From: Mugunthan V N <mugunthan...@ti.com>
Implement a sata driver for Synopsys DWC sata device based on
U-boot driver model.
Signed-off-by: Mugunthan V N <mugunthan...@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhib...@ti.com>
---
drivers/block/Kconfig | 9 ++++++
drivers/block/Makefile | 1 +
drivers/block/dwc_ahci.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 89 insertions(+)
create mode 100644 drivers/block/dwc_ahci.c
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 88e66e2..0aecb6b 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -48,4 +48,13 @@ config SATA_CEVA
ZynqMP. Support up to 2 external devices. Complient with SATA 3.1 and
AHCI 1.3 specifications with hot-plug detect feature.
+
+config DWC_AHCI
+ bool "Enable Synopsys DWC AHCI driver support"
+ select SCSI_AHCI
+ depends on DM_SCSI
+ help
+ Enable this driver to support Sata devices through
+ Synopsys DWC AHCI module.
+
endmenu
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index a72feec..cffe498 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -11,6 +11,7 @@ ifndef CONFIG_BLK
obj-y += blk_legacy.o
endif
+obj-$(CONFIG_DWC_AHCI) += dwc_ahci.o
obj-$(CONFIG_AHCI) += ahci-uclass.o
obj-$(CONFIG_DM_SCSI) += scsi-uclass.o
obj-$(CONFIG_SCSI_AHCI) += ahci.o
diff --git a/drivers/block/dwc_ahci.c b/drivers/block/dwc_ahci.c
new file mode 100644
index 0000000..939e57d
--- /dev/null
+++ b/drivers/block/dwc_ahci.c
@@ -0,0 +1,79 @@
+/*
+ * DWC SATA platform driver
+ *
+ * (C) Copyright 2016
+ * Texas Instruments Incorporated, <www.ti.com>
+ *
+ * Author: Mugunthan V N <mugunthan...@ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ahci.h>
+#include <scsi.h>
+#include <sata.h>
+#include <asm/arch/sata.h>
+#include <asm/io.h>
+
+struct dwc_ahci_priv {
+ void *base;
+ void *wrapper_base;
+};
+
+static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
+{
+ struct dwc_ahci_priv *priv = dev_get_priv(dev);
+ fdt_addr_t addr;
+
+ priv->base = map_physmem(dev_get_addr(dev), sizeof(void *),
+ MAP_NOCACHE);
+
+ addr = dev_get_addr_index(dev, 1);
+ if (addr != FDT_ADDR_T_NONE) {
+ priv->wrapper_base = map_physmem(addr, sizeof(void *),
+ MAP_NOCACHE);
+ } else {
+ priv->wrapper_base = NULL;
+ }
+
+ return 0;
+}
+
+static int dwc_ahci_probe(struct udevice *dev)
+{
+ struct dwc_ahci_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ if (priv->wrapper_base) {
+ u32 val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO;
+
+ /* Enable SATA module, No Idle, No Standby */
+ writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG);
+ }
+
+ ret = enable_sata_phy();
+ if (ret) {
+ error("Sata phy enable failed\n");
+ return ret;
+ }
+
+ return ahci_init(priv->base);
+}
+
+static const struct udevice_id dwc_ahci_ids[] = {
+ { .compatible = "snps,dwc-ahci" },
+ { }
+};
+
+U_BOOT_DRIVER(dwc_ahci) = {
+ .name = "dwc_ahci",
+ .id = UCLASS_SCSI,
+ .of_match = dwc_ahci_ids,
+ .ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
+ .probe = dwc_ahci_probe,
+ .priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
+ .platdata_auto_alloc_size = sizeof(struct scsi_platdata),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
--
1.9.1
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