diff options
Diffstat (limited to 'drivers/dma/mmp_tdma.c')
| -rw-r--r-- | drivers/dma/mmp_tdma.c | 56 |
1 files changed, 16 insertions, 40 deletions
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index dbc6a48424fa..ba03321eeff7 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -14,9 +14,9 @@ #include <linux/slab.h> #include <linux/dmaengine.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/device.h> -#include <linux/platform_data/dma-mmp_tdma.h> -#include <linux/of_device.h> +#include <linux/genalloc.h> #include <linux/of_dma.h> #include "dmaengine.h" @@ -346,9 +346,9 @@ static irqreturn_t mmp_tdma_int_handler(int irq, void *dev_id) return IRQ_NONE; } -static void dma_do_tasklet(unsigned long data) +static void dma_do_tasklet(struct tasklet_struct *t) { - struct mmp_tdma_chan *tdmac = (struct mmp_tdma_chan *)data; + struct mmp_tdma_chan *tdmac = from_tasklet(tdmac, t, tasklet); dmaengine_desc_get_callback_invoke(&tdmac->desc, NULL); } @@ -552,12 +552,9 @@ static void mmp_tdma_issue_pending(struct dma_chan *chan) mmp_tdma_enable_chan(tdmac); } -static int mmp_tdma_remove(struct platform_device *pdev) +static void mmp_tdma_remove(struct platform_device *pdev) { - if (pdev->dev.of_node) - of_dma_controller_free(pdev->dev.of_node); - - return 0; + of_dma_controller_free(pdev->dev.of_node); } static int mmp_tdma_chan_init(struct mmp_tdma_device *tdev, @@ -586,7 +583,7 @@ static int mmp_tdma_chan_init(struct mmp_tdma_device *tdev, tdmac->pool = pool; tdmac->status = DMA_COMPLETE; tdev->tdmac[tdmac->idx] = tdmac; - tasklet_init(&tdmac->tasklet, dma_do_tasklet, (unsigned long)tdmac); + tasklet_setup(&tdmac->tasklet, dma_do_tasklet); /* add the channel to tdma_chan list */ list_add_tail(&tdmac->chan.device_node, @@ -637,19 +634,13 @@ MODULE_DEVICE_TABLE(of, mmp_tdma_dt_ids); static int mmp_tdma_probe(struct platform_device *pdev) { enum mmp_tdma_type type; - const struct of_device_id *of_id; struct mmp_tdma_device *tdev; - struct resource *iores; int i, ret; int irq = 0, irq_num = 0; int chan_num = TDMA_CHANNEL_NUM; struct gen_pool *pool = NULL; - of_id = of_match_device(mmp_tdma_dt_ids, &pdev->dev); - if (of_id) - type = (enum mmp_tdma_type) of_id->data; - else - type = platform_get_device_id(pdev)->driver_data; + type = (kernel_ulong_t)device_get_match_data(&pdev->dev); /* always have couple channels */ tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL); @@ -663,17 +654,13 @@ static int mmp_tdma_probe(struct platform_device *pdev) irq_num++; } - iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); - tdev->base = devm_ioremap_resource(&pdev->dev, iores); + tdev->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(tdev->base)) return PTR_ERR(tdev->base); INIT_LIST_HEAD(&tdev->device.channels); - if (pdev->dev.of_node) - pool = of_gen_pool_get(pdev->dev.of_node, "asram", 0); - else - pool = sram_get_gpool("asram"); + pool = of_gen_pool_get(pdev->dev.of_node, "asram", 0); if (!pool) { dev_err(&pdev->dev, "asram pool not available\n"); return -ENOMEM; @@ -682,7 +669,7 @@ static int mmp_tdma_probe(struct platform_device *pdev) if (irq_num != chan_num) { irq = platform_get_irq(pdev, 0); ret = devm_request_irq(&pdev->dev, irq, - mmp_tdma_int_handler, 0, "tdma", tdev); + mmp_tdma_int_handler, IRQF_SHARED, "tdma", tdev); if (ret) return ret; } @@ -731,32 +718,22 @@ static int mmp_tdma_probe(struct platform_device *pdev) return ret; } - if (pdev->dev.of_node) { - ret = of_dma_controller_register(pdev->dev.of_node, - mmp_tdma_xlate, tdev); - if (ret) { - dev_err(tdev->device.dev, - "failed to register controller\n"); - return ret; - } + ret = of_dma_controller_register(pdev->dev.of_node, + mmp_tdma_xlate, tdev); + if (ret) { + dev_err(tdev->device.dev, "failed to register controller\n"); + return ret; } dev_info(tdev->device.dev, "initialized\n"); return 0; } -static const struct platform_device_id mmp_tdma_id_table[] = { - { "mmp-adma", MMP_AUD_TDMA }, - { "pxa910-squ", PXA910_SQU }, - { }, -}; - static struct platform_driver mmp_tdma_driver = { .driver = { .name = "mmp-tdma", .of_match_table = mmp_tdma_dt_ids, }, - .id_table = mmp_tdma_id_table, .probe = mmp_tdma_probe, .remove = mmp_tdma_remove, }; @@ -765,6 +742,5 @@ module_platform_driver(mmp_tdma_driver); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("MMP Two-Channel DMA Driver"); -MODULE_ALIAS("platform:mmp-tdma"); MODULE_AUTHOR("Leo Yan <leoy@marvell.com>"); MODULE_AUTHOR("Zhangfei Gao <zhangfei.gao@marvell.com>"); |