netdev - Re: [PATCH v4 2/2] netdev: driver: ethernet: Add TI CPSW driver

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Date:	Wed, 29 Feb 2012 14:15:10 +0100
From:	Peter Korsgaard <jacmet@...site.dk>
To:	Mugunthan V N <mugunthanvnm@...com>
Cc:	<netdev@...r.kernel.org>, <davem@...emloft.net>
Subject: Re: [PATCH v4 2/2] netdev: driver: ethernet: Add TI CPSW driver

>>>>> "M" == Mugunthan V N <mugunthanvnm@...com> writes:

Hi,

 M> This patch adds support for TI's CPSW driver.
 M> The three port switch gigabit ethernet subsystem provides ethernet packet
 M> communication and can be configured as an ethernet switch. Supports
 M> 10/100/1000 Mbps.

 M> Signed-off-by: Cyril Chemparathy <cyril@...com>
 M> Signed-off-by: Sriramakrishnan A G <srk@...com>
 M> Signed-off-by: Mugunthan V N <mugunthanvnm@...com>

 M> +++ b/include/linux/platform_data/cpsw.h
 M> @@ -0,0 +1,55 @@
 M> +/*
 M> + * Texas Instruments Ethernet Switch Driver
 M> + *
 M> + * Copyright (C) 2012 Texas Instruments
 M> + *
 M> + * This program is free software; you can redistribute it and/or
 M> + * modify it under the terms of the GNU General Public License as
 M> + * published by the Free Software Foundation version 2.
 M> + *
 M> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 M> + * kind, whether express or implied; without even the implied warranty
 M> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 M> + * GNU General Public License for more details.
 M> + */
 M> +#ifndef __CPSW_H__
 M> +#define __CPSW_H__
 M> +
 M> +#include <linux/if_ether.h>
 M> +
 M> +struct cpsw_slave_data {
 M> +	u32		slave_reg_ofs;
 M> +	u32		sliver_reg_ofs;
 M> +	const char	*phy_id;
 M> +	int		phy_if;
 M> +	u8		mac_addr[ETH_ALEN];
 M> +};
 M> +
 M> +struct cpsw_platform_data {
 M> +	u32	ss_reg_ofs;	/* Subsystem control register offset */
 M> +	u32	channels;	/* number of cpdma channels (symmetric) */
 M> +	u32	cpdma_reg_ofs;	/* cpdma register offset */
 M> +	u32	cpdma_sram_ofs;	/* cpdma sram offset */
 M> +
 M> +	u32	slaves;		/* number of slave cpgmac ports */
 M> +	struct cpsw_slave_data	*slave_data;
 M> +
 M> +	u32	ale_reg_ofs;	/* address lookup engine reg offset */
 M> +	u32	ale_entries;	/* ale table size */
 M> +
 M> +	u32	host_port_reg_ofs; /* cpsw cpdma host port registers */
 M> +	u32     host_port_num; /* The port number for the host port */
 M> +
 M> +	u32	hw_stats_reg_ofs;  /* cpsw hardware statistics counters */
 M> +
 M> +	u32	bd_ram_ofs;   /* embedded buffer descriptor RAM offset*/
 M> +	u32	bd_ram_size;  /*buffer descriptor ram size */
 M> +	u32	hw_ram_addr; /*if the HW address for BD RAM is different */
 M> +	bool	no_bd_ram; /* no embedded BD ram*/
 M> +
 M> +	u32	rx_descs;	/* Number of Rx Descriptios */
 M> +
 M> +	u32	mac_control;	/* Mac control register */
 M> +};

Is this really platform specific data (rather than SoC specific)? If
it's purely a difference between 335x and 814x just use an id_table with
different platform device names instead.

-- 
Bye, Peter Korsgaard
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