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drm/nouveau/bios: update gpio parsing apis to match current design 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-12-07 10:09:17 +10:00
parent caba557020
commit d2bcea686f
5 changed files with 93 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/nouveau/core/include/subdev/bios/gpio.h
View File

@ -25,9 +25,11 @@ struct dcb_gpio_func {
u8 param;
};
u16 dcb_gpio_table(struct nouveau_bios *);
u16 dcb_gpio_entry(struct nouveau_bios *, int idx, int ent, u8 *ver);
int dcb_gpio_parse(struct nouveau_bios *, int idx, u8 func, u8 line,
u16 dcb_gpio_table(struct nouveau_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
u16 dcb_gpio_entry(struct nouveau_bios *, int idx, int ent, u8 *ver, u8 *len);
u16 dcb_gpio_parse(struct nouveau_bios *, int idx, int ent, u8 *ver, u8 *len,
struct dcb_gpio_func *);
u16 dcb_gpio_match(struct nouveau_bios *, int idx, u8 func, u8 line,
u8 *ver, u8 *len, struct dcb_gpio_func *);
#endif

134
drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
View File

@ -27,84 +27,105 @@
#include <subdev/bios/gpio.h>
u16
dcb_gpio_table(struct nouveau_bios *bios)
dcb_gpio_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
u8 ver, hdr, cnt, len;
u16 dcb = dcb_table(bios, &ver, &hdr, &cnt, &len);
u16 data = 0x0000;
u16 dcb = dcb_table(bios, ver, hdr, cnt, len);
if (dcb) {
if (ver >= 0x30 && hdr >= 0x0c)
return nv_ro16(bios, dcb + 0x0a);
if (ver >= 0x22 && nv_ro08(bios, dcb - 1) >= 0x13)
return nv_ro16(bios, dcb - 0x0f);
if (*ver >= 0x30 && *hdr >= 0x0c)
data = nv_ro16(bios, dcb + 0x0a);
else
if (*ver >= 0x22 && nv_ro08(bios, dcb - 1) >= 0x13)
data = nv_ro16(bios, dcb - 0x0f);
if (data) {
*ver = nv_ro08(bios, data + 0x00);
if (*ver < 0x30) {
*hdr = 3;
*cnt = nv_ro08(bios, data + 0x02);
*len = nv_ro08(bios, data + 0x01);
} else
if (*ver <= 0x41) {
*hdr = nv_ro08(bios, data + 0x01);
*cnt = nv_ro08(bios, data + 0x02);
*len = nv_ro08(bios, data + 0x03);
} else {
data = 0x0000;
}
}
}
return data;
}
u16
dcb_gpio_entry(struct nouveau_bios *bios, int idx, int ent, u8 *ver, u8 *len)
{
u8 hdr, cnt;
u16 gpio = !idx ? dcb_gpio_table(bios, ver, &hdr, &cnt, len) : 0x0000;
if (gpio && ent < cnt)
return gpio + hdr + (ent * *len);
return 0x0000;
}
u16
dcb_gpio_entry(struct nouveau_bios *bios, int idx, int ent, u8 *ver)
{
u16 gpio = dcb_gpio_table(bios);
if (gpio) {
*ver = nv_ro08(bios, gpio);
if (*ver < 0x30 && ent < nv_ro08(bios, gpio + 2))
return gpio + 3 + (ent * nv_ro08(bios, gpio + 1));
else if (ent < nv_ro08(bios, gpio + 2))
return gpio + nv_ro08(bios, gpio + 1) +
(ent * nv_ro08(bios, gpio + 3));
}
return 0x0000;
}
int
dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line,
dcb_gpio_parse(struct nouveau_bios *bios, int idx, int ent, u8 *ver, u8 *len,
struct dcb_gpio_func *gpio)
{
u8 ver, hdr, cnt, len;
u16 entry;
int i = -1;
while ((entry = dcb_gpio_entry(bios, idx, ++i, &ver))) {
if (ver < 0x40) {
u16 data = nv_ro16(bios, entry);
u16 data = dcb_gpio_entry(bios, idx, ent, ver, len);
if (data) {
if (*ver < 0x40) {
u16 info = nv_ro16(bios, data);
*gpio = (struct dcb_gpio_func) {
.line = (data & 0x001f) >> 0,
.func = (data & 0x07e0) >> 5,
.log[0] = (data & 0x1800) >> 11,
.log[1] = (data & 0x6000) >> 13,
.param = !!(data & 0x8000),
.line = (info & 0x001f) >> 0,
.func = (info & 0x07e0) >> 5,
.log[0] = (info & 0x1800) >> 11,
.log[1] = (info & 0x6000) >> 13,
.param = !!(info & 0x8000),
};
} else
if (ver < 0x41) {
u32 data = nv_ro32(bios, entry);
if (*ver < 0x41) {
u32 info = nv_ro32(bios, data);
*gpio = (struct dcb_gpio_func) {
.line = (data & 0x0000001f) >> 0,
.func = (data & 0x0000ff00) >> 8,
.log[0] = (data & 0x18000000) >> 27,
.log[1] = (data & 0x60000000) >> 29,
.param = !!(data & 0x80000000),
.line = (info & 0x0000001f) >> 0,
.func = (info & 0x0000ff00) >> 8,
.log[0] = (info & 0x18000000) >> 27,
.log[1] = (info & 0x60000000) >> 29,
.param = !!(info & 0x80000000),
};
} else {
u32 data = nv_ro32(bios, entry + 0);
u8 data1 = nv_ro32(bios, entry + 4);
u32 info = nv_ro32(bios, data + 0);
u8 info1 = nv_ro32(bios, data + 4);
*gpio = (struct dcb_gpio_func) {
.line = (data & 0x0000003f) >> 0,
.func = (data & 0x0000ff00) >> 8,
.log[0] = (data1 & 0x30) >> 4,
.log[1] = (data1 & 0xc0) >> 6,
.param = !!(data & 0x80000000),
.line = (info & 0x0000003f) >> 0,
.func = (info & 0x0000ff00) >> 8,
.log[0] = (info1 & 0x30) >> 4,
.log[1] = (info1 & 0xc0) >> 6,
.param = !!(info & 0x80000000),
};
}
}
return data;
}
u16
dcb_gpio_match(struct nouveau_bios *bios, int idx, u8 func, u8 line,
u8 *ver, u8 *len, struct dcb_gpio_func *gpio)
{
u8 hdr, cnt, i = 0;
u16 data;
while ((data = dcb_gpio_parse(bios, idx, i++, ver, len, gpio))) {
if ((line == 0xff || line == gpio->line) &&
(func == 0xff || func == gpio->func))
return 0;
return data;
}
/* DCB 2.2, fixed TVDAC GPIO data */
if ((entry = dcb_table(bios, &ver, &hdr, &cnt, &len))) {
if (ver >= 0x22 && ver < 0x30 && func == DCB_GPIO_TVDAC0) {
u8 conf = nv_ro08(bios, entry - 5);
u8 addr = nv_ro08(bios, entry - 4);
if ((data = dcb_table(bios, ver, &hdr, &cnt, len))) {
if (*ver >= 0x22 && *ver < 0x30 && func == DCB_GPIO_TVDAC0) {
u8 conf = nv_ro08(bios, data - 5);
u8 addr = nv_ro08(bios, data - 4);
if (conf & 0x01) {
*gpio = (struct dcb_gpio_func) {
.func = DCB_GPIO_TVDAC0,
@ -112,10 +133,11 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line,
.log[0] = !!(conf & 0x02),
.log[1] = !(conf & 0x02),
};
return 0;
*ver = 0x00;
return data;
}
}
}
return -EINVAL;
return 0x0000;
}

7
drivers/gpu/drm/nouveau/core/subdev/gpio/base.c
View File

@ -43,10 +43,15 @@ static int
nouveau_gpio_find(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line,
struct dcb_gpio_func *func)
{
struct nouveau_bios *bios = nouveau_bios(gpio);
u8 ver, len;
u16 data;
if (line == 0xff && tag == 0xff)
return -EINVAL;
if (!dcb_gpio_parse(nouveau_bios(gpio), idx, tag, line, func))
data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func);
if (data)
return 0;
/* Apple iMac G4 NV18 */

4
drivers/gpu/drm/nouveau/core/subdev/gpio/nv50.c
View File

@ -33,11 +33,11 @@ nv50_gpio_reset(struct nouveau_gpio *gpio)
{
struct nouveau_bios *bios = nouveau_bios(gpio);
struct nv50_gpio_priv *priv = (void *)gpio;
u8 ver, len;
u16 entry;
u8 ver;
int ent = -1;
while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver))) {
while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) {
static const u32 regs[] = { 0xe100, 0xe28c };
u32 data = nv_ro32(bios, entry);
u8 line = (data & 0x0000001f);

4
drivers/gpu/drm/nouveau/core/subdev/gpio/nvd0.c
View File

@ -33,11 +33,11 @@ nvd0_gpio_reset(struct nouveau_gpio *gpio)
{
struct nouveau_bios *bios = nouveau_bios(gpio);
struct nvd0_gpio_priv *priv = (void *)gpio;
u8 ver, len;
u16 entry;
u8 ver;
int ent = -1;
while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver))) {
while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) {
u32 data = nv_ro32(bios, entry);
u8 line = (data & 0x0000003f);
u8 defs = !!(data & 0x00000080);