diff options
Diffstat (limited to 'include/dm')
| -rw-r--r-- | include/dm/device-internal.h | 2 | ||||
| -rw-r--r-- | include/dm/device.h | 16 | ||||
| -rw-r--r-- | include/dm/of.h | 9 | ||||
| -rw-r--r-- | include/dm/platdata.h | 49 | ||||
| -rw-r--r-- | include/dm/util.h | 2 |
5 files changed, 63 insertions, 15 deletions
diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h index 1dcc22f689..c5d7ec0650 100644 --- a/include/dm/device-internal.h +++ b/include/dm/device-internal.h @@ -81,7 +81,7 @@ int device_bind_with_driver_data(struct udevice *parent, * @return 0 if OK, -ve on error */ int device_bind_by_name(struct udevice *parent, bool pre_reloc_only, - struct driver_info *info, struct udevice **devp); + const struct driver_info *info, struct udevice **devp); /** * device_reparent: reparent the device to a new parent diff --git a/include/dm/device.h b/include/dm/device.h index ac3b6c1b8a..5bef484247 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -554,6 +554,20 @@ int device_get_by_driver_info(const struct driver_info *info, struct udevice **devp); /** + * device_get_by_driver_info_idx() - Get a device based on driver_info index + * + * Locates a device by its struct driver_info, by using its index number which + * is written into the idx field of struct phandle_1_arg, etc. + * + * The device is probed to activate it ready for use. + * + * @idx: Index number of the driver_info structure (0=first) + * @devp: Returns pointer to device if found, otherwise this is set to NULL + * @return 0 if OK, -ve on error + */ +int device_get_by_driver_info_idx(uint idx, struct udevice **devp); + +/** * device_find_first_child() - Find the first child of a device * * @parent: Parent device to search @@ -823,7 +837,7 @@ static inline bool device_is_on_pci_bus(const struct udevice *dev) _ret = device_next_child_err(&dev)) /** - * dm_scan_fdt_dev() - Bind child device in a the device tree + * dm_scan_fdt_dev() - Bind child device in the device tree * * This handles device which have sub-nodes in the device tree. It scans all * sub-nodes and binds drivers for each node where a driver can be found. diff --git a/include/dm/of.h b/include/dm/of.h index 6bef73b441..5cb6f44a6c 100644 --- a/include/dm/of.h +++ b/include/dm/of.h @@ -90,17 +90,10 @@ DECLARE_GLOBAL_DATA_PTR; * * @returns true if livetree is active, false it not */ -#ifdef CONFIG_OF_LIVE static inline bool of_live_active(void) { - return gd->of_root != NULL; + return gd_of_root() != NULL; } -#else -static inline bool of_live_active(void) -{ - return false; -} -#endif #define OF_BAD_ADDR ((u64)-1) diff --git a/include/dm/platdata.h b/include/dm/platdata.h index cab93b071b..216efa8ef7 100644 --- a/include/dm/platdata.h +++ b/include/dm/platdata.h @@ -22,30 +22,71 @@ * @name: Driver name * @platdata: Driver-specific platform data * @platdata_size: Size of platform data structure - * @dev: Device created from this structure data + * @parent_idx: Index of the parent driver_info structure */ struct driver_info { const char *name; const void *platdata; #if CONFIG_IS_ENABLED(OF_PLATDATA) - uint platdata_size; - struct udevice *dev; + unsigned short platdata_size; + short parent_idx; #endif }; +#if CONFIG_IS_ENABLED(OF_PLATDATA) +#define driver_info_parent_id(driver_info) driver_info->parent_idx +#else +#define driver_info_parent_id(driver_info) (-1) +#endif + +/** + * driver_rt - runtime information set up by U-Boot + * + * There is one of these for every driver_info in the linker list, indexed by + * the driver_info idx value. + * + * @dev: Device created from this idx + */ +struct driver_rt { + struct udevice *dev; +}; + /** * NOTE: Avoid using these except in extreme circumstances, where device tree * is not feasible (e.g. serial driver in SPL where <8KB of SRAM is * available). U-Boot's driver model uses device tree for configuration. + * + * When of-platdata is in use, U_BOOT_DEVICE() cannot be used outside of the + * dt-platdata.c file created by dtoc */ +#if CONFIG_IS_ENABLED(OF_PLATDATA) && !defined(DT_PLATDATA_C) +#define U_BOOT_DEVICE(__name) _Static_assert(false, \ + "Cannot use U_BOOT_DEVICE with of-platdata. Please use devicetree instead") +#else #define U_BOOT_DEVICE(__name) \ ll_entry_declare(struct driver_info, __name, driver_info) +#endif /* Declare a list of devices. The argument is a driver_info[] array */ #define U_BOOT_DEVICES(__name) \ ll_entry_declare_list(struct driver_info, __name, driver_info) -/* Get a pointer to a given driver */ +/** + * Get a pointer to a given device info given its name + * + * With the declaration U_BOOT_DEVICE(name), DM_GET_DEVICE(name) will return a + * pointer to the struct driver_info created by that declaration. + * + * if OF_PLATDATA is enabled, from this it is possible to use the @dev member of + * struct driver_info to find the device pointer itself. + * + * TODO(sjg@chromium.org): U_BOOT_DEVICE() tells U-Boot to create a device, so + * the naming seems sensible, but DM_GET_DEVICE() is a bit of misnomer, since it + * finds the driver_info record, not the device. + * + * @__name: Driver name (C identifier, not a string. E.g. gpio7_at_ff7e0000) + * @return struct driver_info * to the driver that created the device + */ #define DM_GET_DEVICE(__name) \ ll_entry_get(struct driver_info, __name, driver_info) diff --git a/include/dm/util.h b/include/dm/util.h index 9773db6de1..01a044992f 100644 --- a/include/dm/util.h +++ b/include/dm/util.h @@ -6,7 +6,7 @@ #ifndef __DM_UTIL_H #define __DM_UTIL_H -#ifdef CONFIG_DM_WARN +#if CONFIG_IS_ENABLED(DM_WARN) void dm_warn(const char *fmt, ...); #else static inline void dm_warn(const char *fmt, ...) |