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提交 f8151e5c 编写于 作者: A Anand Gadiyar 提交者： Tony Lindgren
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ARM: OMAP: Add DMA support for chaining and 3430 

Add DMA support for chaining and 3430.

Also remove old DEBUG_PRINTS as noted by Russell King.
Signed-off-by: NAnand Gadiyar <gadiyar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
上级 5eb3bb9c
展开全部 隐藏空白更改
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Showing with 905 addition and 74 deletion
arch/arm/plat-omap/dma.c
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此差异已折叠。
include/asm-arm/arch-omap/dma.h
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......@@ -45,22 +45,28 @@
#define OMAP_DMA_PCHD_SR (OMAP_DMA_BASE + 0x4c0)
/* Hardware registers for omap2 */
#define OMAP24XX_DMA_BASE (L4_24XX_BASE + 0x56000)
#define OMAP_DMA4_REVISION (OMAP24XX_DMA_BASE + 0x00)
#define OMAP_DMA4_GCR_REG (OMAP24XX_DMA_BASE + 0x78)
#define OMAP_DMA4_IRQSTATUS_L0 (OMAP24XX_DMA_BASE + 0x08)
#define OMAP_DMA4_IRQSTATUS_L1 (OMAP24XX_DMA_BASE + 0x0c)
#define OMAP_DMA4_IRQSTATUS_L2 (OMAP24XX_DMA_BASE + 0x10)
#define OMAP_DMA4_IRQSTATUS_L3 (OMAP24XX_DMA_BASE + 0x14)
#define OMAP_DMA4_IRQENABLE_L0 (OMAP24XX_DMA_BASE + 0x18)
#define OMAP_DMA4_IRQENABLE_L1 (OMAP24XX_DMA_BASE + 0x1c)
#define OMAP_DMA4_IRQENABLE_L2 (OMAP24XX_DMA_BASE + 0x20)
#define OMAP_DMA4_IRQENABLE_L3 (OMAP24XX_DMA_BASE + 0x24)
#define OMAP_DMA4_SYSSTATUS (OMAP24XX_DMA_BASE + 0x28)
#define OMAP_DMA4_CAPS_0 (OMAP24XX_DMA_BASE + 0x64)
#define OMAP_DMA4_CAPS_2 (OMAP24XX_DMA_BASE + 0x6c)
#define OMAP_DMA4_CAPS_3 (OMAP24XX_DMA_BASE + 0x70)
#define OMAP_DMA4_CAPS_4 (OMAP24XX_DMA_BASE + 0x74)
#if defined(CONFIG_ARCH_OMAP3)
#define OMAP_DMA4_BASE (L4_34XX_BASE + 0x56000)
#else /* CONFIG_ARCH_OMAP2 */
#define OMAP_DMA4_BASE (L4_24XX_BASE + 0x56000)
#endif
#define OMAP_DMA4_REVISION (OMAP_DMA4_BASE + 0x00)
#define OMAP_DMA4_GCR_REG (OMAP_DMA4_BASE + 0x78)
#define OMAP_DMA4_IRQSTATUS_L0 (OMAP_DMA4_BASE + 0x08)
#define OMAP_DMA4_IRQSTATUS_L1 (OMAP_DMA4_BASE + 0x0c)
#define OMAP_DMA4_IRQSTATUS_L2 (OMAP_DMA4_BASE + 0x10)
#define OMAP_DMA4_IRQSTATUS_L3 (OMAP_DMA4_BASE + 0x14)
#define OMAP_DMA4_IRQENABLE_L0 (OMAP_DMA4_BASE + 0x18)
#define OMAP_DMA4_IRQENABLE_L1 (OMAP_DMA4_BASE + 0x1c)
#define OMAP_DMA4_IRQENABLE_L2 (OMAP_DMA4_BASE + 0x20)
#define OMAP_DMA4_IRQENABLE_L3 (OMAP_DMA4_BASE + 0x24)
#define OMAP_DMA4_SYSSTATUS (OMAP_DMA4_BASE + 0x28)
#define OMAP_DMA4_OCP_SYSCONFIG (OMAP_DMA4_BASE + 0x2c)
#define OMAP_DMA4_CAPS_0 (OMAP_DMA4_BASE + 0x64)
#define OMAP_DMA4_CAPS_2 (OMAP_DMA4_BASE + 0x6c)
#define OMAP_DMA4_CAPS_3 (OMAP_DMA4_BASE + 0x70)
#define OMAP_DMA4_CAPS_4 (OMAP_DMA4_BASE + 0x74)
#ifdef CONFIG_ARCH_OMAP1
......@@ -86,19 +92,19 @@
#define OMAP_LOGICAL_DMA_CH_COUNT 32 /* REVISIT: Is this 32 + 2? */
/* Common channel specific registers for omap2 */
#define OMAP_DMA_CCR_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x80)
#define OMAP_DMA_CLNK_CTRL_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x84)
#define OMAP_DMA_CICR_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x88)
#define OMAP_DMA_CSR_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x8c)
#define OMAP_DMA_CSDP_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x90)
#define OMAP_DMA_CEN_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x94)
#define OMAP_DMA_CFN_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x98)
#define OMAP_DMA_CSEI_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xa4)
#define OMAP_DMA_CSFI_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xa8)
#define OMAP_DMA_CDEI_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xac)
#define OMAP_DMA_CDFI_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xb0)
#define OMAP_DMA_CSAC_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xb4)
#define OMAP_DMA_CDAC_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xb8)
#define OMAP_DMA_CCR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x80)
#define OMAP_DMA_CLNK_CTRL_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x84)
#define OMAP_DMA_CICR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x88)
#define OMAP_DMA_CSR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x8c)
#define OMAP_DMA_CSDP_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x90)
#define OMAP_DMA_CEN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x94)
#define OMAP_DMA_CFN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x98)
#define OMAP_DMA_CSEI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xa4)
#define OMAP_DMA_CSFI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xa8)
#define OMAP_DMA_CDEI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xac)
#define OMAP_DMA_CDFI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xb0)
#define OMAP_DMA_CSAC_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xb4)
#define OMAP_DMA_CDAC_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xb8)
#endif
......@@ -113,11 +119,11 @@
#define OMAP1_DMA_LCH_CTRL_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x2a)
/* Channel specific registers only on omap2 */
#define OMAP2_DMA_CSSA_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0x9c)
#define OMAP2_DMA_CDSA_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xa0)
#define OMAP2_DMA_CCEN_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xbc)
#define OMAP2_DMA_CCFN_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xc0)
#define OMAP2_DMA_COLOR_REG(n) __REG32(OMAP24XX_DMA_BASE + 0x60 * (n) + 0xc4)
#define OMAP2_DMA_CSSA_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x9c)
#define OMAP2_DMA_CDSA_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xa0)
#define OMAP2_DMA_CCEN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xbc)
#define OMAP2_DMA_CCFN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xc0)
#define OMAP2_DMA_COLOR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xc4)
/*----------------------------------------------------------------------------*/
......@@ -297,6 +303,10 @@
#define OMAP_DMA_SYNC_ELEMENT 0x00
#define OMAP_DMA_SYNC_FRAME 0x01
#define OMAP_DMA_SYNC_BLOCK 0x02
#define OMAP_DMA_SYNC_PACKET 0x03
#define OMAP_DMA_SRC_SYNC 0x01
#define OMAP_DMA_DST_SYNC 0x00
#define OMAP_DMA_PORT_EMIFF 0x00
#define OMAP_DMA_PORT_EMIFS 0x01
......@@ -310,6 +320,29 @@
#define OMAP_DMA_AMODE_SINGLE_IDX 0x02
#define OMAP_DMA_AMODE_DOUBLE_IDX 0x03
#define DMA_DEFAULT_FIFO_DEPTH 0x10
#define DMA_DEFAULT_ARB_RATE 0x01
/* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
#define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */
#define DMA_THREAD_RESERVE_ONET (0x01 << 12)
#define DMA_THREAD_RESERVE_TWOT (0x02 << 12)
#define DMA_THREAD_RESERVE_THREET (0x03 << 12)
#define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */
#define DMA_THREAD_FIFO_75 (0x01 << 14)
#define DMA_THREAD_FIFO_25 (0x02 << 14)
#define DMA_THREAD_FIFO_50 (0x03 << 14)
/* Chaining modes*/
#ifndef CONFIG_ARCH_OMAP1
#define OMAP_DMA_STATIC_CHAIN 0x1
#define OMAP_DMA_DYNAMIC_CHAIN 0x2
#define OMAP_DMA_CHAIN_ACTIVE 0x1
#define OMAP_DMA_CHAIN_INACTIVE 0x0
#endif
#define DMA_CH_PRIO_HIGH 0x1
#define DMA_CH_PRIO_LOW 0x0 /* Def */
/* LCD DMA block numbers */
enum {
OMAP_LCD_DMA_B1_TOP,
......@@ -359,6 +392,13 @@ struct omap_dma_channel_params {
int src_or_dst_synch; /* source synch(1) or destination synch(0) */
int ie; /* interrupt enabled */
unsigned char read_prio;/* read priority */
unsigned char write_prio;/* write priority */
#ifndef CONFIG_ARCH_OMAP1
enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
#endif
};
......@@ -409,6 +449,33 @@ extern dma_addr_t omap_get_dma_dst_pos(int lch);
extern int omap_get_dma_src_addr_counter(int lch);
extern void omap_clear_dma(int lch);
extern int omap_dma_running(void);
extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
int tparams);
extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
unsigned char write_prio);
/* Chaining APIs */
#ifndef CONFIG_ARCH_OMAP1
extern int omap_request_dma_chain(int dev_id, const char *dev_name,
void (*callback) (int chain_id, u16 ch_status,
void *data),
int *chain_id, int no_of_chans,
int chain_mode,
struct omap_dma_channel_params params);
extern int omap_free_dma_chain(int chain_id);
extern int omap_dma_chain_a_transfer(int chain_id, int src_start,
int dest_start, int elem_count,
int frame_count, void *callbk_data);
extern int omap_start_dma_chain_transfers(int chain_id);
extern int omap_stop_dma_chain_transfers(int chain_id);
extern int omap_get_dma_chain_index(int chain_id, int *ei, int *fi);
extern int omap_get_dma_chain_dst_pos(int chain_id);
extern int omap_get_dma_chain_src_pos(int chain_id);
extern int omap_modify_dma_chain_params(int chain_id,
struct omap_dma_channel_params params);
extern int omap_dma_chain_status(int chain_id);
#endif
/* LCD DMA functions */
extern int omap_request_lcd_dma(void (* callback)(u16 status, void *data),
......
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