700691f27e
There are two instances of MMC/SD on da850/omap-l138. Connector for the first instance is available on the EVM. This patch adds support for this instance. This patch also adds support for card detect and write protect switches on da850/omap-l138 EVM. Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
242 lines
6.1 KiB
C
242 lines
6.1 KiB
C
/*
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* TI DA850/OMAP-L138 EVM board
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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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* Derived from: arch/arm/mach-davinci/board-da830-evm.c
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* Original Copyrights follow:
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*
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* 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/i2c.h>
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#include <linux/i2c/at24.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/common.h>
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#include <mach/irqs.h>
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#include <mach/cp_intc.h>
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#include <mach/da8xx.h>
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#define DA850_EVM_PHY_MASK 0x1
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#define DA850_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */
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#define DA850_LCD_BL_PIN GPIO_TO_PIN(2, 15)
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#define DA850_LCD_PWR_PIN GPIO_TO_PIN(8, 10)
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#define DA850_MMCSD_CD_PIN GPIO_TO_PIN(4, 0)
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#define DA850_MMCSD_WP_PIN GPIO_TO_PIN(4, 1)
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static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = {
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.bus_freq = 100, /* kHz */
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.bus_delay = 0, /* usec */
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};
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static struct davinci_uart_config da850_evm_uart_config __initdata = {
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.enabled_uarts = 0x7,
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};
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/* davinci da850 evm audio machine driver */
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static u8 da850_iis_serializer_direction[] = {
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INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE,
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INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE,
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INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, TX_MODE,
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RX_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE,
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};
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static struct snd_platform_data da850_evm_snd_data = {
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.tx_dma_offset = 0x2000,
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.rx_dma_offset = 0x2000,
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.op_mode = DAVINCI_MCASP_IIS_MODE,
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.num_serializer = ARRAY_SIZE(da850_iis_serializer_direction),
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.tdm_slots = 2,
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.serial_dir = da850_iis_serializer_direction,
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.eventq_no = EVENTQ_1,
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.version = MCASP_VERSION_2,
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.txnumevt = 1,
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.rxnumevt = 1,
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};
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static int da850_evm_mmc_get_ro(int index)
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{
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return gpio_get_value(DA850_MMCSD_WP_PIN);
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}
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static int da850_evm_mmc_get_cd(int index)
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{
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return !gpio_get_value(DA850_MMCSD_CD_PIN);
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}
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static struct davinci_mmc_config da850_mmc_config = {
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.get_ro = da850_evm_mmc_get_ro,
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.get_cd = da850_evm_mmc_get_cd,
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.wires = 4,
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.version = MMC_CTLR_VERSION_2,
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};
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static int da850_lcd_hw_init(void)
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{
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int status;
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status = gpio_request(DA850_LCD_BL_PIN, "lcd bl\n");
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if (status < 0)
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return status;
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status = gpio_request(DA850_LCD_PWR_PIN, "lcd pwr\n");
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if (status < 0) {
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gpio_free(DA850_LCD_BL_PIN);
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return status;
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}
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gpio_direction_output(DA850_LCD_BL_PIN, 0);
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gpio_direction_output(DA850_LCD_PWR_PIN, 0);
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/* disable lcd backlight */
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gpio_set_value(DA850_LCD_BL_PIN, 0);
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/* disable lcd power */
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gpio_set_value(DA850_LCD_PWR_PIN, 0);
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/* enable lcd power */
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gpio_set_value(DA850_LCD_PWR_PIN, 1);
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/* enable lcd backlight */
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gpio_set_value(DA850_LCD_BL_PIN, 1);
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return 0;
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}
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static __init void da850_evm_init(void)
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{
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struct davinci_soc_info *soc_info = &davinci_soc_info;
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int ret;
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ret = da8xx_register_edma();
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if (ret)
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pr_warning("da850_evm_init: edma registration failed: %d\n",
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ret);
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ret = da8xx_pinmux_setup(da850_i2c0_pins);
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if (ret)
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pr_warning("da850_evm_init: i2c0 mux setup failed: %d\n",
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ret);
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ret = da8xx_register_i2c(0, &da850_evm_i2c_0_pdata);
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if (ret)
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pr_warning("da850_evm_init: i2c0 registration failed: %d\n",
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ret);
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soc_info->emac_pdata->phy_mask = DA850_EVM_PHY_MASK;
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soc_info->emac_pdata->mdio_max_freq = DA850_EVM_MDIO_FREQUENCY;
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soc_info->emac_pdata->rmii_en = 0;
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ret = da8xx_pinmux_setup(da850_cpgmac_pins);
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if (ret)
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pr_warning("da850_evm_init: cpgmac mux setup failed: %d\n",
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ret);
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ret = da8xx_register_emac();
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if (ret)
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pr_warning("da850_evm_init: emac registration failed: %d\n",
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ret);
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ret = da8xx_register_watchdog();
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if (ret)
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pr_warning("da830_evm_init: watchdog registration failed: %d\n",
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ret);
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ret = da8xx_pinmux_setup(da850_mmcsd0_pins);
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if (ret)
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pr_warning("da850_evm_init: mmcsd0 mux setup failed: %d\n",
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ret);
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ret = gpio_request(DA850_MMCSD_CD_PIN, "MMC CD\n");
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if (ret)
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pr_warning("da850_evm_init: can not open GPIO %d\n",
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DA850_MMCSD_CD_PIN);
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gpio_direction_input(DA850_MMCSD_CD_PIN);
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ret = gpio_request(DA850_MMCSD_WP_PIN, "MMC WP\n");
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if (ret)
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pr_warning("da850_evm_init: can not open GPIO %d\n",
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DA850_MMCSD_WP_PIN);
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gpio_direction_input(DA850_MMCSD_WP_PIN);
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ret = da8xx_register_mmcsd0(&da850_mmc_config);
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if (ret)
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pr_warning("da850_evm_init: mmcsd0 registration failed: %d\n",
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ret);
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davinci_serial_init(&da850_evm_uart_config);
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/*
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* shut down uart 0 and 1; they are not used on the board and
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* accessing them causes endless "too much work in irq53" messages
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* with arago fs
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*/
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__raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);
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__raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);
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ret = da8xx_pinmux_setup(da850_mcasp_pins);
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if (ret)
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pr_warning("da850_evm_init: mcasp mux setup failed: %d\n",
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ret);
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da8xx_init_mcasp(0, &da850_evm_snd_data);
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ret = da8xx_pinmux_setup(da850_lcdcntl_pins);
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if (ret)
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pr_warning("da850_evm_init: lcdcntl mux setup failed: %d\n",
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ret);
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ret = da850_lcd_hw_init();
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if (ret)
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pr_warning("da850_evm_init: lcd initialization failed: %d\n",
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ret);
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ret = da8xx_register_lcdc();
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if (ret)
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pr_warning("da850_evm_init: lcdc 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 da850_evm_console_init(void)
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{
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return add_preferred_console("ttyS", 2, "115200");
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}
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console_initcall(da850_evm_console_init);
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#endif
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static __init void da850_evm_irq_init(void)
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{
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struct davinci_soc_info *soc_info = &davinci_soc_info;
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cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA850_N_CP_INTC_IRQ,
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soc_info->intc_irq_prios);
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}
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static void __init da850_evm_map_io(void)
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{
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da850_init();
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}
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MACHINE_START(DAVINCI_DA850_EVM, "DaVinci DA850/OMAP-L138 EVM")
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.phys_io = IO_PHYS,
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.io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
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.boot_params = (DA8XX_DDR_BASE + 0x100),
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.map_io = da850_evm_map_io,
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.init_irq = da850_evm_irq_init,
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.timer = &davinci_timer,
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.init_machine = da850_evm_init,
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MACHINE_END
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