Implement a sata driver for Synopsys DWC sata device based on U-boot driver model. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>master
parent
33a5e2c5e7
commit
02a4b42979
@ -0,0 +1,101 @@ |
||||
/*
|
||||
* DWC SATA platform driver |
||||
* |
||||
* (C) Copyright 2016 |
||||
* Texas Instruments Incorporated, <www.ti.com> |
||||
* |
||||
* Author: Mugunthan V N <mugunthanvnm@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> |
||||
#include <generic-phy.h> |
||||
|
||||
DECLARE_GLOBAL_DATA_PTR; |
||||
|
||||
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); |
||||
struct scsi_platdata *plat = dev_get_platdata(dev); |
||||
fdt_addr_t addr; |
||||
|
||||
plat->max_id = fdtdec_get_uint(gd->fdt_blob, dev->of_offset, "max-id", |
||||
CONFIG_SYS_SCSI_MAX_SCSI_ID); |
||||
plat->max_lun = fdtdec_get_uint(gd->fdt_blob, dev->of_offset, |
||||
"max-lun", CONFIG_SYS_SCSI_MAX_LUN); |
||||
|
||||
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; |
||||
struct phy phy; |
||||
|
||||
ret = generic_phy_get_by_name(dev, "sata-phy", &phy); |
||||
if (ret) { |
||||
error("can't get the phy from DT\n"); |
||||
return ret; |
||||
} |
||||
|
||||
ret = generic_phy_init(&phy); |
||||
if (ret) { |
||||
error("unable to initialize the sata phy\n"); |
||||
return ret; |
||||
} |
||||
|
||||
ret = generic_phy_power_on(&phy); |
||||
if (ret) { |
||||
error("unable to power on the sata phy\n"); |
||||
return 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); |
||||
} |
||||
|
||||
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, |
||||
}; |
Loading…
Reference in new issue