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fsl_pq_mdio: Add Suport for etsec2.0 devices.
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This patch adds mdio support for etsec2.0 devices.

Modified the fsl_pq_mdio structure to include the new mdio
members.

Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sandeep Gopalpet authored and David S. Miller committed Nov 3, 2009
1 parent fba4ed0 commit 1d2397d
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Showing 2 changed files with 57 additions and 13 deletions.
59 changes: 48 additions & 11 deletions drivers/net/fsl_pq_mdio.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,9 @@
* Provides Bus interface for MIIM regs
*
* Author: Andy Fleming <afleming@freescale.com>
* Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
*
* Copyright (c) 2002-2004,2008 Freescale Semiconductor, Inc.
* Copyright 2002-2004, 2008-2009 Freescale Semiconductor, Inc.
*
* Based on gianfar_mii.c and ucc_geth_mii.c (Li Yang, Kim Phillips)
*
Expand Down Expand Up @@ -189,19 +190,29 @@ static int fsl_pq_mdio_find_free(struct mii_bus *new_bus)


#if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs)
static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct device_node *np)
{
struct gfar __iomem *enet_regs;
u32 __iomem *ioremap_tbipa;
u64 addr, size;

/*
* This is mildly evil, but so is our hardware for doing this.
* Also, we have to cast back to struct gfar because of
* definition weirdness done in gianfar.h.
*/
enet_regs = (struct gfar __iomem *)
((char __iomem *)regs - offsetof(struct gfar, gfar_mii_regs));

return &enet_regs->tbipa;
if(of_device_is_compatible(np, "fsl,gianfar-mdio") ||
of_device_is_compatible(np, "fsl,gianfar-tbi") ||
of_device_is_compatible(np, "gianfar")) {
enet_regs = (struct gfar __iomem *)regs;
return &enet_regs->tbipa;
} else if (of_device_is_compatible(np, "fsl,etsec2-mdio") ||
of_device_is_compatible(np, "fsl,etsec2-tbi")) {
addr = of_translate_address(np, of_get_address(np, 1, &size, NULL));
ioremap_tbipa = ioremap(addr, size);
return ioremap_tbipa;
} else
return NULL;
}
#endif

Expand Down Expand Up @@ -250,11 +261,11 @@ static int fsl_pq_mdio_probe(struct of_device *ofdev,
{
struct device_node *np = ofdev->node;
struct device_node *tbi;
struct fsl_pq_mdio __iomem *regs;
struct fsl_pq_mdio __iomem *regs = NULL;
u32 __iomem *tbipa;
struct mii_bus *new_bus;
int tbiaddr = -1;
u64 addr, size;
u64 addr = 0, size = 0, ioremap_miimcfg = 0;
int err = 0;

new_bus = mdiobus_alloc();
Expand All @@ -268,8 +279,22 @@ static int fsl_pq_mdio_probe(struct of_device *ofdev,
fsl_pq_mdio_bus_name(new_bus->id, np);

/* Set the PHY base address */
addr = of_translate_address(np, of_get_address(np, 0, &size, NULL));
regs = ioremap(addr, size);
if (of_device_is_compatible(np,"fsl,gianfar-mdio") ||
of_device_is_compatible(np, "fsl,gianfar-tbi") ||
of_device_is_compatible(np, "fsl,ucc-mdio") ||
of_device_is_compatible(np,"ucc_geth_phy" )) {
addr = of_translate_address(np, of_get_address(np, 0, &size, NULL));
ioremap_miimcfg = container_of(addr, struct fsl_pq_mdio, miimcfg);
regs = ioremap(ioremap_miimcfg, size +
offsetof(struct fsl_pq_mdio, miimcfg));
} else if (of_device_is_compatible(np,"fsl,etsec2-mdio") ||
of_device_is_compatible(np, "fsl,etsec2-tbi")) {
addr = of_translate_address(np, of_get_address(np, 0, &size, NULL));
regs = ioremap(addr, size);
} else {
err = -EINVAL;
goto err_free_bus;
}

if (NULL == regs) {
err = -ENOMEM;
Expand All @@ -290,9 +315,15 @@ static int fsl_pq_mdio_probe(struct of_device *ofdev,

if (of_device_is_compatible(np, "fsl,gianfar-mdio") ||
of_device_is_compatible(np, "fsl,gianfar-tbi") ||
of_device_is_compatible(np, "fsl,etsec2-mdio") ||
of_device_is_compatible(np, "fsl,etsec2-tbi") ||
of_device_is_compatible(np, "gianfar")) {
#if defined(CONFIG_GIANFAR) || defined(CONFIG_GIANFAR_MODULE)
tbipa = get_gfar_tbipa(regs);
tbipa = get_gfar_tbipa(regs, np);
if (!tbipa) {
err = -EINVAL;
goto err_free_irqs;
}
#else
err = -ENODEV;
goto err_free_irqs;
Expand Down Expand Up @@ -405,6 +436,12 @@ static struct of_device_id fsl_pq_mdio_match[] = {
{
.compatible = "fsl,gianfar-mdio",
},
{
.compatible = "fsl,etsec2-tbi",
},
{
.compatible = "fsl,etsec2-mdio",
},
{},
};
MODULE_DEVICE_TABLE(of, fsl_pq_mdio_match);
Expand Down
11 changes: 9 additions & 2 deletions drivers/net/fsl_pq_mdio.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,9 @@
* Driver for the MDIO bus controller on Freescale PowerQUICC processors
*
* Author: Andy Fleming
* Modifier: Sandeep Gopalpet
*
* Copyright (c) 2002-2004,2008 Freescale Semiconductor, Inc.
* Copyright 2002-2004, 2008-2009 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
Expand All @@ -23,6 +24,12 @@
#define MII_READ_COMMAND 0x00000001

struct fsl_pq_mdio {
u8 res1[16];
u32 ieventm; /* MDIO Interrupt event register (for etsec2)*/
u32 imaskm; /* MDIO Interrupt mask register (for etsec2)*/
u8 res2[4];
u32 emapm; /* MDIO Event mapping register (for etsec2)*/
u8 res3[1280];
u32 miimcfg; /* MII management configuration reg */
u32 miimcom; /* MII management command reg */
u32 miimadd; /* MII management address reg */
Expand All @@ -31,9 +38,9 @@ struct fsl_pq_mdio {
u32 miimind; /* MII management indication reg */
u8 reserved[28]; /* Space holder */
u32 utbipar; /* TBI phy address reg (only on UCC) */
u8 res4[2728];
} __attribute__ ((packed));


int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum);
int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value);
int fsl_pq_local_mdio_write(struct fsl_pq_mdio __iomem *regs, int mii_id,
Expand Down

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