diff options
Diffstat (limited to 'arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c')
| -rw-r--r-- | arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c | 67 |
1 files changed, 43 insertions, 24 deletions
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c index d61fb1c0c1a..37f7a89c10f 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c @@ -20,9 +20,9 @@ #include <asm/mpc52xx.h> #include <asm/time.h> -#include <sysdev/bestcomm/bestcomm.h> -#include <sysdev/bestcomm/bestcomm_priv.h> -#include <sysdev/bestcomm/gen_bd.h> +#include <linux/fsl/bestcomm/bestcomm.h> +#include <linux/fsl/bestcomm/bestcomm_priv.h> +#include <linux/fsl/bestcomm/gen_bd.h> MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); MODULE_DESCRIPTION("MPC5200 LocalPlus FIFO device driver"); @@ -170,7 +170,8 @@ static void mpc52xx_lpbfifo_kick(struct mpc52xx_lpbfifo_request *req) out_be32(lpbfifo.regs + LPBFIFO_REG_CONTROL, bit_fields); /* Kick it off */ - out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01); + if (!lpbfifo.req->defer_xfer_start) + out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01); if (dma) bcom_enable(lpbfifo.bcom_cur_task); } @@ -244,7 +245,7 @@ static irqreturn_t mpc52xx_lpbfifo_irq(int irq, void *dev_id) if (dma && !write) { spin_unlock_irqrestore(&lpbfifo.lock, flags); - pr_err("bogus LPBFIFO IRQ (dma and not writting)\n"); + pr_err("bogus LPBFIFO IRQ (dma and not writing)\n"); return IRQ_HANDLED; } @@ -421,6 +422,38 @@ int mpc52xx_lpbfifo_submit(struct mpc52xx_lpbfifo_request *req) } EXPORT_SYMBOL(mpc52xx_lpbfifo_submit); +int mpc52xx_lpbfifo_start_xfer(struct mpc52xx_lpbfifo_request *req) +{ + unsigned long flags; + + if (!lpbfifo.regs) + return -ENODEV; + + spin_lock_irqsave(&lpbfifo.lock, flags); + + /* + * If the req pointer is already set and a transfer was + * started on submit, then this transfer is in progress + */ + if (lpbfifo.req && !lpbfifo.req->defer_xfer_start) { + spin_unlock_irqrestore(&lpbfifo.lock, flags); + return -EBUSY; + } + + /* + * If the req was previously submitted but not + * started, start it now + */ + if (lpbfifo.req && lpbfifo.req == req && + lpbfifo.req->defer_xfer_start) { + out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01); + } + + spin_unlock_irqrestore(&lpbfifo.lock, flags); + return 0; +} +EXPORT_SYMBOL(mpc52xx_lpbfifo_start_xfer); + void mpc52xx_lpbfifo_abort(struct mpc52xx_lpbfifo_request *req) { unsigned long flags; @@ -437,7 +470,7 @@ void mpc52xx_lpbfifo_abort(struct mpc52xx_lpbfifo_request *req) } EXPORT_SYMBOL(mpc52xx_lpbfifo_abort); -static int __devinit mpc52xx_lpbfifo_probe(struct platform_device *op) +static int mpc52xx_lpbfifo_probe(struct platform_device *op) { struct resource res; int rc = -ENOMEM; @@ -507,7 +540,7 @@ static int __devinit mpc52xx_lpbfifo_probe(struct platform_device *op) } -static int __devexit mpc52xx_lpbfifo_remove(struct platform_device *op) +static int mpc52xx_lpbfifo_remove(struct platform_device *op) { if (lpbfifo.dev != &op->dev) return 0; @@ -531,7 +564,7 @@ static int __devexit mpc52xx_lpbfifo_remove(struct platform_device *op) return 0; } -static struct of_device_id mpc52xx_lpbfifo_match[] __devinitconst = { +static struct of_device_id mpc52xx_lpbfifo_match[] = { { .compatible = "fsl,mpc5200-lpbfifo", }, {}, }; @@ -543,20 +576,6 @@ static struct platform_driver mpc52xx_lpbfifo_driver = { .of_match_table = mpc52xx_lpbfifo_match, }, .probe = mpc52xx_lpbfifo_probe, - .remove = __devexit_p(mpc52xx_lpbfifo_remove), + .remove = mpc52xx_lpbfifo_remove, }; - -/*********************************************************************** - * Module init/exit - */ -static int __init mpc52xx_lpbfifo_init(void) -{ - return platform_driver_register(&mpc52xx_lpbfifo_driver); -} -module_init(mpc52xx_lpbfifo_init); - -static void __exit mpc52xx_lpbfifo_exit(void) -{ - platform_driver_unregister(&mpc52xx_lpbfifo_driver); -} -module_exit(mpc52xx_lpbfifo_exit); +module_platform_driver(mpc52xx_lpbfifo_driver); |