From patchwork Thu Jul 19 00:39:14 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 1213491 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 43BF240071 for ; Thu, 19 Jul 2012 00:39:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751592Ab2GSAjY (ORCPT ); Wed, 18 Jul 2012 20:39:24 -0400 Received: from perceval.ideasonboard.com ([95.142.166.194]:52315 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751745Ab2GSAjW (ORCPT ); Wed, 18 Jul 2012 20:39:22 -0400 Received: from avalon.ideasonboard.com (unknown [91.178.56.248]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 947F335A86; Thu, 19 Jul 2012 02:39:20 +0200 (CEST) From: Laurent Pinchart To: linux-fbdev@vger.kernel.org Cc: linux-sh@vger.kernel.org Subject: [PATCH 1/9] sh_mobile_meram: Rename operations to cache_[alloc|free|update] Date: Thu, 19 Jul 2012 02:39:14 +0200 Message-Id: <1342658362-19491-2-git-send-email-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 1.7.8.6 In-Reply-To: <1342658362-19491-1-git-send-email-laurent.pinchart@ideasonboard.com> References: <1342658362-19491-1-git-send-email-laurent.pinchart@ideasonboard.com> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org 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 --- 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 98e81b3..e593e81 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -1104,7 +1104,7 @@ 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) @@ -1119,12 +1119,10 @@ 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) { @@ -1146,14 +1144,14 @@ 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; } } @@ -1223,12 +1221,12 @@ 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; } } @@ -1839,11 +1837,11 @@ static int sh_mobile_lcdc_pan(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,