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drm/omap: Add OMAP5 support
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Add support for OMAP5 processor.  The main differences are that the OMAP5
has 2 containers, one for 1D and one for 2D.  Each container is 128MiB in
size.

Signed-off-by: Andy Gross <andy.gross@ti.com>
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Andy Gross authored and Greg Kroah-Hartman committed Jan 17, 2013
1 parent e78edba commit c6b7ae5
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Showing 3 changed files with 90 additions and 44 deletions.
5 changes: 5 additions & 0 deletions drivers/staging/omapdrm/omap_dmm_priv.h
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Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,11 @@ struct pat {
#define DESCR_SIZE 128
#define REFILL_BUFFER_SIZE ((4 * 128 * 256) + (3 * DESCR_SIZE))

/* For OMAP5, a fixed offset is added to all Y coordinates for 1D buffers.
* This is used in programming to address the upper portion of the LUT
*/
#define OMAP5_LUT_OFFSET 128

struct dmm;

struct dmm_txn {
Expand Down
127 changes: 83 additions & 44 deletions drivers/staging/omapdrm/omap_dmm_tiler.c
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Original file line number Diff line number Diff line change
Expand Up @@ -213,6 +213,11 @@ static void dmm_txn_append(struct dmm_txn *txn, struct pat_area *area,
txn->last_pat->next_pa = (uint32_t)pat_pa;

pat->area = *area;

/* adjust Y coordinates based off of container parameters */
pat->area.y0 += engine->tcm->y_offset;
pat->area.y1 += engine->tcm->y_offset;

pat->ctrl = (struct pat_ctrl){
.start = 1,
.lut_id = engine->tcm->lut_id,
Expand Down Expand Up @@ -622,6 +627,11 @@ static int omap_dmm_probe(struct platform_device *dev)
omap_dmm->lut_width = ((pat_geom >> 16) & 0xF) << 5;
omap_dmm->lut_height = ((pat_geom >> 24) & 0xF) << 5;

/* increment LUT by one if on OMAP5 */
/* LUT has twice the height, and is split into a separate container */
if (omap_dmm->lut_height != omap_dmm->container_height)
omap_dmm->num_lut++;

/* initialize DMM registers */
writel(0x88888888, omap_dmm->base + DMM_PAT_VIEW__0);
writel(0x88888888, omap_dmm->base + DMM_PAT_VIEW__1);
Expand Down Expand Up @@ -701,6 +711,9 @@ static int omap_dmm_probe(struct platform_device *dev)
}

/* init containers */
/* Each LUT is associated with a TCM (container manager). We use the
lut_id to denote the lut_id used to identify the correct LUT for
programming during reill operations */
for (i = 0; i < omap_dmm->num_lut; i++) {
omap_dmm->tcm[i] = sita_init(omap_dmm->container_width,
omap_dmm->container_height,
Expand All @@ -717,13 +730,23 @@ static int omap_dmm_probe(struct platform_device *dev)

/* assign access mode containers to applicable tcm container */
/* OMAP 4 has 1 container for all 4 views */
/* OMAP 5 has 2 containers, 1 for 2D and 1 for 1D */
containers[TILFMT_8BIT] = omap_dmm->tcm[0];
containers[TILFMT_16BIT] = omap_dmm->tcm[0];
containers[TILFMT_32BIT] = omap_dmm->tcm[0];
containers[TILFMT_PAGE] = omap_dmm->tcm[0];

if (omap_dmm->container_height != omap_dmm->lut_height) {
/* second LUT is used for PAGE mode. Programming must use
y offset that is added to all y coordinates. LUT id is still
0, because it is the same LUT, just the upper 128 lines */
containers[TILFMT_PAGE] = omap_dmm->tcm[1];
omap_dmm->tcm[1]->y_offset = OMAP5_LUT_OFFSET;
omap_dmm->tcm[1]->lut_id = 0;
} else {
containers[TILFMT_PAGE] = omap_dmm->tcm[0];
}

area = (struct tcm_area) {
.is2d = true,
.tcm = NULL,
.p1.x = omap_dmm->container_width - 1,
.p1.y = omap_dmm->container_height - 1,
Expand Down Expand Up @@ -835,64 +858,81 @@ int tiler_map_show(struct seq_file *s, void *arg)
int h_adj;
int w_adj;
unsigned long flags;
int lut_idx;


if (!omap_dmm) {
/* early return if dmm/tiler device is not initialized */
return 0;
}

h_adj = omap_dmm->lut_height / ydiv;
w_adj = omap_dmm->lut_width / xdiv;
h_adj = omap_dmm->container_height / ydiv;
w_adj = omap_dmm->container_width / xdiv;

map = kzalloc(h_adj * sizeof(*map), GFP_KERNEL);
global_map = kzalloc((w_adj + 1) * h_adj, GFP_KERNEL);
map = kmalloc(h_adj * sizeof(*map), GFP_KERNEL);
global_map = kmalloc((w_adj + 1) * h_adj, GFP_KERNEL);

if (!map || !global_map)
goto error;

memset(global_map, ' ', (w_adj + 1) * h_adj);
for (i = 0; i < omap_dmm->lut_height; i++) {
map[i] = global_map + i * (w_adj + 1);
map[i][w_adj] = 0;
}
spin_lock_irqsave(&list_lock, flags);
for (lut_idx = 0; lut_idx < omap_dmm->num_lut; lut_idx++) {
memset(map, 0, sizeof(h_adj * sizeof(*map)));
memset(global_map, ' ', (w_adj + 1) * h_adj);

list_for_each_entry(block, &omap_dmm->alloc_head, alloc_node) {
if (block->fmt != TILFMT_PAGE) {
fill_map(map, xdiv, ydiv, &block->area, *m2dp, true);
if (!*++a2dp)
a2dp = a2d;
if (!*++m2dp)
m2dp = m2d;
map_2d_info(map, xdiv, ydiv, nice, &block->area);
} else {
bool start = read_map_pt(map, xdiv, ydiv,
&block->area.p0)
== ' ';
bool end = read_map_pt(map, xdiv, ydiv, &block->area.p1)
== ' ';
tcm_for_each_slice(a, block->area, p)
fill_map(map, xdiv, ydiv, &a, '=', true);
fill_map_pt(map, xdiv, ydiv, &block->area.p0,
for (i = 0; i < omap_dmm->container_height; i++) {
map[i] = global_map + i * (w_adj + 1);
map[i][w_adj] = 0;
}

spin_lock_irqsave(&list_lock, flags);

list_for_each_entry(block, &omap_dmm->alloc_head, alloc_node) {
if (block->area.tcm == omap_dmm->tcm[lut_idx]) {
if (block->fmt != TILFMT_PAGE) {
fill_map(map, xdiv, ydiv, &block->area,
*m2dp, true);
if (!*++a2dp)
a2dp = a2d;
if (!*++m2dp)
m2dp = m2d;
map_2d_info(map, xdiv, ydiv, nice,
&block->area);
} else {
bool start = read_map_pt(map, xdiv,
ydiv, &block->area.p0) == ' ';
bool end = read_map_pt(map, xdiv, ydiv,
&block->area.p1) == ' ';

tcm_for_each_slice(a, block->area, p)
fill_map(map, xdiv, ydiv, &a,
'=', true);
fill_map_pt(map, xdiv, ydiv,
&block->area.p0,
start ? '<' : 'X');
fill_map_pt(map, xdiv, ydiv, &block->area.p1,
fill_map_pt(map, xdiv, ydiv,
&block->area.p1,
end ? '>' : 'X');
map_1d_info(map, xdiv, ydiv, nice, &block->area);
map_1d_info(map, xdiv, ydiv, nice,
&block->area);
}
}
}
}

spin_unlock_irqrestore(&list_lock, flags);
spin_unlock_irqrestore(&list_lock, flags);

if (s) {
seq_printf(s, "BEGIN DMM TILER MAP\n");
for (i = 0; i < 128; i++)
seq_printf(s, "%03d:%s\n", i, map[i]);
seq_printf(s, "END TILER MAP\n");
} else {
dev_dbg(omap_dmm->dev, "BEGIN DMM TILER MAP\n");
for (i = 0; i < 128; i++)
dev_dbg(omap_dmm->dev, "%03d:%s\n", i, map[i]);
dev_dbg(omap_dmm->dev, "END TILER MAP\n");
if (s) {
seq_printf(s, "CONTAINER %d DUMP BEGIN\n", lut_idx);
for (i = 0; i < 128; i++)
seq_printf(s, "%03d:%s\n", i, map[i]);
seq_printf(s, "CONTAINER %d DUMP END\n", lut_idx);
} else {
dev_dbg(omap_dmm->dev, "CONTAINER %d DUMP BEGIN\n",
lut_idx);
for (i = 0; i < 128; i++)
dev_dbg(omap_dmm->dev, "%03d:%s\n", i, map[i]);
dev_dbg(omap_dmm->dev, "CONTAINER %d DUMP END\n",
lut_idx);
}
}

error:
Expand All @@ -913,7 +953,6 @@ static int omap_dmm_resume(struct device *dev)
return -ENODEV;

area = (struct tcm_area) {
.is2d = true,
.tcm = NULL,
.p1.x = omap_dmm->container_width - 1,
.p1.y = omap_dmm->container_height - 1,
Expand Down
2 changes: 2 additions & 0 deletions drivers/staging/omapdrm/tcm.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,8 @@ struct tcm {
u16 width, height; /* container dimensions */
int lut_id; /* Lookup table identifier */

unsigned int y_offset; /* offset to use for y coordinates */

/* 'pvt' structure shall contain any tcm details (attr) along with
linked list of allocated areas and mutex for mutually exclusive access
to the list. It may also contain copies of width and height to notice
Expand Down

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