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authorArnd Bergmann <arnd@arndb.de>2022-04-02 01:28:23 +0300
committerArnd Bergmann <arnd@arndb.de>2022-04-22 12:08:43 +0300
commit52ef8efcb75e8a8aab88e74c1376c2785d9a5452 (patch)
treed25b0d3364958acc3e47aaba72551fe837424f84 /drivers/dma/ti
parent17ea03b75e5665c9ce4945aa5afd097f3c845cdf (diff)
downloadlinux-52ef8efcb75e8a8aab88e74c1376c2785d9a5452.tar.xz
dma: omap: hide legacy interface
The legacy interface for omap-dma is only used on OMAP1, and the same is true for the non-DT case. Make both of these conditional on CONFIG_ARCH_OMAP1 being set to simplify the dependency. The non-OMAP stub functions in include/linux/omap-dma.h are note needed any more either now, because they are only called on OMAP1. Acked-by: Tony Lindgren <tony@atomide.com> Acked-By: Vinod Koul <vkoul@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/dma/ti')
-rw-r--r--drivers/dma/ti/omap-dma.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/dma/ti/omap-dma.c b/drivers/dma/ti/omap-dma.c
index 8e52a0dc1f78..27f5019bdc1e 100644
--- a/drivers/dma/ti/omap-dma.c
+++ b/drivers/dma/ti/omap-dma.c
@@ -699,6 +699,11 @@ static void omap_dma_put_lch(struct omap_dmadev *od, int lch)
mutex_unlock(&od->lch_lock);
}
+static inline bool omap_dma_legacy(struct omap_dmadev *od)
+{
+ return IS_ENABLED(CONFIG_ARCH_OMAP1) && od->legacy;
+}
+
static int omap_dma_alloc_chan_resources(struct dma_chan *chan)
{
struct omap_dmadev *od = to_omap_dma_dev(chan->device);
@@ -706,7 +711,7 @@ static int omap_dma_alloc_chan_resources(struct dma_chan *chan)
struct device *dev = od->ddev.dev;
int ret;
- if (od->legacy) {
+ if (omap_dma_legacy(od)) {
ret = omap_request_dma(c->dma_sig, "DMA engine",
omap_dma_callback, c, &c->dma_ch);
} else {
@@ -718,7 +723,7 @@ static int omap_dma_alloc_chan_resources(struct dma_chan *chan)
if (ret >= 0) {
omap_dma_assign(od, c, c->dma_ch);
- if (!od->legacy) {
+ if (!omap_dma_legacy(od)) {
unsigned val;
spin_lock_irq(&od->irq_lock);
@@ -757,7 +762,7 @@ static void omap_dma_free_chan_resources(struct dma_chan *chan)
struct omap_dmadev *od = to_omap_dma_dev(chan->device);
struct omap_chan *c = to_omap_dma_chan(chan);
- if (!od->legacy) {
+ if (!omap_dma_legacy(od)) {
spin_lock_irq(&od->irq_lock);
od->irq_enable_mask &= ~BIT(c->dma_ch);
omap_dma_glbl_write(od, IRQENABLE_L1, od->irq_enable_mask);
@@ -768,7 +773,7 @@ static void omap_dma_free_chan_resources(struct dma_chan *chan)
od->lch_map[c->dma_ch] = NULL;
vchan_free_chan_resources(&c->vc);
- if (od->legacy)
+ if (omap_dma_legacy(od))
omap_free_dma(c->dma_ch);
else
omap_dma_put_lch(od, c->dma_ch);
@@ -1674,12 +1679,14 @@ static int omap_dma_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "omap_system_dma_plat_info is missing");
return -ENODEV;
}
- } else {
+ } else if (IS_ENABLED(CONFIG_ARCH_OMAP1)) {
od->cfg = &default_cfg;
od->plat = omap_get_plat_info();
if (!od->plat)
return -EPROBE_DEFER;
+ } else {
+ return -ENODEV;
}
od->reg_map = od->plat->reg_map;
@@ -1855,7 +1862,7 @@ static int omap_dma_remove(struct platform_device *pdev)
dma_async_device_unregister(&od->ddev);
- if (!od->legacy) {
+ if (!omap_dma_legacy(od)) {
/* Disable all interrupts */
omap_dma_glbl_write(od, IRQENABLE_L0, 0);
}