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Subject[PATCH 2/4] drm/amd/display: codestyle cleanup on dc_link file until detect_dp func
Removes codestyle issues on the file dc_link until detect_dp func as
suggested by checkpatch.pl.

Types covered:

CHECK: Please don't use multiple blank lines
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Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 109 ++++++++----------
1 file changed, 49 insertions(+), 60 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index f580b533db5f..0b303d17e543 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -49,7 +49,6 @@

#define DC_LOGGER_INIT(logger)

-
#define LINK_INFO(...) \
DC_LOG_HW_HOTPLUG( \
__VA_ARGS__)
@@ -79,7 +78,7 @@ static void dc_link_destruct(struct dc_link *link)
{
int i;

- if (link->hpd_gpio != NULL) {
+ if (link->hpd_gpio) {
dal_gpio_destroy_irq(&link->hpd_gpio);
link->hpd_gpio = NULL;
}
@@ -87,7 +86,7 @@ static void dc_link_destruct(struct dc_link *link)
if (link->ddc)
dal_ddc_service_destroy(&link->ddc);

- if(link->link_enc)
+ if (link->link_enc)
link->link_enc->funcs->destroy(&link->link_enc);

if (link->local_sink)
@@ -98,8 +97,8 @@ static void dc_link_destruct(struct dc_link *link)
}

struct gpio *get_hpd_gpio(struct dc_bios *dcb,
- struct graphics_object_id link_id,
- struct gpio_service *gpio_service)
+ struct graphics_object_id link_id,
+ struct gpio_service *gpio_service)
{
enum bp_result bp_result;
struct graphics_object_hpd_info hpd_info;
@@ -116,10 +115,9 @@ struct gpio *get_hpd_gpio(struct dc_bios *dcb,
return NULL;
}

- return dal_gpio_service_create_irq(
- gpio_service,
- pin_info.offset,
- pin_info.mask);
+ return dal_gpio_service_create_irq(gpio_service,
+ pin_info.offset,
+ pin_info.mask);
}

/*
@@ -134,13 +132,10 @@ struct gpio *get_hpd_gpio(struct dc_bios *dcb,
* @return
* true on success, false otherwise
*/
-static bool program_hpd_filter(
- const struct dc_link *link)
+static bool program_hpd_filter(const struct dc_link *link)
{
bool result = false;
-
struct gpio *hpd;
-
int delay_on_connect_in_ms = 0;
int delay_on_disconnect_in_ms = 0;

@@ -159,10 +154,10 @@ static bool program_hpd_filter(
case SIGNAL_TYPE_DISPLAY_PORT_MST:
/* Program hpd filter to allow DP signal to settle */
/* 500: not able to detect MST <-> SST switch as HPD is low for
- * only 100ms on DELL U2413
- * 0: some passive dongle still show aux mode instead of i2c
- * 20-50:not enough to hide bouncing HPD with passive dongle.
- * also see intermittent i2c read issues.
+ * only 100ms on DELL U2413
+ * 0: some passive dongle still show aux mode instead of i2c
+ * 20-50: not enough to hide bouncing HPD with passive dongle.
+ * also see intermittent i2c read issues.
*/
delay_on_connect_in_ms = 80;
delay_on_disconnect_in_ms = 0;
@@ -175,7 +170,8 @@ static bool program_hpd_filter(
}

/* Obtain HPD handle */
- hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);
+ hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
+ link->ctx->gpio_service);

if (!hpd)
return result;
@@ -226,8 +222,9 @@ bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type)
}

/* todo: may need to lock gpio access */
- hpd_pin = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);
- if (hpd_pin == NULL)
+ hpd_pin = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
+ link->ctx->gpio_service);
+ if (!hpd_pin)
goto hpd_gpio_failure;

dal_gpio_open(hpd_pin, GPIO_MODE_INTERRUPT);
@@ -248,8 +245,7 @@ bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type)
return false;
}

-static enum ddc_transaction_type get_ddc_transaction_type(
- enum signal_type sink_signal)
+static enum ddc_transaction_type get_ddc_transaction_type(enum signal_type sink_signal)
{
enum ddc_transaction_type transaction_type = DDC_TRANSACTION_TYPE_NONE;

@@ -282,9 +278,8 @@ static enum ddc_transaction_type get_ddc_transaction_type(
return transaction_type;
}

-static enum signal_type get_basic_signal_type(
- struct graphics_object_id encoder,
- struct graphics_object_id downstream)
+static enum signal_type get_basic_signal_type(struct graphics_object_id encoder,
+ struct graphics_object_id downstream)
{
if (downstream.type == OBJECT_TYPE_CONNECTOR) {
switch (downstream.id) {
@@ -373,8 +368,8 @@ bool dc_link_is_dp_sink_present(struct dc_link *link)
* which indicates we need additional delay
*/

- if (GPIO_RESULT_OK != dal_ddc_open(
- ddc, GPIO_MODE_INPUT, GPIO_DDC_CONFIG_TYPE_MODE_I2C)) {
+ if (dal_ddc_open(ddc, GPIO_MODE_INPUT,
+ GPIO_DDC_CONFIG_TYPE_MODE_I2C) != GPIO_RESULT_OK) {
dal_ddc_close(ddc);

return present;
@@ -408,12 +403,11 @@ bool dc_link_is_dp_sink_present(struct dc_link *link)
* @brief
* Detect output sink type
*/
-static enum signal_type link_detect_sink(
- struct dc_link *link,
- enum dc_detect_reason reason)
+static enum signal_type link_detect_sink(struct dc_link *link,
+ enum dc_detect_reason reason)
{
- enum signal_type result = get_basic_signal_type(
- link->link_enc->id, link->link_id);
+ enum signal_type result = get_basic_signal_type(link->link_enc->id,
+ link->link_id);

/* Internal digital encoder will detect only dongles
* that require digital signal
@@ -428,17 +422,16 @@ static enum signal_type link_detect_sink(
*/

/* PCIE detects the actual connector on add-on board */
-
- if (link->link_id.id == CONNECTOR_ID_PCIE) {
+ if (link->link_id.id == CONNECTOR_ID_PCIE)
/* ZAZTODO implement PCIE add-on card detection */
- }

switch (link->link_id.id) {
case CONNECTOR_ID_HDMI_TYPE_A: {
/* check audio support:
* if native HDMI is not supported, switch to DVI
*/
- struct audio_support *aud_support = &link->dc->res_pool->audio_support;
+ struct audio_support *aud_support =
+ &link->dc->res_pool->audio_support;

if (!aud_support->hdmi_audio_native)
if (link->link_id.id == CONNECTOR_ID_HDMI_TYPE_A)
@@ -466,16 +459,15 @@ static enum signal_type link_detect_sink(
return result;
}

-static enum signal_type decide_signal_from_strap_and_dongle_type(
- enum display_dongle_type dongle_type,
- struct audio_support *audio_support)
+static enum signal_type decide_signal_from_strap_and_dongle_type(enum display_dongle_type dongle_type,
+ struct audio_support *audio_support)
{
enum signal_type signal = SIGNAL_TYPE_NONE;

switch (dongle_type) {
case DISPLAY_DONGLE_DP_HDMI_DONGLE:
if (audio_support->hdmi_audio_on_dongle)
- signal = SIGNAL_TYPE_HDMI_TYPE_A;
+ signal = SIGNAL_TYPE_HDMI_TYPE_A;
else
signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
break;
@@ -496,16 +488,14 @@ static enum signal_type decide_signal_from_strap_and_dongle_type(
return signal;
}

-static enum signal_type dp_passive_dongle_detection(
- struct ddc_service *ddc,
- struct display_sink_capability *sink_cap,
- struct audio_support *audio_support)
+static enum signal_type dp_passive_dongle_detection(struct ddc_service *ddc,
+ struct display_sink_capability *sink_cap,
+ struct audio_support *audio_support)
{
- dal_ddc_service_i2c_query_dp_dual_mode_adaptor(
- ddc, sink_cap);
- return decide_signal_from_strap_and_dongle_type(
- sink_cap->dongle_type,
- audio_support);
+ dal_ddc_service_i2c_query_dp_dual_mode_adaptor(ddc, sink_cap);
+
+ return decide_signal_from_strap_and_dongle_type(sink_cap->dongle_type,
+ audio_support);
}

static void link_disconnect_sink(struct dc_link *link)
@@ -524,7 +514,6 @@ static void link_disconnect_remap(struct dc_sink *prev_sink, struct dc_link *lin
link->local_sink = prev_sink;
}

-
static void read_current_link_settings_on_detect(struct dc_link *link)
{
union lane_count_set lane_count_set = { {0} };
@@ -537,18 +526,18 @@ static void read_current_link_settings_on_detect(struct dc_link *link)

// Read DPCD 00101h to find out the number of lanes currently set
for (i = 0; i < read_dpcd_retry_cnt; i++) {
- status = core_link_read_dpcd(
- link,
- DP_LANE_COUNT_SET,
- &lane_count_set.raw,
- sizeof(lane_count_set));
+ status = core_link_read_dpcd(link,
+ DP_LANE_COUNT_SET,
+ &lane_count_set.raw,
+ sizeof(lane_count_set));
/* First DPCD read after VDD ON can fail if the particular board
* does not have HPD pin wired correctly. So if DPCD read fails,
* which it should never happen, retry a few times. Target worst
* case scenario of 80 ms.
*/
if (status == DC_OK) {
- link->cur_link_settings.lane_count = lane_count_set.bits.LANE_COUNT_SET;
+ link->cur_link_settings.lane_count =
+ lane_count_set.bits.LANE_COUNT_SET;
break;
}

@@ -557,7 +546,7 @@ static void read_current_link_settings_on_detect(struct dc_link *link)

// Read DPCD 00100h to find if standard link rates are set
core_link_read_dpcd(link, DP_LINK_BW_SET,
- &link_bw_set, sizeof(link_bw_set));
+ &link_bw_set, sizeof(link_bw_set));

if (link_bw_set == 0) {
if (link->connector_signal == SIGNAL_TYPE_EDP) {
@@ -565,12 +554,12 @@ static void read_current_link_settings_on_detect(struct dc_link *link)
* Read DPCD 00115h to find the edp link rate set used
*/
core_link_read_dpcd(link, DP_LINK_RATE_SET,
- &link_rate_set, sizeof(link_rate_set));
+ &link_rate_set, sizeof(link_rate_set));

// edp_supported_link_rates_count = 0 for DP
if (link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) {
link->cur_link_settings.link_rate =
- link->dpcd_caps.edp_supported_link_rates[link_rate_set];
+ link->dpcd_caps.edp_supported_link_rates[link_rate_set];
link->cur_link_settings.link_rate_set = link_rate_set;
link->cur_link_settings.use_link_rate_set = true;
}
@@ -584,7 +573,7 @@ static void read_current_link_settings_on_detect(struct dc_link *link)
}
// Read DPCD 00003h to find the max down spread.
core_link_read_dpcd(link, DP_MAX_DOWNSPREAD,
- &max_down_spread.raw, sizeof(max_down_spread));
+ &max_down_spread.raw, sizeof(max_down_spread));
link->cur_link_settings.link_spread =
max_down_spread.bits.MAX_DOWN_SPREAD ?
LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED;
--
2.25.1
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