ish: remove unused ish_dma_page code

ish_dma_page was intended to be used in the aontaskfw implementation,
but we never used it. Remove the unused code.

BUG=none
BRANCH=none
TEST=make buildall -j

Change-Id: I33983a4e6c6de082078b8b6b59519fbc095d8022
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1631588
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1643846
Commit-Queue: Jett Rink <jettrink@chromium.org>
Tested-by: Jett Rink <jettrink@chromium.org>

2 files changed, 3 insertions, 40 deletions

diff --git a/chip/ish/dma.c b/chip/ish/dma.c
index d73b7410e5..a409dc6ad3 100644
--- a/chip/ish/dma.c
+++ b/chip/ish/dma.c
@@ -183,36 +183,6 @@ int ish_wait_for_dma_done(uint32_t ch)
 	return dma_poll(DMA_EN_REG_ADDR, 0, DMA_CH_EN_BIT(ch));
 }
 
-static int ish_dma_page_internal(uint32_t dst, uint32_t src, enum dma_mode mode)
-{
-	int rc;
-	uint32_t eflags = interrupt_lock();
-
-	if (!dma_init_called)
-		ish_dma_init();
-
-	/* Wait for DMA to be free */
-	rc = dma_poll(DMA_EN_REG_ADDR, 0,
-		      DMA_CH_EN_BIT(PAGING_CHAN) | DMA_CH_EN_BIT(KERNEL_CHAN));
-
-	if (rc == DMA_RC_OK)
-		rc = ish_dma_copy(PAGING_CHAN, dst, src, PAGE_SIZE, mode);
-
-	interrupt_unlock(eflags);
-	return rc;
-}
-
-/* DMA page between DRAM and SRAM. */
-int ish_dma_page(uint32_t dst, uint32_t src, int page_in)
-{
-	int ret = 0;
-
-	ret = ish_dma_page_internal(dst, src,
-				    (page_in ? UMA_TO_SRAM : SRAM_TO_UMA));
-
-	return ret;
-}
-
 void ish_dma_set_msb(uint32_t chan, uint32_t dst_msb, uint32_t src_msb)
 {
 	uint32_t eflags = interrupt_lock();
diff --git a/chip/ish/ish_dma.h b/chip/ish/ish_dma.h
index 8b06121234..2c76c7d319 100644
--- a/chip/ish/ish_dma.h
+++ b/chip/ish/ish_dma.h
@@ -44,6 +44,7 @@ enum dma_mode {
 void ish_dma_disable(void);
 /* Initialize  DMA engine */
 void ish_dma_init(void);
+
 /**
  * Main DMA transfer function
  *
@@ -64,16 +65,7 @@ int ish_dma_copy(uint32_t chan, uint32_t dst, uint32_t src, uint32_t length,
  * @param src_msb       Source DRAM upper 32 bits address
  */
 void ish_dma_set_msb(uint32_t chan, uint32_t dst_msb, uint32_t src_msb);
-/**
- * Page granularity transfer between SRAM and DRAM
- *
- * @param dst           Destination address
- * @param src           Source address
- * @param page_in       Is from DRAM to SRAM
- * @return DMA_RC_OK, or non-zero if error.
- */
-int ish_dma_page(uint32_t dst, uint32_t src,
-		 int page_in); /* API for page manager/d0i3 task */
+
 /**
  * Wait for DMA transfer finish
  *
@@ -81,6 +73,7 @@ int ish_dma_page(uint32_t dst, uint32_t src,
  * @return DMA_RC_OK, or non-zero if error.
  */
 int ish_wait_for_dma_done(uint32_t ch);
+
 /* Disable OCP (Open Core Protocol) fabric time out */
 void ish_dma_ocp_timeout_disable(void);
 #endif