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From:   Maxime Ripard <maxime@cerno.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
        Eric Anholt <eric@anholt.net>
Cc:     dri-devel@lists.freedesktop.org,
        linux-rpi-kernel@lists.infradead.org,
        bcm-kernel-feedback-list@broadcom.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        Tim Gover <tim.gover@raspberrypi.com>,
        Phil Elwell <phil@raspberrypi.com>,
        Maxime Ripard <maxime@cerno.tech>
Subject: [PATCH v3 073/105] drm/vc4: hdmi: Move accessors to vc4_hdmi
Date:   Wed, 27 May 2020 17:48:43 +0200
Message-Id: <1705c3cb40906863ec0d24ee5ea5092f5ee2e994.1590594512.git-series.maxime@cerno.tech>
In-Reply-To: <cover.aaf2100bd7da4609f8bcb8216247d4b4e4379639.1590594512.git-series.maxime@cerno.tech>
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The current driver only supports a single HDMI controller, and part of
the issue is that the main vc4_dev structure holds a pointer to its
(only) HDMI controller, and the HDMI registers accessors will use it to
retrieve the mapped addresses.

Let's modify those accessors to use directly the vc4_hdmi structure so
that we can eventually get rid of that single global pointer.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 24 +++++++++---------------
 drivers/gpu/drm/vc4/vc4_hdmi.h |  8 ++++----
 2 files changed, 13 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 38a14acf73e7..755b3e99a7af 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -123,6 +123,7 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
 {
 	struct drm_device *dev = connector->dev;
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
 
 	if (vc4->hdmi->hpd_gpio) {
 		if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio) ^
@@ -230,6 +231,7 @@ static int vc4_hdmi_stop_packet(struct drm_encoder *encoder,
 {
 	struct drm_device *dev = encoder->dev;
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
 	u32 packet_id = type - 0x80;
 
 	HDMI_WRITE(VC4_HDMI_RAM_PACKET_CONFIG,
@@ -244,6 +246,7 @@ static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder,
 {
 	struct drm_device *dev = encoder->dev;
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
 	u32 packet_id = frame->any.type - 0x80;
 	u32 packet_reg = VC4_HDMI_RAM_PACKET(packet_id);
 	uint8_t buffer[VC4_HDMI_PACKET_STRIDE];
@@ -623,9 +626,6 @@ static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = {
 /* HDMI audio codec callbacks */
 static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi)
 {
-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
-	struct drm_device *drm = encoder->dev;
-	struct vc4_dev *vc4 = to_vc4_dev(drm);
 	u32 hsm_clock = clk_get_rate(vc4_hdmi->hsm_clock);
 	unsigned long n, m;
 
@@ -645,8 +645,6 @@ static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi)
 {
 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
 	struct drm_crtc *crtc = encoder->crtc;
-	struct drm_device *drm = encoder->dev;
-	struct vc4_dev *vc4 = to_vc4_dev(drm);
 	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 	u32 samplerate = vc4_hdmi->audio.samplerate;
 	u32 n, cts;
@@ -683,7 +681,6 @@ static int vc4_hdmi_audio_startup(struct snd_pcm_substream *substream,
 	struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai);
 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
 	struct drm_connector *connector = &vc4_hdmi->connector.base;
-	struct vc4_dev *vc4 = to_vc4_dev(encoder->dev);
 	int ret;
 
 	if (vc4_hdmi->audio.substream && vc4_hdmi->audio.substream != substream)
@@ -714,9 +711,7 @@ static int vc4_hdmi_audio_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 static void vc4_hdmi_audio_reset(struct vc4_hdmi *vc4_hdmi)
 {
 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
-	struct drm_device *drm = encoder->dev;
 	struct device *dev = &vc4_hdmi->pdev->dev;
-	struct vc4_dev *vc4 = to_vc4_dev(drm);
 	int ret;
 
 	ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO);
@@ -747,10 +742,7 @@ static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream,
 				    struct snd_soc_dai *dai)
 {
 	struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai);
-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
-	struct drm_device *drm = encoder->dev;
 	struct device *dev = &vc4_hdmi->pdev->dev;
-	struct vc4_dev *vc4 = to_vc4_dev(drm);
 	u32 audio_packet_config, channel_mask;
 	u32 channel_map, i;
 
@@ -821,8 +813,6 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd,
 {
 	struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai);
 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
-	struct drm_device *drm = encoder->dev;
-	struct vc4_dev *vc4 = to_vc4_dev(drm);
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
@@ -1082,7 +1072,8 @@ static irqreturn_t vc4_cec_irq_handler_thread(int irq, void *priv)
 
 static void vc4_cec_read_msg(struct vc4_dev *vc4, u32 cntrl1)
 {
-	struct cec_msg *msg = &vc4->hdmi->cec_rx_msg;
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
+	struct cec_msg *msg = &vc4_hdmi->cec_rx_msg;
 	unsigned int i;
 
 	msg->len = 1 + ((cntrl1 & VC4_HDMI_CEC_REC_WRD_CNT_MASK) >>
@@ -1128,6 +1119,7 @@ static irqreturn_t vc4_cec_irq_handler(int irq, void *priv)
 static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable)
 {
 	struct vc4_dev *vc4 = cec_get_drvdata(adap);
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
 	/* clock period in microseconds */
 	const u32 usecs = 1000000 / CEC_CLOCK_FREQ;
 	u32 val = HDMI_READ(VC4_HDMI_CEC_CNTRL_5);
@@ -1171,6 +1163,7 @@ static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable)
 static int vc4_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
 {
 	struct vc4_dev *vc4 = cec_get_drvdata(adap);
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
 
 	HDMI_WRITE(VC4_HDMI_CEC_CNTRL_1,
 		   (HDMI_READ(VC4_HDMI_CEC_CNTRL_1) & ~VC4_HDMI_CEC_ADDR_MASK) |
@@ -1182,6 +1175,7 @@ static int vc4_hdmi_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
 				      u32 signal_free_time, struct cec_msg *msg)
 {
 	struct vc4_dev *vc4 = cec_get_drvdata(adap);
+	struct vc4_hdmi *vc4_hdmi = vc4->hdmi;
 	u32 val;
 	unsigned int i;
 
@@ -1392,7 +1386,7 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master,
 
 	cec_unregister_adapter(vc4_hdmi->cec_adap);
 	vc4_hdmi_connector_destroy(&vc4_hdmi->connector.base);
-	vc4_hdmi_encoder_destroy(&vc4_hdmi->encoder.base.base);
+	drm_encoder_cleanup(&vc4_hdmi->encoder.base.base);
 
 	clk_disable_unprepare(vc4_hdmi->hsm_clock);
 	pm_runtime_disable(dev);
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 17079a39f1b1..cdc9d90f62ac 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -78,9 +78,9 @@ struct vc4_hdmi {
 	struct debugfs_regset32 hd_regset;
 };
 
-#define HDMI_READ(offset) readl(vc4->hdmi->hdmicore_regs + offset)
-#define HDMI_WRITE(offset, val) writel(val, vc4->hdmi->hdmicore_regs + offset)
-#define HD_READ(offset) readl(vc4->hdmi->hd_regs + offset)
-#define HD_WRITE(offset, val) writel(val, vc4->hdmi->hd_regs + offset)
+#define HDMI_READ(offset) readl(vc4_hdmi->hdmicore_regs + offset)
+#define HDMI_WRITE(offset, val) writel(val, vc4_hdmi->hdmicore_regs + offset)
+#define HD_READ(offset) readl(vc4_hdmi->hd_regs + offset)
+#define HD_WRITE(offset, val) writel(val, vc4_hdmi->hd_regs + offset)
 
 #endif /* _VC4_HDMI_H_ */
-- 
git-series 0.9.1