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Date: Fri, 14 Oct 2022 17:15:56 +0200
From: Guillaume Ranquet <granquet@...libre.com>
To: Chunfeng Yun <chunfeng.yun@...iatek.com>,
David Airlie <airlied@...il.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Jitao shi <jitao.shi@...iatek.com>, CK Hu <ck.hu@...iatek.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...com>,
Matthias Brugger <matthias.bgg@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Chun-Kuang Hu <chunkuang.hu@...nel.org>
Cc: Guillaume Ranquet <granquet@...libre.com>, stuart.lee@...iatek.com,
linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
linux-kernel@...r.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
mac.shen@...iatek.com, linux-mediatek@...ts.infradead.org,
dri-devel@...ts.freedesktop.org
Subject: [PATCH v2 03/12] drm/mediatek: hdmi: use a regmap instead of iomem
To prepare support for newer chips that need to share their address
range with a dedicated ddc driver, use a regmap.
Signed-off-by: Guillaume Ranquet <granquet@...libre.com>
---
drivers/gpu/drm/mediatek/mtk_hdmi.c | 43 +++++++++++--------------------------
1 file changed, 13 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 4c80b6896dc3..9b02b30a193a 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -171,7 +171,7 @@ struct mtk_hdmi {
u32 ibias_up;
struct regmap *sys_regmap;
unsigned int sys_offset;
- void __iomem *regs;
+ struct regmap *regs;
enum hdmi_colorspace csp;
struct hdmi_audio_param aud_param;
bool audio_enable;
@@ -187,44 +187,29 @@ static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
return container_of(b, struct mtk_hdmi, bridge);
}
-static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset)
+static int mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset, u32 *val)
{
- return readl(hdmi->regs + offset);
+ return regmap_read(hdmi->regs, offset, val);
}
static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val)
{
- writel(val, hdmi->regs + offset);
+ regmap_write(hdmi->regs, offset, val);
}
static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
{
- void __iomem *reg = hdmi->regs + offset;
- u32 tmp;
-
- tmp = readl(reg);
- tmp &= ~bits;
- writel(tmp, reg);
+ regmap_clear_bits(hdmi->regs, offset, bits);
}
static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
{
- void __iomem *reg = hdmi->regs + offset;
- u32 tmp;
-
- tmp = readl(reg);
- tmp |= bits;
- writel(tmp, reg);
+ regmap_set_bits(hdmi->regs, offset, bits);
}
static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask)
{
- void __iomem *reg = hdmi->regs + offset;
- u32 tmp;
-
- tmp = readl(reg);
- tmp = (tmp & ~mask) | (val & mask);
- writel(tmp, reg);
+ regmap_update_bits(hdmi->regs, offset, mask, val);
}
static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
@@ -473,7 +458,7 @@ static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi,
{
u32 val;
- val = mtk_hdmi_read(hdmi, GRL_CFG0);
+ mtk_hdmi_read(hdmi, GRL_CFG0, &val);
val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK);
switch (i2s_fmt) {
@@ -565,7 +550,7 @@ static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi,
{
u32 val;
- val = mtk_hdmi_read(hdmi, GRL_CFG1);
+ mtk_hdmi_read(hdmi, GRL_CFG1, &val);
if (input_type == HDMI_AUD_INPUT_I2S &&
(val & CFG1_SPDIF) == CFG1_SPDIF) {
val &= ~CFG1_SPDIF;
@@ -596,7 +581,7 @@ static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi)
{
u32 val;
- val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
+ mtk_hdmi_read(hdmi, GRL_MIX_CTRL, &val);
if (val & MIX_CTRL_SRC_EN) {
val &= ~MIX_CTRL_SRC_EN;
mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
@@ -610,7 +595,7 @@ static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi)
{
u32 val;
- val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
+ mtk_hdmi_read(hdmi, GRL_MIX_CTRL, &val);
val &= ~MIX_CTRL_SRC_EN;
mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00);
@@ -621,7 +606,7 @@ static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi,
{
u32 val;
- val = mtk_hdmi_read(hdmi, GRL_CFG5);
+ mtk_hdmi_read(hdmi, GRL_CFG5, &val);
val &= CFG5_CD_RATIO_MASK;
switch (mclk) {
@@ -1427,7 +1412,6 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
struct device_node *cec_np, *remote, *i2c_np;
struct platform_device *cec_pdev;
struct regmap *regmap;
- struct resource *mem;
int ret;
ret = mtk_hdmi_get_all_clk(hdmi, np);
@@ -1473,8 +1457,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
}
hdmi->sys_regmap = regmap;
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hdmi->regs = devm_ioremap_resource(dev, mem);
+ hdmi->regs = device_node_to_regmap(dev->of_node);
if (IS_ERR(hdmi->regs)) {
ret = PTR_ERR(hdmi->regs);
goto put_device;
--
b4 0.11.0-dev
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