linux-kernel - [PATCH v2 04/14] drm/sun4i: hdmi: Use more portable I/O helpers

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Message-Id: <20220412042807.47519-5-samuel@sholland.org>
Date:   Mon, 11 Apr 2022 23:27:56 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maxime Ripard <mripard@...nel.org>
Cc:     Samuel Holland <samuel@...lland.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, kernel test robot <lkp@...el.com>
Subject: [PATCH v2 04/14] drm/sun4i: hdmi: Use more portable I/O helpers

readsb/writesb are unavailable on some architectures. In preparation for
removing the Kconfig architecture dependency, switch to the equivalent
but more portable ioread/write8_rep helpers.

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Samuel Holland <samuel@...lland.org>
---

Changes in v2:
 - New patch: I/O helper portability

 drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c
index b66fa27fe6ea..c7d7e9fff91c 100644
--- a/drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c
+++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c
@@ -56,9 +56,9 @@ static int fifo_transfer(struct sun4i_hdmi *hdmi, u8 *buf, int len, bool read)
 		return -EIO;
 
 	if (read)
-		readsb(hdmi->base + hdmi->variant->ddc_fifo_reg, buf, len);
+		ioread8_rep(hdmi->base + hdmi->variant->ddc_fifo_reg, buf, len);
 	else
-		writesb(hdmi->base + hdmi->variant->ddc_fifo_reg, buf, len);
+		iowrite8_rep(hdmi->base + hdmi->variant->ddc_fifo_reg, buf, len);
 
 	/* Clear FIFO request bit by forcing a write to that bit */
 	regmap_field_force_write(hdmi->field_ddc_int_status,
-- 
2.35.1