[PATCH v4 1/2] input: keypad: add new keypad driver for MA35D1

[kernel test robot]

Hi Ming-Jen,

kernel test robot noticed the following build errors:

[auto build test ERROR on dtor-input/next]
[also build test ERROR on dtor-input/for-linus hid/for-next soc/for-next linus/master v6.13-rc1 next-20241203]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Ming-Jen-Chen/input-keypad-add-new-keypad-driver-for-MA35D1/20241204-123001
base:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link:    https://lore.kernel.org/r/20241204021014.5083-2-mjchen0829%40gmail.com
patch subject: [PATCH v4 1/2] input: keypad: add new keypad driver for MA35D1
config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20241204/202412042245.5jwzbfGS-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241204/202412042245.5jwzbfGS-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412042245.5jwzbfGS-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/input/keyboard/ma35d1_keypad.c: In function 'ma35d1_keypad_scan_matrix':
   drivers/input/keyboard/ma35d1_keypad.c:83:24: error: implicit declaration of function 'readl' [-Wimplicit-function-declaration]
      83 |         key_event[0] = readl(keypad->mmio_base + KPI_KPE0);
         |                        ^~~~~
>> drivers/input/keyboard/ma35d1_keypad.c:89:9: error: implicit declaration of function 'writel' [-Wimplicit-function-declaration]
      89 |         writel(key_event[0], (keypad->mmio_base + KPI_KPE0));
         |         ^~~~~~


vim +/writel +89 drivers/input/keyboard/ma35d1_keypad.c

    72	
    73	static void ma35d1_keypad_scan_matrix(struct ma35d1_keypad *keypad, unsigned int status)
    74	{
    75		struct input_dev *input_dev = keypad->input_dev;
    76		u32 row_shift = get_count_order(keypad->kpi_col);
    77		u32 *keymap = input_dev->keycode;
    78		u32 code, key, index;
    79		u32 key_event[4];
    80		u64 pressed_keys = 0, released_keys = 0;
    81	
    82		/* Read key event status */
    83		key_event[0] = readl(keypad->mmio_base + KPI_KPE0);
    84		key_event[1] = readl(keypad->mmio_base + KPI_KPE1);
    85		key_event[2] = readl(keypad->mmio_base + KPI_KRE0);
    86		key_event[3] = readl(keypad->mmio_base + KPI_KRE1);
    87	
    88		/* Clear key event status */
  > 89		writel(key_event[0], (keypad->mmio_base + KPI_KPE0));
    90		writel(key_event[1], (keypad->mmio_base + KPI_KPE1));
    91		writel(key_event[2], (keypad->mmio_base + KPI_KRE0));
    92		writel(key_event[3], (keypad->mmio_base + KPI_KRE1));
    93	
    94		pressed_keys  = key_event[0] | ((u64)key_event[1] << 32);
    95		released_keys = key_event[2] | ((u64)key_event[3] << 32);
    96	
    97		/* Process pressed keys */
    98		for_each_set_bit(index, (const unsigned long *)&pressed_keys, KEY_EVENT_BITS) {
    99			code = MATRIX_SCAN_CODE(index / 8, (index % 8), row_shift);
   100			key = keymap[code];
   101	
   102			input_event(input_dev, EV_MSC, MSC_SCAN, code);
   103			input_report_key(input_dev, key, 1);
   104		}
   105	
   106		/* Process released keys */
   107		for_each_set_bit(index, (const unsigned long *)&released_keys, KEY_EVENT_BITS) {
   108			code = MATRIX_SCAN_CODE(index / 8, (index % 8), row_shift);
   109			key = keymap[code];
   110	
   111			input_event(input_dev, EV_MSC, MSC_SCAN, code);
   112			input_report_key(input_dev, key, 0);
   113		}
   114	
   115		input_sync(input_dev);
   116	}
   117	

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