- TEGRA_CLK_MIPI_CSI_OUT_ENB, 1);
- clk_put(clk);
-
- return ret;
- }
- default:
- dev_err(&tegra_vi->ndev->dev,
- "%s: Unknown vi ioctl.\n", __func__);
- return -EINVAL;
- }
- return 0;
-}
-
-static int tegra_vi_open(struct inode *inode, struct file *file)
-{
- struct nvhost_device_data *pdata;
- struct vi *vi;
-
- pdata = container_of(inode->i_cdev,
- struct nvhost_device_data, ctrl_cdev);
- BUG_ON(pdata == NULL);
-
- vi = (struct vi *)pdata->private_data;
- BUG_ON(vi == NULL);
-
- file->private_data = vi;
- return 0;
-}
-
-static int tegra_vi_release(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-const struct file_operations tegra_vi_ctrl_ops = {
- .owner = THIS_MODULE,
- .open = tegra_vi_open,
- .unlocked_ioctl = tegra_vi_ioctl,
- .release = tegra_vi_release,
-};
-#endif
-
-void nvhost_vi_reset(struct platform_device *pdev)
-{
- u32 reset_reg;
-
- if (pdev->id == 0)
- reset_reg = T12_VI_CSI_0_SW_RESET;
- else
- reset_reg = T12_VI_CSI_1_SW_RESET;
-
- nvhost_client_writel(pdev, T12_VI_CSI_SW_RESET_MCCIF_RESET,
- reset_reg);
-
- udelay(10);
-
- nvhost_client_writel(pdev, 0, reset_reg);
-}
-
late_initcall(vi_init);
module_exit(vi_exit);
MODULE_LICENSE("GPL v2");
projects / sojka / nv-tegra / linux-3.10.git / commitdiff