// expensive.
#include <linux/module.h>
+#include <linux/acpi.h>
#include <linux/bitops.h>
#include <linux/i2c.h>
#include <linux/input.h>
+#include <linux/input/vivaldi-fmap.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/notifier.h>
#include <asm/unaligned.h>
-#define MAX_NUM_TOP_ROW_KEYS 15
-
/**
* struct cros_ec_keyb - Structure representing EC keyboard device
*
* @idev: The input device for the matrix keys.
* @bs_idev: The input device for non-matrix buttons and switches (or NULL).
* @notifier: interrupt event notifier for transport devices
- * @function_row_physmap: An array of the encoded rows/columns for the top
- * row function keys, in an order from left to right
- * @num_function_row_keys: The number of top row keys in a custom keyboard
+ * @vdata: vivaldi function row data
*/
struct cros_ec_keyb {
unsigned int rows;
struct input_dev *bs_idev;
struct notifier_block notifier;
- u16 function_row_physmap[MAX_NUM_TOP_ROW_KEYS];
- size_t num_function_row_keys;
+ struct vivaldi_data vdata;
};
/**
* but the ckdev->bs_idev will remain NULL when this function exits.
*
* @ckdev: The keyboard device
+ * @expect_buttons_switches: Indicates that EC must report button and/or
+ * switch events
*
* Returns 0 if no error or -error upon error.
*/
-static int cros_ec_keyb_register_bs(struct cros_ec_keyb *ckdev)
+static int cros_ec_keyb_register_bs(struct cros_ec_keyb *ckdev,
+ bool expect_buttons_switches)
{
struct cros_ec_device *ec_dev = ckdev->ec;
struct device *dev = ckdev->dev;
switches = get_unaligned_le32(&event_data.switches);
if (!buttons && !switches)
- return 0;
+ return expect_buttons_switches ? -EINVAL : 0;
/*
* We call the non-matrix buttons/switches 'input1', if present.
return 0;
}
+static void cros_ec_keyb_parse_vivaldi_physmap(struct cros_ec_keyb *ckdev)
+{
+ u32 *physmap = ckdev->vdata.function_row_physmap;
+ unsigned int row, col, scancode;
+ int n_physmap;
+ int error;
+ int i;
+
+ n_physmap = device_property_count_u32(ckdev->dev,
+ "function-row-physmap");
+ if (n_physmap <= 0)
+ return;
+
+ if (n_physmap >= VIVALDI_MAX_FUNCTION_ROW_KEYS) {
+ dev_warn(ckdev->dev,
+ "only up to %d top row keys is supported (%d specified)\n",
+ VIVALDI_MAX_FUNCTION_ROW_KEYS, n_physmap);
+ n_physmap = VIVALDI_MAX_FUNCTION_ROW_KEYS;
+ }
+
+ error = device_property_read_u32_array(ckdev->dev,
+ "function-row-physmap",
+ physmap, n_physmap);
+ if (error) {
+ dev_warn(ckdev->dev,
+ "failed to parse function-row-physmap property: %d\n",
+ error);
+ return;
+ }
+
+ /*
+ * Convert (in place) from row/column encoding to matrix "scancode"
+ * used by the driver.
+ */
+ for (i = 0; i < n_physmap; i++) {
+ row = KEY_ROW(physmap[i]);
+ col = KEY_COL(physmap[i]);
+ scancode = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
+ physmap[i] = scancode;
+ }
+
+ ckdev->vdata.num_function_row_keys = n_physmap;
+}
+
/**
- * cros_ec_keyb_register_bs - Register matrix keys
+ * cros_ec_keyb_register_matrix - Register matrix keys
*
* Handles all the bits of the keyboard driver related to matrix keys.
*
struct input_dev *idev;
const char *phys;
int err;
- struct property *prop;
- const __be32 *p;
- u16 *physmap;
- u32 key_pos;
- int row, col;
err = matrix_keypad_parse_properties(dev, &ckdev->rows, &ckdev->cols);
if (err)
idev->id.product = 0;
idev->dev.parent = dev;
- ckdev->ghost_filter = of_property_read_bool(dev->of_node,
+ ckdev->ghost_filter = device_property_read_bool(dev,
"google,needs-ghost-filter");
err = matrix_keypad_build_keymap(NULL, NULL, ckdev->rows, ckdev->cols,
input_set_drvdata(idev, ckdev);
ckdev->idev = idev;
cros_ec_keyb_compute_valid_keys(ckdev);
-
- physmap = ckdev->function_row_physmap;
- of_property_for_each_u32(dev->of_node, "function-row-physmap",
- prop, p, key_pos) {
- if (ckdev->num_function_row_keys == MAX_NUM_TOP_ROW_KEYS) {
- dev_warn(dev, "Only support up to %d top row keys\n",
- MAX_NUM_TOP_ROW_KEYS);
- break;
- }
- row = KEY_ROW(key_pos);
- col = KEY_COL(key_pos);
- *physmap = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
- physmap++;
- ckdev->num_function_row_keys++;
- }
+ cros_ec_keyb_parse_vivaldi_physmap(ckdev);
err = input_register_device(ckdev->idev);
if (err) {
struct device_attribute *attr,
char *buf)
{
- ssize_t size = 0;
- int i;
- struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
- u16 *physmap = ckdev->function_row_physmap;
-
- for (i = 0; i < ckdev->num_function_row_keys; i++)
- size += scnprintf(buf + size, PAGE_SIZE - size,
- "%s%02X", size ? " " : "", physmap[i]);
- if (size)
- size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
+ const struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
+ const struct vivaldi_data *data = &ckdev->vdata;
- return size;
+ return vivaldi_function_row_physmap_show(data, buf);
}
static DEVICE_ATTR_RO(function_row_physmap);
struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
if (attr == &dev_attr_function_row_physmap.attr &&
- !ckdev->num_function_row_keys)
+ !ckdev->vdata.num_function_row_keys)
return 0;
return attr->mode;
.attrs = cros_ec_keyb_attrs,
};
-
static int cros_ec_keyb_probe(struct platform_device *pdev)
{
- struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
+ struct cros_ec_device *ec;
struct device *dev = &pdev->dev;
struct cros_ec_keyb *ckdev;
+ bool buttons_switches_only = device_get_match_data(dev);
int err;
- if (!dev->of_node)
- return -ENODEV;
+ /*
+ * If the parent ec device has not been probed yet, defer the probe of
+ * this keyboard/button driver until later.
+ */
+ ec = dev_get_drvdata(pdev->dev.parent);
+ if (!ec)
+ return -EPROBE_DEFER;
ckdev = devm_kzalloc(dev, sizeof(*ckdev), GFP_KERNEL);
if (!ckdev)
ckdev->dev = dev;
dev_set_drvdata(dev, ckdev);
- err = cros_ec_keyb_register_matrix(ckdev);
- if (err) {
- dev_err(dev, "cannot register matrix inputs: %d\n", err);
- return err;
+ if (!buttons_switches_only) {
+ err = cros_ec_keyb_register_matrix(ckdev);
+ if (err) {
+ dev_err(dev, "cannot register matrix inputs: %d\n",
+ err);
+ return err;
+ }
}
- err = cros_ec_keyb_register_bs(ckdev);
+ err = cros_ec_keyb_register_bs(ckdev, buttons_switches_only);
if (err) {
dev_err(dev, "cannot register non-matrix inputs: %d\n", err);
return err;
err = devm_device_add_group(dev, &cros_ec_keyb_attr_group);
if (err) {
- dev_err(dev, "failed to create attributes. err=%d\n", err);
+ dev_err(dev, "failed to create attributes: %d\n", err);
return err;
}
return 0;
}
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id cros_ec_keyb_acpi_match[] = {
+ { "GOOG0007", true },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, cros_ec_keyb_acpi_match);
+#endif
+
#ifdef CONFIG_OF
static const struct of_device_id cros_ec_keyb_of_match[] = {
{ .compatible = "google,cros-ec-keyb" },
- {},
+ { .compatible = "google,cros-ec-keyb-switches", .data = (void *)true },
+ {}
};
MODULE_DEVICE_TABLE(of, cros_ec_keyb_of_match);
#endif
.driver = {
.name = "cros-ec-keyb",
.of_match_table = of_match_ptr(cros_ec_keyb_of_match),
+ .acpi_match_table = ACPI_PTR(cros_ec_keyb_acpi_match),
.pm = &cros_ec_keyb_pm_ops,
},
};
projects / platform / kernel / linux-starfive.git / blobdiff