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@ -13,16 +13,6 @@
@@ -13,16 +13,6 @@
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL); |
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#define MATRIX_NODE_ID DT_DRV_INST(0) |
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#define MATRIX_ROWS DT_PROP_LEN(MATRIX_NODE_ID, row_gpios) |
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#define MATRIX_COLS DT_PROP_LEN(MATRIX_NODE_ID, col_gpios) |
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#if DT_ENUM_IDX(MATRIX_NODE_ID, diode_direction) == 0 |
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#define SCAN_ROW_TO_COLUMN |
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#else |
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#define SCAN_COL_TO_ROW |
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#endif |
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struct kscan_gpio_item_config |
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{ |
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char *label; |
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@ -30,36 +20,12 @@ struct kscan_gpio_item_config
@@ -30,36 +20,12 @@ struct kscan_gpio_item_config
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gpio_flags_t flags; |
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}; |
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struct kscan_gpio_config |
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{ |
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u8_t debounce_period; |
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struct kscan_gpio_item_config rows[MATRIX_ROWS]; |
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struct kscan_gpio_item_config cols[MATRIX_COLS]; |
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}; |
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struct kscan_gpio_data |
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{ |
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kscan_callback_t callback; |
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#if DT_PROP(MATRIX_NODE_ID, debounce_id) == 0 |
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struct k_work work; |
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#else |
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struct k_delayed_work work; |
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#endif |
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bool matrix_state[MATRIX_ROWS][MATRIX_COLS]; |
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struct device *rows[MATRIX_ROWS]; |
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struct device *cols[MATRIX_COLS]; |
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struct device *dev; |
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}; |
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struct kscan_gpio_irq_callback |
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{ |
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#if DT_PROP(MATRIX_NODE_ID, debounce_id) == 0 |
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struct k_work *work; |
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#else |
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struct k_delayed_work *work; |
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#endif |
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struct gpio_callback callback; |
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}; |
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#define _KSCAN_GPIO_ITEM_CFG_INIT(n, prop, idx) \ |
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{ \
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.label = DT_INST_GPIO_LABEL_BY_IDX(n, prop, idx), \
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.pin = DT_INST_GPIO_PIN_BY_IDX(n, prop, idx), \
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.flags = DT_INST_GPIO_FLAGS_BY_IDX(n, prop, idx), \
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}, |
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static int kscan_gpio_config_interrupts(struct device **devices, |
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const struct kscan_gpio_item_config *configs, |
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@ -81,436 +47,210 @@ static int kscan_gpio_config_interrupts(struct device **devices,
@@ -81,436 +47,210 @@ static int kscan_gpio_config_interrupts(struct device **devices,
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return 0; |
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} |
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#ifdef SCAN_ROW_TO_COLUMN |
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static struct kscan_gpio_irq_callback irq_callbacks[MATRIX_COLS]; |
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static int kscan_gpio_enable_interrupts(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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return kscan_gpio_config_interrupts( |
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data->cols, cfg->cols, MATRIX_COLS, |
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GPIO_INT_DEBOUNCE | GPIO_INT_EDGE_BOTH); |
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} |
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static int kscan_gpio_disable_interrupts(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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return kscan_gpio_config_interrupts( |
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data->cols, cfg->cols, MATRIX_COLS, |
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GPIO_INT_DISABLE); |
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} |
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static void kscan_gpio_set_row_state(struct device *dev, int value) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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for (int r = 0; r < MATRIX_ROWS; r++) |
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{ |
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struct device *row = data->rows[r]; |
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const struct kscan_gpio_item_config *row_cfg = &cfg->rows[r]; |
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gpio_pin_set(row, row_cfg->pin, value); |
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} |
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} |
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static int kscan_gpio_read(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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static bool read_state[MATRIX_ROWS][MATRIX_COLS]; |
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LOG_DBG("Scanning the matrix for updated state"); |
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/* Disable our interrupts temporarily while we scan, to avoid */ |
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/* re-entry while we iterate columns and set them active one by one */ |
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/* to get pressed state for each matrix cell. */ |
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kscan_gpio_disable_interrupts(dev); |
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kscan_gpio_set_row_state(dev, 0); |
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for (int r = 0; r < MATRIX_ROWS; r++) |
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{ |
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struct device *row = data->rows[r]; |
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const struct kscan_gpio_item_config *row_cfg = &cfg->rows[r]; |
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gpio_pin_set(row, row_cfg->pin, 1); |
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for (int c = 0; c < MATRIX_COLS; c++) |
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{ |
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struct device *col = data->cols[c]; |
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const struct kscan_gpio_item_config *col_cfg = &cfg->cols[c]; |
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read_state[r][c] = |
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gpio_pin_get(col, col_cfg->pin) > 0; |
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} |
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gpio_pin_set(row, row_cfg->pin, 0); |
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} |
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/* Set all our outputs as active again, then re-enable interrupts, */ |
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/* so we can trigger interrupts again for future press/release */ |
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kscan_gpio_set_row_state(dev, 1); |
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kscan_gpio_enable_interrupts(dev); |
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for (int r = 0; r < MATRIX_ROWS; r++) |
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{ |
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for (int c = 0; c < MATRIX_COLS; c++) |
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{ |
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bool pressed = read_state[r][c]; |
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if (pressed != data->matrix_state[r][c]) |
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{ |
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LOG_DBG("Sending event at %d,%d state %s", |
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r, c, (pressed ? "on" : "off")); |
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data->matrix_state[r][c] = pressed; |
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data->callback(dev, r, c, pressed); |
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} |
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} |
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} |
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return 0; |
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} |
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#else |
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static struct kscan_gpio_irq_callback irq_callbacks[MATRIX_ROWS]; |
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static int kscan_gpio_enable_interrupts(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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return kscan_gpio_config_interrupts(data->rows, cfg->rows, MATRIX_ROWS, |
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GPIO_INT_DEBOUNCE | GPIO_INT_EDGE_BOTH); |
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} |
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static int kscan_gpio_disable_interrupts(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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return kscan_gpio_config_interrupts(data->rows, cfg->rows, MATRIX_ROWS, |
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GPIO_INT_DISABLE); |
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} |
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static void kscan_gpio_set_column_state(struct device *dev, int value) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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for (int c = 0; c < MATRIX_COLS; c++) |
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{ |
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struct device *col = data->cols[c]; |
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const struct kscan_gpio_item_config *col_cfg = &cfg->cols[c]; |
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gpio_pin_set(col, col_cfg->pin, value); |
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} |
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} |
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static int kscan_gpio_read(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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static bool read_state[MATRIX_ROWS][MATRIX_COLS]; |
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LOG_DBG("Scanning the matrix for updated state"); |
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/* Disable our interrupts temporarily while we scan, to avoid */ |
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/* re-entry while we iterate columns and set them active one by one */ |
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/* to get pressed state for each matrix cell. */ |
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kscan_gpio_disable_interrupts(dev); |
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kscan_gpio_set_column_state(dev, 0); |
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for (int c = 0; c < MATRIX_COLS; c++) |
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{ |
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struct device *col = data->cols[c]; |
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const struct kscan_gpio_item_config *col_cfg = &cfg->cols[c]; |
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gpio_pin_set(col, col_cfg->pin, 1); |
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for (int r = 0; r < MATRIX_ROWS; r++) |
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{ |
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struct device *row = data->rows[r]; |
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const struct kscan_gpio_item_config *row_cfg = &cfg->rows[r]; |
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read_state[r][c] = |
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gpio_pin_get(row, row_cfg->pin) > 0; |
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} |
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gpio_pin_set(col, col_cfg->pin, 0); |
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} |
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/* Set all our outputs as active again, then re-enable interrupts, */ |
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/* so we can trigger interrupts again for future press/release */ |
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kscan_gpio_set_column_state(dev, 1); |
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kscan_gpio_enable_interrupts(dev); |
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for (int r = 0; r < MATRIX_ROWS; r++) |
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{ |
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for (int c = 0; c < MATRIX_COLS; c++) |
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{ |
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bool pressed = read_state[r][c]; |
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if (pressed != data->matrix_state[r][c]) |
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{ |
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LOG_DBG("Sending event at %d,%d state %s", |
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r, c, (pressed ? "on" : "off")); |
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data->matrix_state[r][c] = pressed; |
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data->callback(dev, r, c, pressed); |
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} |
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} |
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} |
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return 0; |
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} |
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#endif |
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static void kscan_gpio_irq_callback_handler(struct device *dev, |
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struct gpio_callback *cb, gpio_port_pins_t pin) |
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{ |
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struct kscan_gpio_irq_callback *data = |
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CONTAINER_OF(cb, struct kscan_gpio_irq_callback, callback); |
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#if DT_PROP(MATRIX_NODE_ID, debounce_id) == 0 |
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k_work_submit(data->work); |
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#else |
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k_delayed_work_cancel(data->work); |
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k_delayed_work_submit(data->work, |
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K_MSEC(DT_PROP(MATRIX_NODE_ID, debounce_id))); |
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#endif |
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} |
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static void kscan_gpio_work_handler(struct k_work *work) |
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{ |
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struct kscan_gpio_data *data = |
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CONTAINER_OF(work, struct kscan_gpio_data, work); |
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kscan_gpio_read(data->dev); |
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} |
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static int kscan_gpio_configure(struct device *dev, kscan_callback_t callback) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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if (!callback) |
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{ |
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return -EINVAL; |
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} |
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data->callback = callback; |
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return 0; |
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} |
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static int kscan_gpio_init(struct device *dev) |
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{ |
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struct kscan_gpio_data *data = dev->driver_data; |
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const struct kscan_gpio_config *cfg = dev->config_info; |
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int err; |
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#ifdef SCAN_ROW_TO_COLUMN |
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gpio_flags_t col_gpio_dir = GPIO_INPUT; |
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gpio_flags_t row_gpio_dir = GPIO_OUTPUT_ACTIVE; |
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#else |
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gpio_flags_t col_gpio_dir = GPIO_OUTPUT_ACTIVE; |
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gpio_flags_t row_gpio_dir = GPIO_INPUT; |
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#endif |
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for (int c = 0; c < MATRIX_COLS; c++) |
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{ |
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const struct kscan_gpio_item_config *item_cfg = &cfg->cols[c]; |
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data->cols[c] = device_get_binding(item_cfg->label); |
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if (data->cols[c] == NULL) |
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{ |
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LOG_ERR("Unable to find column GPIO device\n"); |
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return -EINVAL; |
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} |
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err = gpio_pin_configure(data->cols[c], |
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item_cfg->pin, |
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col_gpio_dir | item_cfg->flags); |
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if (err) |
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{ |
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LOG_ERR("Unable to configure column GPIO pin"); |
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return -EINVAL; |
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} |
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#ifdef SCAN_ROW_TO_COLUMN |
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irq_callbacks[c].work = &data->work; |
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gpio_init_callback(&irq_callbacks[c].callback, |
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kscan_gpio_irq_callback_handler, |
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BIT(item_cfg->pin)); |
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if (gpio_add_callback(data->cols[c], &irq_callbacks[c].callback)) |
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{ |
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LOG_ERR("Error adding the callback to the column device"); |
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} |
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#endif |
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} |
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for (int r = 0; r < MATRIX_ROWS; r++) |
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{ |
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const struct kscan_gpio_item_config *item_cfg = &cfg->rows[r]; |
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data->rows[r] = device_get_binding(item_cfg->label); |
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if (data->rows[r] == NULL) |
|
|
|
|
{ |
|
|
|
|
LOG_ERR("Unable to find row GPIO device\n"); |
|
|
|
|
return -EINVAL; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
int err = gpio_pin_configure(data->rows[r], |
|
|
|
|
item_cfg->pin, |
|
|
|
|
row_gpio_dir | item_cfg->flags); |
|
|
|
|
if (err) |
|
|
|
|
{ |
|
|
|
|
LOG_ERR("Unable to configure row GPIO pin"); |
|
|
|
|
return -EINVAL; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
#ifdef SCAN_COL_TO_ROW |
|
|
|
|
irq_callbacks[r].work = &data->work; |
|
|
|
|
gpio_init_callback(&irq_callbacks[r].callback, |
|
|
|
|
kscan_gpio_irq_callback_handler, |
|
|
|
|
BIT(item_cfg->pin)); |
|
|
|
|
gpio_add_callback(data->rows[r], &irq_callbacks[r].callback); |
|
|
|
|
#endif |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
data->dev = dev; |
|
|
|
|
|
|
|
|
|
#if DT_PROP(MATRIX_NODE_ID, debounce_id) == 0 |
|
|
|
|
k_work_init(&data->work, kscan_gpio_work_handler); |
|
|
|
|
#else |
|
|
|
|
k_delayed_work_init(&data->work, kscan_gpio_work_handler); |
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
|
return 0; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
static const struct kscan_driver_api gpio_driver_api = { |
|
|
|
|
.config = kscan_gpio_configure, |
|
|
|
|
.enable_callback = kscan_gpio_enable_interrupts, |
|
|
|
|
.disable_callback = kscan_gpio_disable_interrupts, |
|
|
|
|
}; |
|
|
|
|
|
|
|
|
|
#define _KSCAN_GPIO_ITEM_CFG_INIT(prop, idx) \ |
|
|
|
|
{ \
|
|
|
|
|
.label = DT_GPIO_LABEL_BY_IDX(MATRIX_NODE_ID, prop, idx), \
|
|
|
|
|
.pin = DT_GPIO_PIN_BY_IDX(MATRIX_NODE_ID, prop, idx), \
|
|
|
|
|
.flags = DT_GPIO_FLAGS_BY_IDX(MATRIX_NODE_ID, prop, idx), \
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
static const struct kscan_gpio_config kscan_gpio_config = { |
|
|
|
|
.rows = { |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 0) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 0), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 1) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 1), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 2) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 2), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 3) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 3), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 4) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 4), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 5) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 5), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 6) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 6), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 7) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 7), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 8) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 8), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 9) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 9), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 10) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 10), |
|
|
|
|
#endif |
|
|
|
|
}, |
|
|
|
|
.cols = { |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 0) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 0), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 1) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 1), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 2) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 2), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 3) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 3), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 4) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 4), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 5) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 5), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 6) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 6), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 7) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 7), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 8) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 8), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 9) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 9), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 10) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 10), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 11) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 11), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 12) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 12), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 13) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 13), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 14) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 14), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 15) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 15), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 16) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 16), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 17) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 17), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 18) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 18), |
|
|
|
|
#endif |
|
|
|
|
#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, col_gpios, 19) |
|
|
|
|
_KSCAN_GPIO_ITEM_CFG_INIT(col_gpios, 19), |
|
|
|
|
#endif |
|
|
|
|
}}; |
|
|
|
|
|
|
|
|
|
static struct kscan_gpio_data kscan_gpio_data; |
|
|
|
|
|
|
|
|
|
DEVICE_AND_API_INIT(kscan_gpio, DT_INST_LABEL(0), kscan_gpio_init, |
|
|
|
|
&kscan_gpio_data, &kscan_gpio_config, |
|
|
|
|
POST_KERNEL, CONFIG_ZMK_KSCAN_INIT_PRIORITY, |
|
|
|
|
&gpio_driver_api); |
|
|
|
|
#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) COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (INST_MATRIX_COLS(n)), (INST_MATRIX_ROWS(n))) |
|
|
|
|
#define INST_INPUT_LEN(n) COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (INST_MATRIX_ROWS(n)), (INST_MATRIX_COLS(n))) |
|
|
|
|
|
|
|
|
|
#define GPIO_INST_INIT(n) \ |
|
|
|
|
struct kscan_gpio_irq_callback_##n \
|
|
|
|
|
{ \
|
|
|
|
|
struct COND_CODE_0(DT_INST_PROP(n, debounce_period), (k_work), (k_delayed_work)) * work; \
|
|
|
|
|
struct gpio_callback callback; \
|
|
|
|
|
}; \
|
|
|
|
|
static struct kscan_gpio_irq_callback_##n \
|
|
|
|
|
irq_callbacks_##n[INST_INPUT_LEN(n)]; \
|
|
|
|
|
struct kscan_gpio_config_##n \
|
|
|
|
|
{ \
|
|
|
|
|
struct kscan_gpio_item_config rows[INST_MATRIX_ROWS(n)]; \
|
|
|
|
|
struct kscan_gpio_item_config cols[INST_MATRIX_COLS(n)]; \
|
|
|
|
|
}; \
|
|
|
|
|
struct kscan_gpio_data_##n \
|
|
|
|
|
{ \
|
|
|
|
|
kscan_callback_t callback; \
|
|
|
|
|
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)]; \
|
|
|
|
|
struct device *cols[INST_MATRIX_COLS(n)]; \
|
|
|
|
|
struct device *dev; \
|
|
|
|
|
}; \
|
|
|
|
|
static struct device **kscan_gpio_input_devices_##n(struct device *dev) \
|
|
|
|
|
{ \
|
|
|
|
|
struct kscan_gpio_data_##n *data = dev->driver_data; \
|
|
|
|
|
return (COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (data->cols), (data->rows))); \
|
|
|
|
|
} \
|
|
|
|
|
static const struct kscan_gpio_item_config *kscan_gpio_input_configs_##n(struct device *dev) \
|
|
|
|
|
{ \
|
|
|
|
|
const struct kscan_gpio_config_##n *cfg = dev->config_info; \
|
|
|
|
|
return ((COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (cfg->cols), (cfg->rows)))); \
|
|
|
|
|
} \
|
|
|
|
|
static struct device **kscan_gpio_output_devices_##n(struct device *dev) \
|
|
|
|
|
{ \
|
|
|
|
|
struct kscan_gpio_data_##n *data = dev->driver_data; \
|
|
|
|
|
return (COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (data->rows), (data->cols))); \
|
|
|
|
|
} \
|
|
|
|
|
static const struct kscan_gpio_item_config *kscan_gpio_output_configs_##n(struct device *dev) \
|
|
|
|
|
{ \
|
|
|
|
|
const struct kscan_gpio_config_##n *cfg = dev->config_info; \
|
|
|
|
|
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), 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), 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]; \
|
|
|
|
|
const struct kscan_gpio_item_config *cfg = &kscan_gpio_output_configs_##n(dev)[i]; \
|
|
|
|
|
gpio_pin_set(in_dev, cfg->pin, value); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
static void kscan_gpio_set_matrix_state_##n(bool state[INST_MATRIX_ROWS(n)][INST_MATRIX_COLS(n)], u32_t input_index, u32_t output_index, bool value) \
|
|
|
|
|
{ \
|
|
|
|
|
state[COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (output_index), (input_index))][COND_CODE_0(DT_ENUM_IDX(DT_DRV_INST(n), diode_direction), (input_index), (output_index))] = value; \
|
|
|
|
|
} \
|
|
|
|
|
static int kscan_gpio_read_##n(struct device *dev) \
|
|
|
|
|
{ \
|
|
|
|
|
struct kscan_gpio_data_##n *data = dev->driver_data; \
|
|
|
|
|
static bool read_state[INST_MATRIX_ROWS(n)][INST_MATRIX_COLS(n)]; \
|
|
|
|
|
LOG_DBG("Scanning the matrix for updated state"); \
|
|
|
|
|
/* 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); \
|
|
|
|
|
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]; \
|
|
|
|
|
const struct kscan_gpio_item_config *out_cfg = &kscan_gpio_output_configs_##n(dev)[o]; \
|
|
|
|
|
gpio_pin_set(out_dev, out_cfg->pin, 1); \
|
|
|
|
|
for (int i = 0; i < INST_INPUT_LEN(n); i++) \
|
|
|
|
|
{ \
|
|
|
|
|
struct device *in_dev = kscan_gpio_input_devices_##n(dev)[i]; \
|
|
|
|
|
const struct kscan_gpio_item_config *in_cfg = &kscan_gpio_input_configs_##n(dev)[i]; \
|
|
|
|
|
kscan_gpio_set_matrix_state_##n(read_state, i, o, gpio_pin_get(in_dev, in_cfg->pin) > 0); \
|
|
|
|
|
} \
|
|
|
|
|
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 */ \
|
|
|
|
|
kscan_gpio_set_output_state_##n(dev, 1); \
|
|
|
|
|
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]; \
|
|
|
|
|
if (pressed != data->matrix_state[r][c]) \
|
|
|
|
|
{ \
|
|
|
|
|
LOG_DBG("Sending event at %d,%d state %s", \
|
|
|
|
|
r, c, (pressed ? "on" : "off")); \
|
|
|
|
|
data->matrix_state[r][c] = pressed; \
|
|
|
|
|
data->callback(dev, r, c, pressed); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
return 0; \
|
|
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} \
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static void kscan_gpio_work_handler_##n(struct k_work *work) \
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{ \
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struct kscan_gpio_data_##n *data = \
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CONTAINER_OF(work, struct kscan_gpio_data_##n, work); \
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kscan_gpio_read_##n(data->dev); \
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} \
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static void kscan_gpio_irq_callback_handler_##n(struct device *dev, \
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struct gpio_callback *cb, gpio_port_pins_t pin) \
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{ \
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struct kscan_gpio_irq_callback_##n *data = \
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CONTAINER_OF(cb, struct kscan_gpio_irq_callback_##n, callback); \
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COND_CODE_0(DT_INST_PROP(n, debounce_period), \
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({ k_work_submit(data->work); }), \
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({ \
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k_delayed_work_cancel(data->work); \
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k_delayed_work_submit(data->work, K_MSEC(DT_INST_PROP(n, debounce_period))); })) \
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} \
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static struct kscan_gpio_data_##n kscan_gpio_data_##n; \
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static int kscan_gpio_configure_##n(struct device *dev, kscan_callback_t callback) \
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{ \
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struct kscan_gpio_data_##n *data = dev->driver_data; \
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if (!callback) \
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{ \
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return -EINVAL; \
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} \
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data->callback = callback; \
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return 0; \
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} \
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static int kscan_gpio_init_##n(struct device *dev) \
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{ \
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struct kscan_gpio_data_##n *data = dev->driver_data; \
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int err; \
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struct device **input_devices = kscan_gpio_input_devices_##n(dev); \
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for (int i = 0; i < INST_INPUT_LEN(n); i++) \
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{ \
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const struct kscan_gpio_item_config *in_cfg = &kscan_gpio_input_configs_##n(dev)[i]; \
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input_devices[i] = device_get_binding(in_cfg->label); \
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if (!input_devices[i]) \
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{ \
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LOG_ERR("Unable to find input GPIO device"); \
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return -EINVAL; \
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} \
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err = gpio_pin_configure(input_devices[i], in_cfg->pin, GPIO_INPUT | in_cfg->flags); \
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if (err) \
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{ \
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LOG_ERR("Unable to configure pin %d on %s for input", in_cfg->pin, in_cfg->label); \
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return err; \
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} \
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irq_callbacks_##n[i].work = &data->work; \
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gpio_init_callback(&irq_callbacks_##n[i].callback, kscan_gpio_irq_callback_handler_##n, BIT(in_cfg->pin)); \
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err = gpio_add_callback(input_devices[i], &irq_callbacks_##n[i].callback); \
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if (err) \
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{ \
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LOG_ERR("Error adding the callback to the column device"); \
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return err; \
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} \
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} \
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struct device **output_devices = kscan_gpio_output_devices_##n(dev); \
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for (int o = 0; o < INST_OUTPUT_LEN(n); o++) \
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{ \
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const struct kscan_gpio_item_config *out_cfg = &kscan_gpio_output_configs_##n(dev)[o]; \
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output_devices[o] = device_get_binding(out_cfg->label); \
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if (!output_devices[o]) \
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{ \
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LOG_ERR("Unable to find output GPIO device"); \
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|
return -EINVAL; \
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|
} \
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|
err = gpio_pin_configure(output_devices[o], out_cfg->pin, GPIO_OUTPUT_ACTIVE | out_cfg->flags); \
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|
if (err) \
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|
|
{ \
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|
LOG_ERR("Unable to configure pin %d on %s for output", out_cfg->pin, out_cfg->label); \
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|
return err; \
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|
|
} \
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|
|
} \
|
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|
|
data->dev = dev; \
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|
|
(COND_CODE_0(DT_INST_PROP(n, debounce_period), (k_work_init), (k_delayed_work_init)))(&data->work, kscan_gpio_work_handler_##n); \
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|
return 0; \
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|
|
} \
|
|
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|
|
static const struct kscan_driver_api gpio_driver_api_##n = { \
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|
|
.config = kscan_gpio_configure_##n, \
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|
|
.enable_callback = kscan_gpio_enable_interrupts_##n, \
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|
|
.disable_callback = kscan_gpio_disable_interrupts_##n, \
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|
|
}; \
|
|
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|
|
static const struct kscan_gpio_config_##n kscan_gpio_config_##n = { \
|
|
|
|
|
.rows = { \
|
|
|
|
|
IF_ENABLED(DT_INST_PHA_HAS_CELL_AT_IDX(n, row_gpios, 0, pin), (_KSCAN_GPIO_ITEM_CFG_INIT(n, row_gpios, 0))) \
|
|
|
|
|
IF_ENABLED(DT_INST_PHA_HAS_CELL_AT_IDX(n, row_gpios, 1, pin), (_KSCAN_GPIO_ITEM_CFG_INIT(n, row_gpios, 1)))}, \
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|
|
|
|
.cols = {IF_ENABLED(DT_INST_PHA_HAS_CELL_AT_IDX(n, col_gpios, 0, pin), (_KSCAN_GPIO_ITEM_CFG_INIT(n, col_gpios, 0))) IF_ENABLED(DT_INST_PHA_HAS_CELL_AT_IDX(n, col_gpios, 1, pin), (_KSCAN_GPIO_ITEM_CFG_INIT(n, col_gpios, 1)))}}; \
|
|
|
|
|
DEVICE_AND_API_INIT(kscan_gpio_##n, DT_INST_LABEL(n), kscan_gpio_init_##n, \
|
|
|
|
|
&kscan_gpio_data_##n, &kscan_gpio_config_##n, \
|
|
|
|
|
POST_KERNEL, CONFIG_ZMK_KSCAN_INIT_PRIORITY, \
|
|
|
|
|
&gpio_driver_api_##n); |
|
|
|
|
|
|
|
|
|
DT_INST_FOREACH_STATUS_OKAY(GPIO_INST_INIT) |
|
|
|
|