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drm/i915: Use REG_BIT() & co. for AUX CH registers
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 9 May 2023 17:14:11 +0000 (20:14 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Thu, 11 May 2023 14:25:10 +0000 (17:25 +0300)
Modernize the DP AUX CH register definitions with REG_BIT() & co.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230509171411.7184-1-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
drivers/gpu/drm/i915/display/intel_dp_aux.c patch | blob | history
drivers/gpu/drm/i915/display/intel_dp_aux_regs.h patch | blob | history
drivers/gpu/drm/i915/gvt/edid.c patch | blob | history

diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c
index abf77ba..25e36bd 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dp_aux.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c
@@ -161,14 +161,14 @@ static u32 g4x_get_aux_send_ctl(struct intel_dp *intel_dp,
                timeout = DP_AUX_CH_CTL_TIME_OUT_400us;
 
        return DP_AUX_CH_CTL_SEND_BUSY |
-              DP_AUX_CH_CTL_DONE |
-              DP_AUX_CH_CTL_INTERRUPT |
-              DP_AUX_CH_CTL_TIME_OUT_ERROR |
-              timeout |
-              DP_AUX_CH_CTL_RECEIVE_ERROR |
-              (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
-              (g4x_dp_aux_precharge_len() << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
-              (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT);
+               DP_AUX_CH_CTL_DONE |
+               DP_AUX_CH_CTL_INTERRUPT |
+               DP_AUX_CH_CTL_TIME_OUT_ERROR |
+               timeout |
+               DP_AUX_CH_CTL_RECEIVE_ERROR |
+               DP_AUX_CH_CTL_MESSAGE_SIZE(send_bytes) |
+               DP_AUX_CH_CTL_PRECHARGE_2US(g4x_dp_aux_precharge_len()) |
+               DP_AUX_CH_CTL_BIT_CLOCK_2X(aux_clock_divider);
 }
 
 static u32 skl_get_aux_send_ctl(struct intel_dp *intel_dp,
@@ -185,14 +185,14 @@ static u32 skl_get_aux_send_ctl(struct intel_dp *intel_dp,
         * ICL+: 4ms
         */
        ret = DP_AUX_CH_CTL_SEND_BUSY |
-             DP_AUX_CH_CTL_DONE |
-             DP_AUX_CH_CTL_INTERRUPT |
-             DP_AUX_CH_CTL_TIME_OUT_ERROR |
-             DP_AUX_CH_CTL_TIME_OUT_MAX |
-             DP_AUX_CH_CTL_RECEIVE_ERROR |
-             (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
-             DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(intel_dp_aux_fw_sync_len()) |
-             DP_AUX_CH_CTL_SYNC_PULSE_SKL(intel_dp_aux_sync_len());
+               DP_AUX_CH_CTL_DONE |
+               DP_AUX_CH_CTL_INTERRUPT |
+               DP_AUX_CH_CTL_TIME_OUT_ERROR |
+               DP_AUX_CH_CTL_TIME_OUT_MAX |
+               DP_AUX_CH_CTL_RECEIVE_ERROR |
+               DP_AUX_CH_CTL_MESSAGE_SIZE(send_bytes) |
+               DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(intel_dp_aux_fw_sync_len()) |
+               DP_AUX_CH_CTL_SYNC_PULSE_SKL(intel_dp_aux_sync_len());
 
        if (intel_tc_port_in_tbt_alt_mode(dig_port))
                ret |= DP_AUX_CH_CTL_TBT_IO;
@@ -378,8 +378,7 @@ done:
        }
 
        /* Unload any bytes sent back from the other side */
-       recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >>
-                     DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT);
+       recv_bytes = REG_FIELD_GET(DP_AUX_CH_CTL_MESSAGE_SIZE_MASK, status);
 
        /*
         * By BSpec: "Message sizes of 0 or >20 are not allowed."
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h b/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h
index 5702f31..5185345 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h
@@ -50,35 +50,37 @@
                                                       _XELPDP_USBC3_AUX_CH_DATA1, \
                                                       _XELPDP_USBC4_AUX_CH_DATA1) + (i) * 4)
 
-#define   DP_AUX_CH_CTL_SEND_BUSY          (1 << 31)
-#define   DP_AUX_CH_CTL_DONE               (1 << 30)
-#define   DP_AUX_CH_CTL_INTERRUPT          (1 << 29)
-#define   DP_AUX_CH_CTL_TIME_OUT_ERROR     (1 << 28)
-#define   DP_AUX_CH_CTL_TIME_OUT_400us     (0 << 26)
-#define   DP_AUX_CH_CTL_TIME_OUT_600us     (1 << 26)
-#define   DP_AUX_CH_CTL_TIME_OUT_800us     (2 << 26)
-#define   DP_AUX_CH_CTL_TIME_OUT_MAX       (3 << 26) /* Varies per platform */
-#define   DP_AUX_CH_CTL_TIME_OUT_MASK      (3 << 26)
-#define   DP_AUX_CH_CTL_RECEIVE_ERROR      (1 << 25)
-#define   DP_AUX_CH_CTL_MESSAGE_SIZE_MASK    (0x1f << 20)
-#define   DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT   20
-#define   XELPDP_DP_AUX_CH_CTL_POWER_REQUEST REG_BIT(19)
-#define   XELPDP_DP_AUX_CH_CTL_POWER_STATUS  REG_BIT(18)
-#define   DP_AUX_CH_CTL_PRECHARGE_2US_MASK   (0xf << 16)
-#define   DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT  16
-#define   DP_AUX_CH_CTL_AUX_AKSV_SELECT            (1 << 15)
-#define   DP_AUX_CH_CTL_MANCHESTER_TEST            (1 << 14)
-#define   DP_AUX_CH_CTL_SYNC_TEST          (1 << 13)
-#define   DP_AUX_CH_CTL_DEGLITCH_TEST      (1 << 12)
-#define   DP_AUX_CH_CTL_PRECHARGE_TEST     (1 << 11)
-#define   DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK    (0x7ff)
-#define   DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT   0
-#define   DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL   (1 << 14)
-#define   DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL    (1 << 13)
-#define   DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL   (1 << 12)
-#define   DP_AUX_CH_CTL_TBT_IO                 (1 << 11)
-#define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK (0x1f << 5)
-#define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c) (((c) - 1) << 5)
-#define   DP_AUX_CH_CTL_SYNC_PULSE_SKL(c)   ((c) - 1)
+#define   DP_AUX_CH_CTL_SEND_BUSY              REG_BIT(31)
+#define   DP_AUX_CH_CTL_DONE                   REG_BIT(30)
+#define   DP_AUX_CH_CTL_INTERRUPT              REG_BIT(29)
+#define   DP_AUX_CH_CTL_TIME_OUT_ERROR         REG_BIT(28)
+
+#define   DP_AUX_CH_CTL_TIME_OUT_MASK          REG_GENMASK(27, 26)
+#define   DP_AUX_CH_CTL_TIME_OUT_400us         REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 0)
+#define   DP_AUX_CH_CTL_TIME_OUT_600us         REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 1)
+#define   DP_AUX_CH_CTL_TIME_OUT_800us         REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 2)
+#define   DP_AUX_CH_CTL_TIME_OUT_MAX           REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 3) /* Varies per platform */
+#define   DP_AUX_CH_CTL_RECEIVE_ERROR          REG_BIT(25)
+#define   DP_AUX_CH_CTL_MESSAGE_SIZE_MASK      REG_GENMASK(24, 20)
+#define   DP_AUX_CH_CTL_MESSAGE_SIZE(x)                REG_FIELD_PREP(DP_AUX_CH_CTL_MESSAGE_SIZE_MASK, (x))
+#define   DP_AUX_CH_CTL_PRECHARGE_2US_MASK     REG_GENMASK(19, 16) /* pre-skl */
+#define   DP_AUX_CH_CTL_PRECHARGE_2US(x)       REG_FIELD_PREP(DP_AUX_CH_CTL_PRECHARGE_2US_MASK, (x))
+#define   XELPDP_DP_AUX_CH_CTL_POWER_REQUEST   REG_BIT(19) /* mtl+ */
+#define   XELPDP_DP_AUX_CH_CTL_POWER_STATUS    REG_BIT(18) /* mtl+ */
+#define   DP_AUX_CH_CTL_AUX_AKSV_SELECT                REG_BIT(15)
+#define   DP_AUX_CH_CTL_MANCHESTER_TEST                REG_BIT(14) /* pre-hsw */
+#define   DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL   REG_BIT(14) /* skl+ */
+#define   DP_AUX_CH_CTL_SYNC_TEST              REG_BIT(13) /* pre-hsw */
+#define   DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL    REG_BIT(13) /* skl+ */
+#define   DP_AUX_CH_CTL_DEGLITCH_TEST          REG_BIT(12) /* pre-hsw */
+#define   DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL   REG_BIT(12) /* skl+ */
+#define   DP_AUX_CH_CTL_PRECHARGE_TEST         REG_BIT(11) /* pre-hsw */
+#define   DP_AUX_CH_CTL_TBT_IO                 REG_BIT(11) /* icl+ */
+#define   DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK      REG_GENMASK(10, 0) /* pre-skl */
+#define   DP_AUX_CH_CTL_BIT_CLOCK_2X(x)                REG_FIELD_PREP(DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK, (x))
+#define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK REG_GENMASK(9, 5) /* skl+ */
+#define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c)   REG_FIELD_PREP(DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK, (c) - 1)
+#define   DP_AUX_CH_CTL_SYNC_PULSE_SKL_MASK    REG_GENMASK(4, 0) /* skl+ */
+#define   DP_AUX_CH_CTL_SYNC_PULSE_SKL(c)      REG_FIELD_PREP(DP_AUX_CH_CTL_SYNC_PULSE_SKL_MASK, (c) - 1)
 
 #endif /* __INTEL_DP_AUX_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/gvt/edid.c b/drivers/gpu/drm/i915/gvt/edid.c
index 7c49a3d..2a0438f 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/edid.c
+++ b/drivers/gpu/drm/i915/gvt/edid.c
@@ -463,10 +463,6 @@ static inline int get_aux_ch_reg(unsigned int offset)
        return reg;
 }
 
-#define AUX_CTL_MSG_LENGTH(reg) \
-       ((reg & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> \
-               DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT)
-
 /**
  * intel_gvt_i2c_handle_aux_ch_write - emulate AUX channel register write
  * @vgpu: a vGPU
@@ -495,7 +491,8 @@ void intel_gvt_i2c_handle_aux_ch_write(struct intel_vgpu *vgpu,
                return;
        }
 
-       msg_length = AUX_CTL_MSG_LENGTH(value);
+       msg_length = REG_FIELD_GET(DP_AUX_CH_CTL_MESSAGE_SIZE_MASK, reg);
+
        // check the msg in DATA register.
        msg = vgpu_vreg(vgpu, offset + 4);
        addr = (msg >> 8) & 0xffff;
@@ -510,8 +507,7 @@ void intel_gvt_i2c_handle_aux_ch_write(struct intel_vgpu *vgpu,
        ret_msg_size = (((op & 0x1) == GVT_AUX_I2C_READ) ? 2 : 1);
        vgpu_vreg(vgpu, offset) =
                DP_AUX_CH_CTL_DONE |
-               ((ret_msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) &
-               DP_AUX_CH_CTL_MESSAGE_SIZE_MASK);
+               DP_AUX_CH_CTL_MESSAGE_SIZE(ret_msg_size);
 
        if (msg_length == 3) {
                if (!(op & GVT_AUX_I2C_MOT)) {
Domain: System / Kernel;