[PATCH v5 10/11] drm: bridge: icn6211: Rework ICN6211_DSI to chipone_writeb()

[Marek Vasut]

Rename and inline macro ICN6211_DSI() into function chipone_writeb()
to keep all function names lower-case. No functional change.

Acked-by: Maxime Ripard <maxime at cerno.tech>
Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Jagan Teki <jagan at amarulasolutions.com>
Cc: Maxime Ripard <maxime at cerno.tech>
Cc: Robert Foss <robert.foss at linaro.org>
Cc: Sam Ravnborg <sam at ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann at suse.de>
To: dri-devel at lists.freedesktop.org
---
V2: Rebase on next-20220214
V3: Add AB from Maxime
V4: No change
V5: No change
---
 drivers/gpu/drm/bridge/chipone-icn6211.c | 71 +++++++++++-------------
 1 file changed, 31 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c
index 9fdc0307266d3..7c6dc25082964 100644
--- a/drivers/gpu/drm/bridge/chipone-icn6211.c
+++ b/drivers/gpu/drm/bridge/chipone-icn6211.c
@@ -151,23 +151,14 @@ static inline struct chipone *bridge_to_chipone(struct drm_bridge *bridge)
 	return container_of(bridge, struct chipone, bridge);
 }
 
-static inline int chipone_dsi_write(struct chipone *icn, const u8 *seq,
-				    size_t len)
+static int chipone_writeb(struct chipone *icn, u8 reg, u8 val)
 {
-	if (icn->interface_i2c) {
-		return i2c_smbus_write_byte_data(icn->client, seq[0], seq[1]);
-	} else {
-		return mipi_dsi_generic_write(icn->dsi,
-					      (u8[]){seq[0], seq[1]}, 2);
-	}
+	if (icn->interface_i2c)
+		return i2c_smbus_write_byte_data(icn->client, reg, val);
+	else
+		return mipi_dsi_generic_write(icn->dsi, (u8[]){reg, val}, 2);
 }
 
-#define ICN6211_DSI(icn, seq...)				\
-	{							\
-		const u8 d[] = { seq };				\
-		chipone_dsi_write(icn, d, ARRAY_SIZE(d));	\
-	}
-
 static void chipone_configure_pll(struct chipone *icn,
 				  const struct drm_display_mode *mode)
 {
@@ -242,11 +233,11 @@ static void chipone_configure_pll(struct chipone *icn,
 		(fin * best_m) / BIT(best_p + best_s + 2));
 
 	/* Clock source selection fixed to MIPI DSI clock lane */
-	ICN6211_DSI(icn, PLL_CTRL(6), PLL_CTRL_6_MIPI_CLK);
-	ICN6211_DSI(icn, PLL_REF_DIV,
+	chipone_writeb(icn, PLL_CTRL(6), PLL_CTRL_6_MIPI_CLK);
+	chipone_writeb(icn, PLL_REF_DIV,
 		    (best_p ? PLL_REF_DIV_Pe : 0) | /* Prefer /2 pre-divider */
 		    PLL_REF_DIV_P(best_p) | PLL_REF_DIV_S(best_s));
-	ICN6211_DSI(icn, PLL_INT(0), best_m);
+	chipone_writeb(icn, PLL_INT(0), best_m);
 }
 
 static void chipone_atomic_enable(struct drm_bridge *bridge,
@@ -265,19 +256,19 @@ static void chipone_atomic_enable(struct drm_bridge *bridge,
 	bus_flags = bridge_state->output_bus_cfg.flags;
 
 	if (icn->interface_i2c)
-		ICN6211_DSI(icn, MIPI_CFG_PW, MIPI_CFG_PW_CONFIG_I2C)
+		chipone_writeb(icn, MIPI_CFG_PW, MIPI_CFG_PW_CONFIG_I2C);
 	else
-		ICN6211_DSI(icn, MIPI_CFG_PW, MIPI_CFG_PW_CONFIG_DSI)
+		chipone_writeb(icn, MIPI_CFG_PW, MIPI_CFG_PW_CONFIG_DSI);
 
-	ICN6211_DSI(icn, HACTIVE_LI, mode->hdisplay & 0xff);
+	chipone_writeb(icn, HACTIVE_LI, mode->hdisplay & 0xff);
 
-	ICN6211_DSI(icn, VACTIVE_LI, mode->vdisplay & 0xff);
+	chipone_writeb(icn, VACTIVE_LI, mode->vdisplay & 0xff);
 
 	/*
 	 * lsb nibble: 2nd nibble of hdisplay
 	 * msb nibble: 2nd nibble of vdisplay
 	 */
-	ICN6211_DSI(icn, VACTIVE_HACTIVE_HI,
+	chipone_writeb(icn, VACTIVE_HACTIVE_HI,
 		    ((mode->hdisplay >> 8) & 0xf) |
 		    (((mode->vdisplay >> 8) & 0xf) << 4));
 
@@ -285,44 +276,44 @@ static void chipone_atomic_enable(struct drm_bridge *bridge,
 	hsync = mode->hsync_end - mode->hsync_start;
 	hbp = mode->htotal - mode->hsync_end;
 
-	ICN6211_DSI(icn, HFP_LI, hfp & 0xff);
-	ICN6211_DSI(icn, HSYNC_LI, hsync & 0xff);
-	ICN6211_DSI(icn, HBP_LI, hbp & 0xff);
+	chipone_writeb(icn, HFP_LI, hfp & 0xff);
+	chipone_writeb(icn, HSYNC_LI, hsync & 0xff);
+	chipone_writeb(icn, HBP_LI, hbp & 0xff);
 	/* Top two bits of Horizontal Front porch/Sync/Back porch */
-	ICN6211_DSI(icn, HFP_HSW_HBP_HI,
+	chipone_writeb(icn, HFP_HSW_HBP_HI,
 		    HFP_HSW_HBP_HI_HFP(hfp) |
 		    HFP_HSW_HBP_HI_HS(hsync) |
 		    HFP_HSW_HBP_HI_HBP(hbp));
 
-	ICN6211_DSI(icn, VFP, mode->vsync_start - mode->vdisplay);
+	chipone_writeb(icn, VFP, mode->vsync_start - mode->vdisplay);
 
-	ICN6211_DSI(icn, VSYNC, mode->vsync_end - mode->vsync_start);
+	chipone_writeb(icn, VSYNC, mode->vsync_end - mode->vsync_start);
 
-	ICN6211_DSI(icn, VBP, mode->vtotal - mode->vsync_end);
+	chipone_writeb(icn, VBP, mode->vtotal - mode->vsync_end);
 
 	/* dsi specific sequence */
-	ICN6211_DSI(icn, SYNC_EVENT_DLY, 0x80);
-	ICN6211_DSI(icn, HFP_MIN, hfp & 0xff);
-	ICN6211_DSI(icn, MIPI_PD_CK_LANE, 0xa0);
-	ICN6211_DSI(icn, PLL_CTRL(12), 0xff);
-	ICN6211_DSI(icn, MIPI_PN_SWAP, 0x00);
+	chipone_writeb(icn, SYNC_EVENT_DLY, 0x80);
+	chipone_writeb(icn, HFP_MIN, hfp & 0xff);
+	chipone_writeb(icn, MIPI_PD_CK_LANE, 0xa0);
+	chipone_writeb(icn, PLL_CTRL(12), 0xff);
+	chipone_writeb(icn, MIPI_PN_SWAP, 0x00);
 
 	/* DPI HS/VS/DE polarity */
 	pol = ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? BIST_POL_HSYNC_POL : 0) |
 	      ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? BIST_POL_VSYNC_POL : 0) |
 	      ((bus_flags & DRM_BUS_FLAG_DE_HIGH) ? BIST_POL_DE_POL : 0);
-	ICN6211_DSI(icn, BIST_POL, pol);
+	chipone_writeb(icn, BIST_POL, pol);
 
 	/* Configure PLL settings */
 	chipone_configure_pll(icn, mode);
 
-	ICN6211_DSI(icn, SYS_CTRL(0), 0x40);
-	ICN6211_DSI(icn, SYS_CTRL(1), 0x88);
+	chipone_writeb(icn, SYS_CTRL(0), 0x40);
+	chipone_writeb(icn, SYS_CTRL(1), 0x88);
 
 	/* icn6211 specific sequence */
-	ICN6211_DSI(icn, MIPI_FORCE_0, 0x20);
-	ICN6211_DSI(icn, PLL_CTRL(1), 0x20);
-	ICN6211_DSI(icn, CONFIG_FINISH, 0x10);
+	chipone_writeb(icn, MIPI_FORCE_0, 0x20);
+	chipone_writeb(icn, PLL_CTRL(1), 0x20);
+	chipone_writeb(icn, CONFIG_FINISH, 0x10);
 
 	usleep_range(10000, 11000);
 }
-- 
2.35.1