forked from Minki/linux
5f72f38009
This patch adds EDMA support for the Hawkboard-L138 system Signed-off-by: Victor Rodriguez <vm.rod25@gmail.com> Tested-by: Rene Gonzalez <renegs.2378@gmail.com> Acked-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
160 lines
3.6 KiB
C
160 lines
3.6 KiB
C
/*
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* Hawkboard.org based on TI's OMAP-L138 Platform
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*
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* Initial code: Syed Mohammed Khasim
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*
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* Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of
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* any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/cp_intc.h>
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#include <mach/da8xx.h>
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#include <mach/mux.h>
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#define HAWKBOARD_PHY_ID "0:07"
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static short omapl138_hawk_mii_pins[] __initdata = {
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DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
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DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
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DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
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DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
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DA850_MDIO_D,
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-1
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};
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static __init void omapl138_hawk_config_emac(void)
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{
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void __iomem *cfgchip3 = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
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int ret;
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u32 val;
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struct davinci_soc_info *soc_info = &davinci_soc_info;
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val = __raw_readl(cfgchip3);
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val &= ~BIT(8);
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ret = davinci_cfg_reg_list(omapl138_hawk_mii_pins);
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if (ret) {
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pr_warning("%s: cpgmac/mii mux setup failed: %d\n",
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__func__, ret);
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return;
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}
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/* configure the CFGCHIP3 register for MII */
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__raw_writel(val, cfgchip3);
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pr_info("EMAC: MII PHY configured\n");
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soc_info->emac_pdata->phy_id = HAWKBOARD_PHY_ID;
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ret = da8xx_register_emac();
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if (ret)
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pr_warning("%s: emac registration failed: %d\n",
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__func__, ret);
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}
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/*
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* The following EDMA channels/slots are not being used by drivers (for
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* example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
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* hence they are being reserved for codecs on the DSP side.
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*/
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static const s16 da850_dma0_rsv_chans[][2] = {
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/* (offset, number) */
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{ 8, 6},
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{24, 4},
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{30, 2},
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{-1, -1}
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};
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static const s16 da850_dma0_rsv_slots[][2] = {
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/* (offset, number) */
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{ 8, 6},
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{24, 4},
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{30, 50},
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{-1, -1}
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};
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static const s16 da850_dma1_rsv_chans[][2] = {
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/* (offset, number) */
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{ 0, 28},
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{30, 2},
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{-1, -1}
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};
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static const s16 da850_dma1_rsv_slots[][2] = {
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/* (offset, number) */
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{ 0, 28},
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{30, 90},
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{-1, -1}
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};
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static struct edma_rsv_info da850_edma_cc0_rsv = {
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.rsv_chans = da850_dma0_rsv_chans,
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.rsv_slots = da850_dma0_rsv_slots,
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};
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static struct edma_rsv_info da850_edma_cc1_rsv = {
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.rsv_chans = da850_dma1_rsv_chans,
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.rsv_slots = da850_dma1_rsv_slots,
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};
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static struct edma_rsv_info *da850_edma_rsv[2] = {
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&da850_edma_cc0_rsv,
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&da850_edma_cc1_rsv,
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};
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static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
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.enabled_uarts = 0x7,
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};
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static __init void omapl138_hawk_init(void)
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{
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int ret;
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davinci_serial_init(&omapl138_hawk_uart_config);
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omapl138_hawk_config_emac();
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ret = da850_register_edma(da850_edma_rsv);
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if (ret)
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pr_warning("%s: EDMA registration failed: %d\n",
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__func__, ret);
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ret = da8xx_register_watchdog();
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if (ret)
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pr_warning("omapl138_hawk_init: "
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"watchdog registration failed: %d\n",
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ret);
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}
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#ifdef CONFIG_SERIAL_8250_CONSOLE
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static int __init omapl138_hawk_console_init(void)
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{
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if (!machine_is_omapl138_hawkboard())
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return 0;
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return add_preferred_console("ttyS", 2, "115200");
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}
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console_initcall(omapl138_hawk_console_init);
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#endif
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static void __init omapl138_hawk_map_io(void)
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{
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da850_init();
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}
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MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
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.boot_params = (DA8XX_DDR_BASE + 0x100),
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.map_io = omapl138_hawk_map_io,
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.init_irq = cp_intc_init,
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.timer = &davinci_timer,
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.init_machine = omapl138_hawk_init,
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MACHINE_END
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