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ARM: SoC driver updates

Browse source 
These are changes for drivers that are intimately tied to some SoC
 and for some reason could not get merged through the respective
 subsystem maintainer tree.
 
 This time around, much of this is for at91, with the bulk of it being syscon
 and udc drivers.
 
 Also, there's:
 - coupled cpuidle support for Samsung Exynos4210
 - Renesas 73A0 common-clk work
 - of/platform changes to tear down DMA mappings on device destruction
 - a few updates to the TI Keystone knav code
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  This time around, much of this is for at91, with the bulk of it being
  syscon and udc drivers.

  Also, there's:
   - coupled cpuidle support for Samsung Exynos4210
   - Renesas 73A0 common-clk work
   - of/platform changes to tear down DMA mappings on device destruction
   - a few updates to the TI Keystone knav code"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (26 commits)
  cpuidle: exynos: add coupled cpuidle support for exynos4210
  ARM: EXYNOS: apply S5P_CENTRAL_SEQ_OPTION fix only when necessary
  soc: ti: knav_qmss_queue: change knav_range_setup_acc_irq to static
  soc: ti: knav_qmss_queue: makefile tweak to build as dynamic module
  pcmcia: at91_cf: depend on !ARCH_MULTIPLATFORM
  soc: ti: knav_qmss_queue: export API calls for use by user driver
  of/platform: teardown DMA mappings on device destruction
  usb: gadget: at91_udc: Allocate udc instance
  usb: gadget: at91_udc: Update DT binding documentation
  usb: gadget: at91_udc: Rework for multi-platform kernel support
  usb: gadget: at91_udc: Simplify probe and remove functions
  usb: gadget: at91_udc: Remove non-DT handling code
  usb: gadget: at91_udc: Document DT clocks and clock-names property
  usb: gadget: at91_udc: Drop uclk clock
  usb: gadget: at91_udc: Fix clock names
  mfd: syscon: Add Atmel SMC binding doc
  mfd: syscon: Add atmel-smc registers definition
  mfd: syscon: Add Atmel Matrix bus DT binding documentation
  mfd: syscon: Add atmel-matrix registers definition
  clk: shmobile: fix sparse NULL pointer warning
  ...
This commit is contained in:
Linus Torvalds 2015-02-17 09:38:59 -08:00
commit 18656782a8
28 changed files with 1570 additions and 268 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/soc/ti/Makefile
View file

@ -1,5 +1,6 @@
#
# TI Keystone SOC drivers
#
obj-$(CONFIG_KEYSTONE_NAVIGATOR_QMSS) += knav_qmss_queue.o knav_qmss_acc.o
obj-$(CONFIG_KEYSTONE_NAVIGATOR_QMSS) += knav_qmss.o
knav_qmss-y := knav_qmss_queue.o knav_qmss_acc.o
obj-$(CONFIG_KEYSTONE_NAVIGATOR_DMA) += knav_dma.o

2
drivers/soc/ti/knav_qmss_acc.c
View file

@ -209,7 +209,7 @@ static irqreturn_t knav_acc_int_handler(int irq, void *_instdata)
return IRQ_HANDLED;
}
int knav_range_setup_acc_irq(struct knav_range_info *range,
static int knav_range_setup_acc_irq(struct knav_range_info *range,
int queue, bool enabled)
{
struct knav_device *kdev = range->kdev;

9
drivers/soc/ti/knav_qmss_queue.c
View file

@ -626,6 +626,7 @@ int knav_queue_push(void *qhandle, dma_addr_t dma,
atomic_inc(&qh->stats.pushes);
return 0;
}
EXPORT_SYMBOL_GPL(knav_queue_push);
/**
* knav_queue_pop() - pop data (or descriptor) from the head of a queue
@ -663,6 +664,7 @@ dma_addr_t knav_queue_pop(void *qhandle, unsigned *size)
atomic_inc(&qh->stats.pops);
return dma;
}
EXPORT_SYMBOL_GPL(knav_queue_pop);
/* carve out descriptors and push into queue */
static void kdesc_fill_pool(struct knav_pool *pool)
@ -717,12 +719,14 @@ dma_addr_t knav_pool_desc_virt_to_dma(void *ph, void *virt)
struct knav_pool *pool = ph;
return pool->region->dma_start + (virt - pool->region->virt_start);
}
EXPORT_SYMBOL_GPL(knav_pool_desc_virt_to_dma);
void *knav_pool_desc_dma_to_virt(void *ph, dma_addr_t dma)
{
struct knav_pool *pool = ph;
return pool->region->virt_start + (dma - pool->region->dma_start);
}
EXPORT_SYMBOL_GPL(knav_pool_desc_dma_to_virt);
/**
* knav_pool_create() - Create a pool of descriptors
@ -878,6 +882,7 @@ void *knav_pool_desc_get(void *ph)
data = knav_pool_desc_dma_to_virt(pool, dma);
return data;
}
EXPORT_SYMBOL_GPL(knav_pool_desc_get);
/**
* knav_pool_desc_put() - return a descriptor to the pool
@ -890,6 +895,7 @@ void knav_pool_desc_put(void *ph, void *desc)
dma = knav_pool_desc_virt_to_dma(pool, desc);
knav_queue_push(pool->queue, dma, pool->region->desc_size, 0);
}
EXPORT_SYMBOL_GPL(knav_pool_desc_put);
/**
* knav_pool_desc_map() - Map descriptor for DMA transfer
@ -916,6 +922,7 @@ int knav_pool_desc_map(void *ph, void *desc, unsigned size,
return 0;
}
EXPORT_SYMBOL_GPL(knav_pool_desc_map);
/**
* knav_pool_desc_unmap() - Unmap descriptor after DMA transfer
@ -938,6 +945,7 @@ void *knav_pool_desc_unmap(void *ph, dma_addr_t dma, unsigned dma_sz)
prefetch(desc);
return desc;
}
EXPORT_SYMBOL_GPL(knav_pool_desc_unmap);
/**
* knav_pool_count() - Get the number of descriptors in pool.
@ -949,6 +957,7 @@ int knav_pool_count(void *ph)
struct knav_pool *pool = ph;
return knav_queue_get_count(pool->queue);
}
EXPORT_SYMBOL_GPL(knav_pool_count);
static void knav_queue_setup_region(struct knav_device *kdev,
struct knav_region *region)