The attached set of patches adds an i2c algo for radeon hardware. It
transparently supports bit-banging i2c on all asics and uses the hw
i2c engine on supported asics (r1xx-r5xx right now, support for newer
chips can be added later). For the bit banging, it encapsulates the
gpio masking that needs to be done before using the lines, so
i2c_transfer can be used directly and the buses can be used for other
drivers like tuners, thermal chips, etc. I used i2c-bit-algo in the
radeon i2c algo, is that kosher? It seems to make more sense than
dragging i2c-bit-algo into the driver. Thoughts?
Alex
From 336b19d162f7b501288bd2b4eb676c84e5435516 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeuc...@gmail.com>
Date: Tue, 22 Dec 2009 15:04:48 -0500
Subject: [PATCH] drm/radeon/kms: add radeon i2c algo
Currently just a wrapper around bit algo
Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
drivers/gpu/drm/radeon/radeon_combios.c | 40 +++++-------
drivers/gpu/drm/radeon/radeon_connectors.c | 14 +----
drivers/gpu/drm/radeon/radeon_display.c | 4 -
drivers/gpu/drm/radeon/radeon_i2c.c | 91 +++++++++++++++++++++-------
drivers/gpu/drm/radeon/radeon_mode.h | 25 +++++---
5 files changed, 102 insertions(+), 72 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 6bab8b8..47b7d92 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -2345,23 +2345,21 @@ void radeon_external_tmds_setup(struct drm_encoder *encoder)
switch (tmds->dvo_chip) {
case DVO_SIL164:
/* sil 164 */
- radeon_i2c_do_lock(tmds->i2c_bus, 1);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
- tmds->slave_addr,
- 0x08, 0x30);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
+ radeon_i2c_put_byte(tmds->i2c_bus,
+ tmds->slave_addr,
+ 0x08, 0x30);
+ radeon_i2c_put_byte(tmds->i2c_bus,
tmds->slave_addr,
0x09, 0x00);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
- tmds->slave_addr,
- 0x0a, 0x90);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
- tmds->slave_addr,
- 0x0c, 0x89);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
+ radeon_i2c_put_byte(tmds->i2c_bus,
+ tmds->slave_addr,
+ 0x0a, 0x90);
+ radeon_i2c_put_byte(tmds->i2c_bus,
+ tmds->slave_addr,
+ 0x0c, 0x89);
+ radeon_i2c_put_byte(tmds->i2c_bus,
tmds->slave_addr,
0x08, 0x3b);
- radeon_i2c_do_lock(tmds->i2c_bus, 0);
break;
case DVO_SIL1178:
/* sil 1178 - untested */
@@ -2446,11 +2444,9 @@ bool radeon_combios_external_tmds_setup(struct drm_encoder *encoder)
index++;
val = RBIOS8(index);
index++;
- radeon_i2c_do_lock(tmds->i2c_bus, 1);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
- slave_addr,
- reg, val);
- radeon_i2c_do_lock(tmds->i2c_bus, 0);
+ radeon_i2c_put_byte(tmds->i2c_bus,
+ slave_addr,
+ reg, val);
break;
default:
DRM_ERROR("Unknown id %d\n", id >> 13);
@@ -2503,11 +2499,9 @@ bool radeon_combios_external_tmds_setup(struct drm_encoder *encoder)
reg = id & 0x1fff;
val = RBIOS8(index);
index += 1;
- radeon_i2c_do_lock(tmds->i2c_bus, 1);
- radeon_i2c_sw_put_byte(tmds->i2c_bus,
- tmds->slave_addr,
- reg, val);
- radeon_i2c_do_lock(tmds->i2c_bus, 0);
+ radeon_i2c_put_byte(tmds->i2c_bus,
+ tmds->slave_addr,
+ reg, val);
break;
default:
DRM_ERROR("Unknown id %d\n", id >> 13);
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 8da06e1..d7a2081 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -465,10 +465,8 @@ static enum drm_connector_status radeon_lvds_detect(struct drm_connector *connec
ret = connector_status_connected;
else {
if (radeon_connector->ddc_bus) {
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
radeon_connector->edid = drm_get_edid(&radeon_connector->base,
&radeon_connector->ddc_bus->adapter);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
if (radeon_connector->edid)
ret = connector_status_connected;
}
@@ -573,17 +571,13 @@ static enum drm_connector_status radeon_vga_detect(struct drm_connector *connect
if (!encoder)
ret = connector_status_disconnected;
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
dret = radeon_ddc_probe(radeon_connector);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
if (dret) {
if (radeon_connector->edid) {
kfree(radeon_connector->edid);
radeon_connector->edid = NULL;
}
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
if (!radeon_connector->edid) {
DRM_ERROR("%s: probed a monitor but no|invalid EDID\n",
@@ -728,17 +722,13 @@ static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connect
enum drm_connector_status ret = connector_status_disconnected;
bool dret;
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
dret = radeon_ddc_probe(radeon_connector);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
if (dret) {
if (radeon_connector->edid) {
kfree(radeon_connector->edid);
radeon_connector->edid = NULL;
}
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
if (!radeon_connector->edid) {
DRM_ERROR("%s: probed a monitor but no|invalid EDID\n",
@@ -926,7 +916,7 @@ static void radeon_dp_connector_destroy(struct drm_connector *connector)
if (radeon_connector->edid)
kfree(radeon_connector->edid);
if (radeon_dig_connector->dp_i2c_bus)
- radeon_i2c_destroy(radeon_dig_connector->dp_i2c_bus);
+ radeon_i2c_destroy_dp(radeon_dig_connector->dp_i2c_bus);
kfree(radeon_connector->con_priv);
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
@@ -961,12 +951,10 @@ static enum drm_connector_status radeon_dp_detect(struct drm_connector *connecto
ret = connector_status_connected;
}
} else {
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
if (radeon_ddc_probe(radeon_connector)) {
radeon_dig_connector->dp_sink_type = sink_type;
ret = connector_status_connected;
}
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
}
return ret;
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 91d72b7..9bfbe0d 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -357,9 +357,7 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
if (!radeon_connector->ddc_bus)
return -1;
if (!radeon_connector->edid) {
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
}
if (radeon_connector->edid) {
@@ -379,9 +377,7 @@ static int radeon_ddc_dump(struct drm_connector *connector)
if (!radeon_connector->ddc_bus)
return -1;
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 1);
edid = drm_get_edid(connector, &radeon_connector->ddc_bus->adapter);
- radeon_i2c_do_lock(radeon_connector->ddc_bus, 0);
if (edid) {
kfree(edid);
}
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c
index da3da1e..75b090f 100644
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -59,7 +59,7 @@ bool radeon_ddc_probe(struct radeon_connector *radeon_connector)
}
-void radeon_i2c_do_lock(struct radeon_i2c_chan *i2c, int lock_state)
+static void radeon_i2c_do_lock(struct radeon_i2c_chan *i2c, int lock_state)
{
struct radeon_device *rdev = i2c->dev->dev_private;
struct radeon_i2c_bus_rec *rec = &i2c->rec;
@@ -168,6 +168,32 @@ static void set_data(void *i2c_priv, int data)
WREG32(rec->en_data_reg, val);
}
+static int radeon_i2c_xfer(struct i2c_adapter *i2c_adap,
+ struct i2c_msg *msgs, int num)
+{
+ struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap);
+ int ret;
+
+ radeon_i2c_do_lock(i2c, 1);
+ if (i2c_transfer(&i2c->algo.radeon.bit_adapter, msgs, num) == num)
+ ret = num;
+ else
+ ret = -1;
+ radeon_i2c_do_lock(i2c, 0);
+
+ return ret;
+}
+
+static u32 radeon_i2c_func(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm radeon_i2c_algo = {
+ .master_xfer = radeon_i2c_xfer,
+ .functionality = radeon_i2c_func,
+};
+
struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
struct radeon_i2c_bus_rec *rec,
const char *name)
@@ -179,21 +205,34 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
if (i2c == NULL)
return NULL;
- i2c->adapter.owner = THIS_MODULE;
i2c->dev = dev;
- i2c_set_adapdata(&i2c->adapter, i2c);
- i2c->adapter.algo_data = &i2c->algo.bit;
- i2c->algo.bit.setsda = set_data;
- i2c->algo.bit.setscl = set_clock;
- i2c->algo.bit.getsda = get_data;
- i2c->algo.bit.getscl = get_clock;
- i2c->algo.bit.udelay = 20;
+ i2c->rec = *rec;
+ /* set the internal bit adapter */
+ i2c->algo.radeon.bit_adapter.owner = THIS_MODULE;
+ i2c_set_adapdata(&i2c->algo.radeon.bit_adapter, i2c);
+ sprintf(i2c->algo.radeon.bit_adapter.name, "Radeon internal i2c bit bus %s", name);
+ i2c->algo.radeon.bit_adapter.algo_data = &i2c->algo.radeon.bit_data;
+ i2c->algo.radeon.bit_data.setsda = set_data;
+ i2c->algo.radeon.bit_data.setscl = set_clock;
+ i2c->algo.radeon.bit_data.getsda = get_data;
+ i2c->algo.radeon.bit_data.getscl = get_clock;
+ i2c->algo.radeon.bit_data.udelay = 20;
/* vesa says 2.2 ms is enough, 1 jiffy doesn't seem to always
* make this, 2 jiffies is a lot more reliable */
- i2c->algo.bit.timeout = 2;
- i2c->algo.bit.data = i2c;
- i2c->rec = *rec;
- ret = i2c_bit_add_bus(&i2c->adapter);
+ i2c->algo.radeon.bit_data.timeout = 2;
+ i2c->algo.radeon.bit_data.data = i2c;
+ ret = i2c_bit_add_bus(&i2c->algo.radeon.bit_adapter);
+ if (ret) {
+ DRM_INFO("Failed to register internal bit i2c %s\n", name);
+ goto out_free;
+ }
+ /* set the radeon i2c adapter */
+ i2c->adapter.owner = THIS_MODULE;
+ i2c_set_adapdata(&i2c->adapter, i2c);
+ sprintf(i2c->adapter.name, "Radeon i2c %s", name);
+ i2c->adapter.algo_data = &i2c->algo.radeon;
+ i2c->adapter.algo = &radeon_i2c_algo;
+ ret = i2c_add_adapter(&i2c->adapter);
if (ret) {
DRM_INFO("Failed to register i2c %s\n", name);
goto out_free;
@@ -237,11 +276,19 @@ out_free:
}
-
void radeon_i2c_destroy(struct radeon_i2c_chan *i2c)
{
if (!i2c)
return;
+ i2c_del_adapter(&i2c->algo.radeon.bit_adapter);
+ i2c_del_adapter(&i2c->adapter);
+ kfree(i2c);
+}
+
+void radeon_i2c_destroy_dp(struct radeon_i2c_chan *i2c)
+{
+ if (!i2c)
+ return;
i2c_del_adapter(&i2c->adapter);
kfree(i2c);
@@ -252,10 +299,10 @@ struct drm_encoder *radeon_best_encoder(struct drm_connector *connector)
return NULL;
}
-void radeon_i2c_sw_get_byte(struct radeon_i2c_chan *i2c_bus,
- u8 slave_addr,
- u8 addr,
- u8 *val)
+void radeon_i2c_get_byte(struct radeon_i2c_chan *i2c_bus,
+ u8 slave_addr,
+ u8 addr,
+ u8 *val)
{
u8 out_buf[2];
u8 in_buf[2];
@@ -286,10 +333,10 @@ void radeon_i2c_sw_get_byte(struct radeon_i2c_chan *i2c_bus,
}
}
-void radeon_i2c_sw_put_byte(struct radeon_i2c_chan *i2c_bus,
- u8 slave_addr,
- u8 addr,
- u8 val)
+void radeon_i2c_put_byte(struct radeon_i2c_chan *i2c_bus,
+ u8 slave_addr,
+ u8 addr,
+ u8 val)
{
uint8_t out_buf[2];
struct i2c_msg msg = {
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 402369d..1d3b1f6 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -172,12 +172,17 @@ struct radeon_pll {
uint32_t best_vco;
};
+struct i2c_algo_radeon_data {
+ struct i2c_adapter bit_adapter;
+ struct i2c_algo_bit_data bit_data;
+};
+
struct radeon_i2c_chan {
struct i2c_adapter adapter;
struct drm_device *dev;
union {
struct i2c_algo_dp_aux_data dp;
- struct i2c_algo_bit_data bit;
+ struct i2c_algo_radeon_data radeon;
} algo;
struct radeon_i2c_bus_rec rec;
};
@@ -424,14 +429,15 @@ extern struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
struct radeon_i2c_bus_rec *rec,
const char *name);
extern void radeon_i2c_destroy(struct radeon_i2c_chan *i2c);
-extern void radeon_i2c_sw_get_byte(struct radeon_i2c_chan *i2c_bus,
- u8 slave_addr,
- u8 addr,
- u8 *val);
-extern void radeon_i2c_sw_put_byte(struct radeon_i2c_chan *i2c,
- u8 slave_addr,
- u8 addr,
- u8 val);
+extern void radeon_i2c_destroy_dp(struct radeon_i2c_chan *i2c);
+extern void radeon_i2c_get_byte(struct radeon_i2c_chan *i2c_bus,
+ u8 slave_addr,
+ u8 addr,
+ u8 *val);
+extern void radeon_i2c_put_byte(struct radeon_i2c_chan *i2c,
+ u8 slave_addr,
+ u8 addr,
+ u8 val);
extern bool radeon_ddc_probe(struct radeon_connector *radeon_connector);
extern int radeon_ddc_get_modes(struct radeon_connector *radeon_connector);
@@ -547,7 +553,6 @@ void radeon_atombios_init_crtc(struct drm_device *dev,
struct radeon_crtc *radeon_crtc);
void radeon_legacy_init_crtc(struct drm_device *dev,
struct radeon_crtc *radeon_crtc);
-extern void radeon_i2c_do_lock(struct radeon_i2c_chan *i2c, int lock_state);
void radeon_get_clock_info(struct drm_device *dev);
--
1.5.6.3
From d4dc8e393ffd29d132e0331f216fd51e25c1f768 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeuc...@gmail.com>
Date: Wed, 23 Dec 2009 03:23:21 -0500
Subject: [PATCH] drm/radeon/kms: add support for hw i2c on r1xx-r5xx
wire hw i2c support into radeon i2c algo.
Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
drivers/gpu/drm/radeon/r500_reg.h | 100 ++++----
drivers/gpu/drm/radeon/radeon_combios.c | 5 +-
drivers/gpu/drm/radeon/radeon_i2c.c | 415 ++++++++++++++++++++++++++++++-
drivers/gpu/drm/radeon/radeon_reg.h | 42 ++--
4 files changed, 491 insertions(+), 71 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r500_reg.h b/drivers/gpu/drm/radeon/r500_reg.h
index 74ad89b..0cf2ad2 100644
--- a/drivers/gpu/drm/radeon/r500_reg.h
+++ b/drivers/gpu/drm/radeon/r500_reg.h
@@ -717,54 +717,62 @@
#define AVIVO_DVOA_BIT_DEPTH_CONTROL 0x7988
#define AVIVO_DC_GPIO_HPD_A 0x7e94
-
-#define AVIVO_GPIO_0 0x7e30
-#define AVIVO_GPIO_1 0x7e40
-#define AVIVO_GPIO_2 0x7e50
-#define AVIVO_GPIO_3 0x7e60
-
#define AVIVO_DC_GPIO_HPD_Y 0x7e9c
-#define AVIVO_I2C_STATUS 0x7d30
-# define AVIVO_I2C_STATUS_DONE (1 << 0)
-# define AVIVO_I2C_STATUS_NACK (1 << 1)
-# define AVIVO_I2C_STATUS_HALT (1 << 2)
-# define AVIVO_I2C_STATUS_GO (1 << 3)
-# define AVIVO_I2C_STATUS_MASK 0x7
-/* If radeon_mm_i2c is to be believed, this is HALT, NACK, and maybe
- * DONE? */
-# define AVIVO_I2C_STATUS_CMD_RESET 0x7
-# define AVIVO_I2C_STATUS_CMD_WAIT (1 << 3)
-#define AVIVO_I2C_STOP 0x7d34
-#define AVIVO_I2C_START_CNTL 0x7d38
-# define AVIVO_I2C_START (1 << 8)
-# define AVIVO_I2C_CONNECTOR0 (0 << 16)
-# define AVIVO_I2C_CONNECTOR1 (1 << 16)
-#define R520_I2C_START (1<<0)
-#define R520_I2C_STOP (1<<1)
-#define R520_I2C_RX (1<<2)
-#define R520_I2C_EN (1<<8)
-#define R520_I2C_DDC1 (0<<16)
-#define R520_I2C_DDC2 (1<<16)
-#define R520_I2C_DDC3 (2<<16)
-#define R520_I2C_DDC_MASK (3<<16)
-#define AVIVO_I2C_CONTROL2 0x7d3c
-# define AVIVO_I2C_7D3C_SIZE_SHIFT 8
-# define AVIVO_I2C_7D3C_SIZE_MASK (0xf << 8)
-#define AVIVO_I2C_CONTROL3 0x7d40
-/* Reading is done 4 bytes at a time: read the bottom 8 bits from
- * 7d44, four times in a row.
- * Writing is a little more complex. First write DATA with
- * 0xnnnnnnzz, then 0xnnnnnnyy, where nnnnnn is some non-deterministic
- * magic number, zz is, I think, the slave address, and yy is the byte
- * you want to write. */
-#define AVIVO_I2C_DATA 0x7d44
-#define R520_I2C_ADDR_COUNT_MASK (0x7)
-#define R520_I2C_DATA_COUNT_SHIFT (8)
-#define R520_I2C_DATA_COUNT_MASK (0xF00)
-#define AVIVO_I2C_CNTL 0x7d50
-# define AVIVO_I2C_EN (1 << 0)
-# define AVIVO_I2C_RESET (1 << 8)
+#define AVIVO_DC_I2C_STATUS1 0x7d30
+# define AVIVO_DC_I2C_DONE (1 << 0)
+# define AVIVO_DC_I2C_NACK (1 << 1)
+# define AVIVO_DC_I2C_HALT (1 << 2)
+# define AVIVO_DC_I2C_GO (1 << 3)
+#define AVIVO_DC_I2C_RESET 0x7d34
+# define AVIVO_DC_I2C_SOFT_RESET (1 << 0)
+# define AVIVO_DC_I2C_ABORT (1 << 8)
+#define AVIVO_DC_I2C_CONTROL1 0x7d38
+# define AVIVO_DC_I2C_START (1 << 0)
+# define AVIVO_DC_I2C_STOP (1 << 1)
+# define AVIVO_DC_I2C_RECEIVE (1 << 2)
+# define AVIVO_DC_I2C_EN (1 << 8)
+# define AVIVO_DC_I2C_PIN_SELECT(x) ((x) << 16)
+# define AVIVO_SEL_DDC1 0
+# define AVIVO_SEL_DDC2 1
+# define AVIVO_SEL_DDC3 2
+#define AVIVO_DC_I2C_CONTROL2 0x7d3c
+# define AVIVO_DC_I2C_ADDR_COUNT(x) ((x) << 0)
+# define AVIVO_DC_I2C_DATA_COUNT(x) ((x) << 8)
+#define AVIVO_DC_I2C_CONTROL3 0x7d40
+# define AVIVO_DC_I2C_DATA_DRIVE_EN (1 << 0)
+# define AVIVO_DC_I2C_DATA_DRIVE_SEL (1 << 1)
+# define AVIVO_DC_I2C_CLK_DRIVE_EN (1 << 7)
+# define AVIVO_DC_I2C_RD_INTRA_BYTE_DELAY(x) ((x) << 8)
+# define AVIVO_DC_I2C_WR_INTRA_BYTE_DELAY(x) ((x) << 16)
+# define AVIVO_DC_I2C_TIME_LIMIT(x) ((x) << 24)
+#define AVIVO_DC_I2C_DATA 0x7d44
+#define AVIVO_DC_I2C_INTERRUPT_CONTROL 0x7d48
+# define AVIVO_DC_I2C_INTERRUPT_STATUS (1 << 0)
+# define AVIVO_DC_I2C_INTERRUPT_AK (1 << 8)
+# define AVIVO_DC_I2C_INTERRUPT_ENABLE (1 << 16)
+#define AVIVO_DC_I2C_ARBITRATION 0x7d50
+# define AVIVO_DC_I2C_SW_WANTS_TO_USE_I2C (1 << 0)
+# define AVIVO_DC_I2C_SW_CAN_USE_I2C (1 << 1)
+# define AVIVO_DC_I2C_SW_DONE_USING_I2C (1 << 8)
+# define AVIVO_DC_I2C_HW_NEEDS_I2C (1 << 9)
+# define AVIVO_DC_I2C_ABORT_HDCP_I2C (1 << 16)
+# define AVIVO_DC_I2C_HW_USING_I2C (1 << 17)
+
+#define AVIVO_DC_GPIO_DDC1_MASK 0x7e40
+#define AVIVO_DC_GPIO_DDC1_A 0x7e44
+#define AVIVO_DC_GPIO_DDC1_EN 0x7e48
+#define AVIVO_DC_GPIO_DDC1_Y 0x7e4c
+
+#define AVIVO_DC_GPIO_DDC2_MASK 0x7e50
+#define AVIVO_DC_GPIO_DDC2_A 0x7e54
+#define AVIVO_DC_GPIO_DDC2_EN 0x7e58
+#define AVIVO_DC_GPIO_DDC2_Y 0x7e5c
+
+#define AVIVO_DC_GPIO_DDC3_MASK 0x7e60
+#define AVIVO_DC_GPIO_DDC3_A 0x7e64
+#define AVIVO_DC_GPIO_DDC3_EN 0x7e68
+#define AVIVO_DC_GPIO_DDC3_Y 0x7e6c
#define AVIVO_DISP_INTERRUPT_STATUS 0x7edc
# define AVIVO_D1_VBLANK_INTERRUPT (1 << 4)
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 47b7d92..9212210 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -1205,7 +1205,10 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder
tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
break;
case DDC_LCD: /* MM i2c */
- DRM_ERROR("MM i2c requires hw i2c engine\n");
+ i2c_bus.valid = true;
+ i2c_bus.hw_capable = true;
+ i2c_bus.mm_i2c = true;
+ tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
break;
default:
DRM_ERROR("Unsupported gpio %d\n", gpio);
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c
index 75b090f..14a68b4 100644
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -26,6 +26,7 @@
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon.h"
+#include "atom.h"
/**
* radeon_ddc_probe
@@ -168,8 +169,331 @@ static void set_data(void *i2c_priv, int data)
WREG32(rec->en_data_reg, val);
}
-static int radeon_i2c_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg *msgs, int num)
+/* hw i2c engine for r1xx-4xx hardware
+ * hw can buffer up to 15 bytes
+ */
+static int r100_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
+ struct i2c_msg *msgs, int num)
+{
+ struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap);
+ struct radeon_device *rdev = i2c->dev->dev_private;
+ struct radeon_i2c_bus_rec *rec = &i2c->rec;
+ struct i2c_msg *p;
+ int i, j, k, ret = num;
+ /* XXX: use get_engine_clock() to get the current sclk */
+ u32 prescale = (((rdev->clock.default_sclk * 10)/(4 * 128 * 100) + 1) << 8) + 128;
+ u32 i2c_cntl_0, i2c_cntl_1, i2c_data;
+ u32 tmp, reg;
+
+ reg = ((prescale << RADEON_I2C_PRESCALE_SHIFT) |
+ RADEON_I2C_START |
+ RADEON_I2C_STOP |
+ RADEON_I2C_GO);
+
+ if (rdev->is_atom_bios) {
+ tmp = RREG32(RADEON_BIOS_6_SCRATCH);
+ WREG32(RADEON_BIOS_6_SCRATCH, tmp | ATOM_S6_HW_I2C_BUSY_STATE);
+ }
+
+ if (rec->mm_i2c) {
+ i2c_cntl_0 = RADEON_I2C_CNTL_0;
+ i2c_cntl_1 = RADEON_I2C_CNTL_1;
+ i2c_data = RADEON_I2C_DATA;
+ } else {
+ i2c_cntl_0 = RADEON_DVI_I2C_CNTL_0;
+ i2c_cntl_1 = RADEON_DVI_I2C_CNTL_1;
+ i2c_data = RADEON_DVI_I2C_DATA;
+
+ switch (rec->mask_clk_reg) {
+ case RADEON_GPIO_VGA_DDC:
+ reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC1);
+ break;
+ case RADEON_GPIO_DVI_DDC:
+ reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC2);
+ break;
+ case RADEON_GPIO_MONID:
+ reg |= R200_DVI_I2C_PIN_SEL(R200_SEL_DDC3);
+ break;
+ default:
+ DRM_ERROR("gpio not supported with hw i2c\n");
+ ret = -1;
+ goto done;
+ }
+ }
+
+ for (i = 0; i < num; i++) {
+ p = &msgs[i];
+ for (j = 0; j < p->len; j++) {
+ if (p->flags & I2C_M_RD) {
+ WREG32(i2c_cntl_0, (RADEON_I2C_DONE |
+ RADEON_I2C_NACK |
+ RADEON_I2C_HALT |
+ RADEON_I2C_SOFT_RST));
+ WREG32(i2c_data, ((p->addr << 1) & 0xff) | 0x1);
+ WREG32(i2c_cntl_1, ((1 << RADEON_I2C_DATA_COUNT_SHIFT) |
+ (1 << RADEON_I2C_ADDR_COUNT_SHIFT) |
+ RADEON_I2C_EN |
+ (48 << RADEON_I2C_TIME_LIMIT_SHIFT)));
+ WREG32(i2c_cntl_0, reg | RADEON_I2C_RECEIVE);
+ for (k = 0; k < 32; k++) {
+ udelay(10);
+ tmp = RREG32(i2c_cntl_0);
+ if (tmp & RADEON_I2C_GO)
+ continue;
+ tmp = RREG32(i2c_cntl_0);
+ if (tmp & RADEON_I2C_DONE)
+ break;
+ else {
+ DRM_DEBUG("i2c read error 0x%08x\n", tmp);
+ ret = -1;
+ goto done;
+ }
+ }
+ p->buf[j] = RREG32(i2c_data) & 0xff;
+ } else {
+ WREG32(i2c_cntl_0, (RADEON_I2C_DONE |
+ RADEON_I2C_NACK |
+ RADEON_I2C_HALT |
+ RADEON_I2C_SOFT_RST));
+ WREG32(i2c_data, (p->addr << 1) & 0xff);
+ WREG32(i2c_data, p->buf[j]);
+ WREG32(i2c_cntl_1, ((1 << RADEON_I2C_DATA_COUNT_SHIFT) |
+ (1 << RADEON_I2C_ADDR_COUNT_SHIFT) |
+ RADEON_I2C_EN |
+ (48 << RADEON_I2C_TIME_LIMIT_SHIFT)));
+ WREG32(i2c_cntl_0, reg);
+ for (k = 0; k < 32; k++) {
+ udelay(10);
+ tmp = RREG32(i2c_cntl_0);
+ if (tmp & RADEON_I2C_GO)
+ continue;
+ tmp = RREG32(i2c_cntl_0);
+ if (tmp & RADEON_I2C_DONE)
+ break;
+ else {
+ DRM_DEBUG("i2c write error 0x%08x\n", tmp);
+ ret = -1;
+ goto done;
+ }
+ }
+ }
+ }
+ }
+
+done:
+ WREG32(i2c_cntl_0, 0);
+ WREG32(i2c_cntl_1, 0);
+ WREG32(i2c_cntl_0, (RADEON_I2C_DONE |
+ RADEON_I2C_NACK |
+ RADEON_I2C_HALT |
+ RADEON_I2C_SOFT_RST));
+
+ if (rdev->is_atom_bios) {
+ tmp = RREG32(RADEON_BIOS_6_SCRATCH);
+ tmp &= ~ATOM_S6_HW_I2C_BUSY_STATE;
+ WREG32(RADEON_BIOS_6_SCRATCH, tmp);
+ }
+ return ret;
+}
+
+/* hw i2c engine for r5xx hardware
+ * hw can buffer up to 15 bytes
+ */
+static int r500_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
+ struct i2c_msg *msgs, int num)
+{
+ struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap);
+ struct radeon_device *rdev = i2c->dev->dev_private;
+ struct radeon_i2c_bus_rec *rec = &i2c->rec;
+ struct i2c_msg *p;
+ int i2c_clock = 50;
+ int i, j, remaining, current_count, buffer_offset, ret = num;
+ /* XXX: use get_engine_clock() to get the current sclk */
+ u32 prescale;
+ u32 tmp, reg;
+ u32 saved1, saved2;
+
+ /* clear gpio mask bits */
+ tmp = RREG32(rec->mask_clk_reg);
+ tmp &= ~rec->mask_clk_mask;
+ WREG32(rec->mask_clk_reg, tmp);
+ tmp = RREG32(rec->mask_clk_reg);
+
+ tmp = RREG32(rec->mask_data_reg);
+ tmp &= ~rec->mask_data_mask;
+ WREG32(rec->mask_data_reg, tmp);
+ tmp = RREG32(rec->mask_data_reg);
+
+ /* clear pin values */
+ tmp = RREG32(rec->a_clk_reg);
+ tmp &= ~rec->a_clk_mask;
+ WREG32(rec->a_clk_reg, tmp);
+ tmp = RREG32(rec->a_clk_reg);
+
+ tmp = RREG32(rec->a_data_reg);
+ tmp &= ~rec->a_data_mask;
+ WREG32(rec->a_data_reg, tmp);
+ tmp = RREG32(rec->a_data_reg);
+
+ /* set the pins to input */
+ tmp = RREG32(rec->en_clk_reg);
+ tmp &= ~rec->en_clk_mask;
+ WREG32(rec->en_clk_reg, tmp);
+ tmp = RREG32(rec->en_clk_reg);
+
+ tmp = RREG32(rec->en_data_reg);
+ tmp &= ~rec->en_data_mask;
+ WREG32(rec->en_data_reg, tmp);
+ tmp = RREG32(rec->en_data_reg);
+
+ /* */
+ tmp = RREG32(RADEON_BIOS_6_SCRATCH);
+ WREG32(RADEON_BIOS_6_SCRATCH, tmp | ATOM_S6_HW_I2C_BUSY_STATE);
+ saved1 = RREG32(AVIVO_DC_I2C_CONTROL1);
+ saved2 = RREG32(0x494);
+ WREG32(0x494, saved2 | 0x1);
+
+ WREG32(AVIVO_DC_I2C_ARBITRATION, AVIVO_DC_I2C_SW_WANTS_TO_USE_I2C);
+ for (i= 0; i < 50; i++) {
+ udelay(1);
+ if (RREG32(AVIVO_DC_I2C_ARBITRATION) & AVIVO_DC_I2C_SW_CAN_USE_I2C)
+ break;
+ }
+ if (i == 50) {
+ DRM_ERROR("failed to get i2c bus\n");
+ ret = -1;
+ goto done;
+ }
+
+
+ if (rdev->family == CHIP_R520)
+ prescale = (127 << 8) + ((rdev->clock.default_sclk * 10) / (4 * 127 * i2c_clock));
+ else
+ prescale = (((rdev->clock.default_sclk * 10)/(4 * 128 * 100) + 1) << 8) + 128;
+
+ reg = AVIVO_DC_I2C_START | AVIVO_DC_I2C_STOP | AVIVO_DC_I2C_EN;
+ switch (rec->mask_clk_reg) {
+ case AVIVO_DC_GPIO_DDC1_MASK:
+ reg |= AVIVO_DC_I2C_PIN_SELECT(AVIVO_SEL_DDC1);
+ break;
+ case AVIVO_DC_GPIO_DDC2_MASK:
+ reg |= AVIVO_DC_I2C_PIN_SELECT(AVIVO_SEL_DDC2);
+ break;
+ case AVIVO_DC_GPIO_DDC3_MASK:
+ reg |= AVIVO_DC_I2C_PIN_SELECT(AVIVO_SEL_DDC3);
+ break;
+ default:
+ DRM_ERROR("gpio not supported with hw i2c\n");
+ ret = -1;
+ goto done;
+ }
+
+ for (i = 0; i < num; i++) {
+ p = &msgs[i];
+ remaining = p->len;
+ buffer_offset = 0;
+ if (p->flags & I2C_M_RD) {
+ while (remaining) {
+ if (remaining > 15)
+ current_count = 15;
+ else
+ current_count = remaining;
+ WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE |
+ AVIVO_DC_I2C_NACK |
+ AVIVO_DC_I2C_HALT));
+ WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET);
+ udelay(1);
+ WREG32(AVIVO_DC_I2C_RESET, 0);
+
+ WREG32(AVIVO_DC_I2C_DATA, ((p->addr << 1) & 0xff) | 0x1);
+ WREG32(AVIVO_DC_I2C_CONTROL3, AVIVO_DC_I2C_TIME_LIMIT(48));
+ WREG32(AVIVO_DC_I2C_CONTROL2, (AVIVO_DC_I2C_ADDR_COUNT(1) |
+ AVIVO_DC_I2C_DATA_COUNT(current_count) |
+ (prescale << 16)));
+ WREG32(AVIVO_DC_I2C_CONTROL1, reg | AVIVO_DC_I2C_RECEIVE);
+ WREG32(AVIVO_DC_I2C_STATUS1, AVIVO_DC_I2C_GO);
+ for (j = 0; j < 200; j++) {
+ udelay(50);
+ tmp = RREG32(AVIVO_DC_I2C_STATUS1);
+ if (tmp & AVIVO_DC_I2C_GO)
+ continue;
+ tmp = RREG32(AVIVO_DC_I2C_STATUS1);
+ if (tmp & AVIVO_DC_I2C_DONE)
+ break;
+ else {
+ DRM_DEBUG("i2c read error 0x%08x\n", tmp);
+ ret = -1;
+ goto done;
+ }
+ }
+ for (j = 0; j < current_count; j++)
+ p->buf[buffer_offset + j] = RREG32(AVIVO_DC_I2C_DATA) & 0xff;
+ remaining -= current_count;
+ buffer_offset += current_count;
+ }
+ } else {
+ while (remaining) {
+ if (remaining > 15)
+ current_count = 15;
+ else
+ current_count = remaining;
+ WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE |
+ AVIVO_DC_I2C_NACK |
+ AVIVO_DC_I2C_HALT));
+ WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET);
+ udelay(1);
+ WREG32(AVIVO_DC_I2C_RESET, 0);
+
+ WREG32(AVIVO_DC_I2C_DATA, (p->addr << 1) & 0xff);
+ for (j = 0; j < current_count; j++)
+ WREG32(AVIVO_DC_I2C_DATA, p->buf[buffer_offset + j]);
+
+ WREG32(AVIVO_DC_I2C_CONTROL3, AVIVO_DC_I2C_TIME_LIMIT(48));
+ WREG32(AVIVO_DC_I2C_CONTROL2, (AVIVO_DC_I2C_ADDR_COUNT(1) |
+ AVIVO_DC_I2C_DATA_COUNT(current_count) |
+ (prescale << 16)));
+ WREG32(AVIVO_DC_I2C_CONTROL1, reg);
+ WREG32(AVIVO_DC_I2C_STATUS1, AVIVO_DC_I2C_GO);
+ for (j = 0; j < 200; j++) {
+ udelay(50);
+ tmp = RREG32(AVIVO_DC_I2C_STATUS1);
+ if (tmp & AVIVO_DC_I2C_GO)
+ continue;
+ tmp = RREG32(AVIVO_DC_I2C_STATUS1);
+ if (tmp & AVIVO_DC_I2C_DONE)
+ break;
+ else {
+ DRM_DEBUG("i2c write error 0x%08x\n", tmp);
+ ret = -1;
+ goto done;
+ }
+ }
+ remaining -= current_count;
+ buffer_offset += current_count;
+ }
+ }
+ }
+
+done:
+ WREG32(AVIVO_DC_I2C_STATUS1, (AVIVO_DC_I2C_DONE |
+ AVIVO_DC_I2C_NACK |
+ AVIVO_DC_I2C_HALT));
+ WREG32(AVIVO_DC_I2C_RESET, AVIVO_DC_I2C_SOFT_RESET);
+ udelay(1);
+ WREG32(AVIVO_DC_I2C_RESET, 0);
+
+ WREG32(AVIVO_DC_I2C_ARBITRATION, AVIVO_DC_I2C_SW_DONE_USING_I2C);
+ WREG32(AVIVO_DC_I2C_CONTROL1, saved1);
+ WREG32(0x494, saved2);
+ tmp = RREG32(RADEON_BIOS_6_SCRATCH);
+ tmp &= ~ATOM_S6_HW_I2C_BUSY_STATE;
+ WREG32(RADEON_BIOS_6_SCRATCH, tmp);
+
+ return ret;
+}
+
+static int radeon_sw_i2c_xfer(struct i2c_adapter *i2c_adap,
+ struct i2c_msg *msgs, int num)
{
struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap);
int ret;
@@ -184,6 +508,85 @@ static int radeon_i2c_xfer(struct i2c_adapter *i2c_adap,
return ret;
}
+static int radeon_i2c_xfer(struct i2c_adapter *i2c_adap,
+ struct i2c_msg *msgs, int num)
+{
+ struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap);
+ struct radeon_device *rdev = i2c->dev->dev_private;
+ struct radeon_i2c_bus_rec *rec = &i2c->rec;
+ int ret;
+
+ switch (rdev->family) {
+ case CHIP_R100:
+ case CHIP_RV100:
+ case CHIP_RS100:
+ case CHIP_RV200:
+ case CHIP_RS200:
+ case CHIP_R200:
+ case CHIP_RV250:
+ case CHIP_RS300:
+ case CHIP_RV280:
+ case CHIP_R300:
+ case CHIP_R350:
+ case CHIP_RV350:
+ case CHIP_RV380:
+ case CHIP_R420:
+ case CHIP_R423:
+ case CHIP_RV410:
+ case CHIP_RS400:
+ case CHIP_RS480:
+ if (rec->hw_capable)
+ ret = r100_hw_i2c_xfer(i2c_adap, msgs, num);
+ else
+ ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num);
+ break;
+ case CHIP_RS600:
+ case CHIP_RS690:
+ case CHIP_RS740:
+ /* XXX fill in hw i2c implementation */
+ ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num);
+ break;
+ case CHIP_RV515:
+ case CHIP_R520:
+ case CHIP_RV530:
+ case CHIP_RV560:
+ case CHIP_RV570:
+ case CHIP_R580:
+ if (rec->hw_capable) {
+ if (rec->mm_i2c)
+ ret = r100_hw_i2c_xfer(i2c_adap, msgs, num);
+ else
+ ret = r500_hw_i2c_xfer(i2c_adap, msgs, num);
+ } else
+ ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num);
+ break;
+ case CHIP_R600:
+ case CHIP_RV610:
+ case CHIP_RV630:
+ case CHIP_RV670:
+ /* XXX fill in hw i2c implementation */
+ ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num);
+ break;
+ case CHIP_RV620:
+ case CHIP_RV635:
+ case CHIP_RS780:
+ case CHIP_RS880:
+ case CHIP_RV770:
+ case CHIP_RV730:
+ case CHIP_RV710:
+ case CHIP_RV740:
+ /* XXX fill in hw i2c implementation */
+ ret = radeon_sw_i2c_xfer(i2c_adap, msgs, num);
+ break;
+ default:
+ DRM_ERROR("i2c: unhandled radeon chip\n");
+ ret = -1;
+ break;
+ }
+
+ return ret;
+}
+
static u32 radeon_i2c_func(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
@@ -205,8 +608,6 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
if (i2c == NULL)
return NULL;
- i2c->dev = dev;
- i2c->rec = *rec;
/* set the internal bit adapter */
i2c->algo.radeon.bit_adapter.owner = THIS_MODULE;
i2c_set_adapdata(&i2c->algo.radeon.bit_adapter, i2c);
@@ -223,10 +624,12 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
i2c->algo.radeon.bit_data.data = i2c;
ret = i2c_bit_add_bus(&i2c->algo.radeon.bit_adapter);
if (ret) {
- DRM_INFO("Failed to register internal bit i2c %s\n", name);
+ DRM_ERROR("Failed to register internal bit i2c %s\n", name);
goto out_free;
}
/* set the radeon i2c adapter */
+ i2c->dev = dev;
+ i2c->rec = *rec;
i2c->adapter.owner = THIS_MODULE;
i2c_set_adapdata(&i2c->adapter, i2c);
sprintf(i2c->adapter.name, "Radeon i2c %s", name);
@@ -234,7 +637,7 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
i2c->adapter.algo = &radeon_i2c_algo;
ret = i2c_add_adapter(&i2c->adapter);
if (ret) {
- DRM_INFO("Failed to register i2c %s\n", name);
+ DRM_ERROR("Failed to register i2c %s\n", name);
goto out_free;
}
diff --git a/drivers/gpu/drm/radeon/radeon_reg.h b/drivers/gpu/drm/radeon/radeon_reg.h
index 6d0a009..e293f2b 100644
--- a/drivers/gpu/drm/radeon/radeon_reg.h
+++ b/drivers/gpu/drm/radeon/radeon_reg.h
@@ -1060,25 +1060,25 @@
/* Multimedia I2C bus */
#define RADEON_I2C_CNTL_0 0x0090
-#define RADEON_I2C_DONE (1 << 0)
-#define RADEON_I2C_NACK (1 << 1)
-#define RADEON_I2C_HALT (1 << 2)
-#define RADEON_I2C_SOFT_RST (1 << 5)
-#define RADEON_I2C_DRIVE_EN (1 << 6)
-#define RADEON_I2C_DRIVE_SEL (1 << 7)
-#define RADEON_I2C_START (1 << 8)
-#define RADEON_I2C_STOP (1 << 9)
-#define RADEON_I2C_RECEIVE (1 << 10)
-#define RADEON_I2C_ABORT (1 << 11)
-#define RADEON_I2C_GO (1 << 12)
-#define RADEON_I2C_PRESCALE_SHIFT 16
+# define RADEON_I2C_DONE (1 << 0)
+# define RADEON_I2C_NACK (1 << 1)
+# define RADEON_I2C_HALT (1 << 2)
+# define RADEON_I2C_SOFT_RST (1 << 5)
+# define RADEON_I2C_DRIVE_EN (1 << 6)
+# define RADEON_I2C_DRIVE_SEL (1 << 7)
+# define RADEON_I2C_START (1 << 8)
+# define RADEON_I2C_STOP (1 << 9)
+# define RADEON_I2C_RECEIVE (1 << 10)
+# define RADEON_I2C_ABORT (1 << 11)
+# define RADEON_I2C_GO (1 << 12)
+# define RADEON_I2C_PRESCALE_SHIFT 16
#define RADEON_I2C_CNTL_1 0x0094
-#define RADEON_I2C_DATA_COUNT_SHIFT 0
-#define RADEON_I2C_ADDR_COUNT_SHIFT 4
-#define RADEON_I2C_INTRA_BYTE_DELAY_SHIFT 8
-#define RADEON_I2C_SEL (1 << 16)
-#define RADEON_I2C_EN (1 << 17)
-#define RADEON_I2C_TIME_LIMIT_SHIFT 24
+# define RADEON_I2C_DATA_COUNT_SHIFT 0
+# define RADEON_I2C_ADDR_COUNT_SHIFT 4
+# define RADEON_I2C_INTRA_BYTE_DELAY_SHIFT 8
+# define RADEON_I2C_SEL (1 << 16)
+# define RADEON_I2C_EN (1 << 17)
+# define RADEON_I2C_TIME_LIMIT_SHIFT 24
#define RADEON_I2C_DATA 0x0098
#define RADEON_DVI_I2C_CNTL_0 0x02e0
@@ -1086,6 +1086,12 @@
# define R200_SEL_DDC1 0 /* 0x60 - VGA_DDC */
# define R200_SEL_DDC2 1 /* 0x64 - DVI_DDC */
# define R200_SEL_DDC3 2 /* 0x68 - MONID_DDC */
+# define RADEON_SW_WANTS_TO_USE_DVI_I2C (1 << 13)
+# define RADEON_SW_CAN_USE_DVI_I2C (1 << 13)
+# define RADEON_SW_DONE_USING_DVI_I2C (1 << 14)
+# define RADEON_HW_NEEDS_DVI_I2C (1 << 14)
+# define RADEON_ABORT_HW_DVI_I2C (1 << 15)
+# define RADEON_HW_USING_DVI_I2C (1 << 15)
#define RADEON_DVI_I2C_CNTL_1 0x02e4
#define RADEON_DVI_I2C_DATA 0x02e8
--
1.5.6.3
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