1 files changed, 538 insertions, 0 deletions

diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c
new file mode 100644
index 000000000000..99636a2b20f2
--- /dev/null
+++ b/drivers/video/msm/mdp.c
@@ -0,0 +1,538 @@
+/* drivers/video/msm_fb/mdp.c
+ *
+ * MSM MDP Interface (used by framebuffer core)
+ *
+ * Copyright (C) 2007 QUALCOMM Incorporated
+ * 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/kernel.h>
+#include <linux/fb.h>
+#include <linux/msm_mdp.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <linux/clk.h>
+#include <linux/file.h>
+#ifdef CONFIG_ANDROID_PMEM
+#include <linux/android_pmem.h>
+#endif
+#include <linux/major.h>
+
+#include <mach/msm_iomap.h>
+#include <mach/msm_fb.h>
+#include <linux/platform_device.h>
+
+#include "mdp_hw.h"
+
+struct class *mdp_class;
+
+#define MDP_CMD_DEBUG_ACCESS_BASE (0x10000)
+
+static uint16_t mdp_default_ccs[] = {
+        0x254, 0x000, 0x331, 0x254, 0xF38, 0xE61, 0x254, 0x409, 0x000,
+        0x010, 0x080, 0x080
+};
+
+static DECLARE_WAIT_QUEUE_HEAD(mdp_dma2_waitqueue);
+static DECLARE_WAIT_QUEUE_HEAD(mdp_ppp_waitqueue);
+static struct msmfb_callback *dma_callback;
+static struct clk *clk;
+static unsigned int mdp_irq_mask;
+static DEFINE_SPINLOCK(mdp_lock);
+DEFINE_MUTEX(mdp_mutex);
+
+static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
+{
+        unsigned long irq_flags;
+        int ret = 0;
+
+        BUG_ON(!mask);
+
+        spin_lock_irqsave(&mdp_lock, irq_flags);
+        /* if the mask bits are already set return an error, this interrupt
+         * is already enabled */
+        if (mdp_irq_mask & mask) {
+                printk(KERN_ERR "mdp irq already on already on %x %x\n",
+                       mdp_irq_mask, mask);
+                ret = -1;
+        }
+        /* if the mdp irq is not already enabled enable it */
+        if (!mdp_irq_mask) {
+                if (clk)
+                        clk_enable(clk);
+                enable_irq(mdp->irq);
+        }
+
+        /* update the irq mask to reflect the fact that the interrupt is
+         * enabled */
+        mdp_irq_mask |= mask;
+        spin_unlock_irqrestore(&mdp_lock, irq_flags);
+        return ret;
+}
+
+static int locked_disable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
+{
+        /* this interrupt is already disabled! */
+        if (!(mdp_irq_mask & mask)) {
+                printk(KERN_ERR "mdp irq already off %x %x\n",
+                       mdp_irq_mask, mask);
+                return -1;
+        }
+        /* update the irq mask to reflect the fact that the interrupt is
+         * disabled */
+        mdp_irq_mask &= ~(mask);
+        /* if no one is waiting on the interrupt, disable it */
+        if (!mdp_irq_mask) {
+                disable_irq(mdp->irq);
+                if (clk)
+                        clk_disable(clk);
+        }
+        return 0;
+}
+
+static int disable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
+{
+        unsigned long irq_flags;
+        int ret;
+
+        spin_lock_irqsave(&mdp_lock, irq_flags);
+        ret = locked_disable_mdp_irq(mdp, mask);
+        spin_unlock_irqrestore(&mdp_lock, irq_flags);
+        return ret;
+}
+
+static irqreturn_t mdp_isr(int irq, void *data)
+{
+        uint32_t status;
+        unsigned long irq_flags;
+        struct mdp_info *mdp = data;
+
+        spin_lock_irqsave(&mdp_lock, irq_flags);
+
+        status = mdp_readl(mdp, MDP_INTR_STATUS);
+        mdp_writel(mdp, status, MDP_INTR_CLEAR);
+
+        status &= mdp_irq_mask;
+        if (status & DL0_DMA2_TERM_DONE) {
+                if (dma_callback) {
+                        dma_callback->func(dma_callback);
+                        dma_callback = NULL;
+                }
+                wake_up(&mdp_dma2_waitqueue);
+        }
+
+        if (status & DL0_ROI_DONE)
+                wake_up(&mdp_ppp_waitqueue);
+
+        if (status)
+                locked_disable_mdp_irq(mdp, status);
+
+        spin_unlock_irqrestore(&mdp_lock, irq_flags);
+        return IRQ_HANDLED;
+}
+
+static uint32_t mdp_check_mask(uint32_t mask)
+{
+        uint32_t ret;
+        unsigned long irq_flags;
+
+        spin_lock_irqsave(&mdp_lock, irq_flags);
+        ret = mdp_irq_mask & mask;
+        spin_unlock_irqrestore(&mdp_lock, irq_flags);
+        return ret;
+}
+
+static int mdp_wait(struct mdp_info *mdp, uint32_t mask, wait_queue_head_t *wq)
+{
+        int ret = 0;
+        unsigned long irq_flags;
+
+        wait_event_timeout(*wq, !mdp_check_mask(mask), HZ);
+
+        spin_lock_irqsave(&mdp_lock, irq_flags);
+        if (mdp_irq_mask & mask) {
+                locked_disable_mdp_irq(mdp, mask);
+                printk(KERN_WARNING "timeout waiting for mdp to complete %x\n",
+                       mask);
+                ret = -ETIMEDOUT;
+        }
+        spin_unlock_irqrestore(&mdp_lock, irq_flags);
+
+        return ret;
+}
+
+void mdp_dma_wait(struct mdp_device *mdp_dev)
+{
+#define MDP_MAX_TIMEOUTS 20
+        static int timeout_count;
+        struct mdp_info *mdp = container_of(mdp_dev, struct mdp_info, mdp_dev);
+
+        if (mdp_wait(mdp, DL0_DMA2_TERM_DONE, &mdp_dma2_waitqueue) == -ETIMEDOUT)
+                timeout_count++;
+        else
+                timeout_count = 0;
+
+        if (timeout_count > MDP_MAX_TIMEOUTS) {
+                printk(KERN_ERR "mdp: dma failed %d times, somethings wrong!\n",
+                       MDP_MAX_TIMEOUTS);
+                BUG();
+        }
+}
+
+static int mdp_ppp_wait(struct mdp_info *mdp)
+{
+        return mdp_wait(mdp, DL0_ROI_DONE, &mdp_ppp_waitqueue);
+}
+
+void mdp_dma_to_mddi(struct mdp_info *mdp, uint32_t addr, uint32_t stride,
+                     uint32_t width, uint32_t height, uint32_t x, uint32_t y,
+                     struct msmfb_callback *callback)
+{
+        uint32_t dma2_cfg;
+        uint16_t ld_param = 0; /* 0=PRIM, 1=SECD, 2=EXT */
+
+        if (enable_mdp_irq(mdp, DL0_DMA2_TERM_DONE)) {
+                printk(KERN_ERR "mdp_dma_to_mddi: busy\n");
+                return;
+        }
+
+        dma_callback = callback;
+
+        dma2_cfg = DMA_PACK_TIGHT |
+                DMA_PACK_ALIGN_LSB |
+                DMA_PACK_PATTERN_RGB |
+                DMA_OUT_SEL_AHB |
+                DMA_IBUF_NONCONTIGUOUS;
+
+        dma2_cfg |= DMA_IBUF_FORMAT_RGB565;
+
+        dma2_cfg |= DMA_OUT_SEL_MDDI;
+
+        dma2_cfg |= DMA_MDDI_DMAOUT_LCD_SEL_PRIMARY;
+
+        dma2_cfg |= DMA_DITHER_EN;
+
+        /* setup size, address, and stride */
+        mdp_writel(mdp, (height << 16) | (width),
+                   MDP_CMD_DEBUG_ACCESS_BASE + 0x0184);
+        mdp_writel(mdp, addr, MDP_CMD_DEBUG_ACCESS_BASE + 0x0188);
+        mdp_writel(mdp, stride, MDP_CMD_DEBUG_ACCESS_BASE + 0x018C);
+
+        /* 666 18BPP */
+        dma2_cfg |= DMA_DSTC0G_6BITS | DMA_DSTC1B_6BITS | DMA_DSTC2R_6BITS;
+
+        /* set y & x offset and MDDI transaction parameters */
+        mdp_writel(mdp, (y << 16) | (x), MDP_CMD_DEBUG_ACCESS_BASE + 0x0194);
+        mdp_writel(mdp, ld_param, MDP_CMD_DEBUG_ACCESS_BASE + 0x01a0);
+        mdp_writel(mdp, (MDDI_VDO_PACKET_DESC << 16) | MDDI_VDO_PACKET_PRIM,
+                   MDP_CMD_DEBUG_ACCESS_BASE + 0x01a4);
+
+        mdp_writel(mdp, dma2_cfg, MDP_CMD_DEBUG_ACCESS_BASE + 0x0180);
+
+        /* start DMA2 */
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0044);
+}
+
+void mdp_dma(struct mdp_device *mdp_dev, uint32_t addr, uint32_t stride,
+             uint32_t width, uint32_t height, uint32_t x, uint32_t y,
+             struct msmfb_callback *callback, int interface)
+{
+        struct mdp_info *mdp = container_of(mdp_dev, struct mdp_info, mdp_dev);
+
+        if (interface == MSM_MDDI_PMDH_INTERFACE) {
+                mdp_dma_to_mddi(mdp, addr, stride, width, height, x, y,
+                                callback);
+        }
+}
+
+int get_img(struct mdp_img *img, struct fb_info *info,
+            unsigned long *start, unsigned long *len,
+            struct file **filep)
+{
+        int put_needed, ret = 0;
+        struct file *file;
+        unsigned long vstart;
+
+#ifdef CONFIG_ANDROID_PMEM
+        if (!get_pmem_file(img->memory_id, start, &vstart, len, filep))
+                return 0;
+#endif
+
+        file = fget_light(img->memory_id, &put_needed);
+        if (file == NULL)
+                return -1;
+
+        if (MAJOR(file->f_dentry->d_inode->i_rdev) == FB_MAJOR) {
+                *start = info->fix.smem_start;
+                *len = info->fix.smem_len;
+        } else
+                ret = -1;
+        fput_light(file, put_needed);
+
+        return ret;
+}
+
+void put_img(struct file *src_file, struct file *dst_file)
+{
+#ifdef CONFIG_ANDROID_PMEM
+        if (src_file)
+                put_pmem_file(src_file);
+        if (dst_file)
+                put_pmem_file(dst_file);
+#endif
+}
+
+int mdp_blit(struct mdp_device *mdp_dev, struct fb_info *fb,
+             struct mdp_blit_req *req)
+{
+        int ret;
+        unsigned long src_start = 0, src_len = 0, dst_start = 0, dst_len = 0;
+        struct mdp_info *mdp = container_of(mdp_dev, struct mdp_info, mdp_dev);
+        struct file *src_file = 0, *dst_file = 0;
+
+        /* WORKAROUND FOR HARDWARE BUG IN BG TILE FETCH */
+        if (unlikely(req->src_rect.h == 0 ||
+                     req->src_rect.w == 0)) {
+                printk(KERN_ERR "mpd_ppp: src img of zero size!\n");
+                return -EINVAL;
+        }
+        if (unlikely(req->dst_rect.h == 0 ||
+                     req->dst_rect.w == 0))
+                return -EINVAL;
+
+        /* do this first so that if this fails, the caller can always
+         * safely call put_img */
+        if (unlikely(get_img(&req->src, fb, &src_start, &src_len, &src_file))) {
+                printk(KERN_ERR "mpd_ppp: could not retrieve src image from "
+                                "memory\n");
+                return -EINVAL;
+        }
+
+        if (unlikely(get_img(&req->dst, fb, &dst_start, &dst_len, &dst_file))) {
+                printk(KERN_ERR "mpd_ppp: could not retrieve dst image from "
+                                "memory\n");
+#ifdef CONFIG_ANDROID_PMEM
+                put_pmem_file(src_file);
+#endif
+                return -EINVAL;
+        }
+        mutex_lock(&mdp_mutex);
+
+        /* transp_masking unimplemented */
+        req->transp_mask = MDP_TRANSP_NOP;
+        if (unlikely((req->transp_mask != MDP_TRANSP_NOP ||
+                      req->alpha != MDP_ALPHA_NOP ||
+                      HAS_ALPHA(req->src.format)) &&
+                     (req->flags & MDP_ROT_90 &&
+                      req->dst_rect.w <= 16 && req->dst_rect.h >= 16))) {
+                int i;
+                unsigned int tiles = req->dst_rect.h / 16;
+                unsigned int remainder = req->dst_rect.h % 16;
+                req->src_rect.w = 16*req->src_rect.w / req->dst_rect.h;
+                req->dst_rect.h = 16;
+                for (i = 0; i < tiles; i++) {
+                        enable_mdp_irq(mdp, DL0_ROI_DONE);
+                        ret = mdp_ppp_blit(mdp, req, src_file, src_start,
+                                           src_len, dst_file, dst_start,
+                                           dst_len);
+                        if (ret)
+                                goto err_bad_blit;
+                        ret = mdp_ppp_wait(mdp);
+                        if (ret)
+                                goto err_wait_failed;
+                        req->dst_rect.y += 16;
+                        req->src_rect.x += req->src_rect.w;
+                }
+                if (!remainder)
+                        goto end;
+                req->src_rect.w = remainder*req->src_rect.w / req->dst_rect.h;
+                req->dst_rect.h = remainder;
+        }
+        enable_mdp_irq(mdp, DL0_ROI_DONE);
+        ret = mdp_ppp_blit(mdp, req, src_file, src_start, src_len, dst_file,
+                           dst_start,
+                           dst_len);
+        if (ret)
+                goto err_bad_blit;
+        ret = mdp_ppp_wait(mdp);
+        if (ret)
+                goto err_wait_failed;
+end:
+        put_img(src_file, dst_file);
+        mutex_unlock(&mdp_mutex);
+        return 0;
+err_bad_blit:
+        disable_mdp_irq(mdp, DL0_ROI_DONE);
+err_wait_failed:
+        put_img(src_file, dst_file);
+        mutex_unlock(&mdp_mutex);
+        return ret;
+}
+
+void mdp_set_grp_disp(struct mdp_device *mdp_dev, unsigned disp_id)
+{
+        struct mdp_info *mdp = container_of(mdp_dev, struct mdp_info, mdp_dev);
+
+        disp_id &= 0xf;
+        mdp_writel(mdp, disp_id, MDP_FULL_BYPASS_WORD43);
+}
+
+int register_mdp_client(struct class_interface *cint)
+{
+        if (!mdp_class) {
+                pr_err("mdp: no mdp_class when registering mdp client\n");
+                return -ENODEV;
+        }
+        cint->class = mdp_class;
+        return class_interface_register(cint);
+}
+
+#include "mdp_csc_table.h"
+#include "mdp_scale_tables.h"
+
+int mdp_probe(struct platform_device *pdev)
+{
+        struct resource *resource;
+        int ret;
+        int n;
+        struct mdp_info *mdp;
+
+        resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!resource) {
+                pr_err("mdp: can not get mdp mem resource!\n");
+                return -ENOMEM;
+        }
+
+        mdp = kzalloc(sizeof(struct mdp_info), GFP_KERNEL);
+        if (!mdp)
+                return -ENOMEM;
+
+        mdp->irq = platform_get_irq(pdev, 0);
+        if (mdp->irq < 0) {
+                pr_err("mdp: can not get mdp irq\n");
+                ret = mdp->irq;
+                goto error_get_irq;
+        }
+
+        mdp->base = ioremap(resource->start,
+                            resource->end - resource->start);
+        if (mdp->base == 0) {
+                printk(KERN_ERR "msmfb: cannot allocate mdp regs!\n");
+                ret = -ENOMEM;
+                goto error_ioremap;
+        }
+
+        mdp->mdp_dev.dma = mdp_dma;
+        mdp->mdp_dev.dma_wait = mdp_dma_wait;
+        mdp->mdp_dev.blit = mdp_blit;
+        mdp->mdp_dev.set_grp_disp = mdp_set_grp_disp;
+
+        clk = clk_get(&pdev->dev, "mdp_clk");
+        if (IS_ERR(clk)) {
+                printk(KERN_INFO "mdp: failed to get mdp clk");
+                return PTR_ERR(clk);
+        }
+
+        ret = request_irq(mdp->irq, mdp_isr, IRQF_DISABLED, "msm_mdp", mdp);
+        if (ret)
+                goto error_request_irq;
+        disable_irq(mdp->irq);
+        mdp_irq_mask = 0;
+
+        /* debug interface write access */
+        mdp_writel(mdp, 1, 0x60);
+
+        mdp_writel(mdp, MDP_ANY_INTR_MASK, MDP_INTR_ENABLE);
+        mdp_writel(mdp, 1, MDP_EBI2_PORTMAP_MODE);
+
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01f8);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01fc);
+
+        for (n = 0; n < ARRAY_SIZE(csc_table); n++)
+                mdp_writel(mdp, csc_table[n].val, csc_table[n].reg);
+
+        /* clear up unused fg/main registers */
+        /* comp.plane 2&3 ystride */
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0120);
+
+        /* unpacked pattern */
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x012c);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0130);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0134);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0158);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x015c);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0160);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0170);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0174);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x017c);
+
+        /* comp.plane 2 & 3 */
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0114);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x0118);
+
+        /* clear unused bg registers */
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01c8);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01d0);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01dc);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01e0);
+        mdp_writel(mdp, 0, MDP_CMD_DEBUG_ACCESS_BASE + 0x01e4);
+
+        for (n = 0; n < ARRAY_SIZE(mdp_upscale_table); n++)
+                mdp_writel(mdp, mdp_upscale_table[n].val,
+                       mdp_upscale_table[n].reg);
+
+        for (n = 0; n < 9; n++)
+                mdp_writel(mdp, mdp_default_ccs[n], 0x40440 + 4 * n);
+        mdp_writel(mdp, mdp_default_ccs[9], 0x40500 + 4 * 0);
+        mdp_writel(mdp, mdp_default_ccs[10], 0x40500 + 4 * 0);
+        mdp_writel(mdp, mdp_default_ccs[11], 0x40500 + 4 * 0);
+
+        /* register mdp device */
+        mdp->mdp_dev.dev.parent = &pdev->dev;
+        mdp->mdp_dev.dev.class = mdp_class;
+        snprintf(mdp->mdp_dev.dev.bus_id, BUS_ID_SIZE, "mdp%d", pdev->id);
+
+        /* if you can remove the platform device you'd have to implement
+         * this:
+        mdp_dev.release = mdp_class; */
+
+        ret = device_register(&mdp->mdp_dev.dev);
+        if (ret)
+                goto error_device_register;
+        return 0;
+
+error_device_register:
+        free_irq(mdp->irq, mdp);
+error_request_irq:
+        iounmap(mdp->base);
+error_get_irq:
+error_ioremap:
+        kfree(mdp);
+        return ret;
+}
+
+static struct platform_driver msm_mdp_driver = {
+        .probe = mdp_probe,
+        .driver = {.name = "msm_mdp"},
+};
+
+static int __init mdp_init(void)
+{
+        mdp_class = class_create(THIS_MODULE, "msm_mdp");
+        if (IS_ERR(mdp_class)) {
+                printk(KERN_ERR "Error creating mdp class\n");
+                return PTR_ERR(mdp_class);
+        }
+        return platform_driver_register(&msm_mdp_driver);
+}
+
+subsys_initcall(mdp_init);