diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.10/0123-mtd-nand-pxa3xx-Make-dma-code-dependent-on-dma-capab.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.10/0123-mtd-nand-pxa3xx-Make-dma-code-dependent-on-dma-capab.patch | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/target/linux/mvebu/patches-3.10/0123-mtd-nand-pxa3xx-Make-dma-code-dependent-on-dma-capab.patch b/target/linux/mvebu/patches-3.10/0123-mtd-nand-pxa3xx-Make-dma-code-dependent-on-dma-capab.patch deleted file mode 100644 index 87bec0c..0000000 --- a/target/linux/mvebu/patches-3.10/0123-mtd-nand-pxa3xx-Make-dma-code-dependent-on-dma-capab.patch +++ /dev/null @@ -1,106 +0,0 @@ -From 085ced2b9e159dbeae029e338958b8c8ae9073b9 Mon Sep 17 00:00:00 2001 -From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> -Date: Mon, 12 Aug 2013 14:14:56 -0300 -Subject: [PATCH 123/203] mtd: nand: pxa3xx: Make dma code dependent on dma - capable platforms - -This patch adds a macro ARCH_HAS_DMA to compile-out arch specific -dma code, namely pxa_request_dma() and pxa_free_dma(). These symbols -are available only in pxa, which makes impossible to build the driver in -other platforms than ARCH_PXA. - -In order to handle non-dma capable platforms, we implement a fallbacks that -allocate buffers as if 'use_dma=false', putting the dma related code -under the ARCH_HAS_DMA conditional. - -Please note that the correct way to handle this is to migrate the -dma code to use of the mmp_pdma dmaengine driver. However, currently -this is not possible because the two dmaengine drivers can't work together. - -Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> -Tested-by: Daniel Mack <zonque@gmail.com> -Signed-off-by: Brian Norris <computersforpeace@gmail.com> -Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> ---- - drivers/mtd/nand/pxa3xx_nand.c | 34 ++++++++++++++++++++++++++++++++++ - 1 file changed, 34 insertions(+) - ---- a/drivers/mtd/nand/pxa3xx_nand.c -+++ b/drivers/mtd/nand/pxa3xx_nand.c -@@ -25,7 +25,14 @@ - #include <linux/of.h> - #include <linux/of_device.h> - -+#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) -+#define ARCH_HAS_DMA -+#endif -+ -+#ifdef ARCH_HAS_DMA - #include <mach/dma.h> -+#endif -+ - #include <linux/platform_data/mtd-nand-pxa3xx.h> - - #define CHIP_DELAY_TIMEOUT (2 * HZ/10) -@@ -381,6 +388,7 @@ static void handle_data_pio(struct pxa3x - } - } - -+#ifdef ARCH_HAS_DMA - static void start_data_dma(struct pxa3xx_nand_info *info) - { - struct pxa_dma_desc *desc = info->data_desc; -@@ -427,6 +435,10 @@ static void pxa3xx_nand_data_dma_irq(int - enable_int(info, NDCR_INT_MASK); - nand_writel(info, NDSR, NDSR_WRDREQ | NDSR_RDDREQ); - } -+#else -+static void start_data_dma(struct pxa3xx_nand_info *info) -+{} -+#endif - - static irqreturn_t pxa3xx_nand_irq(int irq, void *devid) - { -@@ -905,6 +917,7 @@ static int pxa3xx_nand_detect_config(str - */ - #define MAX_BUFF_SIZE PAGE_SIZE - -+#ifdef ARCH_HAS_DMA - static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) - { - struct platform_device *pdev = info->pdev; -@@ -950,6 +963,20 @@ static void pxa3xx_nand_free_buff(struct - kfree(info->data_buff); - } - } -+#else -+static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) -+{ -+ info->data_buff = kmalloc(MAX_BUFF_SIZE, GFP_KERNEL); -+ if (info->data_buff == NULL) -+ return -ENOMEM; -+ return 0; -+} -+ -+static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info) -+{ -+ kfree(info->data_buff); -+} -+#endif - - static int pxa3xx_nand_sensing(struct pxa3xx_nand_info *info) - { -@@ -1265,6 +1292,13 @@ static int pxa3xx_nand_probe(struct plat - struct pxa3xx_nand_info *info; - int ret, cs, probe_success; - -+#ifndef ARCH_HAS_DMA -+ if (use_dma) { -+ use_dma = 0; -+ dev_warn(&pdev->dev, -+ "This platform can't do DMA on this device\n"); -+ } -+#endif - ret = pxa3xx_nand_probe_dt(pdev); - if (ret) - return ret; |