@@ -66,6 +66,98 @@ static const struct resource du_resource
DEFINE_RES_IRQ(gic_spi(268)),
};
+#include <linux/sh_dma.h>
+#include <mach/dma-register.h>
+
+/* Local DMA slave IDs */
+enum {
+ RCAR_DMA_SLAVE_KOELSCH_INVALID = 0,
+};
+
+#define DMAE_CHANNEL(a, b) \
+{ \
+ .offset = (a) - 0x20, \
+ .dmars = (a) - 0x20 + 0x40, \
+ .chclr_bit = (b), \
+ .chclr_offset = 0x80 - 0x20, \
+}
+
+/* Sys-DMAC */
+#define SYS_DMAC_SLAVE(_id, _bit, _addr, toffset, roffset, t, r) \
+{ \
+ .slave_id = SYS_DMAC_SLAVE_## _id ##_TX, \
+ .addr = _addr + toffset, \
+ .chcr = CHCR_TX(XMIT_SZ_## _bit ##BIT), \
+ .mid_rid = t, \
+}, { \
+ .slave_id = SYS_DMAC_SLAVE_## _id ##_RX, \
+ .addr = _addr + roffset, \
+ .chcr = CHCR_RX(XMIT_SZ_## _bit ##BIT), \
+ .mid_rid = r, \
+}
+
+static const struct sh_dmae_slave_config r8a7791_sys_dmac_slaves[] = {
+};
+
+static const struct sh_dmae_channel r8a7791_sys_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),
+ DMAE_CHANNEL(0x8680, 13),
+ DMAE_CHANNEL(0x8700, 14),
+};
+
+static struct sh_dmae_pdata r8a7791_sys_dmac_platform_data = {
+ .slave = r8a7791_sys_dmac_slaves,
+ .slave_num = ARRAY_SIZE(r8a7791_sys_dmac_slaves),
+ .channel = r8a7791_sys_dmac_channels,
+ .channel_num = ARRAY_SIZE(r8a7791_sys_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,
+ .fourty_bits_addr = 1,
+};
+
+static struct resource r8a7791_sys_dmac_resources[] = {
+ /* Channel registers and DMAOR for low */
+ DEFINE_RES_MEM(0xe6700020, 0x8763 - 0x20),
+ DEFINE_RES_IRQ(gic_spi(197)),
+ DEFINE_RES_NAMED(gic_spi(200), 15, NULL, IORESOURCE_IRQ),
+
+ /*
+ * HI is not supported
+ * since IRQ has strange mapping
+ */
+};
+
+#define r8a7791_register_sys_dmac(id) \
+ platform_device_register_resndata( \
+ &platform_bus, "sh-dma-engine", 2 + id, \
+ &r8a7791_sys_dmac_resources[id * 3], 3, \
+ &r8a7791_sys_dmac_platform_data, \
+ sizeof(r8a7791_sys_dmac_platform_data))
+
+static void __init koelsch_add_dmac_prototype(void)
+{
+ r8a7791_register_sys_dmac(0);
+}
+
static void __init koelsch_add_du_device(void)
{
struct platform_device_info info = {
@@ -96,6 +188,7 @@ static void __init koelsch_add_standard_
{
shmobile_clk_workaround(clk_names, ARRAY_SIZE(clk_names), false);
r8a7791_add_dt_devices();
+ koelsch_add_dmac_prototype();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
koelsch_add_du_device();