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
This commit is contained in:
commit
789505b057
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@ -398,10 +398,8 @@ static int init_render_ring(struct intel_ring_buffer *ring)
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return ret;
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}
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if (INTEL_INFO(dev)->gen >= 6) {
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I915_WRITE(INSTPM,
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INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING);
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if (IS_GEN6(dev)) {
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/* From the Sandybridge PRM, volume 1 part 3, page 24:
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* "If this bit is set, STCunit will have LRA as replacement
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* policy. [...] This bit must be reset. LRA replacement
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@ -411,6 +409,11 @@ static int init_render_ring(struct intel_ring_buffer *ring)
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CM0_STC_EVICT_DISABLE_LRA_SNB << CM0_MASK_SHIFT);
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}
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if (INTEL_INFO(dev)->gen >= 6) {
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I915_WRITE(INSTPM,
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INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING);
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}
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return ret;
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}
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@ -1220,8 +1220,14 @@ static bool intel_sdvo_get_capabilities(struct intel_sdvo *intel_sdvo, struct in
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static int intel_sdvo_supports_hotplug(struct intel_sdvo *intel_sdvo)
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{
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struct drm_device *dev = intel_sdvo->base.base.dev;
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u8 response[2];
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/* HW Erratum: SDVO Hotplug is broken on all i945G chips, there's noise
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* on the line. */
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if (IS_I945G(dev) || IS_I945GM(dev))
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return false;
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return intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_HOT_PLUG_SUPPORT,
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&response, 2) && response[0];
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}
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@ -29,10 +29,6 @@
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#include "nouveau_i2c.h"
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#include "nouveau_hw.h"
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#define T_TIMEOUT 2200000
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#define T_RISEFALL 1000
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#define T_HOLD 5000
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static void
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i2c_drive_scl(void *data, int state)
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{
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@ -113,175 +109,6 @@ i2c_sense_sda(void *data)
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return 0;
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}
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static void
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i2c_delay(struct nouveau_i2c_chan *port, u32 nsec)
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{
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udelay((nsec + 500) / 1000);
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}
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static bool
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i2c_raise_scl(struct nouveau_i2c_chan *port)
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{
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u32 timeout = T_TIMEOUT / T_RISEFALL;
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i2c_drive_scl(port, 1);
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do {
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i2c_delay(port, T_RISEFALL);
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} while (!i2c_sense_scl(port) && --timeout);
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return timeout != 0;
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}
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static int
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i2c_start(struct nouveau_i2c_chan *port)
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{
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int ret = 0;
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port->state = i2c_sense_scl(port);
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port->state |= i2c_sense_sda(port) << 1;
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if (port->state != 3) {
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i2c_drive_scl(port, 0);
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i2c_drive_sda(port, 1);
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if (!i2c_raise_scl(port))
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ret = -EBUSY;
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}
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i2c_drive_sda(port, 0);
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i2c_delay(port, T_HOLD);
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i2c_drive_scl(port, 0);
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i2c_delay(port, T_HOLD);
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return ret;
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}
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static void
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i2c_stop(struct nouveau_i2c_chan *port)
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{
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i2c_drive_scl(port, 0);
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i2c_drive_sda(port, 0);
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i2c_delay(port, T_RISEFALL);
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i2c_drive_scl(port, 1);
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i2c_delay(port, T_HOLD);
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i2c_drive_sda(port, 1);
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i2c_delay(port, T_HOLD);
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}
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static int
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i2c_bitw(struct nouveau_i2c_chan *port, int sda)
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{
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i2c_drive_sda(port, sda);
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i2c_delay(port, T_RISEFALL);
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if (!i2c_raise_scl(port))
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return -ETIMEDOUT;
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i2c_delay(port, T_HOLD);
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i2c_drive_scl(port, 0);
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i2c_delay(port, T_HOLD);
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return 0;
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}
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static int
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i2c_bitr(struct nouveau_i2c_chan *port)
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{
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int sda;
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i2c_drive_sda(port, 1);
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i2c_delay(port, T_RISEFALL);
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if (!i2c_raise_scl(port))
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return -ETIMEDOUT;
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i2c_delay(port, T_HOLD);
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sda = i2c_sense_sda(port);
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i2c_drive_scl(port, 0);
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i2c_delay(port, T_HOLD);
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return sda;
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}
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static int
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i2c_get_byte(struct nouveau_i2c_chan *port, u8 *byte, bool last)
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{
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int i, bit;
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*byte = 0;
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for (i = 7; i >= 0; i--) {
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bit = i2c_bitr(port);
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if (bit < 0)
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return bit;
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*byte |= bit << i;
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}
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return i2c_bitw(port, last ? 1 : 0);
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}
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static int
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i2c_put_byte(struct nouveau_i2c_chan *port, u8 byte)
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{
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int i, ret;
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for (i = 7; i >= 0; i--) {
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ret = i2c_bitw(port, !!(byte & (1 << i)));
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if (ret < 0)
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return ret;
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}
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ret = i2c_bitr(port);
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if (ret == 1) /* nack */
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ret = -EIO;
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return ret;
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}
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static int
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i2c_addr(struct nouveau_i2c_chan *port, struct i2c_msg *msg)
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{
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u32 addr = msg->addr << 1;
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if (msg->flags & I2C_M_RD)
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addr |= 1;
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return i2c_put_byte(port, addr);
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}
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static int
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i2c_bit_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
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{
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struct nouveau_i2c_chan *port = (struct nouveau_i2c_chan *)adap;
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struct i2c_msg *msg = msgs;
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int ret = 0, mcnt = num;
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while (!ret && mcnt--) {
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u8 remaining = msg->len;
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u8 *ptr = msg->buf;
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ret = i2c_start(port);
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if (ret == 0)
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ret = i2c_addr(port, msg);
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if (msg->flags & I2C_M_RD) {
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while (!ret && remaining--)
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ret = i2c_get_byte(port, ptr++, !remaining);
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} else {
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while (!ret && remaining--)
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ret = i2c_put_byte(port, *ptr++);
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}
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msg++;
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}
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i2c_stop(port);
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return (ret < 0) ? ret : num;
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}
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static u32
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i2c_bit_func(struct i2c_adapter *adap)
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{
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return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
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}
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const struct i2c_algorithm nouveau_i2c_bit_algo = {
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.master_xfer = i2c_bit_xfer,
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.functionality = i2c_bit_func
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};
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static const uint32_t nv50_i2c_port[] = {
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0x00e138, 0x00e150, 0x00e168, 0x00e180,
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0x00e254, 0x00e274, 0x00e764, 0x00e780,
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@ -384,12 +211,10 @@ nouveau_i2c_init(struct drm_device *dev)
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case 0: /* NV04:NV50 */
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port->drive = entry[0];
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port->sense = entry[1];
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port->adapter.algo = &nouveau_i2c_bit_algo;
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break;
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case 4: /* NV4E */
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port->drive = 0x600800 + entry[1];
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port->sense = port->drive;
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port->adapter.algo = &nouveau_i2c_bit_algo;
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break;
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case 5: /* NV50- */
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port->drive = entry[0] & 0x0f;
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@ -402,7 +227,6 @@ nouveau_i2c_init(struct drm_device *dev)
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port->drive = 0x00d014 + (port->drive * 0x20);
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port->sense = port->drive;
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}
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port->adapter.algo = &nouveau_i2c_bit_algo;
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break;
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case 6: /* NV50- DP AUX */
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port->drive = entry[0];
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@ -413,7 +237,7 @@ nouveau_i2c_init(struct drm_device *dev)
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break;
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}
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if (!port->adapter.algo) {
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if (!port->adapter.algo && !port->drive) {
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NV_ERROR(dev, "I2C%d: type %d index %x/%x unknown\n",
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i, port->type, port->drive, port->sense);
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kfree(port);
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@ -429,7 +253,26 @@ nouveau_i2c_init(struct drm_device *dev)
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port->dcb = ROM32(entry[0]);
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i2c_set_adapdata(&port->adapter, i2c);
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ret = i2c_add_adapter(&port->adapter);
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if (port->adapter.algo != &nouveau_dp_i2c_algo) {
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port->adapter.algo_data = &port->bit;
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port->bit.udelay = 10;
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port->bit.timeout = usecs_to_jiffies(2200);
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port->bit.data = port;
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port->bit.setsda = i2c_drive_sda;
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port->bit.setscl = i2c_drive_scl;
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port->bit.getsda = i2c_sense_sda;
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port->bit.getscl = i2c_sense_scl;
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i2c_drive_scl(port, 0);
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i2c_drive_sda(port, 1);
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i2c_drive_scl(port, 1);
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ret = i2c_bit_add_bus(&port->adapter);
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} else {
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port->adapter.algo = &nouveau_dp_i2c_algo;
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ret = i2c_add_adapter(&port->adapter);
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}
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if (ret) {
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NV_ERROR(dev, "I2C%d: failed register: %d\n", i, ret);
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kfree(port);
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@ -34,6 +34,7 @@
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struct nouveau_i2c_chan {
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struct i2c_adapter adapter;
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struct drm_device *dev;
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struct i2c_algo_bit_data bit;
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struct list_head head;
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u8 index;
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u8 type;
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