Fixes for multiple GPIO kscan devices as expected.
This commit is contained in:
Pete Johanson
parent
6e1e21c2be
commit
432adf5b60
4
Kconfig
4
Kconfig
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@ -42,4 +42,8 @@ module = ZMK
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module-str = zmk
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source "subsys/logging/Kconfig.template.log_config"
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rsource "boards/Kconfig"
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rsource "boards/shields/*/Kconfig.defconfig"
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source "Kconfig.zephyr"
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@ -0,0 +1 @@
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rsource "shields/*/Kconfig.shield"
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@ -1,2 +1,4 @@
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CONFIG_ZMK_KSCAN_COMPOSITE_DRIVER=y
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if SHIELD_PETEJOHANSON_HANDWIRE
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endif
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@ -2,5 +2,5 @@
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# SPDX-License-Identifier: Apache-2.0
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config SHIELD_PETEJOHANSON_HANDWIRE
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prompt "Pete Johanson Handwire"
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def_bool $(shields_list_contains,petejohanson_handwire)
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@ -0,0 +1 @@
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CONFIG_ZMK_KSCAN_COMPOSITE_DRIVER=y
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@ -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
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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,
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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)
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{
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LOG_ERR("Unable to find row GPIO device\n");
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return -EINVAL;
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}
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int err = gpio_pin_configure(data->rows[r],
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item_cfg->pin,
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row_gpio_dir | item_cfg->flags);
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if (err)
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{
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LOG_ERR("Unable to configure row GPIO pin");
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return -EINVAL;
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}
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#ifdef SCAN_COL_TO_ROW
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irq_callbacks[r].work = &data->work;
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gpio_init_callback(&irq_callbacks[r].callback,
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kscan_gpio_irq_callback_handler,
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BIT(item_cfg->pin));
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gpio_add_callback(data->rows[r], &irq_callbacks[r].callback);
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#endif
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}
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data->dev = dev;
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#if DT_PROP(MATRIX_NODE_ID, debounce_id) == 0
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k_work_init(&data->work, kscan_gpio_work_handler);
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#else
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k_delayed_work_init(&data->work, kscan_gpio_work_handler);
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#endif
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return 0;
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}
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static const struct kscan_driver_api gpio_driver_api = {
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.config = kscan_gpio_configure,
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.enable_callback = kscan_gpio_enable_interrupts,
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.disable_callback = kscan_gpio_disable_interrupts,
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};
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#define _KSCAN_GPIO_ITEM_CFG_INIT(prop, idx) \
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{ \
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.label = DT_GPIO_LABEL_BY_IDX(MATRIX_NODE_ID, prop, idx), \
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.pin = DT_GPIO_PIN_BY_IDX(MATRIX_NODE_ID, prop, idx), \
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.flags = DT_GPIO_FLAGS_BY_IDX(MATRIX_NODE_ID, prop, idx), \
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}
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static const struct kscan_gpio_config kscan_gpio_config = {
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.rows = {
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 0)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 0),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 1)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 1),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 2)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 2),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 3)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 3),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 4)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 4),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 5)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 5),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 6)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 6),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 7)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 7),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 8)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 8),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 9)
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_KSCAN_GPIO_ITEM_CFG_INIT(row_gpios, 9),
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#endif
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#if DT_PROP_HAS_IDX(MATRIX_NODE_ID, row_gpios, 10)
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||||
_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; \
|
||||
} \
|
||||
static void kscan_gpio_work_handler_##n(struct k_work *work) \
|
||||
{ \
|
||||
struct kscan_gpio_data_##n *data = \
|
||||
CONTAINER_OF(work, struct kscan_gpio_data_##n, work); \
|
||||
kscan_gpio_read_##n(data->dev); \
|
||||
} \
|
||||
static void kscan_gpio_irq_callback_handler_##n(struct device *dev, \
|
||||
struct gpio_callback *cb, gpio_port_pins_t pin) \
|
||||
{ \
|
||||
struct kscan_gpio_irq_callback_##n *data = \
|
||||
CONTAINER_OF(cb, struct kscan_gpio_irq_callback_##n, callback); \
|
||||
COND_CODE_0(DT_INST_PROP(n, debounce_period), \
|
||||
({ k_work_submit(data->work); }), \
|
||||
({ \
|
||||
k_delayed_work_cancel(data->work); \
|
||||
k_delayed_work_submit(data->work, K_MSEC(DT_INST_PROP(n, debounce_period))); })) \
|
||||
} \
|
||||
static struct kscan_gpio_data_##n kscan_gpio_data_##n; \
|
||||
static int kscan_gpio_configure_##n(struct device *dev, kscan_callback_t callback) \
|
||||
{ \
|
||||
struct kscan_gpio_data_##n *data = dev->driver_data; \
|
||||
if (!callback) \
|
||||
{ \
|
||||
return -EINVAL; \
|
||||
} \
|
||||
data->callback = callback; \
|
||||
return 0; \
|
||||
} \
|
||||
static int kscan_gpio_init_##n(struct device *dev) \
|
||||
{ \
|
||||
struct kscan_gpio_data_##n *data = dev->driver_data; \
|
||||
int err; \
|
||||
struct device **input_devices = kscan_gpio_input_devices_##n(dev); \
|
||||
for (int i = 0; i < INST_INPUT_LEN(n); i++) \
|
||||
{ \
|
||||
const struct kscan_gpio_item_config *in_cfg = &kscan_gpio_input_configs_##n(dev)[i]; \
|
||||
input_devices[i] = device_get_binding(in_cfg->label); \
|
||||
if (!input_devices[i]) \
|
||||
{ \
|
||||
LOG_ERR("Unable to find input GPIO device"); \
|
||||
return -EINVAL; \
|
||||
} \
|
||||
err = gpio_pin_configure(input_devices[i], in_cfg->pin, GPIO_INPUT | in_cfg->flags); \
|
||||
if (err) \
|
||||
{ \
|
||||
LOG_ERR("Unable to configure pin %d on %s for input", in_cfg->pin, in_cfg->label); \
|
||||
return err; \
|
||||
} \
|
||||
irq_callbacks_##n[i].work = &data->work; \
|
||||
gpio_init_callback(&irq_callbacks_##n[i].callback, kscan_gpio_irq_callback_handler_##n, BIT(in_cfg->pin)); \
|
||||
err = gpio_add_callback(input_devices[i], &irq_callbacks_##n[i].callback); \
|
||||
if (err) \
|
||||
{ \
|
||||
LOG_ERR("Error adding the callback to the column device"); \
|
||||
return err; \
|
||||
} \
|
||||
} \
|
||||
struct device **output_devices = kscan_gpio_output_devices_##n(dev); \
|
||||
for (int o = 0; o < INST_OUTPUT_LEN(n); o++) \
|
||||
{ \
|
||||
const struct kscan_gpio_item_config *out_cfg = &kscan_gpio_output_configs_##n(dev)[o]; \
|
||||
output_devices[o] = device_get_binding(out_cfg->label); \
|
||||
if (!output_devices[o]) \
|
||||
{ \
|
||||
LOG_ERR("Unable to find output GPIO device"); \
|
||||
return -EINVAL; \
|
||||
} \
|
||||
err = gpio_pin_configure(output_devices[o], out_cfg->pin, GPIO_OUTPUT_ACTIVE | out_cfg->flags); \
|
||||
if (err) \
|
||||
{ \
|
||||
LOG_ERR("Unable to configure pin %d on %s for output", out_cfg->pin, out_cfg->label); \
|
||||
return err; \
|
||||
} \
|
||||
} \
|
||||
data->dev = dev; \
|
||||
(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; \
|
||||
} \
|
||||
static const struct kscan_driver_api gpio_driver_api_##n = { \
|
||||
.config = kscan_gpio_configure_##n, \
|
||||
.enable_callback = kscan_gpio_enable_interrupts_##n, \
|
||||
.disable_callback = kscan_gpio_disable_interrupts_##n, \
|
||||
}; \
|
||||
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)))}, \
|
||||
.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)
|
||||
|
|
|
|||
Loading…
Reference in New Issue