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path: root/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
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Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c')
-rw-r--r--drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c65
1 files changed, 18 insertions, 47 deletions
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 f20161c5706d..dada04296025 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
@@ -56,7 +56,6 @@ struct gpio_service *dal_gpio_service_create(
struct dc_context *ctx)
{
struct gpio_service *service;
-
uint32_t index_of_id;
service = kzalloc(sizeof(struct gpio_service), GFP_KERNEL);
@@ -78,44 +77,33 @@ struct gpio_service *dal_gpio_service_create(
goto failure_1;
}
- /* allocate and initialize business storage */
+ /* allocate and initialize busyness storage */
{
- const uint32_t bits_per_uint = sizeof(uint32_t) << 3;
-
index_of_id = 0;
service->ctx = ctx;
do {
uint32_t number_of_bits =
service->factory.number_of_pins[index_of_id];
+ uint32_t i = 0;
- uint32_t number_of_uints =
- (number_of_bits + bits_per_uint - 1) /
- bits_per_uint;
-
- uint32_t *slot;
-
- if (number_of_bits) {
- uint32_t index_of_uint = 0;
+ if (number_of_bits) {
+ service->busyness[index_of_id] =
+ kcalloc(number_of_bits, sizeof(char),
+ GFP_KERNEL);
- slot = kcalloc(number_of_uints,
- sizeof(uint32_t),
- GFP_KERNEL);
-
- if (!slot) {
+ if (!service->busyness[index_of_id]) {
BREAK_TO_DEBUGGER();
goto failure_2;
}
do {
- slot[index_of_uint] = 0;
-
- ++index_of_uint;
- } while (index_of_uint < number_of_uints);
- } else
- slot = NULL;
-
- service->busyness[index_of_id] = slot;
+ service->busyness[index_of_id][i] = 0;
+ ++i;
+ } while (i < number_of_bits);
+ } else {
+ service->busyness[index_of_id] = NULL;
+ }
++index_of_id;
} while (index_of_id < GPIO_ID_COUNT);
@@ -125,13 +113,8 @@ struct gpio_service *dal_gpio_service_create(
failure_2:
while (index_of_id) {
- uint32_t *slot;
-
--index_of_id;
-
- slot = service->busyness[index_of_id];
-
- kfree(slot);
+ kfree(service->busyness[index_of_id]);
}
failure_1:
@@ -169,9 +152,7 @@ void dal_gpio_service_destroy(
uint32_t index_of_id = 0;
do {
- uint32_t *slot = (*ptr)->busyness[index_of_id];
-
- kfree(slot);
+ kfree((*ptr)->busyness[index_of_id]);
++index_of_id;
} while (index_of_id < GPIO_ID_COUNT);
@@ -192,11 +173,7 @@ static bool is_pin_busy(
enum gpio_id id,
uint32_t en)
{
- const uint32_t bits_per_uint = sizeof(uint32_t) << 3;
-
- const uint32_t *slot = service->busyness[id] + (en / bits_per_uint);
-
- return 0 != (*slot & (1 << (en % bits_per_uint)));
+ return service->busyness[id][en];
}
static void set_pin_busy(
@@ -204,10 +181,7 @@ static void set_pin_busy(
enum gpio_id id,
uint32_t en)
{
- const uint32_t bits_per_uint = sizeof(uint32_t) << 3;
-
- service->busyness[id][en / bits_per_uint] |=
- (1 << (en % bits_per_uint));
+ service->busyness[id][en] = true;
}
static void set_pin_free(
@@ -215,10 +189,7 @@ static void set_pin_free(
enum gpio_id id,
uint32_t en)
{
- const uint32_t bits_per_uint = sizeof(uint32_t) << 3;
-
- service->busyness[id][en / bits_per_uint] &=
- ~(1 << (en % bits_per_uint));
+ service->busyness[id][en] = false;
}
enum gpio_result dal_gpio_service_open(