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Message-Id: <20241216-fd-dp-audio-fixup-v4-9-f8d1961cf22f@linaro.org>
Date: Mon, 16 Dec 2024 00:44:14 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Paloma Arellano <quic_parellan@...cinc.com>
Cc: Douglas Anderson <dianders@...omium.org>,
Stephen Boyd <swboyd@...omium.org>, linux-arm-msm@...r.kernel.org,
dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v4 09/16] drm/msm/dp: move/inline AUX register functions
Move all register-level functions to dp_aux.c, inlining one line
wrappers during this process.
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
Tested-by: Stephen Boyd <swboyd@...omium.org> # sc7180-trogdor
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
drivers/gpu/drm/msm/dp/dp_aux.c | 96 +++++++++++++++++++++++++++++++------
drivers/gpu/drm/msm/dp/dp_catalog.c | 96 -------------------------------------
drivers/gpu/drm/msm/dp/dp_catalog.h | 9 ----
3 files changed, 82 insertions(+), 119 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_aux.c b/drivers/gpu/drm/msm/dp/dp_aux.c
index bc8d46abfc619d669dce339477d58fb0c464a3ea..cdcab948ae7086964d9e913dadadacc333f46231 100644
--- a/drivers/gpu/drm/msm/dp/dp_aux.c
+++ b/drivers/gpu/drm/msm/dp/dp_aux.c
@@ -4,6 +4,7 @@
*/
#include <linux/delay.h>
+#include <linux/iopoll.h>
#include <linux/phy/phy.h>
#include <drm/drm_print.h>
@@ -45,6 +46,71 @@ struct msm_dp_aux_private {
struct drm_dp_aux msm_dp_aux;
};
+static void msm_dp_aux_clear_hw_interrupts(struct msm_dp_aux_private *aux)
+{
+ struct msm_dp_catalog *msm_dp_catalog = aux->catalog;
+
+ msm_dp_read_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_STATUS);
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0x1f);
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0x9f);
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0);
+}
+
+/*
+ * NOTE: resetting AUX controller will also clear any pending HPD related interrupts
+ */
+static void msm_dp_aux_reset(struct msm_dp_aux_private *aux)
+{
+ struct msm_dp_catalog *msm_dp_catalog = aux->catalog;
+ u32 aux_ctrl;
+
+ aux_ctrl = msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_CTRL);
+
+ aux_ctrl |= DP_AUX_CTRL_RESET;
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
+ usleep_range(1000, 1100); /* h/w recommended delay */
+
+ aux_ctrl &= ~DP_AUX_CTRL_RESET;
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
+}
+
+static void msm_dp_aux_enable(struct msm_dp_aux_private *aux)
+{
+ struct msm_dp_catalog *msm_dp_catalog = aux->catalog;
+ u32 aux_ctrl;
+
+ aux_ctrl = msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_CTRL);
+
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_TIMEOUT_COUNT, 0xffff);
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_LIMITS, 0xffff);
+
+ aux_ctrl |= DP_AUX_CTRL_ENABLE;
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
+}
+
+static void msm_dp_aux_disable(struct msm_dp_aux_private *aux)
+{
+ struct msm_dp_catalog *msm_dp_catalog = aux->catalog;
+ u32 aux_ctrl;
+
+ aux_ctrl = msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_CTRL);
+ aux_ctrl &= ~DP_AUX_CTRL_ENABLE;
+ msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
+}
+
+static int msm_dp_aux_wait_for_hpd_connect_state(struct msm_dp_aux_private *aux,
+ unsigned long wait_us)
+{
+ struct msm_dp_catalog *msm_dp_catalog = aux->catalog;
+ u32 state;
+
+ /* poll for hpd connected status every 2ms and timeout after wait_us */
+ return readl_poll_timeout(msm_dp_catalog->aux_base +
+ REG_DP_DP_HPD_INT_STATUS,
+ state, state & DP_DP_HPD_STATE_STATUS_CONNECTED,
+ min(wait_us, 2000), wait_us);
+}
+
#define MAX_AUX_RETRIES 5
static ssize_t msm_dp_aux_write(struct msm_dp_aux_private *aux,
@@ -88,11 +154,11 @@ static ssize_t msm_dp_aux_write(struct msm_dp_aux_private *aux,
/* index = 0, write */
if (i == 0)
reg |= DP_AUX_DATA_INDEX_WRITE;
- msm_dp_catalog_aux_write_data(aux->catalog, reg);
+ msm_dp_write_aux(aux->catalog, REG_DP_AUX_DATA, reg);
}
- msm_dp_catalog_aux_clear_trans(aux->catalog, false);
- msm_dp_catalog_aux_clear_hw_interrupts(aux->catalog);
+ msm_dp_write_aux(aux->catalog, REG_DP_AUX_TRANS_CTRL, 0);
+ msm_dp_aux_clear_hw_interrupts(aux);
reg = 0; /* Transaction number == 1 */
if (!aux->native) { /* i2c */
@@ -106,7 +172,7 @@ static ssize_t msm_dp_aux_write(struct msm_dp_aux_private *aux,
}
reg |= DP_AUX_TRANS_CTRL_GO;
- msm_dp_catalog_aux_write_trans(aux->catalog, reg);
+ msm_dp_write_aux(aux->catalog, REG_DP_AUX_TRANS_CTRL, reg);
return len;
}
@@ -139,20 +205,22 @@ static ssize_t msm_dp_aux_cmd_fifo_rx(struct msm_dp_aux_private *aux,
u32 i, actual_i;
u32 len = msg->size;
- msm_dp_catalog_aux_clear_trans(aux->catalog, true);
+ data = msm_dp_read_aux(aux->catalog, REG_DP_AUX_TRANS_CTRL);
+ data &= ~DP_AUX_TRANS_CTRL_GO;
+ msm_dp_write_aux(aux->catalog, REG_DP_AUX_TRANS_CTRL, data);
data = DP_AUX_DATA_INDEX_WRITE; /* INDEX_WRITE */
data |= DP_AUX_DATA_READ; /* read */
- msm_dp_catalog_aux_write_data(aux->catalog, data);
+ msm_dp_write_aux(aux->catalog, REG_DP_AUX_DATA, data);
dp = msg->buffer;
/* discard first byte */
- data = msm_dp_catalog_aux_read_data(aux->catalog);
+ data = msm_dp_read_aux(aux->catalog, REG_DP_AUX_DATA);
for (i = 0; i < len; i++) {
- data = msm_dp_catalog_aux_read_data(aux->catalog);
+ data = msm_dp_read_aux(aux->catalog, REG_DP_AUX_DATA);
*dp++ = (u8)((data >> DP_AUX_DATA_OFFSET) & 0xff);
actual_i = (data >> DP_AUX_DATA_INDEX_OFFSET) & 0xFF;
@@ -336,7 +404,7 @@ static ssize_t msm_dp_aux_transfer(struct drm_dp_aux *msm_dp_aux,
}
/* reset aux if link is in connected state */
if (msm_dp_catalog_link_is_connected(aux->catalog))
- msm_dp_catalog_aux_reset(aux->catalog);
+ msm_dp_aux_reset(aux);
} else {
aux->retry_cnt = 0;
switch (aux->aux_error_num) {
@@ -403,7 +471,7 @@ irqreturn_t msm_dp_aux_isr(struct drm_dp_aux *msm_dp_aux)
if (isr & DP_INTR_AUX_ERROR) {
aux->aux_error_num = DP_AUX_ERR_PHY;
- msm_dp_catalog_aux_clear_hw_interrupts(aux->catalog);
+ msm_dp_aux_clear_hw_interrupts(aux);
} else if (isr & DP_INTR_NACK_DEFER) {
aux->aux_error_num = DP_AUX_ERR_NACK_DEFER;
} else if (isr & DP_INTR_WRONG_ADDR) {
@@ -444,7 +512,7 @@ void msm_dp_aux_reconfig(struct drm_dp_aux *msm_dp_aux)
aux = container_of(msm_dp_aux, struct msm_dp_aux_private, msm_dp_aux);
phy_calibrate(aux->phy);
- msm_dp_catalog_aux_reset(aux->catalog);
+ msm_dp_aux_reset(aux);
}
void msm_dp_aux_init(struct drm_dp_aux *msm_dp_aux)
@@ -460,7 +528,7 @@ void msm_dp_aux_init(struct drm_dp_aux *msm_dp_aux)
mutex_lock(&aux->mutex);
- msm_dp_catalog_aux_enable(aux->catalog, true);
+ msm_dp_aux_enable(aux);
aux->retry_cnt = 0;
aux->initted = true;
@@ -476,7 +544,7 @@ void msm_dp_aux_deinit(struct drm_dp_aux *msm_dp_aux)
mutex_lock(&aux->mutex);
aux->initted = false;
- msm_dp_catalog_aux_enable(aux->catalog, false);
+ msm_dp_aux_disable(aux);
mutex_unlock(&aux->mutex);
}
@@ -517,7 +585,7 @@ static int msm_dp_wait_hpd_asserted(struct drm_dp_aux *msm_dp_aux,
if (ret)
return ret;
- ret = msm_dp_catalog_aux_wait_for_hpd_connect_state(aux->catalog, wait_us);
+ ret = msm_dp_aux_wait_for_hpd_connect_state(aux, wait_us);
pm_runtime_put_sync(aux->dev);
return ret;
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index 871c935cbe10bc2749960d61cc6b835a3ec2e296..85cc3d3548438ee1d4e5d4aa1fec03cfa6c1bbd3 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -81,102 +81,6 @@ void msm_dp_catalog_snapshot(struct msm_dp_catalog *msm_dp_catalog, struct msm_d
msm_dp_catalog->p0_len, msm_dp_catalog->p0_base, "dp_p0");
}
-/* aux related catalog functions */
-u32 msm_dp_catalog_aux_read_data(struct msm_dp_catalog *msm_dp_catalog)
-{
- return msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_DATA);
-}
-
-int msm_dp_catalog_aux_write_data(struct msm_dp_catalog *msm_dp_catalog, u32 data)
-{
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_DATA, data);
- return 0;
-}
-
-int msm_dp_catalog_aux_write_trans(struct msm_dp_catalog *msm_dp_catalog, u32 data)
-{
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_TRANS_CTRL, data);
- return 0;
-}
-
-int msm_dp_catalog_aux_clear_trans(struct msm_dp_catalog *msm_dp_catalog, bool read)
-{
- u32 data;
-
- if (read) {
- data = msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_TRANS_CTRL);
- data &= ~DP_AUX_TRANS_CTRL_GO;
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_TRANS_CTRL, data);
- } else {
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_TRANS_CTRL, 0);
- }
- return 0;
-}
-
-int msm_dp_catalog_aux_clear_hw_interrupts(struct msm_dp_catalog *msm_dp_catalog)
-{
- msm_dp_read_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_STATUS);
- msm_dp_write_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0x1f);
- msm_dp_write_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0x9f);
- msm_dp_write_aux(msm_dp_catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0);
- return 0;
-}
-
-/**
- * msm_dp_catalog_aux_reset() - reset AUX controller
- *
- * @msm_dp_catalog: DP catalog structure
- *
- * return: void
- *
- * This function reset AUX controller
- *
- * NOTE: reset AUX controller will also clear any pending HPD related interrupts
- *
- */
-void msm_dp_catalog_aux_reset(struct msm_dp_catalog *msm_dp_catalog)
-{
- u32 aux_ctrl;
-
- aux_ctrl = msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_CTRL);
-
- aux_ctrl |= DP_AUX_CTRL_RESET;
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
- usleep_range(1000, 1100); /* h/w recommended delay */
-
- aux_ctrl &= ~DP_AUX_CTRL_RESET;
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
-}
-
-void msm_dp_catalog_aux_enable(struct msm_dp_catalog *msm_dp_catalog, bool enable)
-{
- u32 aux_ctrl;
-
- aux_ctrl = msm_dp_read_aux(msm_dp_catalog, REG_DP_AUX_CTRL);
-
- if (enable) {
- msm_dp_write_aux(msm_dp_catalog, REG_DP_TIMEOUT_COUNT, 0xffff);
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_LIMITS, 0xffff);
- aux_ctrl |= DP_AUX_CTRL_ENABLE;
- } else {
- aux_ctrl &= ~DP_AUX_CTRL_ENABLE;
- }
-
- msm_dp_write_aux(msm_dp_catalog, REG_DP_AUX_CTRL, aux_ctrl);
-}
-
-int msm_dp_catalog_aux_wait_for_hpd_connect_state(struct msm_dp_catalog *msm_dp_catalog,
- unsigned long wait_us)
-{
- u32 state;
-
- /* poll for hpd connected status every 2ms and timeout after wait_us */
- return readl_poll_timeout(msm_dp_catalog->aux_base +
- REG_DP_DP_HPD_INT_STATUS,
- state, state & DP_DP_HPD_STATE_STATUS_CONNECTED,
- min(wait_us, 2000), wait_us);
-}
-
u32 msm_dp_catalog_aux_get_irq(struct msm_dp_catalog *msm_dp_catalog)
{
u32 intr, intr_ack;
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h
index d08761697a8e48b5e6827411eb5d1bc9df4894c8..40fbea821dddfd445ff48b62e2acbf10be522d63 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.h
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.h
@@ -113,15 +113,6 @@ static inline void msm_dp_write_link(struct msm_dp_catalog *msm_dp_catalog,
void msm_dp_catalog_snapshot(struct msm_dp_catalog *msm_dp_catalog, struct msm_disp_state *disp_state);
/* AUX APIs */
-u32 msm_dp_catalog_aux_read_data(struct msm_dp_catalog *msm_dp_catalog);
-int msm_dp_catalog_aux_write_data(struct msm_dp_catalog *msm_dp_catalog, u32 data);
-int msm_dp_catalog_aux_write_trans(struct msm_dp_catalog *msm_dp_catalog, u32 data);
-int msm_dp_catalog_aux_clear_trans(struct msm_dp_catalog *msm_dp_catalog, bool read);
-int msm_dp_catalog_aux_clear_hw_interrupts(struct msm_dp_catalog *msm_dp_catalog);
-void msm_dp_catalog_aux_reset(struct msm_dp_catalog *msm_dp_catalog);
-void msm_dp_catalog_aux_enable(struct msm_dp_catalog *msm_dp_catalog, bool enable);
-int msm_dp_catalog_aux_wait_for_hpd_connect_state(struct msm_dp_catalog *msm_dp_catalog,
- unsigned long wait_us);
u32 msm_dp_catalog_aux_get_irq(struct msm_dp_catalog *msm_dp_catalog);
/* DP Controller APIs */
--
2.39.5
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