From: Ilya Yanok <yanok@xxxxxxxxxxx> 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 <yanok@xxxxxxxxxxx> Signed-off-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx> --- v3: - use DEFINE_RES_* macros - check error of platform_device_register() - introduce a default MDIO bus frequency define Tony, this patch has been floating for about two months: http://www.spinics.net/lists/linux-omap/msg62160.html can it be applied for 3.4? Thanks 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 diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 56a6e98..64f79da 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -267,4 +267,7 @@ 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 0000000..1f97e74 --- /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 <ranjithl@xxxxxx> + * + * 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/clk.h> +#include <linux/davinci_emac.h> +#include <linux/platform_device.h> +#include <plat/irqs.h> +#include <mach/am35xx.h> + +#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 0000000..15c6f9c --- /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 71138a1..3645285 100644 --- a/arch/arm/mach-omap2/board-am3517evm.c +++ b/arch/arm/mach-omap2/board-am3517evm.c @@ -39,124 +39,11 @@ #include <video/omap-panel-generic-dpi.h> #include <video/omap-panel-dvi.h> +#include "am35xx-emac.h" #include "mux.h" #include "control.h" #include "hsmmc.h" -#define AM35XX_EVM_MDIO_FREQUENCY (1000000) - -static struct mdio_platform_data am3517_evm_mdio_pdata = { - .bus_freq = AM35XX_EVM_MDIO_FREQUENCY, -}; - -static struct resource am3517_mdio_resources[] = { - { - .start = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET, - .end = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET + - SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, -}; - -static struct platform_device am3517_mdio_device = { - .name = "davinci_mdio", - .id = 0, - .num_resources = ARRAY_SIZE(am3517_mdio_resources), - .resource = am3517_mdio_resources, - .dev.platform_data = &am3517_evm_mdio_pdata, -}; - -static struct emac_platform_data am3517_evm_emac_pdata = { - .rmii_en = 1, -}; - -static struct resource am3517_emac_resources[] = { - { - .start = AM35XX_IPSS_EMAC_BASE, - .end = AM35XX_IPSS_EMAC_BASE + 0x2FFFF, - .flags = IORESOURCE_MEM, - }, - { - .start = INT_35XX_EMAC_C0_RXTHRESH_IRQ, - .end = INT_35XX_EMAC_C0_RXTHRESH_IRQ, - .flags = IORESOURCE_IRQ, - }, - { - .start = INT_35XX_EMAC_C0_RX_PULSE_IRQ, - .end = INT_35XX_EMAC_C0_RX_PULSE_IRQ, - .flags = IORESOURCE_IRQ, - }, - { - .start = INT_35XX_EMAC_C0_TX_PULSE_IRQ, - .end = INT_35XX_EMAC_C0_TX_PULSE_IRQ, - .flags = IORESOURCE_IRQ, - }, - { - .start = INT_35XX_EMAC_C0_MISC_PULSE_IRQ, - .end = INT_35XX_EMAC_C0_MISC_PULSE_IRQ, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct platform_device am3517_emac_device = { - .name = "davinci_emac", - .id = -1, - .num_resources = ARRAY_SIZE(am3517_emac_resources), - .resource = am3517_emac_resources, -}; - -static void am3517_enable_ethernet_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 am3517_disable_ethernet_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 void am3517_evm_ethernet_init(struct emac_platform_data *pdata) -{ - unsigned int regval; - - pdata->ctrl_reg_offset = AM35XX_EMAC_CNTRL_OFFSET; - pdata->ctrl_mod_reg_offset = AM35XX_EMAC_CNTRL_MOD_OFFSET; - pdata->ctrl_ram_offset = AM35XX_EMAC_CNTRL_RAM_OFFSET; - pdata->ctrl_ram_size = AM35XX_EMAC_CNTRL_RAM_SIZE; - pdata->version = EMAC_VERSION_2; - pdata->hw_ram_addr = AM35XX_EMAC_HW_RAM_ADDR; - pdata->interrupt_enable = am3517_enable_ethernet_int; - pdata->interrupt_disable = am3517_disable_ethernet_int; - am3517_emac_device.dev.platform_data = pdata; - platform_device_register(&am3517_emac_device); - platform_device_register(&am3517_mdio_device); - clk_add_alias(NULL, dev_name(&am3517_mdio_device.dev), - NULL, &am3517_emac_device.dev); - - 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); - - return ; -} - - - #define LCD_PANEL_PWR 176 #define LCD_PANEL_BKLIGHT_PWR 182 #define LCD_PANEL_PWM 181 @@ -498,7 +385,7 @@ static void __init am3517_evm_init(void) i2c_register_board_info(1, am3517evm_i2c1_boardinfo, ARRAY_SIZE(am3517evm_i2c1_boardinfo)); /*Ethernet*/ - am3517_evm_ethernet_init(&am3517_evm_emac_pdata); + am35xx_emac_init(AM35XX_DEFAULT_MDIO_FREQUENCY, 1); /* MUSB */ am3517_evm_musb_init(); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
