summaryrefslogtreecommitdiff
path: root/drivers/dma
diff options
context:
space:
mode:
authorMasahiro Yamada <yamada.m@jp.panasonic.com>2014-07-30 19:11:41 +0900
committerTom Rini <trini@ti.com>2014-08-09 11:17:04 -0400
commit8ac22a60e29c4d0925e3d640a3607eabb2732b26 (patch)
treed9c43e2208f31b56ea3634397a158877aa2b0584 /drivers/dma
parent0596d35d80f5090440bd9a2a2beaacb268ff59c0 (diff)
downloadu-boot-8ac22a60e29c4d0925e3d640a3607eabb2732b26.tar.gz
u-boot-8ac22a60e29c4d0925e3d640a3607eabb2732b26.tar.bz2
u-boot-8ac22a60e29c4d0925e3d640a3607eabb2732b26.zip
omap: clean-up dead configs
The following configs are not defined at all. - CONFIG_OMAP1510 - CONFIG_OMAP_1510P1 - CONFIG_OMAP_SX1 - CONFIG_OMAP3_DMA - CONFIG_OMAP3_ZOOM2 - CONFIG_OMAP_INNOVATOR Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/Makefile1
-rw-r--r--drivers/dma/omap3_dma.c167
2 files changed, 0 insertions, 168 deletions
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 8b2821b762..a79c3919dd 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -8,4 +8,3 @@
obj-$(CONFIG_FSLDMAFEC) += MCD_tasksInit.o MCD_dmaApi.o MCD_tasks.o
obj-$(CONFIG_APBH_DMA) += apbh_dma.o
obj-$(CONFIG_FSL_DMA) += fsl_dma.o
-obj-$(CONFIG_OMAP3_DMA) += omap3_dma.o
diff --git a/drivers/dma/omap3_dma.c b/drivers/dma/omap3_dma.c
deleted file mode 100644
index 3320b3d08d..0000000000
--- a/drivers/dma/omap3_dma.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/* Copyright (C) 2011
- * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/* This is a basic implementation of the SDMA/DMA4 controller of OMAP3
- * Tested on Silicon Revision major:0x4 minor:0x0
- */
-
-#include <common.h>
-#include <asm/arch/cpu.h>
-#include <asm/arch/omap3.h>
-#include <asm/arch/dma.h>
-#include <asm/io.h>
-#include <asm/errno.h>
-
-static struct dma4 *dma4_cfg = (struct dma4 *)OMAP34XX_DMA4_BASE;
-uint32_t dma_active; /* if a transfer is started the respective
- bit is set for the logical channel */
-
-/* Check if we have the given channel
- * PARAMETERS:
- * chan: Channel number
- *
- * RETURN of non-zero means error */
-static inline int check_channel(uint32_t chan)
-{
- if (chan < CHAN_NR_MIN || chan > CHAN_NR_MAX)
- return -EINVAL;
- return 0;
-}
-
-static inline void reset_irq(uint32_t chan)
-{
- /* reset IRQ reason */
- writel(0x1DFE, &dma4_cfg->chan[chan].csr);
- /* reset IRQ */
- writel((1 << chan), &dma4_cfg->irqstatus_l[0]);
- dma_active &= ~(1 << chan);
-}
-
-/* Set Source, Destination and Size of DMA transfer for the
- * specified channel.
- * PARAMETERS:
- * chan: channel to use
- * src: source of the transfer
- * dst: destination of the transfer
- * sze: Size of the transfer
- *
- * RETURN of non-zero means error */
-int omap3_dma_conf_transfer(uint32_t chan, uint32_t *src, uint32_t *dst,
- uint32_t sze)
-{
- if (check_channel(chan))
- return -EINVAL;
- /* CDSA0 */
- writel((uint32_t)src, &dma4_cfg->chan[chan].cssa);
- writel((uint32_t)dst, &dma4_cfg->chan[chan].cdsa);
- writel(sze, &dma4_cfg->chan[chan].cen);
-return 0;
-}
-
-/* Start the DMA transfer */
-int omap3_dma_start_transfer(uint32_t chan)
-{
- uint32_t val;
-
- if (check_channel(chan))
- return -EINVAL;
-
- val = readl(&dma4_cfg->chan[chan].ccr);
- /* Test for channel already in use */
- if (val & CCR_ENABLE_ENABLE)
- return -EBUSY;
-
- writel((val | CCR_ENABLE_ENABLE), &dma4_cfg->chan[chan].ccr);
- dma_active |= (1 << chan);
- debug("started transfer...\n");
- return 0;
-}
-
-/* Busy-waiting for a DMA transfer
- * This has to be called before another transfer is started
- * PARAMETER
- * chan: Channel to wait for
- *
- * RETURN of non-zero means error*/
-int omap3_dma_wait_for_transfer(uint32_t chan)
-{
- uint32_t val;
-
- if (!(dma_active & (1 << chan))) {
- val = readl(&dma4_cfg->irqstatus_l[0]);
- if (!(val & chan)) {
- debug("dma: The channel you are trying to wait for "
- "was never activated - ERROR\n");
- return -1; /* channel was never active */
- }
- }
-
- /* all irqs on line 0 */
- while (!(readl(&dma4_cfg->irqstatus_l[0]) & (1 << chan)))
- asm("nop");
-
- val = readl(&dma4_cfg->chan[chan].csr);
- if ((val & CSR_TRANS_ERR) | (val & CSR_SUPERVISOR_ERR) |
- (val & CSR_MISALIGNED_ADRS_ERR)) {
- debug("err code: %X\n", val);
- debug("dma: transfer error detected\n");
- reset_irq(chan);
- return -1;
- }
- reset_irq(chan);
- return 0;
-}
-
-/* Get the revision of the DMA module
- * PARAMETER
- * minor: Address of minor revision to write
- * major: Address of major revision to write
- *
- * RETURN of non-zero means error
- */
-int omap3_dma_get_revision(uint32_t *minor, uint32_t *major)
-{
- uint32_t val;
-
- /* debug information */
- val = readl(&dma4_cfg->revision);
- *major = (val & 0x000000F0) >> 4;
- *minor = (val & 0x0000000F);
- debug("DMA Silicon revision (maj/min): 0x%X/0x%X\n", *major, *minor);
- return 0;
-}
-
-/* Initial config of omap dma
- */
-void omap3_dma_init(void)
-{
- dma_active = 0;
- /* All interrupts on channel 0 */
- writel(0xFFFFFFFF, &dma4_cfg->irqenable_l[0]);
-}
-
-/* set channel config to config
- *
- * RETURN of non-zero means error */
-int omap3_dma_conf_chan(uint32_t chan, struct dma4_chan *config)
-{
- if (check_channel(chan))
- return -EINVAL;
-
- dma4_cfg->chan[chan] = *config;
- return 0;
-}
-
-/* get channel config to config
- *
- * RETURN of non-zero means error */
-int omap3_dma_get_conf_chan(uint32_t chan, struct dma4_chan *config)
-{
- if (check_channel(chan))
- return -EINVAL;
- *config = dma4_cfg->chan[chan];
- return 0;
-}