[PATCH v2 1/2] ARM: shmobile: r8a7779: add HPB-DMAC support
Sergei Shtylyov
sergei.shtylyov at cogentembedded.com
Sun Aug 25 13:46:23 EDT 2013
From: Max Filippov <max.filippov at cogentembedded.com>
Add HPB-DMAC platform device on R8A7779 SoC along with its slave and channel
configurations (only for SDHI0 so far).
Signed-off-by: Max Filippov <max.filippov at cogentembedded.com>
[Sergei: moved *enum* declaring HPB-DMAC slave IDs from now removed <mach/dma.h>
to <mach/r8a7779.h>, removed #include <mach/dma.h> from setup-r8a7779.c, removed
SSI-related *enum* values and SSI-related data from hpb_dmae_slaves[] and
hpb_dmae_channels[], added ASYNCMDR.ASBTMD{20|24|43} and ASYNCMDR.ASMD{20|24|43}
fields/values, fixed comments to ASYNCMDR.ASBTMD2[123] and ASYNCMDR.ASMD2[123]
fields/values, renamed all the bit/field/value #define's to include 'HBP_DMAE_'
prefix to match the driver, moved comments after the element initializers of
hpb_dmae_channels[].]
Signed-off-by: Sergei Shtylyov <sergei.shtylyov at cogentembedded.com>
---
Changes in version 2:
- renamed all the bit/field/value #define's to include 'HBP_DMAE_' prefix to
match the driver;
- added #define's for MMC[01] related fields of the ASYNCMDR register.
arch/arm/mach-shmobile/include/mach/r8a7779.h | 7 +
arch/arm/mach-shmobile/setup-r8a7779.c | 154 ++++++++++++++++++++++++++
2 files changed, 161 insertions(+)
Index: renesas/arch/arm/mach-shmobile/include/mach/r8a7779.h
===================================================================
--- renesas.orig/arch/arm/mach-shmobile/include/mach/r8a7779.h
+++ renesas/arch/arm/mach-shmobile/include/mach/r8a7779.h
@@ -5,6 +5,13 @@
#include <linux/pm_domain.h>
#include <linux/sh_eth.h>
+/* HPB-DMA slave IDs */
+enum {
+ HPBDMA_SLAVE_DUMMY,
+ HPBDMA_SLAVE_SDHI0_TX,
+ HPBDMA_SLAVE_SDHI0_RX,
+};
+
struct platform_device;
struct r8a7779_pm_ch {
Index: renesas/arch/arm/mach-shmobile/setup-r8a7779.c
===================================================================
--- renesas.orig/arch/arm/mach-shmobile/setup-r8a7779.c
+++ renesas/arch/arm/mach-shmobile/setup-r8a7779.c
@@ -25,6 +25,7 @@
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/of_platform.h>
+#include <linux/platform_data/dma-rcar-hpbdma.h>
#include <linux/platform_data/gpio-rcar.h>
#include <linux/platform_data/irq-renesas-intc-irqpin.h>
#include <linux/platform_device.h>
@@ -605,6 +606,158 @@ static struct resource ether_resources[]
},
};
+/* HPB-DMA */
+
+/* Asynchronous mode register bits */
+#define HPB_DMAE_ASYNCMDR_ASMD43_MASK BIT(23) /* MMC1 */
+#define HPB_DMAE_ASYNCMDR_ASMD43_SINGLE BIT(23) /* MMC1 */
+#define HPB_DMAE_ASYNCMDR_ASMD43_MULTI 0 /* MMC1 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD43_MASK BIT(22) /* MMC1 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD43_BURST BIT(22) /* MMC1 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD43_NBURST 0 /* MMC1 */
+#define HPB_DMAE_ASYNCMDR_ASMD24_MASK BIT(21) /* MMC0 */
+#define HPB_DMAE_ASYNCMDR_ASMD24_SINGLE BIT(21) /* MMC0 */
+#define HPB_DMAE_ASYNCMDR_ASMD24_MULTI 0 /* MMC0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD24_MASK BIT(20) /* MMC0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD24_BURST BIT(20) /* MMC0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD24_NBURST 0 /* MMC0 */
+#define HPB_DMAE_ASYNCMDR_ASMD41_MASK BIT(19) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD41_SINGLE BIT(19) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD41_MULTI 0 /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD41_MASK BIT(18) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD41_BURST BIT(18) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD41_NBURST 0 /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD40_MASK BIT(17) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD40_SINGLE BIT(17) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD40_MULTI 0 /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD40_MASK BIT(16) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD40_BURST BIT(16) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD40_NBURST 0 /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD39_MASK BIT(15) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD39_SINGLE BIT(15) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD39_MULTI 0 /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD39_MASK BIT(14) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD39_BURST BIT(14) /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD39_NBURST 0 /* SDHI3 */
+#define HPB_DMAE_ASYNCMDR_ASMD27_MASK BIT(13) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD27_SINGLE BIT(13) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD27_MULTI 0 /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD27_MASK BIT(12) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD27_BURST BIT(12) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD27_NBURST 0 /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD26_MASK BIT(11) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD26_SINGLE BIT(11) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD26_MULTI 0 /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD26_MASK BIT(10) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD26_BURST BIT(10) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD26_NBURST 0 /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD25_MASK BIT(9) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD25_SINGLE BIT(9) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD25_MULTI 0 /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD25_MASK BIT(8) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD25_BURST BIT(8) /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD25_NBURST 0 /* SDHI2 */
+#define HPB_DMAE_ASYNCMDR_ASMD23_MASK BIT(7) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD23_SINGLE BIT(7) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD23_MULTI 0 /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD23_MASK BIT(6) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD23_BURST BIT(6) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD23_NBURST 0 /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD22_MASK BIT(5) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD22_SINGLE BIT(5) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD22_MULTI 0 /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD22_MASK BIT(4) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD22_BURST BIT(4) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD22_NBURST 0 /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD21_MASK BIT(3) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD21_SINGLE BIT(3) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD21_MULTI 0 /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD21_MASK BIT(2) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD21_BURST BIT(2) /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD21_NBURST 0 /* SDHI0 */
+#define HPB_DMAE_ASYNCMDR_ASMD20_MASK BIT(1) /* SDHI1 */
+#define HPB_DMAE_ASYNCMDR_ASMD20_SINGLE BIT(1) /* SDHI1 */
+#define HPB_DMAE_ASYNCMDR_ASMD20_MULTI 0 /* SDHI1 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD20_MASK BIT(0) /* SDHI1 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD20_BURST BIT(0) /* SDHI1 */
+#define HPB_DMAE_ASYNCMDR_ASBTMD20_NBURST 0 /* SDHI1 */
+
+static const struct hpb_dmae_slave_config hpb_dmae_slaves[] = {
+ {
+ .id = HPBDMA_SLAVE_SDHI0_TX,
+ .addr = 0xffe4c000 + 0x30,
+ .dcr = HPB_DMAE_DCR_SPDS_16BIT |
+ HPB_DMAE_DCR_DMDL |
+ HPB_DMAE_DCR_DPDS_16BIT,
+ .rstr = HPB_DMAE_ASYNCRSTR_ASRST21 |
+ HPB_DMAE_ASYNCRSTR_ASRST22 |
+ HPB_DMAE_ASYNCRSTR_ASRST23,
+ .mdr = HPB_DMAE_ASYNCMDR_ASMD21_SINGLE |
+ HPB_DMAE_ASYNCMDR_ASBTMD21_NBURST,
+ .mdm = HPB_DMAE_ASYNCMDR_ASMD21_MASK |
+ HPB_DMAE_ASYNCMDR_ASBTMD21_MASK,
+ .port = 0x0D0C,
+ .flags = HPB_DMAE_SET_ASYNC_RESET | HPB_DMAE_SET_ASYNC_MODE,
+ .dma_ch = 21,
+ }, {
+ .id = HPBDMA_SLAVE_SDHI0_RX,
+ .addr = 0xffe4c000 + 0x30,
+ .dcr = HPB_DMAE_DCR_SMDL |
+ HPB_DMAE_DCR_SPDS_16BIT |
+ HPB_DMAE_DCR_DPDS_16BIT,
+ .rstr = HPB_DMAE_ASYNCRSTR_ASRST21 |
+ HPB_DMAE_ASYNCRSTR_ASRST22 |
+ HPB_DMAE_ASYNCRSTR_ASRST23,
+ .mdr = HPB_DMAE_ASYNCMDR_ASMD22_SINGLE |
+ HPB_DMAE_ASYNCMDR_ASBTMD22_NBURST,
+ .mdm = HPB_DMAE_ASYNCMDR_ASMD22_MASK |
+ HPB_DMAE_ASYNCMDR_ASBTMD22_MASK,
+ .port = 0x0D0C,
+ .flags = HPB_DMAE_SET_ASYNC_RESET | HPB_DMAE_SET_ASYNC_MODE,
+ .dma_ch = 22,
+ },
+};
+
+static const struct hpb_dmae_channel hpb_dmae_channels[] = {
+ HPB_DMAE_CHANNEL(0x93, HPBDMA_SLAVE_SDHI0_TX), /* ch. 21 */
+ HPB_DMAE_CHANNEL(0x93, HPBDMA_SLAVE_SDHI0_RX), /* ch. 22 */
+};
+
+static struct hpb_dmae_pdata dma_platform_data __initdata = {
+ .slaves = hpb_dmae_slaves,
+ .num_slaves = ARRAY_SIZE(hpb_dmae_slaves),
+ .channels = hpb_dmae_channels,
+ .num_channels = ARRAY_SIZE(hpb_dmae_channels),
+ .ts_shift = {
+ [XMIT_SZ_8BIT] = 0,
+ [XMIT_SZ_16BIT] = 1,
+ [XMIT_SZ_32BIT] = 2,
+ },
+ .num_hw_channels = 44,
+};
+
+static struct resource hpb_dmae_resources[] __initdata = {
+ /* Channel registers */
+ DEFINE_RES_MEM(0xffc08000, 0x1000),
+ /* Common registers */
+ DEFINE_RES_MEM(0xffc09000, 0x170),
+ /* Asynchronous reset registers */
+ DEFINE_RES_MEM(0xffc00300, 4),
+ /* Asynchronous mode registers */
+ DEFINE_RES_MEM(0xffc00400, 4),
+ /* IRQ for DMA channels */
+ DEFINE_RES_NAMED(gic_iid(0x8e), 12, NULL, IORESOURCE_IRQ),
+};
+
+static void __init r8a7779_register_hpb_dmae(void)
+{
+ platform_device_register_resndata(&platform_bus, "hpb-dma-engine", -1,
+ hpb_dmae_resources,
+ ARRAY_SIZE(hpb_dmae_resources),
+ &dma_platform_data,
+ sizeof(dma_platform_data));
+}
+
static struct platform_device *r8a7779_devices_dt[] __initdata = {
&scif0_device,
&scif1_device,
@@ -638,6 +791,7 @@ void __init r8a7779_add_standard_devices
ARRAY_SIZE(r8a7779_devices_dt));
platform_add_devices(r8a7779_standard_devices,
ARRAY_SIZE(r8a7779_standard_devices));
+ r8a7779_register_hpb_dmae();
}
void __init r8a7779_add_ether_device(struct sh_eth_plat_data *pdata)
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