The MERAM operations meram_register, meram_unregister and meram_update handle LCDC cache. In preparation for "raw" MERAM allocation, rename them to more appropriate names.
Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/video/sh_mobile_lcdcfb.c | 32 +++---- drivers/video/sh_mobile_lcdcfb.h | 2 +- drivers/video/sh_mobile_meram.c | 176 ++++++++++++++++++------------------- include/video/sh_mobile_meram.h | 21 ++--- 4 files changed, 110 insertions(+), 121 deletions(-)
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index e672698..5d12697 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -839,7 +839,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) /* Compute frame buffer base address and pitch for each channel. */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { int pixelformat; - void *meram; + void *cache;
ch = &priv->ch[k]; if (!ch->enabled) @@ -854,12 +854,10 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) ch->cfg->meram_cfg == NULL) continue;
- /* we need to de-init configured ICBs before we can - * re-initialize them. - */ - if (ch->meram) { - mdev->ops->meram_unregister(mdev, ch->meram); - ch->meram = NULL; + /* Free the allocated MERAM cache. */ + if (ch->cache) { + mdev->ops->cache_free(mdev, ch->cache); + ch->cache = NULL; }
switch (ch->format->fourcc) { @@ -881,14 +879,14 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) break; }
- meram = mdev->ops->meram_register(mdev, ch->cfg->meram_cfg, + cache = mdev->ops->cache_alloc(mdev, ch->cfg->meram_cfg, ch->pitch, ch->yres, pixelformat, &ch->line_size); - if (!IS_ERR(meram)) { - mdev->ops->meram_update(mdev, meram, + if (!IS_ERR(cache)) { + mdev->ops->cache_update(mdev, cache, ch->base_addr_y, ch->base_addr_c, &ch->base_addr_y, &ch->base_addr_c); - ch->meram = meram; + ch->cache = cache; } }
@@ -953,12 +951,12 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
sh_mobile_lcdc_display_off(ch);
- /* disable the meram */ - if (ch->meram) { + /* Free the MERAM cache. */ + if (ch->cache) { struct sh_mobile_meram_info *mdev; mdev = priv->meram_dev; - mdev->ops->meram_unregister(mdev, ch->meram); - ch->meram = 0; + mdev->ops->cache_free(mdev, ch->cache); + ch->cache = 0; }
} @@ -1071,11 +1069,11 @@ static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, base_addr_c += var->xoffset; }
- if (ch->meram) { + if (ch->cache) { struct sh_mobile_meram_info *mdev;
mdev = priv->meram_dev; - mdev->ops->meram_update(mdev, ch->meram, + mdev->ops->cache_update(mdev, ch->cache, base_addr_y, base_addr_c, &base_addr_y, &base_addr_c); } diff --git a/drivers/video/sh_mobile_lcdcfb.h b/drivers/video/sh_mobile_lcdcfb.h index 5c3bddd..e53cd11 100644 --- a/drivers/video/sh_mobile_lcdcfb.h +++ b/drivers/video/sh_mobile_lcdcfb.h @@ -59,7 +59,7 @@ struct sh_mobile_lcdc_chan { unsigned long *reg_offs; unsigned long ldmt1r_value; unsigned long enabled; /* ME and SE in LDCNT2R */ - void *meram; + void *cache;
struct mutex open_lock; /* protects the use counter */ int use_count; diff --git a/drivers/video/sh_mobile_meram.c b/drivers/video/sh_mobile_meram.c index 82ba830..4aa3fcb 100644 --- a/drivers/video/sh_mobile_meram.c +++ b/drivers/video/sh_mobile_meram.c @@ -194,13 +194,13 @@ static inline unsigned long meram_read_reg(void __iomem *base, unsigned int off) }
/* ----------------------------------------------------------------------------- - * Allocation + * LCDC cache planes allocation, init, cleanup and free */
/* Allocate ICBs and MERAM for a plane. */ -static int __meram_alloc(struct sh_mobile_meram_priv *priv, - struct sh_mobile_meram_fb_plane *plane, - size_t size) +static int meram_plane_alloc(struct sh_mobile_meram_priv *priv, + struct sh_mobile_meram_fb_plane *plane, + size_t size) { unsigned long mem; unsigned long idx; @@ -229,8 +229,8 @@ static int __meram_alloc(struct sh_mobile_meram_priv *priv, }
/* Free ICBs and MERAM for a plane. */ -static void __meram_free(struct sh_mobile_meram_priv *priv, - struct sh_mobile_meram_fb_plane *plane) +static void meram_plane_free(struct sh_mobile_meram_priv *priv, + struct sh_mobile_meram_fb_plane *plane) { gen_pool_free(priv->pool, priv->meram + plane->marker->offset, plane->marker->size * 1024); @@ -248,62 +248,6 @@ static int is_nvcolor(int cspace) return 0; }
-/* Allocate memory for the ICBs and mark them as used. */ -static struct sh_mobile_meram_fb_cache * -meram_alloc(struct sh_mobile_meram_priv *priv, - const struct sh_mobile_meram_cfg *cfg, - int pixelformat) -{ - struct sh_mobile_meram_fb_cache *cache; - unsigned int nplanes = is_nvcolor(pixelformat) ? 2 : 1; - int ret; - - if (cfg->icb[0].meram_size == 0) - return ERR_PTR(-EINVAL); - - if (nplanes == 2 && cfg->icb[1].meram_size == 0) - return ERR_PTR(-EINVAL); - - cache = kzalloc(sizeof(*cache), GFP_KERNEL); - if (cache == NULL) - return ERR_PTR(-ENOMEM); - - cache->nplanes = nplanes; - - ret = __meram_alloc(priv, &cache->planes[0], cfg->icb[0].meram_size); - if (ret < 0) - goto error; - - cache->planes[0].marker->current_reg = 1; - cache->planes[0].marker->pixelformat = pixelformat; - - if (cache->nplanes == 1) - return cache; - - ret = __meram_alloc(priv, &cache->planes[1], cfg->icb[1].meram_size); - if (ret < 0) { - __meram_free(priv, &cache->planes[0]); - goto error; - } - - return cache; - -error: - kfree(cache); - return ERR_PTR(-ENOMEM); -} - -/* Unmark the specified ICB as used. */ -static void meram_free(struct sh_mobile_meram_priv *priv, - struct sh_mobile_meram_fb_cache *cache) -{ - __meram_free(priv, &cache->planes[0]); - if (cache->nplanes == 2) - __meram_free(priv, &cache->planes[1]); - - kfree(cache); -} - /* Set the next address to fetch. */ static void meram_set_next_addr(struct sh_mobile_meram_priv *priv, struct sh_mobile_meram_fb_cache *cache, @@ -355,10 +299,10 @@ meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata, (((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1))
/* Initialize MERAM. */ -static int meram_init(struct sh_mobile_meram_priv *priv, - struct sh_mobile_meram_fb_plane *plane, - unsigned int xres, unsigned int yres, - unsigned int *out_pitch) +static int meram_plane_init(struct sh_mobile_meram_priv *priv, + struct sh_mobile_meram_fb_plane *plane, + unsigned int xres, unsigned int yres, + unsigned int *out_pitch) { struct sh_mobile_meram_icb *marker = plane->marker; unsigned long total_byte_count = MERAM_CALC_BYTECOUNT(xres, yres); @@ -427,8 +371,8 @@ static int meram_init(struct sh_mobile_meram_priv *priv, return 0; }
-static void meram_deinit(struct sh_mobile_meram_priv *priv, - struct sh_mobile_meram_fb_plane *plane) +static void meram_plane_cleanup(struct sh_mobile_meram_priv *priv, + struct sh_mobile_meram_fb_plane *plane) { /* disable ICB */ meram_write_icb(priv->base, plane->cache->index, MExxCTL, @@ -441,18 +385,60 @@ static void meram_deinit(struct sh_mobile_meram_priv *priv, }
/* ----------------------------------------------------------------------------- - * Registration/unregistration + * LCDC cache operations */
-static void *sh_mobile_meram_register(struct sh_mobile_meram_info *pdata, - const struct sh_mobile_meram_cfg *cfg, - unsigned int xres, unsigned int yres, - unsigned int pixelformat, - unsigned int *pitch) +/* Allocate memory for the ICBs and mark them as used. */ +static struct sh_mobile_meram_fb_cache * +meram_cache_alloc(struct sh_mobile_meram_priv *priv, + const struct sh_mobile_meram_cfg *cfg, + int pixelformat) +{ + unsigned int nplanes = is_nvcolor(pixelformat) ? 2 : 1; + struct sh_mobile_meram_fb_cache *cache; + int ret; + + cache = kzalloc(sizeof(*cache), GFP_KERNEL); + if (cache == NULL) + return ERR_PTR(-ENOMEM); + + cache->nplanes = nplanes; + + ret = meram_plane_alloc(priv, &cache->planes[0], + cfg->icb[0].meram_size); + if (ret < 0) + goto error; + + cache->planes[0].marker->current_reg = 1; + cache->planes[0].marker->pixelformat = pixelformat; + + if (cache->nplanes == 1) + return cache; + + ret = meram_plane_alloc(priv, &cache->planes[1], + cfg->icb[1].meram_size); + if (ret < 0) { + meram_plane_free(priv, &cache->planes[0]); + goto error; + } + + return cache; + +error: + kfree(cache); + return ERR_PTR(-ENOMEM); +} + +static void *sh_mobile_cache_alloc(struct sh_mobile_meram_info *pdata, + const struct sh_mobile_meram_cfg *cfg, + unsigned int xres, unsigned int yres, + unsigned int pixelformat, + unsigned int *pitch) { struct sh_mobile_meram_fb_cache *cache; struct sh_mobile_meram_priv *priv = pdata->priv; struct platform_device *pdev = pdata->pdev; + unsigned int nplanes = is_nvcolor(pixelformat) ? 2 : 1; unsigned int out_pitch;
if (pixelformat != SH_MOBILE_MERAM_PF_NV && @@ -469,10 +455,16 @@ static void *sh_mobile_meram_register(struct sh_mobile_meram_info *pdata, return ERR_PTR(-EINVAL); }
+ if (cfg->icb[0].meram_size == 0) + return ERR_PTR(-EINVAL); + + if (nplanes == 2 && cfg->icb[1].meram_size == 0) + return ERR_PTR(-EINVAL); + mutex_lock(&priv->lock);
/* We now register the ICBs and allocate the MERAM regions. */ - cache = meram_alloc(priv, cfg, pixelformat); + cache = meram_cache_alloc(priv, cfg, pixelformat); if (IS_ERR(cache)) { dev_err(&pdev->dev, "MERAM allocation failed (%ld).", PTR_ERR(cache)); @@ -480,14 +472,14 @@ static void *sh_mobile_meram_register(struct sh_mobile_meram_info *pdata, }
/* initialize MERAM */ - meram_init(priv, &cache->planes[0], xres, yres, &out_pitch); + meram_plane_init(priv, &cache->planes[0], xres, yres, &out_pitch); *pitch = out_pitch; if (pixelformat == SH_MOBILE_MERAM_PF_NV) - meram_init(priv, &cache->planes[1], xres, (yres + 1) / 2, - &out_pitch); + meram_plane_init(priv, &cache->planes[1], + xres, (yres + 1) / 2, &out_pitch); else if (pixelformat == SH_MOBILE_MERAM_PF_NV24) - meram_init(priv, &cache->planes[1], 2 * xres, (yres + 1) / 2, - &out_pitch); + meram_plane_init(priv, &cache->planes[1], + 2 * xres, (yres + 1) / 2, &out_pitch);
err: mutex_unlock(&priv->lock); @@ -495,25 +487,29 @@ err: }
static void -sh_mobile_meram_unregister(struct sh_mobile_meram_info *pdata, void *data) +sh_mobile_cache_free(struct sh_mobile_meram_info *pdata, void *data) { struct sh_mobile_meram_fb_cache *cache = data; struct sh_mobile_meram_priv *priv = pdata->priv;
mutex_lock(&priv->lock);
- /* deinit & free */ - meram_deinit(priv, &cache->planes[0]); - if (cache->nplanes == 2) - meram_deinit(priv, &cache->planes[1]); + /* Cleanup and free. */ + meram_plane_cleanup(priv, &cache->planes[0]); + meram_plane_free(priv, &cache->planes[0]);
- meram_free(priv, cache); + if (cache->nplanes == 2) { + meram_plane_cleanup(priv, &cache->planes[1]); + meram_plane_free(priv, &cache->planes[1]); + } + + kfree(cache);
mutex_unlock(&priv->lock); }
static void -sh_mobile_meram_update(struct sh_mobile_meram_info *pdata, void *data, +sh_mobile_cache_update(struct sh_mobile_meram_info *pdata, void *data, unsigned long base_addr_y, unsigned long base_addr_c, unsigned long *icb_addr_y, unsigned long *icb_addr_c) { @@ -530,9 +526,9 @@ sh_mobile_meram_update(struct sh_mobile_meram_info *pdata, void *data,
static struct sh_mobile_meram_ops sh_mobile_meram_ops = { .module = THIS_MODULE, - .meram_register = sh_mobile_meram_register, - .meram_unregister = sh_mobile_meram_unregister, - .meram_update = sh_mobile_meram_update, + .cache_alloc = sh_mobile_cache_alloc, + .cache_free = sh_mobile_cache_free, + .cache_update = sh_mobile_cache_update, };
/* ----------------------------------------------------------------------------- diff --git a/include/video/sh_mobile_meram.h b/include/video/sh_mobile_meram.h index 29b2fd3..8a5afaf 100644 --- a/include/video/sh_mobile_meram.h +++ b/include/video/sh_mobile_meram.h @@ -41,19 +41,14 @@ struct sh_mobile_meram_cfg { struct module; struct sh_mobile_meram_ops { struct module *module; - /* register usage of meram */ - void *(*meram_register)(struct sh_mobile_meram_info *meram_dev, - const struct sh_mobile_meram_cfg *cfg, - unsigned int xres, unsigned int yres, - unsigned int pixelformat, - unsigned int *pitch); - - /* unregister usage of meram */ - void (*meram_unregister)(struct sh_mobile_meram_info *meram_dev, - void *data); - - /* update meram settings */ - void (*meram_update)(struct sh_mobile_meram_info *meram_dev, void *data, + + /* LCDC cache management */ + void *(*cache_alloc)(struct sh_mobile_meram_info *meram_dev, + const struct sh_mobile_meram_cfg *cfg, + unsigned int xres, unsigned int yres, + unsigned int pixelformat, unsigned int *pitch); + void (*cache_free)(struct sh_mobile_meram_info *meram_dev, void *data); + void (*cache_update)(struct sh_mobile_meram_info *meram_dev, void *data, unsigned long base_addr_y, unsigned long base_addr_c, unsigned long *icb_addr_y,