From: Su Sung Chung <Su.Chung@xxxxxxx>
[why]
if dynamic allocation fails during gpio_open, it will cause crash due to
page fault.
[how]
handle allocation when gpio object gets created and prevent from calling
gpio_open if allocation failed
Signed-off-by: Su Sung Chung <Su.Chung@xxxxxxx>
Reviewed-by: Jun Lei <Jun.Lei@xxxxxxx>
Acked-by: Leo Li <sunpeng.li@xxxxxxx>
---
.../dc/gpio/dce110/hw_factory_dce110.c | 18 +++--
.../dc/gpio/dce120/hw_factory_dce120.c | 14 ++--
.../display/dc/gpio/dce80/hw_factory_dce80.c | 14 ++--
.../display/dc/gpio/dcn10/hw_factory_dcn10.c | 12 +--
.../display/dc/gpio/dcn20/hw_factory_dcn20.c | 12 +--
.../dc/gpio/diagnostics/hw_factory_diag.c | 9 +--
.../gpu/drm/amd/display/dc/gpio/gpio_base.c | 74 ++++++++++++++++++-
.../drm/amd/display/dc/gpio/gpio_service.c | 51 ++++++-------
.../drm/amd/display/dc/gpio/gpio_service.h | 6 +-
drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c | 26 ++++---
drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.h | 5 +-
.../gpu/drm/amd/display/dc/gpio/hw_factory.h | 48 ++++++------
.../gpu/drm/amd/display/dc/gpio/hw_generic.c | 32 ++++----
.../gpu/drm/amd/display/dc/gpio/hw_generic.h | 6 +-
drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.c | 31 ++++----
drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h | 5 +-
drivers/gpu/drm/amd/display/dc/inc/hw/gpio.h | 10 +++
.../drm/amd/display/include/gpio_interface.h | 9 +++
18 files changed, 245 insertions(+), 137 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dce110/hw_factory_dce110.c b/drivers/gpu/drm/amd/display/dc/gpio/dce110/hw_factory_dce110.c
index 20d81bca119c..66e4841f41e4 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dce110/hw_factory_dce110.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dce110/hw_factory_dce110.c
@@ -24,9 +24,15 @@
*/
#include "dm_services.h"
+
#include "include/gpio_types.h"
#include "../hw_factory.h"
+#include "../hw_gpio.h"
+#include "../hw_ddc.h"
+#include "../hw_hpd.h"
+#include "../hw_generic.h"
+
#include "hw_factory_dce110.h"
#include "dce/dce_11_0_d.h"
@@ -143,12 +149,12 @@ static void define_hpd_registers(struct hw_gpio_pin *pin, uint32_t en)
}
static const struct hw_factory_funcs funcs = {
- .create_ddc_data = dal_hw_ddc_create,
- .create_ddc_clock = dal_hw_ddc_create,
- .create_generic = NULL,
- .create_hpd = dal_hw_hpd_create,
- .create_sync = NULL,
- .create_gsl = NULL,
+ .init_ddc_data = dal_hw_ddc_init,
+ .init_generic = NULL,
+ .init_hpd = dal_hw_hpd_init,
+ .get_ddc_pin = dal_hw_ddc_get_pin,
+ .get_hpd_pin = dal_hw_hpd_get_pin,
+ .get_generic_pin = NULL,
.define_hpd_registers = define_hpd_registers,
.define_ddc_registers = define_ddc_registers
};
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dce120/hw_factory_dce120.c b/drivers/gpu/drm/amd/display/dc/gpio/dce120/hw_factory_dce120.c
index ea3f888e5c65..cf98aa827a9a 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dce120/hw_factory_dce120.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dce120/hw_factory_dce120.c
@@ -27,10 +27,10 @@
#include "include/gpio_types.h"
#include "../hw_factory.h"
-
#include "../hw_gpio.h"
#include "../hw_ddc.h"
#include "../hw_hpd.h"
+#include "../hw_generic.h"
#include "hw_factory_dce120.h"
@@ -164,12 +164,12 @@ static void define_hpd_registers(struct hw_gpio_pin *pin, uint32_t en)
/* fucntion table */
static const struct hw_factory_funcs funcs = {
- .create_ddc_data = dal_hw_ddc_create,
- .create_ddc_clock = dal_hw_ddc_create,
- .create_generic = NULL,
- .create_hpd = dal_hw_hpd_create,
- .create_sync = NULL,
- .create_gsl = NULL,
+ .init_ddc_data = dal_hw_ddc_init,
+ .init_generic = NULL,
+ .init_hpd = dal_hw_hpd_init,
+ .get_ddc_pin = dal_hw_ddc_get_pin,
+ .get_hpd_pin = dal_hw_hpd_get_pin,
+ .get_generic_pin = NULL,
.define_hpd_registers = define_hpd_registers,
.define_ddc_registers = define_ddc_registers
};
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dce80/hw_factory_dce80.c b/drivers/gpu/drm/amd/display/dc/gpio/dce80/hw_factory_dce80.c
index 48b67866377e..496d3ffb74bb 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dce80/hw_factory_dce80.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dce80/hw_factory_dce80.c
@@ -32,10 +32,12 @@
#include "../hw_gpio.h"
#include "../hw_ddc.h"
#include "../hw_hpd.h"
+#include "../hw_generic.h"
#include "dce/dce_8_0_d.h"
#include "dce/dce_8_0_sh_mask.h"
+
#define REG(reg_name)\
mm ## reg_name
@@ -147,12 +149,12 @@ static void define_hpd_registers(struct hw_gpio_pin *pin, uint32_t en)
}
static const struct hw_factory_funcs funcs = {
- .create_ddc_data = dal_hw_ddc_create,
- .create_ddc_clock = dal_hw_ddc_create,
- .create_generic = NULL,
- .create_hpd = dal_hw_hpd_create,
- .create_sync = NULL,
- .create_gsl = NULL,
+ .init_ddc_data = dal_hw_ddc_init,
+ .init_generic = NULL,
+ .init_hpd = dal_hw_hpd_init,
+ .get_ddc_pin = dal_hw_ddc_get_pin,
+ .get_hpd_pin = dal_hw_hpd_get_pin,
+ .get_generic_pin = NULL,
.define_hpd_registers = define_hpd_registers,
.define_ddc_registers = define_ddc_registers
};
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn10/hw_factory_dcn10.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn10/hw_factory_dcn10.c
index 5711f30cf848..b38c96c9fed3 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dcn10/hw_factory_dcn10.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn10/hw_factory_dcn10.c
@@ -196,12 +196,12 @@ static void define_hpd_registers(struct hw_gpio_pin *pin, uint32_t en)
/* fucntion table */
static const struct hw_factory_funcs funcs = {
- .create_ddc_data = dal_hw_ddc_create,
- .create_ddc_clock = dal_hw_ddc_create,
- .create_generic = dal_hw_generic_create,
- .create_hpd = dal_hw_hpd_create,
- .create_sync = NULL,
- .create_gsl = NULL,
+ .init_ddc_data = dal_hw_ddc_init,
+ .init_generic = dal_hw_generic_init,
+ .init_hpd = dal_hw_hpd_init,
+ .get_ddc_pin = dal_hw_ddc_get_pin,
+ .get_hpd_pin = dal_hw_hpd_get_pin,
+ .get_generic_pin = dal_hw_generic_get_pin,
.define_hpd_registers = define_hpd_registers,
.define_ddc_registers = define_ddc_registers,
.define_generic_registers = define_generic_registers
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
index afb7c0f111bf..43a440385b43 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
@@ -212,12 +212,12 @@ static void define_generic_registers(struct hw_gpio_pin *pin, uint32_t en)
/* fucntion table */
static const struct hw_factory_funcs funcs = {
- .create_ddc_data = dal_hw_ddc_create,
- .create_ddc_clock = dal_hw_ddc_create,
- .create_generic = dal_hw_generic_create,
- .create_hpd = dal_hw_hpd_create,
- .create_sync = NULL,
- .create_gsl = NULL,
+ .init_ddc_data = dal_hw_ddc_init,
+ .init_generic = dal_hw_generic_init,
+ .init_hpd = dal_hw_hpd_init,
+ .get_ddc_pin = dal_hw_ddc_get_pin,
+ .get_hpd_pin = dal_hw_hpd_get_pin,
+ .get_generic_pin = dal_hw_generic_get_pin,
.define_hpd_registers = define_hpd_registers,
.define_ddc_registers = define_ddc_registers,
.define_generic_registers = define_generic_registers,
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/diagnostics/hw_factory_diag.c b/drivers/gpu/drm/amd/display/dc/gpio/diagnostics/hw_factory_diag.c
index f15288c3986e..df68430aeb0c 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/diagnostics/hw_factory_diag.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/diagnostics/hw_factory_diag.c
@@ -42,12 +42,9 @@
/* function table */
static const struct hw_factory_funcs funcs = {
- .create_ddc_data = NULL,
- .create_ddc_clock = NULL,
- .create_generic = NULL,
- .create_hpd = NULL,
- .create_sync = NULL,
- .create_gsl = NULL,
+ .init_ddc_data = NULL,
+ .init_generic = NULL,
+ .init_hpd = NULL,
};
void dal_hw_factory_diag_fpga_init(struct hw_factory *factory)
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c
index cf76ea2d9f5a..c6f1a7c3affd 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c
@@ -65,10 +65,14 @@ enum gpio_result dal_gpio_open_ex(
return GPIO_RESULT_ALREADY_OPENED;
}
+ // No action if allocation failed during gpio construct
+ if (!gpio->hw_container.ddc) {
+ ASSERT_CRITICAL(false);
+ return GPIO_RESULT_NON_SPECIFIC_ERROR;
+ }
gpio->mode = mode;
- return dal_gpio_service_open(
- gpio->service, gpio->id, gpio->en, mode, &gpio->pin);
+ return dal_gpio_service_open(gpio);
}
enum gpio_result dal_gpio_get_value(
@@ -229,6 +233,21 @@ enum gpio_pin_output_state dal_gpio_get_output_state(
return gpio->output_state;
}
+struct hw_ddc *dal_gpio_get_ddc(struct gpio *gpio)
+{
+ return gpio->hw_container.ddc;
+}
+
+struct hw_hpd *dal_gpio_get_hpd(struct gpio *gpio)
+{
+ return gpio->hw_container.hpd;
+}
+
+struct hw_generic *dal_gpio_get_generic(struct gpio *gpio)
+{
+ return gpio->hw_container.generic;
+}
+
void dal_gpio_close(
struct gpio *gpio)
{
@@ -265,6 +284,30 @@ struct gpio *dal_gpio_create(
gpio->mode = GPIO_MODE_UNKNOWN;
gpio->output_state = output_state;
+ //initialize hw_container union based on id
+ switch (gpio->id) {
+ case GPIO_ID_DDC_DATA:
+ gpio->service->factory.funcs->init_ddc_data(&gpio->hw_container.ddc, service->ctx, id, en);
+ break;
+ case GPIO_ID_DDC_CLOCK:
+ gpio->service->factory.funcs->init_ddc_data(&gpio->hw_container.ddc, service->ctx, id, en);
+ break;
+ case GPIO_ID_GENERIC:
+ gpio->service->factory.funcs->init_generic(&gpio->hw_container.generic, service->ctx, id, en);
+ break;
+ case GPIO_ID_HPD:
+ gpio->service->factory.funcs->init_hpd(&gpio->hw_container.hpd, service->ctx, id, en);
+ break;
+ // TODO: currently gpio for sync and gsl does not get created, might need it later
+ case GPIO_ID_SYNC:
+ break;
+ case GPIO_ID_GSL:
+ break;
+ default:
+ ASSERT_CRITICAL(false);
+ gpio->pin = NULL;
+ }
+
return gpio;
}
@@ -278,6 +321,33 @@ void dal_gpio_destroy(
dal_gpio_close(*gpio);
+ switch ((*gpio)->id) {
+ case GPIO_ID_DDC_DATA:
+ kfree((*gpio)->hw_container.ddc);
+ (*gpio)->hw_container.ddc = NULL;
+ break;
+ case GPIO_ID_DDC_CLOCK:
+ //TODO: might want to change it to init_ddc_clock
+ kfree((*gpio)->hw_container.ddc);
+ (*gpio)->hw_container.ddc = NULL;
+ break;
+ case GPIO_ID_GENERIC:
+ kfree((*gpio)->hw_container.generic);
+ (*gpio)->hw_container.generic = NULL;
+ break;
+ case GPIO_ID_HPD:
+ kfree((*gpio)->hw_container.hpd);
+ (*gpio)->hw_container.hpd = NULL;
+ break;
+ // TODO: currently gpio for sync and gsl does not get created, might need it later
+ case GPIO_ID_SYNC:
+ break;
+ case GPIO_ID_GSL:
+ break;
+ default:
+ break;
+ }
+
kfree(*gpio);
*gpio = NULL;
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
index 80f938e68285..30028223f8bc 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
@@ -288,13 +288,15 @@ enum gpio_result dal_gpio_service_unlock(
}
enum gpio_result dal_gpio_service_open(
- struct gpio_service *service,
- enum gpio_id id,
- uint32_t en,
- enum gpio_mode mode,
- struct hw_gpio_pin **ptr)
+ struct gpio *gpio)
{
- struct hw_gpio_pin *pin;
+ struct gpio_service *service = gpio->service;
+ enum gpio_id id = gpio->id;
+ uint32_t en = gpio->en;
+ enum gpio_mode mode = gpio->mode;
+
+ struct hw_gpio_pin **pin = &gpio->pin;
+
if (!service->busyness[id]) {
ASSERT_CRITICAL(false);
@@ -308,51 +310,43 @@ enum gpio_result dal_gpio_service_open(
switch (id) {
case GPIO_ID_DDC_DATA:
- pin = service->factory.funcs->create_ddc_data(
- service->ctx, id, en);
- service->factory.funcs->define_ddc_registers(pin, en);
+ *pin = service->factory.funcs->get_ddc_pin(gpio);
+ service->factory.funcs->define_ddc_registers(*pin, en);
break;
case GPIO_ID_DDC_CLOCK:
- pin = service->factory.funcs->create_ddc_clock(
- service->ctx, id, en);
- service->factory.funcs->define_ddc_registers(pin, en);
+ *pin = service->factory.funcs->get_ddc_pin(gpio);
+ service->factory.funcs->define_ddc_registers(*pin, en);
break;
case GPIO_ID_GENERIC:
- pin = service->factory.funcs->create_generic(
- service->ctx, id, en);
- service->factory.funcs->define_generic_registers(pin, en);
+ *pin = service->factory.funcs->get_generic_pin(gpio);
+ service->factory.funcs->define_generic_registers(*pin, en);
break;
case GPIO_ID_HPD:
- pin = service->factory.funcs->create_hpd(
- service->ctx, id, en);
- service->factory.funcs->define_hpd_registers(pin, en);
+ *pin = service->factory.funcs->get_hpd_pin(gpio);
+ service->factory.funcs->define_hpd_registers(*pin, en);
break;
+
+ //TODO: gsl and sync support? create_sync and create_gsl are NULL
case GPIO_ID_SYNC:
- pin = service->factory.funcs->create_sync(
- service->ctx, id, en);
- break;
case GPIO_ID_GSL:
- pin = service->factory.funcs->create_gsl(
- service->ctx, id, en);
break;
default:
ASSERT_CRITICAL(false);
return GPIO_RESULT_NON_SPECIFIC_ERROR;
}
- if (!pin) {
+ if (!*pin) {
ASSERT_CRITICAL(false);
return GPIO_RESULT_NON_SPECIFIC_ERROR;
}
- if (!pin->funcs->open(pin, mode)) {
+ if (!(*pin)->funcs->open(*pin, mode)) {
ASSERT_CRITICAL(false);
- dal_gpio_service_close(service, &pin);
+ dal_gpio_service_close(service, pin);
return GPIO_RESULT_OPEN_FAILED;
}
set_pin_busy(service, id, en);
- *ptr = pin;
return GPIO_RESULT_OK;
}
@@ -374,11 +368,10 @@ void dal_gpio_service_close(
pin->funcs->close(pin);
- pin->funcs->destroy(ptr);
+ *ptr = NULL;
}
}
-
enum dc_irq_source dal_irq_get_source(
const struct gpio *irq)
{
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h
index 0c678af75331..b9775a131ecd 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h
@@ -42,11 +42,7 @@ struct gpio_service {
};
enum gpio_result dal_gpio_service_open(
- struct gpio_service *service,
- enum gpio_id id,
- uint32_t en,
- enum gpio_mode mode,
- struct hw_gpio_pin **ptr);
+ struct gpio *gpio);
void dal_gpio_service_close(
struct gpio_service *service,
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c
index 49a99248e7f6..e1c84a2f7298 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c
@@ -25,6 +25,7 @@
#include "dm_services.h"
+#include "include/gpio_interface.h"
#include "include/gpio_types.h"
#include "hw_gpio.h"
#include "hw_ddc.h"
@@ -42,6 +43,8 @@
#define REG(reg)\
(ddc->regs->reg)
+struct gpio;
+
static void destruct(
struct hw_ddc *pin)
{
@@ -224,24 +227,29 @@ static void construct(
ddc->base.base.funcs = &funcs;
}
-struct hw_gpio_pin *dal_hw_ddc_create(
+void dal_hw_ddc_init(
+ struct hw_ddc **hw_ddc,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en)
{
- struct hw_ddc *pin;
-
if ((en < GPIO_DDC_LINE_MIN) || (en > GPIO_DDC_LINE_MAX)) {
ASSERT_CRITICAL(false);
- return NULL;
+ *hw_ddc = NULL;
}
- pin = kzalloc(sizeof(struct hw_ddc), GFP_KERNEL);
- if (!pin) {
+ *hw_ddc = kzalloc(sizeof(struct hw_ddc), GFP_KERNEL);
+ if (!*hw_ddc) {
ASSERT_CRITICAL(false);
- return NULL;
+ return;
}
- construct(pin, id, en, ctx);
- return &pin->base.base;
+ construct(*hw_ddc, id, en, ctx);
+}
+
+struct hw_gpio_pin *dal_hw_ddc_get_pin(struct gpio *gpio)
+{
+ struct hw_ddc *hw_ddc = dal_gpio_get_ddc(gpio);
+
+ return &hw_ddc->base.base;
}
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.h b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.h
index 9690e2a885d7..cc30e65df431 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.h
@@ -38,9 +38,12 @@ struct hw_ddc {
#define HW_DDC_FROM_BASE(hw_gpio) \
container_of((HW_GPIO_FROM_BASE(hw_gpio)), struct hw_ddc, base)
-struct hw_gpio_pin *dal_hw_ddc_create(
+void dal_hw_ddc_init(
+ struct hw_ddc **hw_ddc,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en);
+struct hw_gpio_pin *dal_hw_ddc_get_pin(struct gpio *gpio);
+
#endif
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.h b/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.h
index 7017c9337348..e15b037f3bcd 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.h
@@ -28,35 +28,35 @@
struct hw_gpio_pin;
struct hw_hpd;
+struct hw_ddc;
+struct hw_generic;
+struct gpio;
struct hw_factory {
uint32_t number_of_pins[GPIO_ID_COUNT];
const struct hw_factory_funcs {
- struct hw_gpio_pin *(*create_ddc_data)(
- struct dc_context *ctx,
- enum gpio_id id,
- uint32_t en);
- struct hw_gpio_pin *(*create_ddc_clock)(
- struct dc_context *ctx,
- enum gpio_id id,
- uint32_t en);
- struct hw_gpio_pin *(*create_generic)(
- struct dc_context *ctx,
- enum gpio_id id,
- uint32_t en);
- struct hw_gpio_pin *(*create_hpd)(
- struct dc_context *ctx,
- enum gpio_id id,
- uint32_t en);
- struct hw_gpio_pin *(*create_sync)(
- struct dc_context *ctx,
- enum gpio_id id,
- uint32_t en);
- struct hw_gpio_pin *(*create_gsl)(
- struct dc_context *ctx,
- enum gpio_id id,
- uint32_t en);
+ void (*init_ddc_data)(
+ struct hw_ddc **hw_ddc,
+ struct dc_context *ctx,
+ enum gpio_id id,
+ uint32_t en);
+ void (*init_generic)(
+ struct hw_generic **hw_generic,
+ struct dc_context *ctx,
+ enum gpio_id id,
+ uint32_t en);
+ void (*init_hpd)(
+ struct hw_hpd **hw_hpd,
+ struct dc_context *ctx,
+ enum gpio_id id,
+ uint32_t en);
+ struct hw_gpio_pin *(*get_hpd_pin)(
+ struct gpio *gpio);
+ struct hw_gpio_pin *(*get_ddc_pin)(
+ struct gpio *gpio);
+ struct hw_gpio_pin *(*get_generic_pin)(
+ struct gpio *gpio);
void (*define_hpd_registers)(
struct hw_gpio_pin *pin,
uint32_t en);
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c
index ea0a1fc8cf23..f039c5982ac8 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c
@@ -25,6 +25,7 @@
#include "dm_services.h"
+#include "include/gpio_interface.h"
#include "include/gpio_types.h"
#include "hw_gpio.h"
#include "hw_generic.h"
@@ -41,6 +42,8 @@
#define REG(reg)\
(generic->regs->reg)
+struct gpio;
+
static void dal_hw_generic_construct(
struct hw_generic *pin,
enum gpio_id id,
@@ -104,29 +107,30 @@ static void construct(
generic->base.base.funcs = &funcs;
}
-struct hw_gpio_pin *dal_hw_generic_create(
+void dal_hw_generic_init(
+ struct hw_generic **hw_generic,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en)
{
- struct hw_generic *generic;
-
- if (id != GPIO_ID_GENERIC) {
+ if ((en < GPIO_DDC_LINE_MIN) || (en > GPIO_DDC_LINE_MAX)) {
ASSERT_CRITICAL(false);
- return NULL;
+ *hw_generic = NULL;
}
- if ((en < GPIO_GENERIC_MIN) || (en > GPIO_GENERIC_MAX)) {
+ *hw_generic = kzalloc(sizeof(struct hw_generic), GFP_KERNEL);
+ if (!*hw_generic) {
ASSERT_CRITICAL(false);
- return NULL;
+ return;
}
- generic = kzalloc(sizeof(struct hw_generic), GFP_KERNEL);
- if (!generic) {
- ASSERT_CRITICAL(false);
- return NULL;
- }
+ construct(*hw_generic, id, en, ctx);
+}
+
+
+struct hw_gpio_pin *dal_hw_generic_get_pin(struct gpio *gpio)
+{
+ struct hw_generic *hw_generic = dal_gpio_get_generic(gpio);
- construct(generic, id, en, ctx);
- return &generic->base.base;
+ return &hw_generic->base.base;
}
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.h b/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.h
index 3ea1c13e3ea6..bd6ffeb5e9df 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.h
@@ -27,6 +27,7 @@
#define __DAL_HW_generic_H__
#include "generic_regs.h"
+#include "hw_gpio.h"
struct hw_generic {
struct hw_gpio base;
@@ -38,9 +39,12 @@ struct hw_generic {
#define HW_GENERIC_FROM_BASE(hw_gpio) \
container_of((HW_GPIO_FROM_BASE(hw_gpio)), struct hw_generic, base)
-struct hw_gpio_pin *dal_hw_generic_create(
+void dal_hw_generic_init(
+ struct hw_generic **hw_generic,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en);
+struct hw_gpio_pin *dal_hw_generic_get_pin(struct gpio *gpio);
+
#endif
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.c
index 784feccc5853..88798cf3965e 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.c
@@ -25,6 +25,7 @@
#include "dm_services.h"
+#include "include/gpio_interface.h"
#include "include/gpio_types.h"
#include "hw_gpio.h"
#include "hw_hpd.h"
@@ -41,6 +42,8 @@
#define REG(reg)\
(hpd->regs->reg)
+struct gpio;
+
static void dal_hw_hpd_construct(
struct hw_hpd *pin,
enum gpio_id id,
@@ -134,29 +137,29 @@ static void construct(
hpd->base.base.funcs = &funcs;
}
-struct hw_gpio_pin *dal_hw_hpd_create(
+void dal_hw_hpd_init(
+ struct hw_hpd **hw_hpd,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en)
{
- struct hw_hpd *hpd;
-
- if (id != GPIO_ID_HPD) {
+ if ((en < GPIO_DDC_LINE_MIN) || (en > GPIO_DDC_LINE_MAX)) {
ASSERT_CRITICAL(false);
- return NULL;
+ *hw_hpd = NULL;
}
- if ((en < GPIO_HPD_MIN) || (en > GPIO_HPD_MAX)) {
+ *hw_hpd = kzalloc(sizeof(struct hw_hpd), GFP_KERNEL);
+ if (!*hw_hpd) {
ASSERT_CRITICAL(false);
- return NULL;
+ return;
}
- hpd = kzalloc(sizeof(struct hw_hpd), GFP_KERNEL);
- if (!hpd) {
- ASSERT_CRITICAL(false);
- return NULL;
- }
+ construct(*hw_hpd, id, en, ctx);
+}
+
+struct hw_gpio_pin *dal_hw_hpd_get_pin(struct gpio *gpio)
+{
+ struct hw_hpd *hw_hpd = dal_gpio_get_hpd(gpio);
- construct(hpd, id, en, ctx);
- return &hpd->base.base;
+ return &hw_hpd->base.base;
}
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h b/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h
index 4ab7a208f781..e7d8b3bb016c 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h
@@ -38,9 +38,12 @@ struct hw_hpd {
#define HW_HPD_FROM_BASE(hw_gpio) \
container_of((HW_GPIO_FROM_BASE(hw_gpio)), struct hw_hpd, base)
-struct hw_gpio_pin *dal_hw_hpd_create(
+void dal_hw_hpd_init(
+ struct hw_hpd **hw_hpd,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en);
+struct hw_gpio_pin *dal_hw_hpd_get_pin(struct gpio *gpio);
+
#endif
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/gpio.h b/drivers/gpu/drm/amd/display/dc/inc/hw/gpio.h
index 90d0148430fb..5253dc8b15f8 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/gpio.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/gpio.h
@@ -28,12 +28,22 @@
#include "gpio_types.h"
+
+union gpio_hw_container {
+ struct hw_ddc *ddc;
+ struct hw_generic *generic;
+ struct hw_hpd *hpd;
+};
+
struct gpio {
struct gpio_service *service;
struct hw_gpio_pin *pin;
enum gpio_id id;
uint32_t en;
+
+ union gpio_hw_container hw_container;
enum gpio_mode mode;
+
/* when GPIO comes from VBIOS, it has defined output state */
enum gpio_pin_output_state output_state;
};
diff --git a/drivers/gpu/drm/amd/display/include/gpio_interface.h b/drivers/gpu/drm/amd/display/include/gpio_interface.h
index 7de64195dc33..5e888a093c16 100644
--- a/drivers/gpu/drm/amd/display/include/gpio_interface.h
+++ b/drivers/gpu/drm/amd/display/include/gpio_interface.h
@@ -93,8 +93,17 @@ enum sync_source dal_gpio_get_sync_source(
enum gpio_pin_output_state dal_gpio_get_output_state(
const struct gpio *gpio);
+struct hw_ddc *dal_gpio_get_ddc(struct gpio *gpio);
+
+struct hw_hpd *dal_gpio_get_hpd(struct gpio *gpio);
+
+struct hw_generic *dal_gpio_get_generic(struct gpio *gpio);
+
/* Close the handle */
void dal_gpio_close(
struct gpio *gpio);
+
+
+
#endif
--
2.22.0
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