xenua
/
zmk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Add support to GPIO matrix driver for matrix polling, rather than interrupt-based IO. 

- Add ZMK_KSCAN_MATRIX_POLLING config flag to Kconfig
  - Update matrix driver code to use the above flag to conditionally add the handling code for polling operations.
xmkb
Jason Chestnut 4 years ago
parent
7b53ee51fc
commit
cca8337f05
5 changed files with 64 additions and 30 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 3
      app/boards/arm/planck/Kconfig.defconfig
  2. 2
      app/boards/shields/clueboard_california/Kconfig.defconfig
  3. 8
      app/drivers/zephyr/Kconfig
  4. 18
      app/drivers/zephyr/kscan_gpio_direct.c
  5. 63
      app/drivers/zephyr/kscan_gpio_matrix.c

3
app/boards/arm/planck/Kconfig.defconfig
Unescape View File

@ -11,4 +11,7 @@ config ZMK_KEYBOARD_NAME @@ -11,4 +11,7 @@ config ZMK_KEYBOARD_NAME
config ZMK_USB
default y
config ZMK_KSCAN_MATRIX_POLLING
default y
endif # BOARD_PLANCK_REV6

2
app/boards/shields/clueboard_california/Kconfig.defconfig
Unescape View File

@ -8,7 +8,7 @@ config ZMK_KEYBOARD_NAME @@ -8,7 +8,7 @@ config ZMK_KEYBOARD_NAME
# across A & B controllers, and STM32F303CCT6 can't enable
# interrutps for multiple controllers for the same "line"
# for the external interrupts.
config ZMK_KSCAN_GPIO_POLLING
config ZMK_KSCAN_DIRECT_POLLING
default y
endif

8
app/drivers/zephyr/Kconfig
Unescape View File

@ -5,10 +5,14 @@ config ZMK_KSCAN_GPIO_DRIVER @@ -5,10 +5,14 @@ config ZMK_KSCAN_GPIO_DRIVER
if ZMK_KSCAN_GPIO_DRIVER
config ZMK_KSCAN_GPIO_POLLING
bool "Poll for key event triggers instead of using interrupts"
config ZMK_KSCAN_MATRIX_POLLING
bool "Poll for key event triggers instead of using interrupts on matrix boards."
default n
config ZMK_KSCAN_DIRECT_POLLING
bool "Poll for key event triggers instead of using interrupts on direct wired boards."
default n
endif
config ZMK_KSCAN_INIT_PRIORITY

18
app/drivers/zephyr/kscan_gpio_direct.c
Unescape View File

@ -33,9 +33,9 @@ struct kscan_gpio_config { @@ -33,9 +33,9 @@ struct kscan_gpio_config {
};
struct kscan_gpio_data {
#if defined(CONFIG_ZMK_KSCAN_GPIO_POLLING)
#if defined(ZMK_KSCAN_DIRECT_POLLING)
struct k_timer poll_timer;
#endif /* defined(CONFIG_ZMK_KSCAN_GPIO_POLLING) */
#endif /* defined(ZMK_KSCAN_DIRECT_POLLING) */
kscan_callback_t callback;
union work_reference work;
struct device *dev;
@ -53,7 +53,7 @@ static const struct kscan_gpio_item_config *kscan_gpio_input_configs(struct devi @@ -53,7 +53,7 @@ static const struct kscan_gpio_item_config *kscan_gpio_input_configs(struct devi
return cfg->inputs;
}
#if !defined(CONFIG_ZMK_KSCAN_GPIO_POLLING)
#if !defined(ZMK_KSCAN_DIRECT_POLLING)
struct kscan_gpio_irq_callback {
union work_reference *work;
@ -101,7 +101,7 @@ static void kscan_gpio_irq_callback_handler(struct device *dev, struct gpio_call @@ -101,7 +101,7 @@ static void kscan_gpio_irq_callback_handler(struct device *dev, struct gpio_call
}
}
#else /* !defined(CONFIG_ZMK_KSCAN_GPIO_POLLING) */
#else /* !defined(ZMK_KSCAN_DIRECT_POLLING) */
static void kscan_gpio_timer_handler(struct k_timer *timer) {
struct kscan_gpio_data *data = CONTAINER_OF(timer, struct kscan_gpio_data, poll_timer);
@ -120,7 +120,7 @@ static int kscan_gpio_direct_disable(struct device *dev) { @@ -120,7 +120,7 @@ static int kscan_gpio_direct_disable(struct device *dev) {
return 0;
}
#endif /* defined(CONFIG_ZMK_KSCAN_GPIO_POLLING) */
#endif /* defined(ZMK_KSCAN_DIRECT_POLLING) */
static int kscan_gpio_direct_configure(struct device *dev, kscan_callback_t callback) {
struct kscan_gpio_data *data = dev->driver_data;
@ -173,7 +173,7 @@ static const struct kscan_driver_api gpio_driver_api = { @@ -173,7 +173,7 @@ static const struct kscan_driver_api gpio_driver_api = {
#define INST_INPUT_LEN(n) DT_INST_PROP_LEN(n, input_gpios)
#define GPIO_INST_INIT(n) \
COND_CODE_0(CONFIG_ZMK_KSCAN_GPIO_POLLING, \
COND_CODE_0(ZMK_KSCAN_DIRECT_POLLING, \
(static struct kscan_gpio_irq_callback irq_callbacks_##n[INST_INPUT_LEN(n)];), ()) \
static struct kscan_gpio_data kscan_gpio_data_##n = { \
.inputs = {[INST_INPUT_LEN(n) - 1] = NULL}}; \
@ -195,7 +195,7 @@ static const struct kscan_driver_api gpio_driver_api = { @@ -195,7 +195,7 @@ static const struct kscan_driver_api gpio_driver_api = {
return err; \
} \
COND_CODE_0( \
CONFIG_ZMK_KSCAN_GPIO_POLLING, \
ZMK_KSCAN_DIRECT_POLLING, \
(irq_callbacks_##n[i].work = &data->work; \
irq_callbacks_##n[i].debounce_period = cfg->debounce_period; \
gpio_init_callback(&irq_callbacks_##n[i].callback, \
@ -208,7 +208,7 @@ static const struct kscan_driver_api gpio_driver_api = { @@ -208,7 +208,7 @@ static const struct kscan_driver_api gpio_driver_api = {
()) \
} \
data->dev = dev; \
COND_CODE_1(CONFIG_ZMK_KSCAN_GPIO_POLLING, \
COND_CODE_1(ZMK_KSCAN_DIRECT_POLLING, \
(k_timer_init(&data->poll_timer, kscan_gpio_timer_handler, NULL);), ()) \
if (cfg->debounce_period > 0) { \
k_delayed_work_init(&data->work.delayed, kscan_gpio_work_handler); \
@ -227,4 +227,4 @@ static const struct kscan_driver_api gpio_driver_api = { @@ -227,4 +227,4 @@ static const struct kscan_driver_api gpio_driver_api = {
DT_INST_FOREACH_STATUS_OKAY(GPIO_INST_INIT)
#endif /* DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT) */
#endif /* DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT) */

63
app/drivers/zephyr/kscan_gpio_matrix.c
Unescape View File

@ -31,7 +31,8 @@ struct kscan_gpio_item_config { @@ -31,7 +31,8 @@ struct kscan_gpio_item_config {
#define _KSCAN_GPIO_ROW_CFG_INIT(idx, n) _KSCAN_GPIO_ITEM_CFG_INIT(n, row_gpios, idx)
#define _KSCAN_GPIO_COL_CFG_INIT(idx, n) _KSCAN_GPIO_ITEM_CFG_INIT(n, col_gpios, idx)
static int kscan_gpio_config_interrupts(struct device **devices,
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING,
(static int kscan_gpio_config_interrupts(struct device **devices,
const struct kscan_gpio_item_config *configs, size_t len,
gpio_flags_t flags) {
for (int i = 0; i < len; i++) {
@ -47,7 +48,8 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -47,7 +48,8 @@ static int kscan_gpio_config_interrupts(struct device **devices,
}
return 0;
}
}), ())
#define INST_MATRIX_ROWS(n) DT_INST_PROP_LEN(n, row_gpios)
#define INST_MATRIX_COLS(n) DT_INST_PROP_LEN(n, col_gpios)
#define INST_OUTPUT_LEN(n) \
@ -69,6 +71,7 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -69,6 +71,7 @@ static int kscan_gpio_config_interrupts(struct device **devices,
}; \
struct kscan_gpio_data_##n { \
kscan_callback_t callback; \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, (), (struct k_timer poll_timer;)) \
struct COND_CODE_0(DT_INST_PROP(n, debounce_period), (k_work), (k_delayed_work)) work; \
bool matrix_state[INST_MATRIX_ROWS(n)][INST_MATRIX_COLS(n)]; \
struct device *rows[INST_MATRIX_ROWS(n)]; \
@ -96,16 +99,17 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -96,16 +99,17 @@ static int kscan_gpio_config_interrupts(struct device **devices,
return ( \
COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (cfg->rows), (cfg->cols))); \
} \
static int kscan_gpio_enable_interrupts_##n(struct device *dev) { \
return kscan_gpio_config_interrupts(kscan_gpio_input_devices_##n(dev), \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, \
(static int kscan_gpio_enable_interrupts_##n(struct device *dev) { \
return kscan_gpio_config_interrupts(kscan_gpio_input_devices_##n(dev), \
kscan_gpio_input_configs_##n(dev), INST_INPUT_LEN(n), \
GPIO_INT_DEBOUNCE | GPIO_INT_EDGE_BOTH); \
} \
static int kscan_gpio_disable_interrupts_##n(struct device *dev) { \
return kscan_gpio_config_interrupts(kscan_gpio_input_devices_##n(dev), \
} \
static int kscan_gpio_disable_interrupts_##n(struct device *dev) { \
return kscan_gpio_config_interrupts(kscan_gpio_input_devices_##n(dev), \
kscan_gpio_input_configs_##n(dev), INST_INPUT_LEN(n), \
GPIO_INT_DISABLE); \
} \
}), ()) \
static void kscan_gpio_set_output_state_##n(struct device *dev, int value) { \
for (int i = 0; i < INST_OUTPUT_LEN(n); i++) { \
struct device *in_dev = kscan_gpio_output_devices_##n(dev)[i]; \
@ -128,7 +132,8 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -128,7 +132,8 @@ static int kscan_gpio_config_interrupts(struct device **devices,
/* Disable our interrupts temporarily while we scan, to avoid */ \
/* re-entry while we iterate columns and set them active one by one */ \
/* to get pressed state for each matrix cell. */ \
kscan_gpio_disable_interrupts_##n(dev); \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, \
(kscan_gpio_disable_interrupts_##n(dev);),()) \
kscan_gpio_set_output_state_##n(dev, 0); \
for (int o = 0; o < INST_OUTPUT_LEN(n); o++) { \
struct device *out_dev = kscan_gpio_output_devices_##n(dev)[o]; \
@ -143,10 +148,11 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -143,10 +148,11 @@ static int kscan_gpio_config_interrupts(struct device **devices,
} \
gpio_pin_set(out_dev, out_cfg->pin, 0); \
} \
/* Set all our outputs as active again, then re-enable interrupts, */ \
/* so we can trigger interrupts again for future press/release */ \
/* Set all our outputs as active again. */ \
kscan_gpio_set_output_state_##n(dev, 1); \
kscan_gpio_enable_interrupts_##n(dev); \
/*Re-enable interrupts so that they can be triggered again for future press/release*/ \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, \
(kscan_gpio_enable_interrupts_##n(dev);), ()) \
for (int r = 0; r < INST_MATRIX_ROWS(n); r++) { \
for (int c = 0; c < INST_MATRIX_COLS(n); c++) { \
bool pressed = read_state[r][c]; \
@ -193,12 +199,29 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -193,12 +199,29 @@ static int kscan_gpio_config_interrupts(struct device **devices,
return 0; \
}; \
static int kscan_gpio_enable_##n(struct device *dev) { \
int err = kscan_gpio_enable_interrupts_##n(dev); \
if (err) { \
return err; \
} \
return kscan_gpio_read_##n(dev); \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, \
(int err = kscan_gpio_enable_interrupts_##n(dev); \
if (err) { \
return err; \
} \
return kscan_gpio_read_##n(dev);), \
(struct kscan_gpio_data_##n *data = dev->driver_data; \
k_timer_start(&data->poll_timer, K_MSEC(10), K_MSEC(10)); \
return 0;)) \
}; \
static int kscan_gpio_disable_##n(struct device *dev) { \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, \
(return kscan_gpio_disable_interrupts_##n(dev);), \
(struct kscan_gpio_data_##n *data = dev->driver_data; \
k_timer_stop(&data->poll_timer); \
return 0;)) \
}; \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, (), \
(static void kscan_gpio_timer_handler(struct k_timer *timer) { \
struct kscan_gpio_data_##n *data = \
CONTAINER_OF(timer, struct kscan_gpio_data_##n, poll_timer); \
k_work_submit(&data->work.work); \
})) \
static int kscan_gpio_init_##n(struct device *dev) { \
struct kscan_gpio_data_##n *data = dev->driver_data; \
int err; \
@ -214,6 +237,8 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -214,6 +237,8 @@ static int kscan_gpio_config_interrupts(struct device **devices,
if (err) { \
LOG_ERR("Unable to configure pin %d on %s for input", in_cfg->pin, in_cfg->label); \
return err; \
} else { \
LOG_DBG("Configured pin %d on %s for input", in_cfg->pin, in_cfg->label); \
} \
irq_callbacks_##n[i].work = &data->work; \
gpio_init_callback(&irq_callbacks_##n[i].callback, \
@ -241,6 +266,8 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -241,6 +266,8 @@ static int kscan_gpio_config_interrupts(struct device **devices,
} \
} \
data->dev = dev; \
COND_CODE_0(ZMK_KSCAN_MATRIX_POLLING, (), \
(k_timer_init(&data->poll_timer, kscan_gpio_timer_handler, NULL);)) \
(COND_CODE_0(DT_INST_PROP(n, debounce_period), (k_work_init), (k_delayed_work_init)))( \
&data->work, kscan_gpio_work_handler_##n); \
return 0; \
@ -248,7 +275,7 @@ static int kscan_gpio_config_interrupts(struct device **devices, @@ -248,7 +275,7 @@ static int kscan_gpio_config_interrupts(struct device **devices,
static const struct kscan_driver_api gpio_driver_api_##n = { \
.config = kscan_gpio_configure_##n, \
.enable_callback = kscan_gpio_enable_##n, \
.disable_callback = kscan_gpio_disable_interrupts_##n, \
.disable_callback = kscan_gpio_disable_##n, \
}; \
static const struct kscan_gpio_config_##n kscan_gpio_config_##n = { \
.rows = {UTIL_LISTIFY(INST_MATRIX_ROWS(n), _KSCAN_GPIO_ROW_CFG_INIT, n)}, \

Write Preview
Loading…
Cancel
Save