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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-08 18:20:47 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-08 18:20:47 (GMT) |
commit | 789505b05752239d957dbfa84b183e0d7a641952 (patch) | |
tree | 726e3f1e17ec6a3d8c05739d9edf9534103b18fd | |
parent | 4ed6cedeefe8bbcad7c446db939450a6c902c16d (diff) | |
parent | ec9b3a9de6b2a8a08c5250b466db92adf82b8d65 (diff) | |
download | linux-fsl-qoriq-789505b05752239d957dbfa84b183e0d7a641952.tar.xz |
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Two fixes from Intel, one a regression, one because I merged an early
version of a fix.
Also the nouveau revert of the i2c code that was tested on the list."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau/i2c: resume use of i2c-algo-bit, rather than custom stack
drm/i915: Do no set Stencil Cache eviction LRA w/a on gen7+
drm/i915: disable sdvo hotplug on i945g/gm
-rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 9 | ||||
-rw-r--r-- | drivers/gpu/drm/i915/intel_sdvo.c | 6 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_i2c.c | 199 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_i2c.h | 1 |
4 files changed, 34 insertions, 181 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 80fce51..62892a8 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -398,10 +398,8 @@ static int init_render_ring(struct intel_ring_buffer *ring) return ret; } - if (INTEL_INFO(dev)->gen >= 6) { - I915_WRITE(INSTPM, - INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); + if (IS_GEN6(dev)) { /* From the Sandybridge PRM, volume 1 part 3, page 24: * "If this bit is set, STCunit will have LRA as replacement * policy. [...] This bit must be reset. LRA replacement @@ -411,6 +409,11 @@ static int init_render_ring(struct intel_ring_buffer *ring) CM0_STC_EVICT_DISABLE_LRA_SNB << CM0_MASK_SHIFT); } + if (INTEL_INFO(dev)->gen >= 6) { + I915_WRITE(INSTPM, + INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); + } + return ret; } diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 232d77d..ae5e748 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1220,8 +1220,14 @@ static bool intel_sdvo_get_capabilities(struct intel_sdvo *intel_sdvo, struct in static int intel_sdvo_supports_hotplug(struct intel_sdvo *intel_sdvo) { + struct drm_device *dev = intel_sdvo->base.base.dev; u8 response[2]; + /* HW Erratum: SDVO Hotplug is broken on all i945G chips, there's noise + * on the line. */ + if (IS_I945G(dev) || IS_I945GM(dev)) + return false; + return intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_HOT_PLUG_SUPPORT, &response, 2) && response[0]; } diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.c b/drivers/gpu/drm/nouveau/nouveau_i2c.c index e2be95a..77e5646 100644 --- a/drivers/gpu/drm/nouveau/nouveau_i2c.c +++ b/drivers/gpu/drm/nouveau/nouveau_i2c.c @@ -29,10 +29,6 @@ #include "nouveau_i2c.h" #include "nouveau_hw.h" -#define T_TIMEOUT 2200000 -#define T_RISEFALL 1000 -#define T_HOLD 5000 - static void i2c_drive_scl(void *data, int state) { @@ -113,175 +109,6 @@ i2c_sense_sda(void *data) return 0; } -static void -i2c_delay(struct nouveau_i2c_chan *port, u32 nsec) -{ - udelay((nsec + 500) / 1000); -} - -static bool -i2c_raise_scl(struct nouveau_i2c_chan *port) -{ - u32 timeout = T_TIMEOUT / T_RISEFALL; - - i2c_drive_scl(port, 1); - do { - i2c_delay(port, T_RISEFALL); - } while (!i2c_sense_scl(port) && --timeout); - - return timeout != 0; -} - -static int -i2c_start(struct nouveau_i2c_chan *port) -{ - int ret = 0; - - port->state = i2c_sense_scl(port); - port->state |= i2c_sense_sda(port) << 1; - if (port->state != 3) { - i2c_drive_scl(port, 0); - i2c_drive_sda(port, 1); - if (!i2c_raise_scl(port)) - ret = -EBUSY; - } - - i2c_drive_sda(port, 0); - i2c_delay(port, T_HOLD); - i2c_drive_scl(port, 0); - i2c_delay(port, T_HOLD); - return ret; -} - -static void -i2c_stop(struct nouveau_i2c_chan *port) -{ - i2c_drive_scl(port, 0); - i2c_drive_sda(port, 0); - i2c_delay(port, T_RISEFALL); - - i2c_drive_scl(port, 1); - i2c_delay(port, T_HOLD); - i2c_drive_sda(port, 1); - i2c_delay(port, T_HOLD); -} - -static int -i2c_bitw(struct nouveau_i2c_chan *port, int sda) -{ - i2c_drive_sda(port, sda); - i2c_delay(port, T_RISEFALL); - - if (!i2c_raise_scl(port)) - return -ETIMEDOUT; - i2c_delay(port, T_HOLD); - - i2c_drive_scl(port, 0); - i2c_delay(port, T_HOLD); - return 0; -} - -static int -i2c_bitr(struct nouveau_i2c_chan *port) -{ - int sda; - - i2c_drive_sda(port, 1); - i2c_delay(port, T_RISEFALL); - - if (!i2c_raise_scl(port)) - return -ETIMEDOUT; - i2c_delay(port, T_HOLD); - - sda = i2c_sense_sda(port); - - i2c_drive_scl(port, 0); - i2c_delay(port, T_HOLD); - return sda; -} - -static int -i2c_get_byte(struct nouveau_i2c_chan *port, u8 *byte, bool last) -{ - int i, bit; - - *byte = 0; - for (i = 7; i >= 0; i--) { - bit = i2c_bitr(port); - if (bit < 0) - return bit; - *byte |= bit << i; - } - - return i2c_bitw(port, last ? 1 : 0); -} - -static int -i2c_put_byte(struct nouveau_i2c_chan *port, u8 byte) -{ - int i, ret; - for (i = 7; i >= 0; i--) { - ret = i2c_bitw(port, !!(byte & (1 << i))); - if (ret < 0) - return ret; - } - - ret = i2c_bitr(port); - if (ret == 1) /* nack */ - ret = -EIO; - return ret; -} - -static int -i2c_addr(struct nouveau_i2c_chan *port, struct i2c_msg *msg) -{ - u32 addr = msg->addr << 1; - if (msg->flags & I2C_M_RD) - addr |= 1; - return i2c_put_byte(port, addr); -} - -static int -i2c_bit_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) -{ - struct nouveau_i2c_chan *port = (struct nouveau_i2c_chan *)adap; - struct i2c_msg *msg = msgs; - int ret = 0, mcnt = num; - - while (!ret && mcnt--) { - u8 remaining = msg->len; - u8 *ptr = msg->buf; - - ret = i2c_start(port); - if (ret == 0) - ret = i2c_addr(port, msg); - - if (msg->flags & I2C_M_RD) { - while (!ret && remaining--) - ret = i2c_get_byte(port, ptr++, !remaining); - } else { - while (!ret && remaining--) - ret = i2c_put_byte(port, *ptr++); - } - - msg++; - } - - i2c_stop(port); - return (ret < 0) ? ret : num; -} - -static u32 -i2c_bit_func(struct i2c_adapter *adap) -{ - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; -} - -const struct i2c_algorithm nouveau_i2c_bit_algo = { - .master_xfer = i2c_bit_xfer, - .functionality = i2c_bit_func -}; - static const uint32_t nv50_i2c_port[] = { 0x00e138, 0x00e150, 0x00e168, 0x00e180, 0x00e254, 0x00e274, 0x00e764, 0x00e780, @@ -384,12 +211,10 @@ nouveau_i2c_init(struct drm_device *dev) case 0: /* NV04:NV50 */ port->drive = entry[0]; port->sense = entry[1]; - port->adapter.algo = &nouveau_i2c_bit_algo; break; case 4: /* NV4E */ port->drive = 0x600800 + entry[1]; port->sense = port->drive; - port->adapter.algo = &nouveau_i2c_bit_algo; break; case 5: /* NV50- */ port->drive = entry[0] & 0x0f; @@ -402,7 +227,6 @@ nouveau_i2c_init(struct drm_device *dev) port->drive = 0x00d014 + (port->drive * 0x20); port->sense = port->drive; } - port->adapter.algo = &nouveau_i2c_bit_algo; break; case 6: /* NV50- DP AUX */ port->drive = entry[0]; @@ -413,7 +237,7 @@ nouveau_i2c_init(struct drm_device *dev) break; } - if (!port->adapter.algo) { + if (!port->adapter.algo && !port->drive) { NV_ERROR(dev, "I2C%d: type %d index %x/%x unknown\n", i, port->type, port->drive, port->sense); kfree(port); @@ -429,7 +253,26 @@ nouveau_i2c_init(struct drm_device *dev) port->dcb = ROM32(entry[0]); i2c_set_adapdata(&port->adapter, i2c); - ret = i2c_add_adapter(&port->adapter); + if (port->adapter.algo != &nouveau_dp_i2c_algo) { + port->adapter.algo_data = &port->bit; + port->bit.udelay = 10; + port->bit.timeout = usecs_to_jiffies(2200); + port->bit.data = port; + port->bit.setsda = i2c_drive_sda; + port->bit.setscl = i2c_drive_scl; + port->bit.getsda = i2c_sense_sda; + port->bit.getscl = i2c_sense_scl; + + i2c_drive_scl(port, 0); + i2c_drive_sda(port, 1); + i2c_drive_scl(port, 1); + + ret = i2c_bit_add_bus(&port->adapter); + } else { + port->adapter.algo = &nouveau_dp_i2c_algo; + ret = i2c_add_adapter(&port->adapter); + } + if (ret) { NV_ERROR(dev, "I2C%d: failed register: %d\n", i, ret); kfree(port); diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.h b/drivers/gpu/drm/nouveau/nouveau_i2c.h index 4d2e4e9..1d08389 100644 --- a/drivers/gpu/drm/nouveau/nouveau_i2c.h +++ b/drivers/gpu/drm/nouveau/nouveau_i2c.h @@ -34,6 +34,7 @@ struct nouveau_i2c_chan { struct i2c_adapter adapter; struct drm_device *dev; + struct i2c_algo_bit_data bit; struct list_head head; u8 index; u8 type; |