Re: [PATCH 4/5] spi: tegra: remove support of legacy DMA driver based access
On Thu, Sep 06, 2012 at 05:50:07PM -0600, Stephen Warren wrote: On 08/16/2012 08:13 AM, Laxman Dewangan wrote: Remove the support code which uses the legacy APB DMA driver for accessing the SPI FIFO. The driver will use the dmaengine based APB DMA driver for accessing reqding/writing to SPI FIFO. I'd like to take this patch through the Tegra tree, since it relies on the previous Tegra patches to convert to dmaengine. Could I please get an ack if that's OK? Thanks. I don't seem to have the patch for review, not sure why. -- Got visibility? Most devs has no idea what their production app looks like. Find out how fast your code is with AppDynamics Lite. http://ad.doubleclick.net/clk;262219671;13503038;y? http://info.appdynamics.com/FreeJavaPerformanceDownload.html ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
Re: [PATCH 4/5] spi: tegra: remove support of legacy DMA driver based access
On 09/06/2012 05:50 PM, Stephen Warren wrote: On 08/16/2012 08:13 AM, Laxman Dewangan wrote: Remove the support code which uses the legacy APB DMA driver for accessing the SPI FIFO. The driver will use the dmaengine based APB DMA driver for accessing reqding/writing to SPI FIFO. Signed-off-by: Laxman Dewangan ldewan...@nvidia.com Grant, Mark, I'd like to take this patch through the Tegra tree, since it relies on the previous Tegra patches to convert to dmaengine. Could I please get an ack if that's OK? Thanks. I'm still looking for an ack. -- Got visibility? Most devs has no idea what their production app looks like. Find out how fast your code is with AppDynamics Lite. http://ad.doubleclick.net/clk;262219671;13503038;y? http://info.appdynamics.com/FreeJavaPerformanceDownload.html ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
Re: [PATCH 4/5] spi: tegra: remove support of legacy DMA driver based access
On Fri, Sep 14, 2012 at 09:57:48AM -0600, Stephen Warren wrote: On 09/06/2012 05:50 PM, Stephen Warren wrote: I'd like to take this patch through the Tegra tree, since it relies on the previous Tegra patches to convert to dmaengine. Could I please get an ack if that's OK? Thanks. I'm still looking for an ack. Again, I don't have this patch. -- Got visibility? Most devs has no idea what their production app looks like. Find out how fast your code is with AppDynamics Lite. http://ad.doubleclick.net/clk;262219671;13503038;y? http://info.appdynamics.com/FreeJavaPerformanceDownload.html ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
Re: [PATCH 4/5] spi: tegra: remove support of legacy DMA driver based access
On 08/16/2012 08:13 AM, Laxman Dewangan wrote: Remove the support code which uses the legacy APB DMA driver for accessing the SPI FIFO. The driver will use the dmaengine based APB DMA driver for accessing reqding/writing to SPI FIFO. Signed-off-by: Laxman Dewangan ldewan...@nvidia.com Please note that I've applied this to Tegra's for-3.7/dmaengine branch, even though it hasn't been ack'd by an SPI maintainer. -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://ad.doubleclick.net/clk;258768047;13503038;j? http://info.appdynamics.com/FreeJavaPerformanceDownload.html ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
Re: [PATCH 4/5] spi: tegra: remove support of legacy DMA driver based access
On 08/16/2012 08:13 AM, Laxman Dewangan wrote: Remove the support code which uses the legacy APB DMA driver for accessing the SPI FIFO. The driver will use the dmaengine based APB DMA driver for accessing reqding/writing to SPI FIFO. Signed-off-by: Laxman Dewangan ldewan...@nvidia.com Grant, Mark, I'd like to take this patch through the Tegra tree, since it relies on the previous Tegra patches to convert to dmaengine. Could I please get an ack if that's OK? Thanks. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
[PATCH 4/5] spi: tegra: remove support of legacy DMA driver based access
Remove the support code which uses the legacy APB DMA driver
for accessing the SPI FIFO.
The driver will use the dmaengine based APB DMA driver for
accessing reqding/writing to SPI FIFO.
Signed-off-by: Laxman Dewangan ldewan...@nvidia.com
---
drivers/spi/Kconfig |2 +-
drivers/spi/spi-tegra.c | 55 +--
2 files changed, 2 insertions(+), 55 deletions(-)
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 5f84b55..2d198a0 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -366,7 +366,7 @@ config SPI_STMP3XXX
config SPI_TEGRA
tristate Nvidia Tegra SPI controller
- depends on ARCH_TEGRA (TEGRA_SYSTEM_DMA || TEGRA20_APB_DMA)
+ depends on ARCH_TEGRA TEGRA20_APB_DMA
help
SPI driver for NVidia Tegra SoCs
diff --git a/drivers/spi/spi-tegra.c b/drivers/spi/spi-tegra.c
index ef52c1c..488d9b6 100644
--- a/drivers/spi/spi-tegra.c
+++ b/drivers/spi/spi-tegra.c
@@ -164,23 +164,15 @@ struct spi_tegra_data {
* for the generic case.
*/
int dma_req_len;
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
- struct tegra_dma_reqrx_dma_req;
- struct tegra_dma_channel *rx_dma;
-#else
struct dma_chan *rx_dma;
struct dma_slave_config sconfig;
struct dma_async_tx_descriptor *rx_dma_desc;
dma_cookie_trx_cookie;
-#endif
u32 *rx_bb;
dma_addr_t rx_bb_phys;
};
-#if !defined(CONFIG_TEGRA_SYSTEM_DMA)
static void tegra_spi_rx_dma_complete(void *args);
-#endif
-
static inline unsigned long spi_tegra_readl(struct spi_tegra_data *tspi,
unsigned long reg)
{
@@ -204,10 +196,6 @@ static void spi_tegra_go(struct spi_tegra_data *tspi)
val = ~SLINK_DMA_BLOCK_SIZE(~0) ~SLINK_DMA_EN;
val |= SLINK_DMA_BLOCK_SIZE(tspi-dma_req_len / 4 - 1);
spi_tegra_writel(tspi, val, SLINK_DMA_CTL);
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
- tspi-rx_dma_req.size = tspi-dma_req_len;
- tegra_dma_enqueue_req(tspi-rx_dma, tspi-rx_dma_req);
-#else
tspi-rx_dma_desc = dmaengine_prep_slave_single(tspi-rx_dma,
tspi-rx_bb_phys, tspi-dma_req_len,
DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
@@ -219,7 +207,6 @@ static void spi_tegra_go(struct spi_tegra_data *tspi)
tspi-rx_dma_desc-callback_param = tspi;
tspi-rx_cookie = dmaengine_submit(tspi-rx_dma_desc);
dma_async_issue_pending(tspi-rx_dma);
-#endif
val |= SLINK_DMA_EN;
spi_tegra_writel(tspi, val, SLINK_DMA_CTL);
@@ -405,19 +392,12 @@ static void handle_spi_rx_dma_complete(struct
spi_tegra_data *tspi)
spin_unlock_irqrestore(tspi-lock, flags);
}
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
-static void tegra_spi_rx_dma_complete(struct tegra_dma_req *req)
-{
- struct spi_tegra_data *tspi = req-dev;
- handle_spi_rx_dma_complete(tspi);
-}
-#else
+
static void tegra_spi_rx_dma_complete(void *args)
{
struct spi_tegra_data *tspi = args;
handle_spi_rx_dma_complete(tspi);
}
-#endif
static int spi_tegra_setup(struct spi_device *spi)
{
@@ -509,9 +489,7 @@ static int __devinit spi_tegra_probe(struct platform_device
*pdev)
struct spi_tegra_data *tspi;
struct resource *r;
int ret;
-#if !defined(CONFIG_TEGRA_SYSTEM_DMA)
dma_cap_mask_t mask;
-#endif
master = spi_alloc_master(pdev-dev, sizeof *tspi);
if (master == NULL) {
@@ -563,14 +541,6 @@ static int __devinit spi_tegra_probe(struct
platform_device *pdev)
INIT_LIST_HEAD(tspi-queue);
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
- tspi-rx_dma = tegra_dma_allocate_channel(TEGRA_DMA_MODE_ONESHOT);
- if (!tspi-rx_dma) {
- dev_err(pdev-dev, can not allocate rx dma channel\n);
- ret = -ENODEV;
- goto err3;
- }
-#else
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
tspi-rx_dma = dma_request_channel(mask, NULL, NULL);
@@ -580,8 +550,6 @@ static int __devinit spi_tegra_probe(struct platform_device
*pdev)
goto err3;
}
-#endif
-
tspi-rx_bb = dma_alloc_coherent(pdev-dev, sizeof(u32) * BB_LEN,
tspi-rx_bb_phys, GFP_KERNEL);
if (!tspi-rx_bb) {
@@ -590,17 +558,6 @@ static int __devinit spi_tegra_probe(struct
platform_device *pdev)
goto err4;
}
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
- tspi-rx_dma_req.complete = tegra_spi_rx_dma_complete;
- tspi-rx_dma_req.to_memory = 1;
- tspi-rx_dma_req.dest_addr = tspi-rx_bb_phys;
- tspi-rx_dma_req.dest_bus_width = 32;
- tspi-rx_dma_req.source_addr = tspi-phys + SLINK_RX_FIFO;
- tspi-rx_dma_req.source_bus_width = 32;
- tspi-rx_dma_req.source_wrap = 4;
- tspi-rx_dma_req.req_sel =
