devicetree: replace DT_HAS_DRV_INST with DT_INST_FOREACH

Make drivers multi-instance wherever possible using DT_INST_FOREACH.
This allows removing DT_HAS_DRV_INST in favor of making drivers just
do the right thing regardless of how many instances there are.

There are a few exceptions:

- SoC drivers which use CMake input files (like i2c_dw.c) or otherwise
  would require more time to convert than I have at the moment. For the
  sake of expediency, just inline the DT_HAS_DRV_INST expansion for
  now in these cases.

- SoC drivers which are explicitly single-instance (like the nRF SAADC
  driver). Again for the sake of expediency, drop a BUILD_ASSERT in
  those cases to make sure the assumption that all supported SoCs have
  at most one available instance is valid, failing fast otherwise.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
This commit is contained in:
Martí Bolívar 2020-05-05 16:06:32 -07:00 committed by Kumar Gala
commit 87e1743ae0
46 changed files with 571 additions and 1301 deletions

View file

@ -514,21 +514,6 @@ DEVICE_AND_API_INIT(gpio_pca95xx_##inst, \
&gpio_pca95xx_##inst##_drvdata, \
&gpio_pca95xx_##inst##_cfg, \
POST_KERNEL, CONFIG_GPIO_PCA95XX_INIT_PRIORITY, \
&gpio_pca95xx_drv_api_funcs)
&gpio_pca95xx_drv_api_funcs);
#if DT_HAS_DRV_INST(0)
GPIO_PCA95XX_DEVICE_INSTANCE(0);
#endif /* DT_HAS_DRV_INST(0) */
#if DT_HAS_DRV_INST(1)
GPIO_PCA95XX_DEVICE_INSTANCE(1);
#endif /* DT_HAS_DRV_INST(1) */
#if DT_HAS_DRV_INST(2)
GPIO_PCA95XX_DEVICE_INSTANCE(2);
#endif /* DT_HAS_DRV_INST(2) */
#if DT_HAS_DRV_INST(3)
GPIO_PCA95XX_DEVICE_INSTANCE(3);
#endif /* DT_HAS_DRV_INST(3) */
DT_INST_FOREACH(GPIO_PCA95XX_DEVICE_INSTANCE)