drm/i915: add onoff utility function

Add a common function to return "on" or "off" string based on the
argument, and drop the local versions of it.

This is the onoff version of

commit 42a8ca4c
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Thu Aug 27 16:23:30 2015 +0300

    drm/i915: add yesno utility function
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452768814-29787-1-git-send-email-jani.nikula@intel.com

drivers/gpu/drm/i915/i915_drv.c

@@ -1335,8 +1335,8 @@ static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
 		return 0;
 
 	DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
-			wait_for_on ? "on" : "off",
-			I915_READ(VLV_GTLC_PW_STATUS));
+		      onoff(wait_for_on),
+		      I915_READ(VLV_GTLC_PW_STATUS));
 
 	/*
 	 * RC6 transitioning can be delayed up to 2 msec (see
@@ -1345,7 +1345,7 @@ static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
 	err = wait_for(COND, 3);
 	if (err)
 		DRM_ERROR("timeout waiting for GT wells to go %s\n",
-			  wait_for_on ? "on" : "off");
+			  onoff(wait_for_on));
 
 	return err;
 #undef COND

drivers/gpu/drm/i915/i915_drv.h

@@ -102,6 +102,11 @@ static inline const char *yesno(bool v)
 	return v ? "yes" : "no";
 }
 
+static inline const char *onoff(bool v)
+{
+	return v ? "on" : "off";
+}
+
 enum pipe {
 	INVALID_PIPE = -1,
 	PIPE_A = 0,

drivers/gpu/drm/i915/intel_display.c

@@ -1150,11 +1150,6 @@ static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
 	}
 }
 
-static const char *state_string(bool enabled)
-{
-	return enabled ? "on" : "off";
-}
-
 /* Only for pre-ILK configs */
 void assert_pll(struct drm_i915_private *dev_priv,
 		enum pipe pipe, bool state)
@@ -1166,7 +1161,7 @@ void assert_pll(struct drm_i915_private *dev_priv,
 	cur_state = !!(val & DPLL_VCO_ENABLE);
 	I915_STATE_WARN(cur_state != state,
 	     "PLL state assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 
 /* XXX: the dsi pll is shared between MIPI DSI ports */
@@ -1182,7 +1177,7 @@ static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
 	cur_state = val & DSI_PLL_VCO_EN;
 	I915_STATE_WARN(cur_state != state,
 	     "DSI PLL state assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
@@ -1206,14 +1201,13 @@ void assert_shared_dpll(struct drm_i915_private *dev_priv,
 	bool cur_state;
 	struct intel_dpll_hw_state hw_state;
 
-	if (WARN (!pll,
-		  "asserting DPLL %s with no DPLL\n", state_string(state)))
+	if (WARN(!pll, "asserting DPLL %s with no DPLL\n", onoff(state)))
 		return;
 
 	cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
 	I915_STATE_WARN(cur_state != state,
 	     "%s assertion failure (expected %s, current %s)\n",
-	     pll->name, state_string(state), state_string(cur_state));
+			pll->name, onoff(state), onoff(cur_state));
 }
 
 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
@@ -1233,7 +1227,7 @@ static void assert_fdi_tx(struct drm_i915_private *dev_priv,
 	}
 	I915_STATE_WARN(cur_state != state,
 	     "FDI TX state assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
@@ -1248,7 +1242,7 @@ static void assert_fdi_rx(struct drm_i915_private *dev_priv,
 	cur_state = !!(val & FDI_RX_ENABLE);
 	I915_STATE_WARN(cur_state != state,
 	     "FDI RX state assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
@@ -1280,7 +1274,7 @@ void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
 	cur_state = !!(val & FDI_RX_PLL_ENABLE);
 	I915_STATE_WARN(cur_state != state,
 	     "FDI RX PLL assertion failure (expected %s, current %s)\n",
-	     state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 
 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
@@ -1338,7 +1332,7 @@ static void assert_cursor(struct drm_i915_private *dev_priv,
 
 	I915_STATE_WARN(cur_state != state,
 	     "cursor on pipe %c assertion failure (expected %s, current %s)\n",
-	     pipe_name(pipe), state_string(state), state_string(cur_state));
+			pipe_name(pipe), onoff(state), onoff(cur_state));
 }
 #define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
 #define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
@@ -1365,7 +1359,7 @@ void assert_pipe(struct drm_i915_private *dev_priv,
 
 	I915_STATE_WARN(cur_state != state,
 	     "pipe %c assertion failure (expected %s, current %s)\n",
-	     pipe_name(pipe), state_string(state), state_string(cur_state));
+			pipe_name(pipe), onoff(state), onoff(cur_state));
 }
 
 static void assert_plane(struct drm_i915_private *dev_priv,
@@ -1378,7 +1372,7 @@ static void assert_plane(struct drm_i915_private *dev_priv,
 	cur_state = !!(val & DISPLAY_PLANE_ENABLE);
 	I915_STATE_WARN(cur_state != state,
 	     "plane %c assertion failure (expected %s, current %s)\n",
-	     plane_name(plane), state_string(state), state_string(cur_state));
+			plane_name(plane), onoff(state), onoff(cur_state));
 }
 
 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
@@ -16317,7 +16311,7 @@ intel_display_print_error_state(struct drm_i915_error_state_buf *m,
 	for_each_pipe(dev_priv, i) {
 		err_printf(m, "Pipe [%d]:\n", i);
 		err_printf(m, "  Power: %s\n",
-			   error->pipe[i].power_domain_on ? "on" : "off");
+			   onoff(error->pipe[i].power_domain_on));
 		err_printf(m, "  SRC: %08x\n", error->pipe[i].source);
 		err_printf(m, "  STAT: %08x\n", error->pipe[i].stat);
 
@@ -16345,7 +16339,7 @@ intel_display_print_error_state(struct drm_i915_error_state_buf *m,
 		err_printf(m, "CPU transcoder: %c\n",
 			   transcoder_name(error->transcoder[i].cpu_transcoder));
 		err_printf(m, "  Power: %s\n",
-			   error->transcoder[i].power_domain_on ? "on" : "off");
+			   onoff(error->transcoder[i].power_domain_on));
 		err_printf(m, "  CONF: %08x\n", error->transcoder[i].conf);
 		err_printf(m, "  HTOTAL: %08x\n", error->transcoder[i].htotal);
 		err_printf(m, "  HBLANK: %08x\n", error->transcoder[i].hblank);

drivers/gpu/drm/i915/intel_dp.c

@@ -2238,11 +2238,6 @@ static void intel_edp_backlight_power(struct intel_connector *connector,
 		_intel_edp_backlight_off(intel_dp);
 }
 
-static const char *state_string(bool enabled)
-{
-	return enabled ? "on" : "off";
-}
-
 static void assert_dp_port(struct intel_dp *intel_dp, bool state)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
@@ -2252,7 +2247,7 @@ static void assert_dp_port(struct intel_dp *intel_dp, bool state)
 	I915_STATE_WARN(cur_state != state,
 			"DP port %c state assertion failure (expected %s, current %s)\n",
 			port_name(dig_port->port),
-			state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 #define assert_dp_port_disabled(d) assert_dp_port((d), false)
 
@@ -2262,7 +2257,7 @@ static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
 
 	I915_STATE_WARN(cur_state != state,
 			"eDP PLL state assertion failure (expected %s, current %s)\n",
-			state_string(state), state_string(cur_state));
+			onoff(state), onoff(cur_state));
 }
 #define assert_edp_pll_enabled(d) assert_edp_pll((d), true)
 #define assert_edp_pll_disabled(d) assert_edp_pll((d), false)

drivers/gpu/drm/i915/intel_pm.c

@@ -4590,13 +4590,13 @@ static void intel_print_rc6_info(struct drm_device *dev, u32 mode)
 	}
 	if (HAS_RC6p(dev))
 		DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s RC6p %s RC6pp %s\n",
-			      (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off",
-			      (mode & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off",
-			      (mode & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off");
+			      onoff(mode & GEN6_RC_CTL_RC6_ENABLE),
+			      onoff(mode & GEN6_RC_CTL_RC6p_ENABLE),
+			      onoff(mode & GEN6_RC_CTL_RC6pp_ENABLE));
 
 	else
 		DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s\n",
-			      (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off");
+			      onoff(mode & GEN6_RC_CTL_RC6_ENABLE));
 }
 
 static int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6)
@@ -4774,8 +4774,7 @@ static void gen9_enable_rc6(struct drm_device *dev)
 	/* 3a: Enable RC6 */
 	if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE)
 		rc6_mask = GEN6_RC_CTL_RC6_ENABLE;
-	DRM_INFO("RC6 %s\n", (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
-			"on" : "off");
+	DRM_INFO("RC6 %s\n", onoff(rc6_mask & GEN6_RC_CTL_RC6_ENABLE));
 	/* WaRsUseTimeoutMode */
 	if (IS_SKL_REVID(dev, 0, SKL_REVID_D0) ||
 	    IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {