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Jean-François Lessard 3ba5c78fe7 auxdisplay: linedisp: support attribute attachment to auxdisplay devices

Enable linedisp library integration into existing kernel devices (like LED
class) to provide a uniform 7-segment userspace API without creating
separate child devices, meeting the consistent interface while maintaining
coherent device hierarchies.

This allows uniform 7-segment API across all drivers while solving device
proliferation and fragmented userspace interfaces.

The sysfs attributes appear in one of the two locations depending on usage:
  1. On linedisp.N child devices (legacy linedisp_register())
  2. On the parent auxdisplay device (new linedisp_attach())
Functionality is identical in both modes.

Existing consumers of linedisp_register() are unaffected. The new API
enables drivers like TM16XX to integrate 7-segment display functionality
seamlessly within their LED class device hierarchy.

Signed-off-by: Jean-François Lessard <jefflessard3@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

2025-10-15 18:46:01 +02:00

arm-charlcd.c

auxdisplay: Use sizeof(*pointer) instead of sizeof(type)

2024-06-04 10:29:36 +03:00

cfag12864b.c

auxdisplay: Remove unused functions

2024-10-08 20:48:18 +03:00

cfag12864bfb.c

Get rid of 'remove_new' relic from platform driver struct

2024-12-01 15:12:43 -08:00

charlcd.c

auxdisplay: charlcd: Partially revert "Move hwidth and bwidth to struct hd44780_common"