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Release 4.11 drivers/input/keyboard/adp5520-keys.c

/*
 * Keypad driver for Analog Devices ADP5520 MFD PMICs
 *
 * Copyright 2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/mfd/adp5520.h>
#include <linux/slab.h>
#include <linux/device.h>


struct adp5520_keys {
	
struct input_dev *input;
	
struct notifier_block notifier;
	
struct device *master;
	
unsigned short keycode[ADP5520_KEYMAPSIZE];
};


static void adp5520_keys_report_event(struct adp5520_keys *dev, unsigned short keymask, int value) { int i; for (i = 0; i < ADP5520_MAXKEYS; i++) if (keymask & (1 << i)) input_report_key(dev->input, dev->keycode[i], value); input_sync(dev->input); }

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Michael Hennerich67100.00%1100.00%
Total67100.00%1100.00%


static int adp5520_keys_notifier(struct notifier_block *nb, unsigned long event, void *data) { struct adp5520_keys *dev; uint8_t reg_val_lo, reg_val_hi; unsigned short keymask; dev = container_of(nb, struct adp5520_keys, notifier); if (event & ADP5520_KP_INT) { adp5520_read(dev->master, ADP5520_KP_INT_STAT_1, &reg_val_lo); adp5520_read(dev->master, ADP5520_KP_INT_STAT_2, &reg_val_hi); keymask = (reg_val_hi << 8) | reg_val_lo; /* Read twice to clear */ adp5520_read(dev->master, ADP5520_KP_INT_STAT_1, &reg_val_lo); adp5520_read(dev->master, ADP5520_KP_INT_STAT_2, &reg_val_hi); keymask |= (reg_val_hi << 8) | reg_val_lo; adp5520_keys_report_event(dev, keymask, 1); } if (event & ADP5520_KR_INT) { adp5520_read(dev->master, ADP5520_KR_INT_STAT_1, &reg_val_lo); adp5520_read(dev->master, ADP5520_KR_INT_STAT_2, &reg_val_hi); keymask = (reg_val_hi << 8) | reg_val_lo; /* Read twice to clear */ adp5520_read(dev->master, ADP5520_KR_INT_STAT_1, &reg_val_lo); adp5520_read(dev->master, ADP5520_KR_INT_STAT_2, &reg_val_hi); keymask |= (reg_val_hi << 8) | reg_val_lo; adp5520_keys_report_event(dev, keymask, 0); } return 0; }

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Michael Hennerich220100.00%1100.00%
Total220100.00%1100.00%


static int adp5520_keys_probe(struct platform_device *pdev) { struct adp5520_keys_platform_data *pdata = dev_get_platdata(&pdev->dev); struct input_dev *input; struct adp5520_keys *dev; int ret, i; unsigned char en_mask, ctl_mask = 0; if (pdev->id != ID_ADP5520) { dev_err(&pdev->dev, "only ADP5520 supports Keypad\n"); return -EINVAL; } if (!pdata) { dev_err(&pdev->dev, "missing platform data\n"); return -EINVAL; } if (!(pdata->rows_en_mask && pdata->cols_en_mask)) return -EINVAL; dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) { dev_err(&pdev->dev, "failed to alloc memory\n"); return -ENOMEM; } input = devm_input_allocate_device(&pdev->dev); if (!input) return -ENOMEM; dev->master = pdev->dev.parent; dev->input = input; input->name = pdev->name; input->phys = "adp5520-keys/input0"; input->dev.parent = &pdev->dev; input->id.bustype = BUS_I2C; input->id.vendor = 0x0001; input->id.product = 0x5520; input->id.version = 0x0001; input->keycodesize = sizeof(dev->keycode[0]); input->keycodemax = pdata->keymapsize; input->keycode = dev->keycode; memcpy(dev->keycode, pdata->keymap, pdata->keymapsize * input->keycodesize); /* setup input device */ __set_bit(EV_KEY, input->evbit); if (pdata->repeat) __set_bit(EV_REP, input->evbit); for (i = 0; i < input->keycodemax; i++) __set_bit(dev->keycode[i], input->keybit); __clear_bit(KEY_RESERVED, input->keybit); ret = input_register_device(input); if (ret) { dev_err(&pdev->dev, "unable to register input device\n"); return ret; } en_mask = pdata->rows_en_mask | pdata->cols_en_mask; ret = adp5520_set_bits(dev->master, ADP5520_GPIO_CFG_1, en_mask); if (en_mask & ADP5520_COL_C3) ctl_mask |= ADP5520_C3_MODE; if (en_mask & ADP5520_ROW_R3) ctl_mask |= ADP5520_R3_MODE; if (ctl_mask) ret |= adp5520_set_bits(dev->master, ADP5520_LED_CONTROL, ctl_mask); ret |= adp5520_set_bits(dev->master, ADP5520_GPIO_PULLUP, pdata->rows_en_mask); if (ret) { dev_err(&pdev->dev, "failed to write\n"); return -EIO; } dev->notifier.notifier_call = adp5520_keys_notifier; ret = adp5520_register_notifier(dev->master, &dev->notifier, ADP5520_KP_IEN | ADP5520_KR_IEN); if (ret) { dev_err(&pdev->dev, "failed to register notifier\n"); return ret; } platform_set_drvdata(pdev, dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Hennerich49994.51%133.33%
Himangi Saraogi254.73%133.33%
Jingoo Han40.76%133.33%
Total528100.00%3100.00%


static int adp5520_keys_remove(struct platform_device *pdev) { struct adp5520_keys *dev = platform_get_drvdata(pdev); adp5520_unregister_notifier(dev->master, &dev->notifier, ADP5520_KP_IEN | ADP5520_KR_IEN); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Hennerich40100.00%1100.00%
Total40100.00%1100.00%

static struct platform_driver adp5520_keys_driver = { .driver = { .name = "adp5520-keys", }, .probe = adp5520_keys_probe, .remove = adp5520_keys_remove, }; module_platform_driver(adp5520_keys_driver); MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); MODULE_DESCRIPTION("Keys ADP5520 Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:adp5520-keys");

Overall Contributors

PersonTokensPropCommitsCommitProp
Michael Hennerich91996.23%120.00%
Himangi Saraogi282.93%120.00%
Jingoo Han40.42%120.00%
Tejun Heo30.31%120.00%
JJ Ding10.10%120.00%
Total955100.00%5100.00%
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