From a8195ba87cc746bf765bd507d87a2945602c8adc Mon Sep 17 00:00:00 2001 From: Ilya Yanok Date: Mon, 5 Mar 2012 11:08:36 -0800 Subject: ARM: OMAP: move generic EMAC init to separate file AM35xx SoCs include DaVinci EMAC IP. Initialization code in board-am3517evm.c is pretty board independent and will work for any AM35xx based board so move this code to it's own file to be reused by other boards. Signed-off-by: Ilya Yanok Signed-off-by: Igor Grinberg Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/Makefile | 3 + arch/arm/mach-omap2/am35xx-emac.c | 117 ++++++++++++++++++++++++++++++++++ arch/arm/mach-omap2/am35xx-emac.h | 15 +++++ arch/arm/mach-omap2/board-am3517evm.c | 117 +--------------------------------- 4 files changed, 137 insertions(+), 115 deletions(-) create mode 100644 arch/arm/mach-omap2/am35xx-emac.c create mode 100644 arch/arm/mach-omap2/am35xx-emac.h (limited to 'arch/arm') diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index bd76394ccaf8..8d6bcca653b5 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -270,4 +270,7 @@ smsc911x-$(CONFIG_SMSC911X) := gpmc-smsc911x.o obj-y += $(smsc911x-m) $(smsc911x-y) obj-$(CONFIG_ARCH_OMAP4) += hwspinlock.o +emac-$(CONFIG_TI_DAVINCI_EMAC) := am35xx-emac.o +obj-y += $(emac-m) $(emac-y) + obj-y += common-board-devices.o twl-common.o diff --git a/arch/arm/mach-omap2/am35xx-emac.c b/arch/arm/mach-omap2/am35xx-emac.c new file mode 100644 index 000000000000..1f97e7475206 --- /dev/null +++ b/arch/arm/mach-omap2/am35xx-emac.c @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2011 Ilya Yanok, Emcraft Systems + * + * Based on mach-omap2/board-am3517evm.c + * Copyright (C) 2009 Texas Instruments Incorporated + * Author: Ranjith Lohithakshan + * + * 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 +#include +#include +#include +#include + +#include "control.h" + +static struct mdio_platform_data am35xx_emac_mdio_pdata; + +static struct resource am35xx_emac_mdio_resources[] = { + DEFINE_RES_MEM(AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET, SZ_4K), +}; + +static struct platform_device am35xx_emac_mdio_device = { + .name = "davinci_mdio", + .id = 0, + .num_resources = ARRAY_SIZE(am35xx_emac_mdio_resources), + .resource = am35xx_emac_mdio_resources, + .dev.platform_data = &am35xx_emac_mdio_pdata, +}; + +static void am35xx_enable_emac_int(void) +{ + u32 regval; + + regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); + regval = (regval | 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(regval, AM35XX_CONTROL_LVL_INTR_CLEAR); + regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); +} + +static void am35xx_disable_emac_int(void) +{ + u32 regval; + + regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); + regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR | + AM35XX_CPGMAC_C0_TX_PULSE_CLR); + omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR); + regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); +} + +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 resource am35xx_emac_resources[] = { + DEFINE_RES_MEM(AM35XX_IPSS_EMAC_BASE, 0x30000), + DEFINE_RES_IRQ(INT_35XX_EMAC_C0_RXTHRESH_IRQ), + DEFINE_RES_IRQ(INT_35XX_EMAC_C0_RX_PULSE_IRQ), + DEFINE_RES_IRQ(INT_35XX_EMAC_C0_TX_PULSE_IRQ), + DEFINE_RES_IRQ(INT_35XX_EMAC_C0_MISC_PULSE_IRQ), +}; + +static struct platform_device am35xx_emac_device = { + .name = "davinci_emac", + .id = -1, + .num_resources = ARRAY_SIZE(am35xx_emac_resources), + .resource = am35xx_emac_resources, + .dev = { + .platform_data = &am35xx_emac_pdata, + }, +}; + +void __init am35xx_emac_init(unsigned long mdio_bus_freq, u8 rmii_en) +{ + unsigned int regval; + int err; + + am35xx_emac_pdata.rmii_en = rmii_en; + am35xx_emac_mdio_pdata.bus_freq = mdio_bus_freq; + err = platform_device_register(&am35xx_emac_device); + if (err) { + pr_err("AM35x: failed registering EMAC device: %d\n", err); + return; + } + + err = platform_device_register(&am35xx_emac_mdio_device); + if (err) { + pr_err("AM35x: failed registering EMAC MDIO device: %d\n", err); + platform_device_unregister(&am35xx_emac_device); + return; + } + + regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); + regval = regval & (~(AM35XX_CPGMACSS_SW_RST)); + omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET); + regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); +} diff --git a/arch/arm/mach-omap2/am35xx-emac.h b/arch/arm/mach-omap2/am35xx-emac.h new file mode 100644 index 000000000000..15c6f9ce59a2 --- /dev/null +++ b/arch/arm/mach-omap2/am35xx-emac.h @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2011 Ilya Yanok, Emcraft Systems + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define AM35XX_DEFAULT_MDIO_FREQUENCY 1000000 + +#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE) +void am35xx_emac_init(unsigned long mdio_bus_freq, u8 rmii_en); +#else +static inline void am35xx_emac_init(unsigned long mdio_bus_freq, u8 rmii_en) {} +#endif diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c index 4b1cfe32e6ba..005905b6ef2b 100644 --- a/arch/arm/mach-omap2/board-am3517evm.c +++ b/arch/arm/mach-omap2/board-am3517evm.c @@ -39,124 +39,11 @@ #include