[deliverable/linux.git] / arch / arm / mach-omap2 / am35xx-emac.c

/*
 * Copyright (C) 2011 Ilya Yanok, Emcraft Systems
 *
 * Based on mach-omap2/board-am3517evm.c
 * Copyright (C) 2009 Texas Instruments Incorporated
 * Author: Ranjith Lohithakshan <ranjithl@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/err.h>
#include <linux/davinci_emac.h>
#include "omap_device.h"
#include "am35xx.h"
#include "control.h"
#include "am35xx-emac.h"

static void am35xx_enable_emac_int(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
}

static void am35xx_disable_emac_int(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
}

static struct emac_platform_data am35xx_emac_pdata = {
	.ctrl_reg_offset	= AM35XX_EMAC_CNTRL_OFFSET,
	.ctrl_mod_reg_offset	= AM35XX_EMAC_CNTRL_MOD_OFFSET,
	.ctrl_ram_offset	= AM35XX_EMAC_CNTRL_RAM_OFFSET,
	.ctrl_ram_size		= AM35XX_EMAC_CNTRL_RAM_SIZE,
	.hw_ram_addr		= AM35XX_EMAC_HW_RAM_ADDR,
	.version		= EMAC_VERSION_2,
	.interrupt_enable	= am35xx_enable_emac_int,
	.interrupt_disable	= am35xx_disable_emac_int,
};

static struct mdio_platform_data am35xx_mdio_pdata;

static int __init omap_davinci_emac_dev_init(struct omap_hwmod *oh,
		void *pdata, int pdata_len)
{
	struct platform_device *pdev;

	pdev = omap_device_build(oh->class->name, 0, oh, pdata, pdata_len);
	if (IS_ERR(pdev)) {
		WARN(1, "Can't build omap_device for %s:%s.\n",
		     oh->class->name, oh->name);
		return PTR_ERR(pdev);
	}

	return 0;
}

void __init am35xx_emac_init(unsigned long mdio_bus_freq, u8 rmii_en)
{
	struct omap_hwmod *oh;
	u32 v;
	int ret;

	oh = omap_hwmod_lookup("davinci_mdio");
	if (!oh) {
		pr_err("Could not find davinci_mdio hwmod\n");
		return;
	}

	am35xx_mdio_pdata.bus_freq = mdio_bus_freq;

	ret = omap_davinci_emac_dev_init(oh, &am35xx_mdio_pdata,
					 sizeof(am35xx_mdio_pdata));
	if (ret) {
		pr_err("Could not build davinci_mdio hwmod device\n");
		return;
	}

	oh = omap_hwmod_lookup("davinci_emac");
	if (!oh) {
		pr_err("Could not find davinci_emac hwmod\n");
		return;
	}

	am35xx_emac_pdata.rmii_en = rmii_en;

	ret = omap_davinci_emac_dev_init(oh, &am35xx_emac_pdata,
					 sizeof(am35xx_emac_pdata));
	if (ret) {
		pr_err("Could not build davinci_emac hwmod device\n");
		return;
	}

	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
	v &= ~AM35XX_CPGMACSS_SW_RST;
	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
}
Commit	Line	Data
a8195ba8 IY	1	/*
	2	* Copyright (C) 2011 Ilya Yanok, Emcraft Systems
	3	*
	4	* Based on mach-omap2/board-am3517evm.c
	5	* Copyright (C) 2009 Texas Instruments Incorporated
	6	* Author: Ranjith Lohithakshan <ranjithl@ti.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2
	10	* published by the Free Software Foundation.
	11	*
	12	* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
	13	* whether express or implied; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*/
	17
31ba8808	18	#include <linux/err.h>
a8195ba8	19	#include <linux/davinci_emac.h>
25c7d49e	20	#include "omap_device.h"
4f9ed545	21	#include "am35xx.h"
a8195ba8	22	#include "control.h"
31ba8808	23	#include "am35xx-emac.h"
a8195ba8 IY	24
	25	static void am35xx_enable_emac_int(void)
	26	{
eeb3711b PW	27	u32 v;
	28
	29	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	30	v \|= (AM35XX_CPGMAC_C0_RX_PULSE_CLR \| AM35XX_CPGMAC_C0_TX_PULSE_CLR \|
	31	AM35XX_CPGMAC_C0_MISC_PULSE_CLR \| AM35XX_CPGMAC_C0_RX_THRESH_CLR);
	32	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	33	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
a8195ba8 IY	34	}
	35
	36	static void am35xx_disable_emac_int(void)
	37	{
eeb3711b	38	u32 v;
a8195ba8	39
eeb3711b PW	40	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	41	v \|= (AM35XX_CPGMAC_C0_RX_PULSE_CLR \| AM35XX_CPGMAC_C0_TX_PULSE_CLR);
	42	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	43	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
a8195ba8 IY	44	}
	45
	46	static struct emac_platform_data am35xx_emac_pdata = {
	47	.ctrl_reg_offset = AM35XX_EMAC_CNTRL_OFFSET,
	48	.ctrl_mod_reg_offset = AM35XX_EMAC_CNTRL_MOD_OFFSET,
	49	.ctrl_ram_offset = AM35XX_EMAC_CNTRL_RAM_OFFSET,
	50	.ctrl_ram_size = AM35XX_EMAC_CNTRL_RAM_SIZE,
	51	.hw_ram_addr = AM35XX_EMAC_HW_RAM_ADDR,
	52	.version = EMAC_VERSION_2,
	53	.interrupt_enable = am35xx_enable_emac_int,
	54	.interrupt_disable = am35xx_disable_emac_int,
	55	};
	56
31ba8808	57	static struct mdio_platform_data am35xx_mdio_pdata;
a8195ba8	58
31ba8808 MG	59	static int __init omap_davinci_emac_dev_init(struct omap_hwmod *oh,
	60	void *pdata, int pdata_len)
	61	{
	62	struct platform_device *pdev;
	63
6efc3fe0	64	pdev = omap_device_build(oh->class->name, 0, oh, pdata, pdata_len);
31ba8808 MG	65	if (IS_ERR(pdev)) {
	66	WARN(1, "Can't build omap_device for %s:%s.\n",
	67	oh->class->name, oh->name);
	68	return PTR_ERR(pdev);
	69	}
	70
	71	return 0;
	72	}
a8195ba8 IY	73
	74	void __init am35xx_emac_init(unsigned long mdio_bus_freq, u8 rmii_en)
	75	{
31ba8808	76	struct omap_hwmod *oh;
eeb3711b	77	u32 v;
31ba8808	78	int ret;
a8195ba8	79
31ba8808 MG	80	oh = omap_hwmod_lookup("davinci_mdio");
	81	if (!oh) {
	82	pr_err("Could not find davinci_mdio hwmod\n");
	83	return;
	84	}
	85
	86	am35xx_mdio_pdata.bus_freq = mdio_bus_freq;
	87
	88	ret = omap_davinci_emac_dev_init(oh, &am35xx_mdio_pdata,
	89	sizeof(am35xx_mdio_pdata));
	90	if (ret) {
	91	pr_err("Could not build davinci_mdio hwmod device\n");
a8195ba8 IY	92	return;
	93	}
	94
31ba8808 MG	95	oh = omap_hwmod_lookup("davinci_emac");
	96	if (!oh) {
	97	pr_err("Could not find davinci_emac hwmod\n");
	98	return;
	99	}
	100
	101	am35xx_emac_pdata.rmii_en = rmii_en;
	102
	103	ret = omap_davinci_emac_dev_init(oh, &am35xx_emac_pdata,
	104	sizeof(am35xx_emac_pdata));
	105	if (ret) {
	106	pr_err("Could not build davinci_emac hwmod device\n");
a8195ba8 IY	107	return;
	108	}
	109
eeb3711b PW	110	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
	111	v &= ~AM35XX_CPGMACSS_SW_RST;
	112	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
	113	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
a8195ba8	114	}