Skip to contentSkip to conversation

ARM: shmobile: Koelsch SYS-DMAC and SDHI prototype V2

PATCH New Magnus Damm 1 participant 1 message Jun 10, 2014

Subsystems (4)
Arm (32-bit) Arm sub-architectures SuperH Arm/RISC-V/Renesas architecture
lore
Share & tools
lore

Magnus Damm

author maintainer
#0 lore raw

PATCH v2 1/1 ARM: shmobile: Koelsch SYS-DMAC and SDHI prototype V2

From: Magnus Damm <[email protected]>

Hook up SYS-DMAC prototype support for SDHI on Koelsch.

Local platform device version of SYS-DMAC and local slave IDs are used together with AUXDATA. CD and WP pins, regulators and clocks are provided via DT.

Only the DT reference case is covered. Not for upstream merge.

Updates patch 7 of the following series:
[PATCH 00/07] ARM: shmobile: Lager/Koelsch MMCIF/SDHI LPAE DMA prototype

Changes since V1:
- Initialize SYS_DMAC_SLAVE_SDHI0_TX to 64 to coexist with other DMACs. This is done to split the slave ID space and allow other DMACs to use the initial portion of the slave ID space. Without this fix other DMACs like for instance sound prototype support will not work with this prototype patch series and SDHI will be broken.

Signed-off-by Magnus Damm <[email protected]>

---

 arch/arm/mach-shmobile/board-koelsch-reference.c |   61 +++++++++++++++++++++-
 1 file changed, 60 insertions(+), 1 deletion(-)
arch/arm/mach-shmobile/board-koelsch-reference.c +60 -1
@@ -68,10 +68,19 @@ static const struct resource du_resource
 
 #include <linux/sh_dma.h>
 #include <mach/dma-register.h>
+#include <linux/mmc/host.h>
+#include <linux/mfd/tmio.h>
+#include <linux/mmc/sh_mobile_sdhi.h>
 
 /* Local DMA slave IDs */
 enum {
 	RCAR_DMA_SLAVE_KOELSCH_INVALID = 0,
+	SYS_DMAC_SLAVE_SDHI0_TX = 64,
+	SYS_DMAC_SLAVE_SDHI0_RX,
+	SYS_DMAC_SLAVE_SDHI1_TX,
+	SYS_DMAC_SLAVE_SDHI1_RX,
+	SYS_DMAC_SLAVE_SDHI2_TX,
+	SYS_DMAC_SLAVE_SDHI2_RX,
 };
 
 #define DMAE_CHANNEL(a, b)			\

@@ -97,6 +106,9 @@ enum {
 }
 
 static const struct sh_dmae_slave_config r8a7791_sys_dmac_slaves[] = {
+	SYS_DMAC_SLAVE(SDHI0, 16, 0xee100000, 0x60, 0x2060, 0xcd, 0xce),
+	SYS_DMAC_SLAVE(SDHI1, 16, 0xee140000, 0x30, 0x2030, 0xc1, 0xc2),
+	SYS_DMAC_SLAVE(SDHI2, 16, 0xee160000, 0x30, 0x2030, 0xd3, 0xd4),
 };
 
 static const struct sh_dmae_channel r8a7791_sys_dmac_channels[] = {

@@ -158,6 +170,52 @@ static void __init koelsch_add_dmac_prot
 	r8a7791_register_sys_dmac(0);
 }
 
+static struct sh_mobile_sdhi_info sdhi0_info __initdata = {
+	.dma_slave_tx   = SYS_DMAC_SLAVE_SDHI0_TX,
+	.dma_slave_rx   = SYS_DMAC_SLAVE_SDHI0_RX,
+	.dma_rx_offset  = 0x2000,
+
+	.tmio_caps	= MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |
+			  MMC_CAP_POWER_OFF_CARD,
+	.tmio_caps2	= MMC_CAP2_NO_MULTI_READ,
+	.tmio_flags	= TMIO_MMC_HAS_IDLE_WAIT |
+			  TMIO_MMC_WRPROTECT_DISABLE,
+};
+
+static struct sh_mobile_sdhi_info sdhi1_info __initdata = {
+	.dma_slave_tx   = SYS_DMAC_SLAVE_SDHI1_TX,
+	.dma_slave_rx   = SYS_DMAC_SLAVE_SDHI1_RX,
+	.dma_rx_offset  = 0x2000,
+
+	.tmio_caps	= MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |
+			  MMC_CAP_POWER_OFF_CARD,
+	.tmio_caps2	= MMC_CAP2_NO_MULTI_READ,
+	.tmio_flags	= TMIO_MMC_HAS_IDLE_WAIT |
+			  TMIO_MMC_WRPROTECT_DISABLE,
+};
+
+static struct sh_mobile_sdhi_info sdhi2_info __initdata = {
+	.dma_slave_tx   = SYS_DMAC_SLAVE_SDHI2_TX,
+	.dma_slave_rx   = SYS_DMAC_SLAVE_SDHI2_RX,
+	.dma_rx_offset  = 0x2000,
+
+	.tmio_caps	= MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |
+			  MMC_CAP_POWER_OFF_CARD,
+	.tmio_caps2	= MMC_CAP2_NO_MULTI_READ,
+	.tmio_flags	= TMIO_MMC_HAS_IDLE_WAIT |
+			  TMIO_MMC_WRPROTECT_DISABLE,
+};
+
+static struct of_dev_auxdata koelsch_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("renesas,sdhi-r8a7791", 0xee100000, "sdhi0",
+			&sdhi0_info),
+	OF_DEV_AUXDATA("renesas,sdhi-r8a7791", 0xee140000, "sdhi1",
+			&sdhi1_info),
+	OF_DEV_AUXDATA("renesas,sdhi-r8a7791", 0xee160000, "sdhi2",
+			&sdhi2_info),
+	{},
+};
+
 static void __init koelsch_add_du_device(void)
 {
 	struct platform_device_info info = {

@@ -189,7 +247,8 @@ 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);
+	of_platform_populate(NULL, of_default_bus_match_table,
+			     koelsch_auxdata_lookup, NULL);
 
 	koelsch_add_du_device();
 }