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usb: musb: Set up function pointers for DMA 

Set up function pointers for DMA so get closer to
being able to build in all the DMA engines.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Tony Lindgren 2015-05-01 12:29:28 -07:00 committed by Felipe Balbi
parent f8e9f34f80
commit 7f6283ed6f
17 changed files with 118 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/musb/am35x.c
View File

@ -443,6 +443,10 @@ static const struct musb_platform_ops am35x_ops = {
.exit = am35x_musb_exit,
.read_fifo = am35x_read_fifo,
#ifdef CONFIG_USB_INVENTRA_DMA
.dma_init = musbhs_dma_controller_create,
.dma_exit = musbhs_dma_controller_destroy,
#endif
.enable = am35x_musb_enable,
.disable = am35x_musb_disable,

4
drivers/usb/musb/blackfin.c
View File

@ -478,6 +478,10 @@ static const struct musb_platform_ops bfin_ops = {
.fifo_mode = 2,
.read_fifo = bfin_read_fifo,
.write_fifo = bfin_write_fifo,
#ifdef CONFIG_USB_INVENTRA_DMA
.dma_init = musbhs_dma_controller_create,
.dma_exit = musbhs_dma_controller_destroy,
#endif
.enable = bfin_musb_enable,
.disable = bfin_musb_disable,

9
drivers/usb/musb/cppi_dma.c
View File

@ -1297,7 +1297,8 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
EXPORT_SYMBOL_GPL(cppi_interrupt);
/* Instantiate a software object representing a DMA controller. */
struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mregs)
struct dma_controller *
cppi_dma_controller_create(struct musb *musb, void __iomem *mregs)
{
struct cppi *controller;
struct device *dev = musb->controller;
@ -1334,7 +1335,7 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mr
if (irq > 0) {
if (request_irq(irq, cppi_interrupt, 0, "cppi-dma", musb)) {
dev_err(dev, "request_irq %d failed!\n", irq);
dma_controller_destroy(&controller->controller);
musb_dma_controller_destroy(&controller->controller);
return NULL;
}
controller->irq = irq;
@ -1343,11 +1344,12 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *mr
cppi_controller_start(controller);
return &controller->controller;
}
EXPORT_SYMBOL_GPL(cppi_dma_controller_create);
/*
* Destroy a previously-instantiated DMA controller.
*/
void dma_controller_destroy(struct dma_controller *c)
void cppi_dma_controller_destroy(struct dma_controller *c)
{
struct cppi *cppi;
@ -1363,6 +1365,7 @@ void dma_controller_destroy(struct dma_controller *c)
kfree(cppi);
}
EXPORT_SYMBOL_GPL(cppi_dma_controller_destroy);
/*
* Context: controller irqlocked, endpoint selected

4
drivers/usb/musb/da8xx.c
View File

@ -463,6 +463,10 @@ static const struct musb_platform_ops da8xx_ops = {
.exit = da8xx_musb_exit,
.fifo_mode = 2,
#ifdef CONFIG_USB_TI_CPPI_DMA
.dma_init = cppi_dma_controller_create,
.dma_exit = cppi_dma_controller_destroy,
#endif
.enable = da8xx_musb_enable,
.disable = da8xx_musb_disable,

4
drivers/usb/musb/davinci.c
View File

@ -495,6 +495,10 @@ static const struct musb_platform_ops davinci_ops = {
.init = davinci_musb_init,
.exit = davinci_musb_exit,
#ifdef CONFIG_USB_TI_CPPI_DMA
.dma_init = cppi_dma_controller_create,
.dma_exit = cppi_dma_controller_destroy,
#endif
.enable = davinci_musb_enable,
.disable = davinci_musb_disable,

4
drivers/usb/musb/jz4740.c
View File

@ -105,6 +105,10 @@ static int jz4740_musb_exit(struct musb *musb)
return 0;
}
/*
* DMA has not been confirmed to work with CONFIG_USB_INVENTRA_DMA,
* so let's not set up the dma function pointers yet.
*/
static const struct musb_platform_ops jz4740_musb_ops = {
.quirks = MUSB_DMA_INVENTRA | MUSB_INDEXED_EP,
.fifo_mode = 2,

25
drivers/usb/musb/musb_core.c
View File

@ -389,6 +389,15 @@ EXPORT_SYMBOL_GPL(musb_readl);
void (*musb_writel)(void __iomem *addr, unsigned offset, u32 data);
EXPORT_SYMBOL_GPL(musb_writel);
#ifndef CONFIG_MUSB_PIO_ONLY
struct dma_controller *
(*musb_dma_controller_create)(struct musb *musb, void __iomem *base);
EXPORT_SYMBOL(musb_dma_controller_create);
void (*musb_dma_controller_destroy)(struct dma_controller *c);
EXPORT_SYMBOL(musb_dma_controller_destroy);
#endif
/*
* New style IO functions
*/
@ -2059,6 +2068,15 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
if (musb->ops->writel)
musb_writel = musb->ops->writel;
#ifndef CONFIG_MUSB_PIO_ONLY
if (!musb->ops->dma_init || !musb->ops->dma_exit) {
dev_err(dev, "DMA controller not set\n");
goto fail2;
}
musb_dma_controller_create = musb->ops->dma_init;
musb_dma_controller_destroy = musb->ops->dma_exit;
#endif
if (musb->ops->read_fifo)
musb->io.read_fifo = musb->ops->read_fifo;
else
@ -2078,7 +2096,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
pm_runtime_get_sync(musb->controller);
if (use_dma && dev->dma_mask) {
musb->dma_controller = dma_controller_create(musb, musb->mregs);
musb->dma_controller =
musb_dma_controller_create(musb, musb->mregs);
if (IS_ERR(musb->dma_controller)) {
status = PTR_ERR(musb->dma_controller);
goto fail2_5;
@ -2189,7 +2208,7 @@ fail3:
cancel_delayed_work_sync(&musb->finish_resume_work);
cancel_delayed_work_sync(&musb->deassert_reset_work);
if (musb->dma_controller)
dma_controller_destroy(musb->dma_controller);
musb_dma_controller_destroy(musb->dma_controller);
fail2_5:
pm_runtime_put_sync(musb->controller);
@ -2248,7 +2267,7 @@ static int musb_remove(struct platform_device *pdev)
musb_shutdown(pdev);
if (musb->dma_controller)
dma_controller_destroy(musb->dma_controller);
musb_dma_controller_destroy(musb->dma_controller);
cancel_work_sync(&musb->irq_work);
cancel_delayed_work_sync(&musb->finish_resume_work);

5
drivers/usb/musb/musb_core.h
View File

@ -157,6 +157,8 @@ struct musb_io;
* @writel: write 32 bits
* @read_fifo: reads the fifo
* @write_fifo: writes to fifo
* @dma_init: platform specific dma init function
* @dma_exit: platform specific dma exit function
* @init: turns on clocks, sets up platform-specific registers, etc
* @exit: undoes @init
* @set_mode: forcefully changes operating mode
@ -195,6 +197,9 @@ struct musb_platform_ops {
void (*writel)(void __iomem *addr, unsigned offset, u32 data);
void (*read_fifo)(struct musb_hw_ep *hw_ep, u16 len, u8 *buf);
void (*write_fifo)(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf);
struct dma_controller *
(*dma_init) (struct musb *musb, void __iomem *base);
void (*dma_exit)(struct dma_controller *c);
int (*set_mode)(struct musb *musb, u8 mode);
void (*try_idle)(struct musb *musb, unsigned long timeout);
int (*recover)(struct musb *musb);

8
drivers/usb/musb/musb_cppi41.c
View File

@ -678,7 +678,7 @@ err:
return ret;
}
void dma_controller_destroy(struct dma_controller *c)
void cppi41_dma_controller_destroy(struct dma_controller *c)
{
struct cppi41_dma_controller *controller = container_of(c,
struct cppi41_dma_controller, controller);
@ -687,9 +687,10 @@ void dma_controller_destroy(struct dma_controller *c)
cppi41_dma_controller_stop(controller);
kfree(controller);
}
EXPORT_SYMBOL_GPL(cppi41_dma_controller_destroy);
struct dma_controller *dma_controller_create(struct musb *musb,
void __iomem *base)
struct dma_controller *
cppi41_dma_controller_create(struct musb *musb, void __iomem *base)
{
struct cppi41_dma_controller *controller;
int ret = 0;
@ -726,3 +727,4 @@ kzalloc_fail:
return ERR_PTR(ret);
return NULL;
}
EXPORT_SYMBOL_GPL(cppi41_dma_controller_create);

32
drivers/usb/musb/musb_dma.h
View File

@ -202,19 +202,41 @@ struct dma_controller {
extern void musb_dma_completion(struct musb *musb, u8 epnum, u8 transmit);
#ifdef CONFIG_MUSB_PIO_ONLY
static inline struct dma_controller *dma_controller_create(struct musb *m,
void __iomem *io)
static inline struct dma_controller *
musb_dma_controller_create(struct musb *m, void __iomem *io)
{
return NULL;
}
static inline void dma_controller_destroy(struct dma_controller *d) { }
static inline void musb_dma_controller_destroy(struct dma_controller *d) { }
#else
extern struct dma_controller *dma_controller_create(struct musb *, void __iomem *);
extern struct dma_controller *
(*musb_dma_controller_create)(struct musb *, void __iomem *);
extern void dma_controller_destroy(struct dma_controller *);
extern void (*musb_dma_controller_destroy)(struct dma_controller *);
#endif
/* Platform specific DMA functions */
extern struct dma_controller *
musbhs_dma_controller_create(struct musb *musb, void __iomem *base);
extern void musbhs_dma_controller_destroy(struct dma_controller *c);
extern struct dma_controller *
tusb_dma_controller_create(struct musb *musb, void __iomem *base);
extern void tusb_dma_controller_destroy(struct dma_controller *c);
extern struct dma_controller *
cppi_dma_controller_create(struct musb *musb, void __iomem *base);
extern void cppi_dma_controller_destroy(struct dma_controller *c);
extern struct dma_controller *
cppi41_dma_controller_create(struct musb *musb, void __iomem *base);
extern void cppi41_dma_controller_destroy(struct dma_controller *c);
extern struct dma_controller *
ux500_dma_controller_create(struct musb *musb, void __iomem *base);
extern void ux500_dma_controller_destroy(struct dma_controller *c);
#endif /* __MUSB_DMA_H__ */

4
drivers/usb/musb/musb_dsps.c
View File

@ -638,6 +638,10 @@ static struct musb_platform_ops dsps_ops = {
.init = dsps_musb_init,
.exit = dsps_musb_exit,
#ifdef CONFIG_USB_TI_CPPI41_DMA
.dma_init = cppi41_dma_controller_create,
.dma_exit = cppi41_dma_controller_destroy,
#endif
.enable = dsps_musb_enable,
.disable = dsps_musb_disable,

9
drivers/usb/musb/musbhsdma.c
View File

@ -357,7 +357,7 @@ done:
return retval;
}
void dma_controller_destroy(struct dma_controller *c)
void musbhs_dma_controller_destroy(struct dma_controller *c)
{
struct musb_dma_controller *controller = container_of(c,
struct musb_dma_controller, controller);
@ -369,8 +369,10 @@ void dma_controller_destroy(struct dma_controller *c)
kfree(controller);
}
EXPORT_SYMBOL_GPL(musbhs_dma_controller_destroy);
struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *base)
struct dma_controller *musbhs_dma_controller_create(struct musb *musb,
void __iomem *base)
{
struct musb_dma_controller *controller;
struct device *dev = musb->controller;
@ -398,7 +400,7 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba
if (request_irq(irq, dma_controller_irq, 0,
dev_name(musb->controller), &controller->controller)) {
dev_err(dev, "request_irq %d failed!\n", irq);
dma_controller_destroy(&controller->controller);
musb_dma_controller_destroy(&controller->controller);
return NULL;
}
@ -407,3 +409,4 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba
return &controller->controller;
}
EXPORT_SYMBOL_GPL(musbhs_dma_controller_create);

4
drivers/usb/musb/omap2430.c
View File

@ -494,6 +494,10 @@ static int omap2430_musb_exit(struct musb *musb)
static const struct musb_platform_ops omap2430_ops = {
.quirks = MUSB_DMA_INVENTRA,
#ifdef CONFIG_USB_INVENTRA_DMA
.dma_init = musbhs_dma_controller_create,
.dma_exit = musbhs_dma_controller_destroy,
#endif
.init = omap2430_musb_init,
.exit = omap2430_musb_exit,

4
drivers/usb/musb/tusb6010.c
View File

@ -1192,6 +1192,10 @@ static const struct musb_platform_ops tusb_ops = {
.writeb = tusb_writeb,
.read_fifo = tusb_read_fifo,
.write_fifo = tusb_write_fifo,
#ifdef CONFIG_USB_TUSB_OMAP_DMA
.dma_init = tusb_dma_controller_create,
.dma_exit = tusb_dma_controller_destroy,
#endif
.enable = tusb_musb_enable,
.disable = tusb_musb_disable,

9
drivers/usb/musb/tusb6010_omap.c
View File

@ -625,7 +625,7 @@ static void tusb_omap_dma_release(struct dma_channel *channel)
channel = NULL;
}
void dma_controller_destroy(struct dma_controller *c)
void tusb_dma_controller_destroy(struct dma_controller *c)
{
struct tusb_omap_dma *tusb_dma;
int i;
@ -644,8 +644,10 @@ void dma_controller_destroy(struct dma_controller *c)
kfree(tusb_dma);
}
EXPORT_SYMBOL_GPL(tusb_dma_controller_destroy);
struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *base)
struct dma_controller *
tusb_dma_controller_create(struct musb *musb, void __iomem *base)
{
void __iomem *tbase = musb->ctrl_base;
struct tusb_omap_dma *tusb_dma;
@ -701,7 +703,8 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba
return &tusb_dma->controller;
cleanup:
dma_controller_destroy(&tusb_dma->controller);
musb_dma_controller_destroy(&tusb_dma->controller);
out:
return NULL;
}
EXPORT_SYMBOL_GPL(tusb_dma_controller_create);

4
drivers/usb/musb/ux500.c
View File

@ -189,6 +189,10 @@ static int ux500_musb_exit(struct musb *musb)
static const struct musb_platform_ops ux500_ops = {
.quirks = MUSB_DMA_UX500 | MUSB_INDEXED_EP,
#ifdef CONFIG_USB_UX500_DMA
.dma_init = ux500_dma_controller_create,
.dma_exit = ux500_dma_controller_destroy,
#endif
.init = ux500_musb_init,
.exit = ux500_musb_exit,
.fifo_mode = 5,

8
drivers/usb/musb/ux500_dma.c
View File

@ -359,7 +359,7 @@ static int ux500_dma_controller_start(struct ux500_dma_controller *controller)
return 0;
}
void dma_controller_destroy(struct dma_controller *c)
void ux500_dma_controller_destroy(struct dma_controller *c)
{
struct ux500_dma_controller *controller = container_of(c,
struct ux500_dma_controller, controller);
@ -367,9 +367,10 @@ void dma_controller_destroy(struct dma_controller *c)
ux500_dma_controller_stop(controller);
kfree(controller);
}
EXPORT_SYMBOL_GPL(ux500_dma_controller_destroy);
struct dma_controller *dma_controller_create(struct musb *musb,
void __iomem *base)
struct dma_controller *
ux500_dma_controller_create(struct musb *musb, void __iomem *base)
{
struct ux500_dma_controller *controller;
struct platform_device *pdev = to_platform_device(musb->controller);
@ -407,3 +408,4 @@ plat_get_fail:
kzalloc_fail:
return NULL;
}
EXPORT_SYMBOL_GPL(ux500_dma_controller_create);