In Zorro II mode, the Village Tronic Picasso IV graphics card shows up as
either 2 or 3 Zorro devices:
- One for the registers of the Cirrus Logic graphics chip,
- One for the first bank of 2 MiB of graphics memory,
- An optional one for the second bank of 2 MiB of graphics memory,
if there was enough free Zorro II address space.
Based on src/sys/arch/amiga/dev/grf_cl.c from NetBSD.
Signed-off-by: Geert Uytterhoeven <[email protected]>
--
Untested, due to lack of hardware
---
drivers/video/cirrusfb.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/video/cirrusfb.c b/drivers/video/cirrusfb.c
index 357139a..816433f 100644
--- a/drivers/video/cirrusfb.c
+++ b/drivers/video/cirrusfb.c
@@ -287,6 +287,7 @@ struct zorrocl {
/* If zero, use autoprobe on RAM device */
u32 ramoffset; /* Offset of video RAM in first Zorro device */
zorro_id ramid; /* Zorro ID of RAM device */
+ zorro_id ramid2; /* Zorro ID of optional second RAM device */
};
static const struct zorrocl zcl_sd64 __devinitconst = {
@@ -316,6 +317,13 @@ static const struct zorrocl zcl_picasso4_z3 __devinitconst
= {
.ramoffset = 0x01000000,
};
+static const struct zorrocl zcl_picasso4_z2 __devinitconst = {
+ .type = BT_PICASSO4,
+ .regoffset = 0x10000,
+ .ramid = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_RAM1,
+ .ramid2 = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_RAM2,
+};
+
static const struct zorro_device_id cirrusfb_zorro_table[] __devinitconst = {
{
@@ -333,6 +341,9 @@ static const struct zorro_device_id cirrusfb_zorro_table[]
__devinitconst = {
}, {
.id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3,
.driver_data = (unsigned long)&zcl_picasso4_z3,
+ }, {
+ .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z2_REG,
+ .driver_data = (unsigned long)&zcl_picasso4_z2,
},
{ 0 }
};
@@ -2257,6 +2268,16 @@ static int __devinit cirrusfb_zorro_register(struct
zorro_dev *z,
}
rambase = zorro_resource_start(ram);
ramsize = zorro_resource_len(ram);
+ if (zcl->ramid2 &&
+ (ram = zorro_find_device(zcl->ramid2, NULL))) {
+ if (zorro_resource_start(ram) != rambase + ramsize) {
+ dev_warn(info->device,
+ "Skipping non-contiguous RAM at %pR\n",
+ &ram->resource);
+ } else {
+ ramsize += zorro_resource_len(ram);
+ }
+ }
}
dev_info(info->device,
--
1.7.0.4
--
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