diff options
| -rw-r--r-- | drivers/mtd/onenand/omap2.c | 52 |
1 files changed, 21 insertions, 31 deletions
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index e4857a41760d..1cd78a076759 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -152,17 +152,13 @@ static int omap2_onenand_wait(struct mtd_info *mtd, int state) } reinit_completion(&c->irq_done); - if (c->gpio_irq) { - result = gpio_get_value(c->gpio_irq); - if (result == -1) { - ctrl = read_reg(c, ONENAND_REG_CTRL_STATUS); - intr = read_reg(c, ONENAND_REG_INTERRUPT); - wait_err("gpio error", state, ctrl, intr); - return -EIO; - } - } else - result = 0; - if (result == 0) { + result = gpio_get_value(c->gpio_irq); + if (result < 0) { + ctrl = read_reg(c, ONENAND_REG_CTRL_STATUS); + intr = read_reg(c, ONENAND_REG_INTERRUPT); + wait_err("gpio error", state, ctrl, intr); + return -EIO; + } else if (result == 0) { int retry_cnt = 0; retry: if (!wait_for_completion_io_timeout(&c->irq_done, @@ -450,6 +446,7 @@ static void omap2_onenand_shutdown(struct platform_device *pdev) static int omap2_onenand_probe(struct platform_device *pdev) { + dma_cap_mask_t mask; struct omap_onenand_platform_data *pdata; struct omap2_onenand *c; struct onenand_chip *this; @@ -513,31 +510,25 @@ static int omap2_onenand_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Failed to request GPIO%d for " "OneNAND\n", c->gpio_irq); goto err_iounmap; - } - gpio_direction_input(c->gpio_irq); + } + gpio_direction_input(c->gpio_irq); - if ((r = request_irq(gpio_to_irq(c->gpio_irq), - omap2_onenand_interrupt, IRQF_TRIGGER_RISING, - pdev->dev.driver->name, c)) < 0) - goto err_release_gpio; - } + if ((r = request_irq(gpio_to_irq(c->gpio_irq), + omap2_onenand_interrupt, IRQF_TRIGGER_RISING, + pdev->dev.driver->name, c)) < 0) + goto err_release_gpio; - if (pdata->dma_channel >= 0) { - dma_cap_mask_t mask; + this->wait = omap2_onenand_wait; + } - dma_cap_zero(mask); - dma_cap_set(DMA_MEMCPY, mask); + dma_cap_zero(mask); + dma_cap_set(DMA_MEMCPY, mask); - c->dma_chan = dma_request_channel(mask, NULL, NULL); - if (!c->dma_chan) - dev_info(&pdev->dev, - "failed to allocate DMA for OneNAND, " - "using PIO instead\n"); - } + c->dma_chan = dma_request_channel(mask, NULL, NULL); dev_info(&pdev->dev, "initializing on CS%d, phys base 0x%08lx, virtual " - "base %p, freq %d MHz\n", c->gpmc_cs, c->phys_base, - c->onenand.base, c->freq); + "base %p, freq %d MHz, %s mode\n", c->gpmc_cs, c->phys_base, + c->onenand.base, c->freq, c->dma_chan ? "DMA" : "PIO"); c->pdev = pdev; c->mtd.priv = &c->onenand; @@ -547,7 +538,6 @@ static int omap2_onenand_probe(struct platform_device *pdev) this = &c->onenand; if (c->dma_chan) { - this->wait = omap2_onenand_wait; this->read_bufferram = omap2_onenand_read_bufferram; this->write_bufferram = omap2_onenand_write_bufferram; } |