5ccbcf999d
- OTG support - Charger - WiFi 5GHz - RTC bug "fixed" (always-on interrupt - made device overheat!) - Kernel version bumped to 5.2.1 - Memory timings - New WM8994 codec board driver (fixes suspend/resume) - Camera's regulator supported now (saves power at least!) - Updated panel driver (still not in mainline, idk why) - MHL support in kernel (fixes boot times and screen, currently disabled in X, not tested) - Other minor kernel chagnes [ci:skip-build]: already built successfully in CI
126 lines
3.5 KiB
Diff
126 lines
3.5 KiB
Diff
From 399193f1e688a210de9ef6fbab664218ba276c95 Mon Sep 17 00:00:00 2001
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From: Beomho Seo <beomho.seo@samsung.com>
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Date: Mon, 12 Aug 2013 22:04:13 +0900
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Subject: [PATCH] Input: mcs_touchkey: Add parse DT function from device tree
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Add parse DT function for support mcs touchkey driver
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Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
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---
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drivers/input/keyboard/mcs_touchkey.c | 75 +++++++++++++++++++++++++--
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1 file changed, 71 insertions(+), 4 deletions(-)
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diff --git a/drivers/input/keyboard/mcs_touchkey.c b/drivers/input/keyboard/mcs_touchkey.c
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index 8cb0062b98e4..dae959a5c8f6 100644
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--- a/drivers/input/keyboard/mcs_touchkey.c
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+++ b/drivers/input/keyboard/mcs_touchkey.c
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@@ -15,6 +15,8 @@
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#include <linux/slab.h>
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#include <linux/platform_data/mcs.h>
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#include <linux/pm.h>
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+#include <linux/of_platform.h>
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+#include <linux/of_gpio.h>
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/* MCS5000 Touchkey */
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#define MCS5000_TOUCHKEY_STATUS 0x04
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@@ -92,6 +94,61 @@ static irqreturn_t mcs_touchkey_interrupt(int irq, void *dev_id)
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return IRQ_HANDLED;
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}
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+#ifdef CONFIG_OF
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+static struct mcs_platform_data *mcs_touchkey_parse_dt(struct device *dev)
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+{
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+ struct mcs_platform_data *pdata;
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+ struct device_node *np = dev->of_node;
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+ u32 *keymap;
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+ unsigned int len;
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+ int i = 0;
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+ const __be32 *prop;
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+
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+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
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+ if (!pdata) {
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+ dev_err(dev, "Failed to allocate platform data\n");
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+ return ERR_PTR(-ENOMEM);
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+ }
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+
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+ prop = of_get_property(np, "linux,code", &len);
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+ if (!prop) {
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+ dev_err(dev, "Failed to get code\n");
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+ return ERR_PTR(-EINVAL);
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+ }
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+
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+ if (len % sizeof(u32)) {
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+ dev_err(dev, "Malformed keycode property\n");
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+ return ERR_PTR(-EINVAL);
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+ }
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+
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+ pdata->keymap_size = len / sizeof(u32);
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+ keymap = devm_kzalloc(dev, sizeof(*keymap) * pdata->keymap_size, GFP_KERNEL);
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+
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+ if (of_property_read_u32(np, "key_maxval", &pdata->key_maxval)) {
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+ dev_err(dev, "Failed to get key max value data\n");
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+ return ERR_PTR(-EINVAL);
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+ }
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+
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+ if (pdata->keymap_size > pdata->key_maxval) {
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+ dev_err(dev, "Key map size overflow\n");
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+ return ERR_PTR(-EINVAL);
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+ }
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+
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+ for (i = 0; i < pdata->keymap_size; i++) {
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+ u32 code = be32_to_cpup(prop + i);
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+ keymap[i] = MCS_KEY_MAP(i, code);
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+ }
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+ pdata->keymap = keymap;
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+ return pdata;
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+}
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+#else
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+static inline struct mcs_platform_data *mcs_touchkey_parse_dt
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+ (struct device *dev)
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+{
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+ return NULL;
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+}
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+#endif
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+
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static int mcs_touchkey_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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@@ -103,10 +160,14 @@ static int mcs_touchkey_probe(struct i2c_client *client,
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int error;
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int i;
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- pdata = dev_get_platdata(&client->dev);
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- if (!pdata) {
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- dev_err(&client->dev, "no platform data defined\n");
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- return -EINVAL;
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+ if (&client->dev.of_node)
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+ pdata = mcs_touchkey_parse_dt(&client->dev);
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+ else
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+ pdata = dev_get_platdata(&client->dev);
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+
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+ if (IS_ERR(pdata)) {
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+ dev_err(&client->dev, "Failed to get platform data\n");
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+ return PTR_ERR(pdata);
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}
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data = kzalloc(struct_size(data, keycodes, pdata->key_maxval + 1),
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@@ -257,10 +318,16 @@ static const struct i2c_device_id mcs_touchkey_id[] = {
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};
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MODULE_DEVICE_TABLE(i2c, mcs_touchkey_id);
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+static struct of_device_id mcs_touchkey_dt_match[] = {
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+ { .compatible = "mcs5000_touchkey", },
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+ { .compatible = "mcs5080_touchkey", },
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+};
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+
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static struct i2c_driver mcs_touchkey_driver = {
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.driver = {
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.name = "mcs_touchkey",
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.pm = &mcs_touchkey_pm_ops,
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+ .of_match_table = of_match_ptr(mcs_touchkey_dt_match),
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},
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.probe = mcs_touchkey_probe,
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.remove = mcs_touchkey_remove,
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--
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2.22.0
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