Commit 2c578a1b authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Simon Horman

ARM: shmobile: r8a7790: add Audio DMAC support

R-Car H2 has many DMACs
(ex SYS-DMAC, 2D-DMAC, Audio-DMAC, USB-DMAC etc)
and, these DMAEngine needs DMA slave IDs to use it.

This patch adds new DMA slave ID list for r8a7790.
There, common part has RCAR_DMA_xxx prefix,
and Audio DMAC part has AUDIO_DMAC_SLAVE_xxx prefix.

Audio DMAC can be controlled via sh-dma-engine
Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent f5b2947e
......@@ -3,6 +3,31 @@
#include <mach/rcar-gen2.h>
/* DMA slave IDs */
enum {
RCAR_DMA_SLAVE_INVALID,
AUDIO_DMAC_SLAVE_SSI0_TX,
AUDIO_DMAC_SLAVE_SSI0_RX,
AUDIO_DMAC_SLAVE_SSI1_TX,
AUDIO_DMAC_SLAVE_SSI1_RX,
AUDIO_DMAC_SLAVE_SSI2_TX,
AUDIO_DMAC_SLAVE_SSI2_RX,
AUDIO_DMAC_SLAVE_SSI3_TX,
AUDIO_DMAC_SLAVE_SSI3_RX,
AUDIO_DMAC_SLAVE_SSI4_TX,
AUDIO_DMAC_SLAVE_SSI4_RX,
AUDIO_DMAC_SLAVE_SSI5_TX,
AUDIO_DMAC_SLAVE_SSI5_RX,
AUDIO_DMAC_SLAVE_SSI6_TX,
AUDIO_DMAC_SLAVE_SSI6_RX,
AUDIO_DMAC_SLAVE_SSI7_TX,
AUDIO_DMAC_SLAVE_SSI7_RX,
AUDIO_DMAC_SLAVE_SSI8_TX,
AUDIO_DMAC_SLAVE_SSI8_RX,
AUDIO_DMAC_SLAVE_SSI9_TX,
AUDIO_DMAC_SLAVE_SSI9_RX,
};
void r8a7790_add_standard_devices(void);
void r8a7790_add_dt_devices(void);
void r8a7790_clock_init(void);
......
......@@ -24,12 +24,100 @@
#include <linux/platform_data/gpio-rcar.h>
#include <linux/platform_data/irq-renesas-irqc.h>
#include <linux/serial_sci.h>
#include <linux/sh_dma.h>
#include <linux/sh_timer.h>
#include <mach/common.h>
#include <mach/dma-register.h>
#include <mach/irqs.h>
#include <mach/r8a7790.h>
#include <asm/mach/arch.h>
/* Audio-DMAC */
#define AUDIO_DMAC_SLAVE(_id, _addr, t, r) \
{ \
.slave_id = AUDIO_DMAC_SLAVE_## _id ##_TX, \
.addr = _addr + 0x8, \
.chcr = CHCR_TX(XMIT_SZ_32BIT), \
.mid_rid = t, \
}, { \
.slave_id = AUDIO_DMAC_SLAVE_## _id ##_RX, \
.addr = _addr + 0xc, \
.chcr = CHCR_RX(XMIT_SZ_32BIT), \
.mid_rid = r, \
}
static const struct sh_dmae_slave_config r8a7790_audio_dmac_slaves[] = {
AUDIO_DMAC_SLAVE(SSI0, 0xec241000, 0x01, 0x02),
AUDIO_DMAC_SLAVE(SSI1, 0xec241040, 0x03, 0x04),
AUDIO_DMAC_SLAVE(SSI2, 0xec241080, 0x05, 0x06),
AUDIO_DMAC_SLAVE(SSI3, 0xec2410c0, 0x07, 0x08),
AUDIO_DMAC_SLAVE(SSI4, 0xec241100, 0x09, 0x0a),
AUDIO_DMAC_SLAVE(SSI5, 0xec241140, 0x0b, 0x0c),
AUDIO_DMAC_SLAVE(SSI6, 0xec241180, 0x0d, 0x0e),
AUDIO_DMAC_SLAVE(SSI7, 0xec2411c0, 0x0f, 0x10),
AUDIO_DMAC_SLAVE(SSI8, 0xec241200, 0x11, 0x12),
AUDIO_DMAC_SLAVE(SSI9, 0xec241240, 0x13, 0x14),
};
#define DMAE_CHANNEL(a, b) \
{ \
.offset = (a) - 0x20, \
.dmars = (a) - 0x20 + 0x40, \
.chclr_bit = (b), \
.chclr_offset = 0x80 - 0x20, \
}
static const struct sh_dmae_channel r8a7790_audio_dmac_channels[] = {
DMAE_CHANNEL(0x8000, 0),
DMAE_CHANNEL(0x8080, 1),
DMAE_CHANNEL(0x8100, 2),
DMAE_CHANNEL(0x8180, 3),
DMAE_CHANNEL(0x8200, 4),
DMAE_CHANNEL(0x8280, 5),
DMAE_CHANNEL(0x8300, 6),
DMAE_CHANNEL(0x8380, 7),
DMAE_CHANNEL(0x8400, 8),
DMAE_CHANNEL(0x8480, 9),
DMAE_CHANNEL(0x8500, 10),
DMAE_CHANNEL(0x8580, 11),
DMAE_CHANNEL(0x8600, 12),
};
static struct sh_dmae_pdata r8a7790_audio_dmac_platform_data = {
.slave = r8a7790_audio_dmac_slaves,
.slave_num = ARRAY_SIZE(r8a7790_audio_dmac_slaves),
.channel = r8a7790_audio_dmac_channels,
.channel_num = ARRAY_SIZE(r8a7790_audio_dmac_channels),
.ts_low_shift = TS_LOW_SHIFT,
.ts_low_mask = TS_LOW_BIT << TS_LOW_SHIFT,
.ts_high_shift = TS_HI_SHIFT,
.ts_high_mask = TS_HI_BIT << TS_HI_SHIFT,
.ts_shift = dma_ts_shift,
.ts_shift_num = ARRAY_SIZE(dma_ts_shift),
.dmaor_init = DMAOR_DME,
.chclr_present = 1,
.chclr_bitwise = 1,
};
static struct resource r8a7790_audio_dmac_resources[] = {
/* Channel registers and DMAOR for low */
DEFINE_RES_MEM(0xec700020, 0x8663 - 0x20),
DEFINE_RES_IRQ(gic_spi(346)),
DEFINE_RES_NAMED(gic_spi(320), 13, NULL, IORESOURCE_IRQ),
/* Channel registers and DMAOR for hi */
DEFINE_RES_MEM(0xec720020, 0x8663 - 0x20), /* hi */
DEFINE_RES_IRQ(gic_spi(347)),
DEFINE_RES_NAMED(gic_spi(333), 13, NULL, IORESOURCE_IRQ),
};
#define r8a7790_register_audio_dmac(id) \
platform_device_register_resndata( \
&platform_bus, "sh-dma-engine", id, \
&r8a7790_audio_dmac_resources[id * 3], 3, \
&r8a7790_audio_dmac_platform_data, \
sizeof(r8a7790_audio_dmac_platform_data))
static const struct resource pfc_resources[] __initconst = {
DEFINE_RES_MEM(0xe6060000, 0x250),
};
......@@ -101,6 +189,8 @@ void __init r8a7790_pinmux_init(void)
r8a7790_register_i2c(1);
r8a7790_register_i2c(2);
r8a7790_register_i2c(3);
r8a7790_register_audio_dmac(0);
r8a7790_register_audio_dmac(1);
}
#define __R8A7790_SCIF(scif_type, _scscr, index, baseaddr, irq) \
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment