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path: root/drivers/video/sh_mobile_meram.c
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Diffstat (limited to 'drivers/video/sh_mobile_meram.c')
-rw-r--r--drivers/video/sh_mobile_meram.c690
1 files changed, 366 insertions, 324 deletions
diff --git a/drivers/video/sh_mobile_meram.c b/drivers/video/sh_mobile_meram.c
index f45d83ecfd2..82ba830bf95 100644
--- a/drivers/video/sh_mobile_meram.c
+++ b/drivers/video/sh_mobile_meram.c
@@ -9,16 +9,22 @@
* for more details.
*/
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/genalloc.h>
+#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
-#include <linux/io.h>
#include <linux/slab.h>
-#include <linux/platform_device.h>
+
#include <video/sh_mobile_meram.h>
-/* meram registers */
+/* -----------------------------------------------------------------------------
+ * MERAM registers
+ */
+
#define MEVCR1 0x4
#define MEVCR1_RST (1 << 31)
#define MEVCR1_WD (1 << 30)
@@ -81,16 +87,14 @@
((yszm1) << MExxBSIZE_YSZM1_SHIFT) | \
((xszm1) << MExxBSIZE_XSZM1_SHIFT))
-#define SH_MOBILE_MERAM_ICB_NUM 32
-
-static unsigned long common_regs[] = {
+static const unsigned long common_regs[] = {
MEVCR1,
MEQSEL1,
MEQSEL2,
};
-#define CMN_REGS_SIZE ARRAY_SIZE(common_regs)
+#define MERAM_REGS_SIZE ARRAY_SIZE(common_regs)
-static unsigned long icb_regs[] = {
+static const unsigned long icb_regs[] = {
MExxCTL,
MExxBSIZE,
MExxMNCF,
@@ -100,216 +104,269 @@ static unsigned long icb_regs[] = {
};
#define ICB_REGS_SIZE ARRAY_SIZE(icb_regs)
+/*
+ * sh_mobile_meram_icb - MERAM ICB information
+ * @regs: Registers cache
+ * @index: ICB index
+ * @offset: MERAM block offset
+ * @size: MERAM block size in KiB
+ * @cache_unit: Bytes to cache per ICB
+ * @pixelformat: Video pixel format of the data stored in the ICB
+ * @current_reg: Which of Start Address Register A (0) or B (1) is in use
+ */
+struct sh_mobile_meram_icb {
+ unsigned long regs[ICB_REGS_SIZE];
+ unsigned int index;
+ unsigned long offset;
+ unsigned int size;
+
+ unsigned int cache_unit;
+ unsigned int pixelformat;
+ unsigned int current_reg;
+};
+
+#define MERAM_ICB_NUM 32
+
+struct sh_mobile_meram_fb_plane {
+ struct sh_mobile_meram_icb *marker;
+ struct sh_mobile_meram_icb *cache;
+};
+
+struct sh_mobile_meram_fb_cache {
+ unsigned int nplanes;
+ struct sh_mobile_meram_fb_plane planes[2];
+};
+
+/*
+ * sh_mobile_meram_priv - MERAM device
+ * @base: Registers base address
+ * @meram: MERAM physical address
+ * @regs: Registers cache
+ * @lock: Protects used_icb and icbs
+ * @used_icb: Bitmask of used ICBs
+ * @icbs: ICBs
+ * @pool: Allocation pool to manage the MERAM
+ */
struct sh_mobile_meram_priv {
- void __iomem *base;
- struct mutex lock;
- unsigned long used_icb;
- int used_meram_cache_regions;
- unsigned long used_meram_cache[SH_MOBILE_MERAM_ICB_NUM];
- unsigned long cmn_saved_regs[CMN_REGS_SIZE];
- unsigned long icb_saved_regs[ICB_REGS_SIZE * SH_MOBILE_MERAM_ICB_NUM];
+ void __iomem *base;
+ unsigned long meram;
+ unsigned long regs[MERAM_REGS_SIZE];
+
+ struct mutex lock;
+ unsigned long used_icb;
+ struct sh_mobile_meram_icb icbs[MERAM_ICB_NUM];
+
+ struct gen_pool *pool;
};
/* settings */
-#define MERAM_SEC_LINE 15
-#define MERAM_LINE_WIDTH 2048
+#define MERAM_GRANULARITY 1024
+#define MERAM_SEC_LINE 15
+#define MERAM_LINE_WIDTH 2048
-/*
- * MERAM/ICB access functions
+/* -----------------------------------------------------------------------------
+ * Registers access
*/
#define MERAM_ICB_OFFSET(base, idx, off) ((base) + (off) + (idx) * 0x20)
-static inline void meram_write_icb(void __iomem *base, int idx, int off,
- unsigned long val)
+static inline void meram_write_icb(void __iomem *base, unsigned int idx,
+ unsigned int off, unsigned long val)
{
iowrite32(val, MERAM_ICB_OFFSET(base, idx, off));
}
-static inline unsigned long meram_read_icb(void __iomem *base, int idx, int off)
+static inline unsigned long meram_read_icb(void __iomem *base, unsigned int idx,
+ unsigned int off)
{
return ioread32(MERAM_ICB_OFFSET(base, idx, off));
}
-static inline void meram_write_reg(void __iomem *base, int off,
- unsigned long val)
+static inline void meram_write_reg(void __iomem *base, unsigned int off,
+ unsigned long val)
{
iowrite32(val, base + off);
}
-static inline unsigned long meram_read_reg(void __iomem *base, int off)
+static inline unsigned long meram_read_reg(void __iomem *base, unsigned int off)
{
return ioread32(base + off);
}
-/*
- * register ICB
- */
-
-#define MERAM_CACHE_START(p) ((p) >> 16)
-#define MERAM_CACHE_END(p) ((p) & 0xffff)
-#define MERAM_CACHE_SET(o, s) ((((o) & 0xffff) << 16) | \
- (((o) + (s) - 1) & 0xffff))
-
-/*
- * check if there's no overlaps in MERAM allocation.
+/* -----------------------------------------------------------------------------
+ * Allocation
*/
-static inline int meram_check_overlap(struct sh_mobile_meram_priv *priv,
- struct sh_mobile_meram_icb *new)
+/* 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)
{
- int i;
- int used_start, used_end, meram_start, meram_end;
+ unsigned long mem;
+ unsigned long idx;
- /* valid ICB? */
- if (new->marker_icb & ~0x1f || new->cache_icb & ~0x1f)
- return 1;
+ idx = find_first_zero_bit(&priv->used_icb, 28);
+ if (idx == 28)
+ return -ENOMEM;
+ plane->cache = &priv->icbs[idx];
- if (test_bit(new->marker_icb, &priv->used_icb) ||
- test_bit(new->cache_icb, &priv->used_icb))
- return 1;
+ idx = find_next_zero_bit(&priv->used_icb, 32, 28);
+ if (idx == 32)
+ return -ENOMEM;
+ plane->marker = &priv->icbs[idx];
- for (i = 0; i < priv->used_meram_cache_regions; i++) {
- used_start = MERAM_CACHE_START(priv->used_meram_cache[i]);
- used_end = MERAM_CACHE_END(priv->used_meram_cache[i]);
- meram_start = new->meram_offset;
- meram_end = new->meram_offset + new->meram_size;
+ mem = gen_pool_alloc(priv->pool, size * 1024);
+ if (mem == 0)
+ return -ENOMEM;
- if ((meram_start >= used_start && meram_start < used_end) ||
- (meram_end > used_start && meram_end < used_end))
- return 1;
- }
+ __set_bit(plane->marker->index, &priv->used_icb);
+ __set_bit(plane->cache->index, &priv->used_icb);
+
+ plane->marker->offset = mem - priv->meram;
+ plane->marker->size = size;
return 0;
}
-/*
- * mark the specified ICB as used
- */
+/* Free ICBs and MERAM for a plane. */
+static void __meram_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);
-static inline void meram_mark(struct sh_mobile_meram_priv *priv,
- struct sh_mobile_meram_icb *new)
+ __clear_bit(plane->marker->index, &priv->used_icb);
+ __clear_bit(plane->cache->index, &priv->used_icb);
+}
+
+/* Is this a YCbCr(NV12, NV16 or NV24) colorspace? */
+static int is_nvcolor(int cspace)
{
- int n;
+ if (cspace == SH_MOBILE_MERAM_PF_NV ||
+ cspace == SH_MOBILE_MERAM_PF_NV24)
+ return 1;
+ return 0;
+}
- if (new->marker_icb < 0 || new->cache_icb < 0)
- return;
+/* 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;
- __set_bit(new->marker_icb, &priv->used_icb);
- __set_bit(new->cache_icb, &priv->used_icb);
+ if (cfg->icb[0].meram_size == 0)
+ return ERR_PTR(-EINVAL);
- n = priv->used_meram_cache_regions;
+ if (nplanes == 2 && cfg->icb[1].meram_size == 0)
+ return ERR_PTR(-EINVAL);
- priv->used_meram_cache[n] = MERAM_CACHE_SET(new->meram_offset,
- new->meram_size);
+ cache = kzalloc(sizeof(*cache), GFP_KERNEL);
+ if (cache == NULL)
+ return ERR_PTR(-ENOMEM);
- priv->used_meram_cache_regions++;
-}
+ cache->nplanes = nplanes;
-/*
- * unmark the specified ICB as used
- */
+ ret = __meram_alloc(priv, &cache->planes[0], cfg->icb[0].meram_size);
+ if (ret < 0)
+ goto error;
-static inline void meram_unmark(struct sh_mobile_meram_priv *priv,
- struct sh_mobile_meram_icb *icb)
-{
- int i;
- unsigned long pattern;
-
- if (icb->marker_icb < 0 || icb->cache_icb < 0)
- return;
-
- __clear_bit(icb->marker_icb, &priv->used_icb);
- __clear_bit(icb->cache_icb, &priv->used_icb);
-
- pattern = MERAM_CACHE_SET(icb->meram_offset, icb->meram_size);
- for (i = 0; i < priv->used_meram_cache_regions; i++) {
- if (priv->used_meram_cache[i] == pattern) {
- while (i < priv->used_meram_cache_regions - 1) {
- priv->used_meram_cache[i] =
- priv->used_meram_cache[i + 1] ;
- i++;
- }
- priv->used_meram_cache[i] = 0;
- priv->used_meram_cache_regions--;
- break;
- }
+ 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);
}
-/*
- * is this a YCbCr(NV12, NV16 or NV24) colorspace
- */
-static inline int is_nvcolor(int cspace)
+/* Unmark the specified ICB as used. */
+static void meram_free(struct sh_mobile_meram_priv *priv,
+ struct sh_mobile_meram_fb_cache *cache)
{
- if (cspace == SH_MOBILE_MERAM_PF_NV ||
- cspace == SH_MOBILE_MERAM_PF_NV24)
- return 1;
- return 0;
+ __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 inline void meram_set_next_addr(struct sh_mobile_meram_priv *priv,
- struct sh_mobile_meram_cfg *cfg,
- unsigned long base_addr_y,
- unsigned long base_addr_c)
+/* 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,
+ unsigned long base_addr_y,
+ unsigned long base_addr_c)
{
+ struct sh_mobile_meram_icb *icb = cache->planes[0].marker;
unsigned long target;
- target = (cfg->current_reg) ? MExxSARA : MExxSARB;
- cfg->current_reg ^= 1;
+ icb->current_reg ^= 1;
+ target = icb->current_reg ? MExxSARB : MExxSARA;
/* set the next address to fetch */
- meram_write_icb(priv->base, cfg->icb[0].cache_icb, target,
+ meram_write_icb(priv->base, cache->planes[0].cache->index, target,
base_addr_y);
- meram_write_icb(priv->base, cfg->icb[0].marker_icb, target,
- base_addr_y + cfg->icb[0].cache_unit);
-
- if (is_nvcolor(cfg->pixelformat)) {
- meram_write_icb(priv->base, cfg->icb[1].cache_icb, target,
- base_addr_c);
- meram_write_icb(priv->base, cfg->icb[1].marker_icb, target,
- base_addr_c + cfg->icb[1].cache_unit);
+ meram_write_icb(priv->base, cache->planes[0].marker->index, target,
+ base_addr_y + cache->planes[0].marker->cache_unit);
+
+ if (cache->nplanes == 2) {
+ meram_write_icb(priv->base, cache->planes[1].cache->index,
+ target, base_addr_c);
+ meram_write_icb(priv->base, cache->planes[1].marker->index,
+ target, base_addr_c +
+ cache->planes[1].marker->cache_unit);
}
}
-/*
- * get the next ICB address
- */
-static inline void meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata,
- struct sh_mobile_meram_cfg *cfg,
- unsigned long *icb_addr_y,
- unsigned long *icb_addr_c)
+/* Get the next ICB address. */
+static void
+meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata,
+ struct sh_mobile_meram_fb_cache *cache,
+ unsigned long *icb_addr_y, unsigned long *icb_addr_c)
{
+ struct sh_mobile_meram_icb *icb = cache->planes[0].marker;
unsigned long icb_offset;
if (pdata->addr_mode == SH_MOBILE_MERAM_MODE0)
- icb_offset = 0x80000000 | (cfg->current_reg << 29);
+ icb_offset = 0x80000000 | (icb->current_reg << 29);
else
- icb_offset = 0xc0000000 | (cfg->current_reg << 23);
+ icb_offset = 0xc0000000 | (icb->current_reg << 23);
- *icb_addr_y = icb_offset | (cfg->icb[0].marker_icb << 24);
- if (is_nvcolor(cfg->pixelformat))
- *icb_addr_c = icb_offset | (cfg->icb[1].marker_icb << 24);
+ *icb_addr_y = icb_offset | (cache->planes[0].marker->index << 24);
+ if (cache->nplanes == 2)
+ *icb_addr_c = icb_offset
+ | (cache->planes[1].marker->index << 24);
}
#define MERAM_CALC_BYTECOUNT(x, y) \
(((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1))
-/*
- * initialize MERAM
- */
-
+/* Initialize MERAM. */
static int meram_init(struct sh_mobile_meram_priv *priv,
- struct sh_mobile_meram_icb *icb,
- int xres, int yres, int *out_pitch)
+ 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);
unsigned long bnm;
- int lcdc_pitch, xpitch, line_cnt;
- int save_lines;
+ unsigned int lcdc_pitch;
+ unsigned int xpitch;
+ unsigned int line_cnt;
+ unsigned int save_lines;
/* adjust pitch to 1024, 2048, 4096 or 8192 */
lcdc_pitch = (xres - 1) | 1023;
@@ -322,13 +379,13 @@ static int meram_init(struct sh_mobile_meram_priv *priv,
lcdc_pitch = xpitch = MERAM_LINE_WIDTH;
line_cnt = total_byte_count >> 11;
*out_pitch = xres;
- save_lines = (icb->meram_size / 16 / MERAM_SEC_LINE);
+ save_lines = plane->marker->size / 16 / MERAM_SEC_LINE;
save_lines *= MERAM_SEC_LINE;
} else {
xpitch = xres;
line_cnt = yres;
*out_pitch = lcdc_pitch;
- save_lines = icb->meram_size / (lcdc_pitch >> 10) / 2;
+ save_lines = plane->marker->size / (lcdc_pitch >> 10) / 2;
save_lines &= 0xff;
}
bnm = (save_lines - 1) << 16;
@@ -336,19 +393,20 @@ static int meram_init(struct sh_mobile_meram_priv *priv,
/* TODO: we better to check if we have enough MERAM buffer size */
/* set up ICB */
- meram_write_icb(priv->base, icb->cache_icb, MExxBSIZE,
+ meram_write_icb(priv->base, plane->cache->index, MExxBSIZE,
MERAM_MExxBSIZE_VAL(0x0, line_cnt - 1, xpitch - 1));
- meram_write_icb(priv->base, icb->marker_icb, MExxBSIZE,
+ meram_write_icb(priv->base, plane->marker->index, MExxBSIZE,
MERAM_MExxBSIZE_VAL(0xf, line_cnt - 1, xpitch - 1));
- meram_write_icb(priv->base, icb->cache_icb, MExxMNCF, bnm);
- meram_write_icb(priv->base, icb->marker_icb, MExxMNCF, bnm);
+ meram_write_icb(priv->base, plane->cache->index, MExxMNCF, bnm);
+ meram_write_icb(priv->base, plane->marker->index, MExxMNCF, bnm);
- meram_write_icb(priv->base, icb->cache_icb, MExxSBSIZE, xpitch);
- meram_write_icb(priv->base, icb->marker_icb, MExxSBSIZE, xpitch);
+ meram_write_icb(priv->base, plane->cache->index, MExxSBSIZE, xpitch);
+ meram_write_icb(priv->base, plane->marker->index, MExxSBSIZE, xpitch);
/* save a cache unit size */
- icb->cache_unit = xres * save_lines;
+ plane->cache->cache_unit = xres * save_lines;
+ plane->marker->cache_unit = xres * save_lines;
/*
* Set MERAM for framebuffer
@@ -356,13 +414,13 @@ static int meram_init(struct sh_mobile_meram_priv *priv,
* we also chain the cache_icb and the marker_icb.
* we also split the allocated MERAM buffer between two ICBs.
*/
- meram_write_icb(priv->base, icb->cache_icb, MExxCTL,
- MERAM_MExxCTL_VAL(icb->marker_icb, icb->meram_offset) |
- MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM |
+ meram_write_icb(priv->base, plane->cache->index, MExxCTL,
+ MERAM_MExxCTL_VAL(plane->marker->index, marker->offset)
+ | MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM |
MExxCTL_MD_FB);
- meram_write_icb(priv->base, icb->marker_icb, MExxCTL,
- MERAM_MExxCTL_VAL(icb->cache_icb, icb->meram_offset +
- icb->meram_size / 2) |
+ meram_write_icb(priv->base, plane->marker->index, MExxCTL,
+ MERAM_MExxCTL_VAL(plane->cache->index, marker->offset +
+ plane->marker->size / 2) |
MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM |
MExxCTL_MD_FB);
@@ -370,239 +428,175 @@ static int meram_init(struct sh_mobile_meram_priv *priv,
}
static void meram_deinit(struct sh_mobile_meram_priv *priv,
- struct sh_mobile_meram_icb *icb)
+ struct sh_mobile_meram_fb_plane *plane)
{
/* disable ICB */
- meram_write_icb(priv->base, icb->cache_icb, MExxCTL,
+ meram_write_icb(priv->base, plane->cache->index, MExxCTL,
MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF);
- meram_write_icb(priv->base, icb->marker_icb, MExxCTL,
+ meram_write_icb(priv->base, plane->marker->index, MExxCTL,
MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF);
- icb->cache_unit = 0;
+
+ plane->cache->cache_unit = 0;
+ plane->marker->cache_unit = 0;
}
-/*
- * register the ICB
+/* -----------------------------------------------------------------------------
+ * Registration/unregistration
*/
-static int sh_mobile_meram_register(struct sh_mobile_meram_info *pdata,
- struct sh_mobile_meram_cfg *cfg,
- int xres, int yres, int pixelformat,
- unsigned long base_addr_y,
- unsigned long base_addr_c,
- unsigned long *icb_addr_y,
- unsigned long *icb_addr_c,
- int *pitch)
+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)
{
- struct platform_device *pdev;
- struct sh_mobile_meram_priv *priv;
- int n, out_pitch;
- int error = 0;
-
- if (!pdata || !pdata->priv || !pdata->pdev || !cfg)
- return -EINVAL;
+ struct sh_mobile_meram_fb_cache *cache;
+ struct sh_mobile_meram_priv *priv = pdata->priv;
+ struct platform_device *pdev = pdata->pdev;
+ unsigned int out_pitch;
if (pixelformat != SH_MOBILE_MERAM_PF_NV &&
pixelformat != SH_MOBILE_MERAM_PF_NV24 &&
pixelformat != SH_MOBILE_MERAM_PF_RGB)
- return -EINVAL;
-
- priv = pdata->priv;
- pdev = pdata->pdev;
+ return ERR_PTR(-EINVAL);
- dev_dbg(&pdev->dev, "registering %dx%d (%s) (y=%08lx, c=%08lx)",
- xres, yres, (!pixelformat) ? "yuv" : "rgb",
- base_addr_y, base_addr_c);
+ dev_dbg(&pdev->dev, "registering %dx%d (%s)", xres, yres,
+ !pixelformat ? "yuv" : "rgb");
/* we can't handle wider than 8192px */
if (xres > 8192) {
dev_err(&pdev->dev, "width exceeding the limit (> 8192).");
- return -EINVAL;
- }
-
- /* do we have at least one ICB config? */
- if (cfg->icb[0].marker_icb < 0 || cfg->icb[0].cache_icb < 0) {
- dev_err(&pdev->dev, "at least one ICB is required.");
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
}
mutex_lock(&priv->lock);
- if (priv->used_meram_cache_regions + 2 > SH_MOBILE_MERAM_ICB_NUM) {
- dev_err(&pdev->dev, "no more ICB available.");
- error = -EINVAL;
- goto err;
- }
-
- /* make sure that there's no overlaps */
- if (meram_check_overlap(priv, &cfg->icb[0])) {
- dev_err(&pdev->dev, "conflicting config detected.");
- error = -EINVAL;
+ /* We now register the ICBs and allocate the MERAM regions. */
+ cache = meram_alloc(priv, cfg, pixelformat);
+ if (IS_ERR(cache)) {
+ dev_err(&pdev->dev, "MERAM allocation failed (%ld).",
+ PTR_ERR(cache));
goto err;
}
- n = 1;
-
- /* do the same if we have the second ICB set */
- if (cfg->icb[1].marker_icb >= 0 && cfg->icb[1].cache_icb >= 0) {
- if (meram_check_overlap(priv, &cfg->icb[1])) {
- dev_err(&pdev->dev, "conflicting config detected.");
- error = -EINVAL;
- goto err;
- }
- n = 2;
- }
-
- if (is_nvcolor(pixelformat) && n != 2) {
- dev_err(&pdev->dev, "requires two ICB sets for planar Y/C.");
- error = -EINVAL;
- goto err;
- }
-
- /* we now register the ICB */
- cfg->pixelformat = pixelformat;
- meram_mark(priv, &cfg->icb[0]);
- if (is_nvcolor(pixelformat))
- meram_mark(priv, &cfg->icb[1]);
/* initialize MERAM */
- meram_init(priv, &cfg->icb[0], xres, yres, &out_pitch);
+ meram_init(priv, &cache->planes[0], xres, yres, &out_pitch);
*pitch = out_pitch;
if (pixelformat == SH_MOBILE_MERAM_PF_NV)
- meram_init(priv, &cfg->icb[1], xres, (yres + 1) / 2,
+ meram_init(priv, &cache->planes[1], xres, (yres + 1) / 2,
&out_pitch);
else if (pixelformat == SH_MOBILE_MERAM_PF_NV24)
- meram_init(priv, &cfg->icb[1], 2 * xres, (yres + 1) / 2,
+ meram_init(priv, &cache->planes[1], 2 * xres, (yres + 1) / 2,
&out_pitch);
- cfg->current_reg = 1;
- meram_set_next_addr(priv, cfg, base_addr_y, base_addr_c);
- meram_get_next_icb_addr(pdata, cfg, icb_addr_y, icb_addr_c);
-
- dev_dbg(&pdev->dev, "registered - can access via y=%08lx, c=%08lx",
- *icb_addr_y, *icb_addr_c);
-
err:
mutex_unlock(&priv->lock);
- return error;
+ return cache;
}
-static int sh_mobile_meram_unregister(struct sh_mobile_meram_info *pdata,
- struct sh_mobile_meram_cfg *cfg)
+static void
+sh_mobile_meram_unregister(struct sh_mobile_meram_info *pdata, void *data)
{
- struct sh_mobile_meram_priv *priv;
-
- if (!pdata || !pdata->priv || !cfg)
- return -EINVAL;
-
- priv = pdata->priv;
+ struct sh_mobile_meram_fb_cache *cache = data;
+ struct sh_mobile_meram_priv *priv = pdata->priv;
mutex_lock(&priv->lock);
- /* deinit & unmark */
- if (is_nvcolor(cfg->pixelformat)) {
- meram_deinit(priv, &cfg->icb[1]);
- meram_unmark(priv, &cfg->icb[1]);
- }
- meram_deinit(priv, &cfg->icb[0]);
- meram_unmark(priv, &cfg->icb[0]);
+ /* deinit & free */
+ meram_deinit(priv, &cache->planes[0]);
+ if (cache->nplanes == 2)
+ meram_deinit(priv, &cache->planes[1]);
- mutex_unlock(&priv->lock);
+ meram_free(priv, cache);
- return 0;
+ mutex_unlock(&priv->lock);
}
-static int sh_mobile_meram_update(struct sh_mobile_meram_info *pdata,
- struct sh_mobile_meram_cfg *cfg,
- unsigned long base_addr_y,
- unsigned long base_addr_c,
- unsigned long *icb_addr_y,
- unsigned long *icb_addr_c)
+static void
+sh_mobile_meram_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)
{
- struct sh_mobile_meram_priv *priv;
-
- if (!pdata || !pdata->priv || !cfg)
- return -EINVAL;
-
- priv = pdata->priv;
+ struct sh_mobile_meram_fb_cache *cache = data;
+ struct sh_mobile_meram_priv *priv = pdata->priv;
mutex_lock(&priv->lock);
- meram_set_next_addr(priv, cfg, base_addr_y, base_addr_c);
- meram_get_next_icb_addr(pdata, cfg, icb_addr_y, icb_addr_c);
+ meram_set_next_addr(priv, cache, base_addr_y, base_addr_c);
+ meram_get_next_icb_addr(pdata, cache, icb_addr_y, icb_addr_c);
mutex_unlock(&priv->lock);
-
- return 0;
}
-static int sh_mobile_meram_runtime_suspend(struct device *dev)
+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,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power management
+ */
+
+static int sh_mobile_meram_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
- int k, j;
+ unsigned int i, j;
- for (k = 0; k < CMN_REGS_SIZE; k++)
- priv->cmn_saved_regs[k] = meram_read_reg(priv->base,
- common_regs[k]);
+ for (i = 0; i < MERAM_REGS_SIZE; i++)
+ priv->regs[i] = meram_read_reg(priv->base, common_regs[i]);
- for (j = 0; j < 32; j++) {
- if (!test_bit(j, &priv->used_icb))
+ for (i = 0; i < 32; i++) {
+ if (!test_bit(i, &priv->used_icb))
continue;
- for (k = 0; k < ICB_REGS_SIZE; k++) {
- priv->icb_saved_regs[j * ICB_REGS_SIZE + k] =
- meram_read_icb(priv->base, j, icb_regs[k]);
+ for (j = 0; j < ICB_REGS_SIZE; j++) {
+ priv->icbs[i].regs[j] =
+ meram_read_icb(priv->base, i, icb_regs[j]);
/* Reset ICB on resume */
- if (icb_regs[k] == MExxCTL)
- priv->icb_saved_regs[j * ICB_REGS_SIZE + k] |=
+ if (icb_regs[j] == MExxCTL)
+ priv->icbs[i].regs[j] |=
MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF;
}
}
return 0;
}
-static int sh_mobile_meram_runtime_resume(struct device *dev)
+static int sh_mobile_meram_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
- int k, j;
+ unsigned int i, j;
- for (j = 0; j < 32; j++) {
- if (!test_bit(j, &priv->used_icb))
+ for (i = 0; i < 32; i++) {
+ if (!test_bit(i, &priv->used_icb))
continue;
- for (k = 0; k < ICB_REGS_SIZE; k++) {
- meram_write_icb(priv->base, j, icb_regs[k],
- priv->icb_saved_regs[j * ICB_REGS_SIZE + k]);
- }
+ for (j = 0; j < ICB_REGS_SIZE; j++)
+ meram_write_icb(priv->base, i, icb_regs[j],
+ priv->icbs[i].regs[j]);
}
- for (k = 0; k < CMN_REGS_SIZE; k++)
- meram_write_reg(priv->base, common_regs[k],
- priv->cmn_saved_regs[k]);
+ for (i = 0; i < MERAM_REGS_SIZE; i++)
+ meram_write_reg(priv->base, common_regs[i], priv->regs[i]);
return 0;
}
-static const struct dev_pm_ops sh_mobile_meram_dev_pm_ops = {
- .runtime_suspend = sh_mobile_meram_runtime_suspend,
- .runtime_resume = sh_mobile_meram_runtime_resume,
-};
-
-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,
-};
+static UNIVERSAL_DEV_PM_OPS(sh_mobile_meram_dev_pm_ops,
+ sh_mobile_meram_suspend,
+ sh_mobile_meram_resume, NULL);
-/*
- * initialize MERAM
+/* -----------------------------------------------------------------------------
+ * Probe/remove and driver init/exit
*/
-static int sh_mobile_meram_remove(struct platform_device *pdev);
-
static int __devinit sh_mobile_meram_probe(struct platform_device *pdev)
{
struct sh_mobile_meram_priv *priv;
struct sh_mobile_meram_info *pdata = pdev->dev.platform_data;
- struct resource *res;
+ struct resource *regs;
+ struct resource *meram;
+ unsigned int i;
int error;
if (!pdata) {
@@ -610,8 +604,9 @@ static int __devinit sh_mobile_meram_probe(struct platform_device *pdev)
return -EINVAL;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ meram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (regs == NULL || meram == NULL) {
dev_err(&pdev->dev, "cannot get platform resources\n");
return -ENOENT;
}
@@ -622,32 +617,74 @@ static int __devinit sh_mobile_meram_probe(struct platform_device *pdev)
return -ENOMEM;
}
- platform_set_drvdata(pdev, priv);
-
- /* initialize private data */
+ /* Initialize private data. */
mutex_init(&priv->lock);
- priv->base = ioremap_nocache(res->start, resource_size(res));
+ priv->used_icb = pdata->reserved_icbs;
+
+ for (i = 0; i < MERAM_ICB_NUM; ++i)
+ priv->icbs[i].index = i;
+
+ pdata->ops = &sh_mobile_meram_ops;
+ pdata->priv = priv;
+ pdata->pdev = pdev;
+
+ /* Request memory regions and remap the registers. */
+ if (!request_mem_region(regs->start, resource_size(regs), pdev->name)) {
+ dev_err(&pdev->dev, "MERAM registers region already claimed\n");
+ error = -EBUSY;
+ goto err_req_regs;
+ }
+
+ if (!request_mem_region(meram->start, resource_size(meram),
+ pdev->name)) {
+ dev_err(&pdev->dev, "MERAM memory region already claimed\n");
+ error = -EBUSY;
+ goto err_req_meram;
+ }
+
+ priv->base = ioremap_nocache(regs->start, resource_size(regs));
if (!priv->base) {
dev_err(&pdev->dev, "ioremap failed\n");
error = -EFAULT;
- goto err;
+ goto err_ioremap;
}
- pdata->ops = &sh_mobile_meram_ops;
- pdata->priv = priv;
- pdata->pdev = pdev;
+
+ priv->meram = meram->start;
+
+ /* Create and initialize the MERAM memory pool. */
+ priv->pool = gen_pool_create(ilog2(MERAM_GRANULARITY), -1);
+ if (priv->pool == NULL) {
+ error = -ENOMEM;
+ goto err_genpool;
+ }
+
+ error = gen_pool_add(priv->pool, meram->start, resource_size(meram),
+ -1);
+ if (error < 0)
+ goto err_genpool;
/* initialize ICB addressing mode */
if (pdata->addr_mode == SH_MOBILE_MERAM_MODE1)
meram_write_reg(priv->base, MEVCR1, MEVCR1_AMD1);
+ platform_set_drvdata(pdev, priv);
pm_runtime_enable(&pdev->dev);
dev_info(&pdev->dev, "sh_mobile_meram initialized.");
return 0;
-err:
- sh_mobile_meram_remove(pdev);
+err_genpool:
+ if (priv->pool)
+ gen_pool_destroy(priv->pool);
+ iounmap(priv->base);
+err_ioremap:
+ release_mem_region(meram->start, resource_size(meram));
+err_req_meram:
+ release_mem_region(regs->start, resource_size(regs));
+err_req_regs:
+ mutex_destroy(&priv->lock);
+ kfree(priv);
return error;
}
@@ -656,11 +693,16 @@ err:
static int sh_mobile_meram_remove(struct platform_device *pdev)
{
struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
+ struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct resource *meram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
pm_runtime_disable(&pdev->dev);
- if (priv->base)
- iounmap(priv->base);
+ gen_pool_destroy(priv->pool);
+
+ iounmap(priv->base);
+ release_mem_region(meram->start, resource_size(meram));
+ release_mem_region(regs->start, resource_size(regs));
mutex_destroy(&priv->lock);