diff options
Diffstat (limited to 'drivers/staging/fsl-mc/bus/dprc-driver.c')
| -rw-r--r-- | drivers/staging/fsl-mc/bus/dprc-driver.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/drivers/staging/fsl-mc/bus/dprc-driver.c b/drivers/staging/fsl-mc/bus/dprc-driver.c index c5ee463..f6e6211 100644 --- a/drivers/staging/fsl-mc/bus/dprc-driver.c +++ b/drivers/staging/fsl-mc/bus/dprc-driver.c @@ -1,7 +1,7 @@ /* * Freescale data path resource container (DPRC) driver * - * Copyright (C) 2014 Freescale Semiconductor, Inc. + * Copyright (C) 2014-2016 Freescale Semiconductor, Inc. * Author: German Rivera <German.Rivera@freescale.com> * * This file is licensed under the terms of the GNU General Public @@ -160,6 +160,8 @@ static void check_plugged_state_change(struct fsl_mc_device *mc_dev, * dprc_add_new_devices - Adds devices to the logical bus for a DPRC * * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object + * @driver_override: driver override to apply to new objects found in the + * DPRC, or NULL, if none. * @obj_desc_array: array of device descriptors for child devices currently * present in the physical DPRC. * @num_child_objects_in_mc: number of entries in obj_desc_array @@ -169,6 +171,7 @@ static void check_plugged_state_change(struct fsl_mc_device *mc_dev, * in the physical DPRC. */ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev, + const char *driver_override, struct dprc_obj_desc *obj_desc_array, int num_child_objects_in_mc) { @@ -188,11 +191,12 @@ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev, child_dev = fsl_mc_device_lookup(obj_desc, mc_bus_dev); if (child_dev) { check_plugged_state_change(child_dev, obj_desc); + put_device(&child_dev->dev); continue; } error = fsl_mc_device_add(obj_desc, NULL, &mc_bus_dev->dev, - &child_dev); + driver_override, &child_dev); if (error < 0) continue; } @@ -202,6 +206,8 @@ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev, * dprc_scan_objects - Discover objects in a DPRC * * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object + * @driver_override: driver override to apply to new objects found in the + * DPRC, or NULL, if none. * @total_irq_count: total number of IRQs needed by objects in the DPRC. * * Detects objects added and removed from a DPRC and synchronizes the @@ -217,6 +223,7 @@ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev, * of the device drivers for the non-allocatable devices. */ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, + const char *driver_override, unsigned int *total_irq_count) { int num_child_objects; @@ -297,7 +304,7 @@ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, dprc_remove_devices(mc_bus_dev, child_obj_desc_array, num_child_objects); - dprc_add_new_devices(mc_bus_dev, child_obj_desc_array, + dprc_add_new_devices(mc_bus_dev, driver_override, child_obj_desc_array, num_child_objects); if (child_obj_desc_array) @@ -328,7 +335,7 @@ int dprc_scan_container(struct fsl_mc_device *mc_bus_dev) * Discover objects in the DPRC: */ mutex_lock(&mc_bus->scan_mutex); - error = dprc_scan_objects(mc_bus_dev, &irq_count); + error = dprc_scan_objects(mc_bus_dev, NULL, &irq_count); mutex_unlock(&mc_bus->scan_mutex); if (error < 0) goto error; @@ -415,7 +422,7 @@ static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg) DPRC_IRQ_EVENT_OBJ_CREATED)) { unsigned int irq_count; - error = dprc_scan_objects(mc_dev, &irq_count); + error = dprc_scan_objects(mc_dev, NULL, &irq_count); if (error < 0) { /* * If the error is -ENXIO, we ignore it, as it indicates @@ -505,7 +512,7 @@ static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev) dprc_irq0_handler, dprc_irq0_handler_thread, IRQF_NO_SUSPEND | IRQF_ONESHOT, - "FSL MC DPRC irq0", + dev_name(&mc_dev->dev), &mc_dev->dev); if (error < 0) { dev_err(&mc_dev->dev, @@ -597,6 +604,7 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev); bool mc_io_created = false; bool msi_domain_set = false; + u16 major_ver, minor_ver; if (WARN_ON(strcmp(mc_dev->obj_desc.type, "dprc") != 0)) return -EINVAL; @@ -669,13 +677,21 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) goto error_cleanup_open; } - if (mc_bus->dprc_attr.version.major < DPRC_MIN_VER_MAJOR || - (mc_bus->dprc_attr.version.major == DPRC_MIN_VER_MAJOR && - mc_bus->dprc_attr.version.minor < DPRC_MIN_VER_MINOR)) { + error = dprc_get_api_version(mc_dev->mc_io, 0, + &major_ver, + &minor_ver); + if (error < 0) { + dev_err(&mc_dev->dev, "dprc_get_api_version() failed: %d\n", + error); + goto error_cleanup_open; + } + + if (major_ver < DPRC_MIN_VER_MAJOR || + (major_ver == DPRC_MIN_VER_MAJOR && + minor_ver < DPRC_MIN_VER_MINOR)) { dev_err(&mc_dev->dev, "ERROR: DPRC version %d.%d not supported\n", - mc_bus->dprc_attr.version.major, - mc_bus->dprc_attr.version.minor); + major_ver, minor_ver); error = -ENOTSUPP; goto error_cleanup_open; } |