Add support for the i.MX53 QSB2.6.35.3-mx53-early-201103141049

This patch seems to have originated from the 11.01.00 release
from Freescale, which is no longer available except through the
gitweb interface from Freescale.

http://opensource.freescale.com/git?p=imx/linux-2.6-imx.git;a=commit;h=27fdf7bae11978d21e8aba09bb635f49b07edd4a

1 files changed, 696 insertions, 0 deletions

diff --git a/drivers/mxc/ipu/ipu_device.c b/drivers/mxc/ipu/ipu_device.c
new file mode 100644
index 000000000000..57314f7ebae8
--- /dev/null
+++ b/drivers/mxc/ipu/ipu_device.c
@@ -0,0 +1,696 @@
+/*
+ * Copyright 2005-2010 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
+ */
+
+/*!
+ * @file ipu_device.c
+ *
+ * @brief This file contains the IPU driver device interface and fops functions.
+ *
+ * @ingroup IPU
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/ipu.h>
+
+#include "ipu_prv.h"
+#include "ipu_regs.h"
+#include "ipu_param_mem.h"
+
+/* Strucutures and variables for exporting MXC IPU as device*/
+
+#define MAX_Q_SIZE 10
+
+static int mxc_ipu_major;
+static struct class *mxc_ipu_class;
+
+DEFINE_SPINLOCK(queue_lock);
+static DECLARE_MUTEX(user_mutex);
+
+static wait_queue_head_t waitq;
+static int pending_events;
+int read_ptr;
+int write_ptr;
+
+ipu_event_info events[MAX_Q_SIZE];
+
+int register_ipu_device(void);
+
+/* Static functions */
+
+int get_events(ipu_event_info *p)
+{
+	unsigned long flags;
+	int ret = 0, i, cnt, found = 0;
+	spin_lock_irqsave(&queue_lock, flags);
+	if (pending_events != 0) {
+		if (write_ptr > read_ptr)
+			cnt = write_ptr - read_ptr;
+		else
+			cnt = MAX_Q_SIZE - read_ptr + write_ptr;
+		for (i = 0; i < cnt; i++) {
+			if (p->irq == events[read_ptr].irq) {
+				*p = events[read_ptr];
+				events[read_ptr].irq = 0;
+				read_ptr++;
+				if (read_ptr >= MAX_Q_SIZE)
+					read_ptr = 0;
+				found = 1;
+				break;
+			}
+
+			if (events[read_ptr].irq) {
+				events[write_ptr] = events[read_ptr];
+				events[read_ptr].irq = 0;
+				write_ptr++;
+				if (write_ptr >= MAX_Q_SIZE)
+					write_ptr = 0;
+			} else
+				pending_events--;
+
+			read_ptr++;
+			if (read_ptr >= MAX_Q_SIZE)
+				read_ptr = 0;
+		}
+		if (found)
+			pending_events--;
+		else
+			ret = -1;
+	} else {
+		ret = -1;
+	}
+
+	spin_unlock_irqrestore(&queue_lock, flags);
+	return ret;
+}
+
+static irqreturn_t mxc_ipu_generic_handler(int irq, void *dev_id)
+{
+	ipu_event_info e;
+
+	e.irq = irq;
+	e.dev = dev_id;
+	events[write_ptr] = e;
+	write_ptr++;
+	if (write_ptr >= MAX_Q_SIZE)
+		write_ptr = 0;
+	pending_events++;
+	/* Wakeup any blocking user context */
+	wake_up_interruptible(&waitq);
+	return IRQ_HANDLED;
+}
+
+static int mxc_ipu_open(struct inode *inode, struct file *file)
+{
+	int ret = 0;
+	return ret;
+}
+static int mxc_ipu_ioctl(struct inode *inode, struct file *file,
+			 unsigned int cmd, unsigned long arg)
+{
+	int ret = 0;
+
+	switch (cmd) {
+
+	case IPU_INIT_CHANNEL:
+		{
+			ipu_channel_parm parm;
+			if (copy_from_user
+			    (&parm, (ipu_channel_parm *) arg,
+			     sizeof(ipu_channel_parm))) {
+				return -EFAULT;
+			}
+			if (!parm.flag) {
+				ret =
+				    ipu_init_channel(parm.channel,
+						     &parm.params);
+			} else {
+				ret = ipu_init_channel(parm.channel, NULL);
+			}
+		}
+		break;
+
+	case IPU_UNINIT_CHANNEL:
+		{
+			ipu_channel_t ch;
+			int __user *argp = (void __user *)arg;
+			if (get_user(ch, argp))
+				return -EFAULT;
+			ipu_uninit_channel(ch);
+		}
+		break;
+
+	case IPU_INIT_CHANNEL_BUFFER:
+		{
+			ipu_channel_buf_parm parm;
+			if (copy_from_user
+			    (&parm, (ipu_channel_buf_parm *) arg,
+			     sizeof(ipu_channel_buf_parm))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_init_channel_buffer(parm.channel, parm.type,
+						    parm.pixel_fmt,
+						    parm.width, parm.height,
+						    parm.stride,
+						    parm.rot_mode,
+						    parm.phyaddr_0,
+						    parm.phyaddr_1,
+						    parm.u_offset,
+						    parm.v_offset);
+
+		}
+		break;
+
+	case IPU_UPDATE_CHANNEL_BUFFER:
+		{
+			ipu_channel_buf_parm parm;
+			if (copy_from_user
+			    (&parm, (ipu_channel_buf_parm *) arg,
+			     sizeof(ipu_channel_buf_parm))) {
+				return -EFAULT;
+			}
+			if ((parm.phyaddr_0 != (dma_addr_t) NULL)
+			    && (parm.phyaddr_1 == (dma_addr_t) NULL)) {
+				ret =
+				    ipu_update_channel_buffer(parm.channel,
+							      parm.type,
+							      parm.bufNum,
+							      parm.phyaddr_0);
+			} else if ((parm.phyaddr_0 == (dma_addr_t) NULL)
+				   && (parm.phyaddr_1 != (dma_addr_t) NULL)) {
+				ret =
+				    ipu_update_channel_buffer(parm.channel,
+							      parm.type,
+							      parm.bufNum,
+							      parm.phyaddr_1);
+			} else {
+				ret = -1;
+			}
+
+		}
+		break;
+	case IPU_SELECT_CHANNEL_BUFFER:
+		{
+			ipu_channel_buf_parm parm;
+			if (copy_from_user
+			    (&parm, (ipu_channel_buf_parm *) arg,
+			     sizeof(ipu_channel_buf_parm))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_select_buffer(parm.channel, parm.type,
+					      parm.bufNum);
+
+		}
+		break;
+	case IPU_LINK_CHANNELS:
+		{
+			ipu_channel_link link;
+			if (copy_from_user
+			    (&link, (ipu_channel_link *) arg,
+			     sizeof(ipu_channel_link))) {
+				return -EFAULT;
+			}
+			ret = ipu_link_channels(link.src_ch, link.dest_ch);
+
+		}
+		break;
+	case IPU_UNLINK_CHANNELS:
+		{
+			ipu_channel_link link;
+			if (copy_from_user
+			    (&link, (ipu_channel_link *) arg,
+			     sizeof(ipu_channel_link))) {
+				return -EFAULT;
+			}
+			ret = ipu_unlink_channels(link.src_ch, link.dest_ch);
+
+		}
+		break;
+	case IPU_ENABLE_CHANNEL:
+		{
+			ipu_channel_t ch;
+			int __user *argp = (void __user *)arg;
+			if (get_user(ch, argp))
+				return -EFAULT;
+			ipu_enable_channel(ch);
+		}
+		break;
+	case IPU_DISABLE_CHANNEL:
+		{
+			ipu_channel_info info;
+			if (copy_from_user
+			    (&info, (ipu_channel_info *) arg,
+			     sizeof(ipu_channel_info))) {
+				return -EFAULT;
+			}
+			ret = ipu_disable_channel(info.channel, info.stop);
+		}
+		break;
+	case IPU_ENABLE_IRQ:
+		{
+			uint32_t irq;
+			int __user *argp = (void __user *)arg;
+			if (get_user(irq, argp))
+				return -EFAULT;
+			ipu_enable_irq(irq);
+		}
+		break;
+	case IPU_DISABLE_IRQ:
+		{
+			uint32_t irq;
+			int __user *argp = (void __user *)arg;
+			if (get_user(irq, argp))
+				return -EFAULT;
+			ipu_disable_irq(irq);
+		}
+		break;
+	case IPU_CLEAR_IRQ:
+		{
+			uint32_t irq;
+			int __user *argp = (void __user *)arg;
+			if (get_user(irq, argp))
+				return -EFAULT;
+			ipu_clear_irq(irq);
+		}
+		break;
+	case IPU_FREE_IRQ:
+		{
+			ipu_irq_info info;
+			if (copy_from_user
+			    (&info, (ipu_irq_info *) arg,
+			     sizeof(ipu_irq_info))) {
+				return -EFAULT;
+			}
+			ipu_free_irq(info.irq, info.dev_id);
+		}
+		break;
+	case IPU_REQUEST_IRQ_STATUS:
+		{
+			uint32_t irq;
+			int __user *argp = (void __user *)arg;
+			if (get_user(irq, argp))
+				return -EFAULT;
+			ret = ipu_get_irq_status(irq);
+		}
+		break;
+	case IPU_SDC_INIT_PANEL:
+		{
+			ipu_sdc_panel_info sinfo;
+			if (copy_from_user
+			    (&sinfo, (ipu_sdc_panel_info *) arg,
+			     sizeof(ipu_sdc_panel_info))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_sdc_init_panel(sinfo.panel, sinfo.pixel_clk,
+					       sinfo.width, sinfo.height,
+					       sinfo.pixel_fmt,
+					       sinfo.hStartWidth,
+					       sinfo.hSyncWidth,
+					       sinfo.hEndWidth,
+					       sinfo.vStartWidth,
+					       sinfo.vSyncWidth,
+					       sinfo.vEndWidth, sinfo.signal);
+		}
+		break;
+	case IPU_SDC_SET_WIN_POS:
+		{
+			ipu_sdc_window_pos pos;
+			if (copy_from_user
+			    (&pos, (ipu_sdc_window_pos *) arg,
+			     sizeof(ipu_sdc_window_pos))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_disp_set_window_pos(pos.channel, pos.x_pos,
+						   pos.y_pos);
+
+		}
+		break;
+	case IPU_SDC_SET_GLOBAL_ALPHA:
+		{
+			ipu_sdc_global_alpha g;
+			if (copy_from_user
+			    (&g, (ipu_sdc_global_alpha *) arg,
+			     sizeof(ipu_sdc_global_alpha))) {
+				return -EFAULT;
+			}
+			ret = ipu_sdc_set_global_alpha(g.enable, g.alpha);
+		}
+		break;
+	case IPU_SDC_SET_COLOR_KEY:
+		{
+			ipu_sdc_color_key c;
+			if (copy_from_user
+			    (&c, (ipu_sdc_color_key *) arg,
+			     sizeof(ipu_sdc_color_key))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_sdc_set_color_key(c.channel, c.enable,
+						  c.colorKey);
+		}
+		break;
+	case IPU_SDC_SET_BRIGHTNESS:
+		{
+			uint8_t b;
+			int __user *argp = (void __user *)arg;
+			if (get_user(b, argp))
+				return -EFAULT;
+			ret = ipu_sdc_set_brightness(b);
+
+		}
+		break;
+	case IPU_REGISTER_GENERIC_ISR:
+		{
+			ipu_event_info info;
+			if (copy_from_user
+			    (&info, (ipu_event_info *) arg,
+			     sizeof(ipu_event_info))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_request_irq(info.irq, mxc_ipu_generic_handler,
+					    0, "video_sink", info.dev);
+		}
+		break;
+	case IPU_GET_EVENT:
+		/* User will have to allocate event_type structure and pass the pointer in arg */
+		{
+			ipu_event_info info;
+			int r = -1;
+
+			if (copy_from_user
+					(&info, (ipu_event_info *) arg,
+					 sizeof(ipu_event_info)))
+				return -EFAULT;
+
+			r = get_events(&info);
+			if (r == -1) {
+				wait_event_interruptible_timeout(waitq,
+						(pending_events != 0), 2 * HZ);
+				r = get_events(&info);
+			}
+			ret = -1;
+			if (r == 0) {
+				if (!copy_to_user((ipu_event_info *) arg,
+					&info, sizeof(ipu_event_info)))
+					ret = 0;
+			}
+		}
+		break;
+	case IPU_ADC_WRITE_TEMPLATE:
+		{
+			ipu_adc_template temp;
+			if (copy_from_user
+			    (&temp, (ipu_adc_template *) arg, sizeof(temp))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_adc_write_template(temp.disp, temp.pCmd,
+						   temp.write);
+		}
+		break;
+	case IPU_ADC_UPDATE:
+		{
+			ipu_adc_update update;
+			if (copy_from_user
+			    (&update, (ipu_adc_update *) arg, sizeof(update))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_adc_set_update_mode(update.channel, update.mode,
+						    update.refresh_rate,
+						    update.addr, update.size);
+		}
+		break;
+	case IPU_ADC_SNOOP:
+		{
+			ipu_adc_snoop snoop;
+			if (copy_from_user
+			    (&snoop, (ipu_adc_snoop *) arg, sizeof(snoop))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_adc_get_snooping_status(snoop.statl,
+							snoop.stath);
+		}
+		break;
+	case IPU_ADC_CMD:
+		{
+			ipu_adc_cmd cmd;
+			if (copy_from_user
+			    (&cmd, (ipu_adc_cmd *) arg, sizeof(cmd))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_adc_write_cmd(cmd.disp, cmd.type, cmd.cmd,
+					      cmd.params, cmd.numParams);
+		}
+		break;
+	case IPU_ADC_INIT_PANEL:
+		{
+			ipu_adc_panel panel;
+			if (copy_from_user
+			    (&panel, (ipu_adc_panel *) arg, sizeof(panel))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_adc_init_panel(panel.disp, panel.width,
+					       panel.height, panel.pixel_fmt,
+					       panel.stride, panel.signal,
+					       panel.addr, panel.vsync_width,
+					       panel.mode);
+		}
+		break;
+	case IPU_ADC_IFC_TIMING:
+		{
+			ipu_adc_ifc_timing t;
+			if (copy_from_user
+			    (&t, (ipu_adc_ifc_timing *) arg, sizeof(t))) {
+				return -EFAULT;
+			}
+			ret =
+			    ipu_adc_init_ifc_timing(t.disp, t.read,
+						    t.cycle_time, t.up_time,
+						    t.down_time,
+						    t.read_latch_time,
+						    t.pixel_clk);
+		}
+		break;
+	case IPU_CSI_INIT_INTERFACE:
+		{
+			ipu_csi_interface c;
+			if (copy_from_user
+			    (&c, (ipu_csi_interface *) arg, sizeof(c)))
+				return -EFAULT;
+			ret =
+			    ipu_csi_init_interface(c.width, c.height,
+						   c.pixel_fmt, c.signal);
+		}
+		break;
+	case IPU_CSI_ENABLE_MCLK:
+		{
+			ipu_csi_mclk m;
+			if (copy_from_user(&m, (ipu_csi_mclk *) arg, sizeof(m)))
+				return -EFAULT;
+			ret = ipu_csi_enable_mclk(m.src, m.flag, m.wait);
+		}
+		break;
+	case IPU_CSI_READ_MCLK_FLAG:
+		{
+			ret = ipu_csi_read_mclk_flag();
+		}
+		break;
+	case IPU_CSI_FLASH_STROBE:
+		{
+			bool strobe;
+			int __user *argp = (void __user *)arg;
+			if (get_user(strobe, argp))
+				return -EFAULT;
+			ipu_csi_flash_strobe(strobe);
+		}
+		break;
+	case IPU_CSI_GET_WIN_SIZE:
+		{
+			ipu_csi_window_size w;
+			int dummy = 0;
+			ipu_csi_get_window_size(&w.width, &w.height, dummy);
+			if (copy_to_user
+			    ((ipu_csi_window_size *) arg, &w, sizeof(w)))
+				return -EFAULT;
+		}
+		break;
+	case IPU_CSI_SET_WIN_SIZE:
+		{
+			ipu_csi_window_size w;
+			int dummy = 0;
+			if (copy_from_user
+			    (&w, (ipu_csi_window_size *) arg, sizeof(w)))
+				return -EFAULT;
+			ipu_csi_set_window_size(w.width, w.height, dummy);
+		}
+		break;
+	case IPU_CSI_SET_WINDOW:
+		{
+			ipu_csi_window p;
+			int dummy = 0;
+			if (copy_from_user
+			    (&p, (ipu_csi_window *) arg, sizeof(p)))
+				return -EFAULT;
+			ipu_csi_set_window_pos(p.left, p.top, dummy);
+		}
+		break;
+	case IPU_PF_SET_PAUSE_ROW:
+		{
+			uint32_t p;
+			int __user *argp = (void __user *)arg;
+			if (get_user(p, argp))
+				return -EFAULT;
+			ret = ipu_pf_set_pause_row(p);
+		}
+		break;
+	case IPU_ALOC_MEM:
+		{
+			ipu_mem_info info;
+			if (copy_from_user
+					(&info, (ipu_mem_info *) arg,
+					 sizeof(ipu_mem_info)))
+				return -EFAULT;
+
+			info.vaddr = dma_alloc_coherent(0,
+					PAGE_ALIGN(info.size),
+					&info.paddr,
+					GFP_DMA | GFP_KERNEL);
+			if (info.vaddr == 0) {
+				printk(KERN_ERR "dma alloc failed!\n");
+				return -ENOBUFS;
+			}
+			if (copy_to_user((ipu_mem_info *) arg, &info,
+					sizeof(ipu_mem_info)) > 0)
+				return -EFAULT;
+		}
+		break;
+	case IPU_FREE_MEM:
+		{
+			ipu_mem_info info;
+			if (copy_from_user
+					(&info, (ipu_mem_info *) arg,
+					 sizeof(ipu_mem_info)))
+				return -EFAULT;
+
+			if (info.vaddr != 0)
+				dma_free_coherent(0, PAGE_ALIGN(info.size),
+						info.vaddr, info.paddr);
+			else
+				return -EFAULT;
+		}
+		break;
+	case IPU_IS_CHAN_BUSY:
+		{
+			ipu_channel_t chan;
+			if (copy_from_user
+					(&chan, (ipu_channel_t *)arg,
+					 sizeof(ipu_channel_t)))
+				return -EFAULT;
+
+			if (ipu_is_channel_busy(chan))
+				ret = 1;
+			else
+				ret = 0;
+		}
+		break;
+	default:
+		break;
+
+	}
+	return ret;
+}
+
+static int mxc_ipu_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	vma->vm_page_prot = pgprot_writethru(vma->vm_page_prot);
+
+	if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+				vma->vm_end - vma->vm_start,
+				vma->vm_page_prot)) {
+		printk(KERN_ERR
+				"mmap failed!\n");
+		return -ENOBUFS;
+	}
+	return 0;
+}
+
+static int mxc_ipu_release(struct inode *inode, struct file *file)
+{
+	return 0;
+}
+
+static struct file_operations mxc_ipu_fops = {
+	.owner = THIS_MODULE,
+	.open = mxc_ipu_open,
+	.mmap = mxc_ipu_mmap,
+	.release = mxc_ipu_release,
+	.ioctl = mxc_ipu_ioctl
+};
+
+int register_ipu_device()
+{
+	int ret = 0;
+	struct device *temp;
+	mxc_ipu_major = register_chrdev(0, "mxc_ipu", &mxc_ipu_fops);
+	if (mxc_ipu_major < 0) {
+		printk(KERN_ERR
+		       "Unable to register Mxc Ipu as a char device\n");
+		return mxc_ipu_major;
+	}
+
+	mxc_ipu_class = class_create(THIS_MODULE, "mxc_ipu");
+	if (IS_ERR(mxc_ipu_class)) {
+		printk(KERN_ERR "Unable to create class for Mxc Ipu\n");
+		ret = PTR_ERR(mxc_ipu_class);
+		goto err1;
+	}
+
+	temp = device_create(mxc_ipu_class, NULL, MKDEV(mxc_ipu_major, 0), NULL,
+			     "mxc_ipu");
+
+	if (IS_ERR(temp)) {
+		printk(KERN_ERR "Unable to create class device for Mxc Ipu\n");
+		ret = PTR_ERR(temp);
+		goto err2;
+	}
+	spin_lock_init(&queue_lock);
+	init_waitqueue_head(&waitq);
+	return ret;
+
+      err2:
+	class_destroy(mxc_ipu_class);
+      err1:
+	unregister_chrdev(mxc_ipu_major, "mxc_ipu");
+	return ret;
+
+}