[PATCH 07/10] ARM: LPC32XX: Phytec PHY3250 platform support file
Kevin Wells
wellsk40 at gmail.com
Tue Jan 26 19:20:20 EST 2010
Phytec PHY3250 platform support file
Signed-off-by: Kevin Wells <kevin.wells at nxp.com>
---
arch/arm/mach-lpc32xx/phy3250.c | 424
+++++++++++++++++++++++++++++++++++++++
1 files changed, 424 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-lpc32xx/phy3250.c
b/arch/arm/mach-lpc32xx/phy3250.c
new file mode 100644
index 0000000..aa29aa6
--- /dev/null
+++ b/arch/arm/mach-lpc32xx/phy3250.c
@@ -0,0 +1,424 @@
+/*
+ * arch/arm/mach-lpc32xx/phy3250.c
+ *
+ * Author: Kevin Wells <kevin.wells at nxp.com>
+ *
+ * Copyright (C) 2010 NXP Semiconductors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/sysdev.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/dma-mapping.h>
+#include <linux/device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/eeprom.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/clcd.h>
+#include <linux/amba/pl022.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <mach/hardware.h>
+#include <mach/platform.h>
+#include <mach/board.h>
+#include "common.h"
+#include "pm.h"
+
+/*
+ * Mapped GPIOLIB GPIOs
+ */
+#define SPI0_CS_GPIO LPC32XX_GPIO(GPIO_P3_GRP, 5)
+#define LCD_POWER_GPIO LPC32XX_GPIO(GPO_P3_GRP, 0)
+#define BKL_POWER_GPIO LPC32XX_GPIO(GPO_P3_GRP, 4)
+#define LED_GPIO LPC32XX_GPIO(GPO_P3_GRP, 1)
+
+/*
+ * AMBA LCD controller
+ */
+static struct clcd_panel conn_lcd_panel = {
+ .mode = {
+ .name = "QVGA portrait",
+ .refresh = 60,
+ .xres = 240,
+ .yres = 320,
+ .pixclock = 191828,
+ .left_margin = 22,
+ .right_margin = 11,
+ .upper_margin = 2,
+ .lower_margin = 1,
+ .hsync_len = 5,
+ .vsync_len = 2,
+ .sync = 0,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+ .width = -1,
+ .height = -1,
+ .tim2 = (TIM2_IVS | TIM2_IHS),
+ .cntl = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) |
+ CNTL_LCDBPP16_565),
+ .bpp = 16,
+};
+#define PANEL_SIZE (3 * SZ_64K)
+
+static int lpc32xx_clcd_setup(struct clcd_fb *fb)
+{
+ dma_addr_t dma;
+
+ fb->fb.screen_base = (void *) NULL;
+#ifdef CONFIG_MACH_LPC32XX_IRAM_FOR_CLCD
+ if (PANEL_SIZE <= LPC32XX_IRAM_SIZE) {
+ fb->fb.screen_base = (void *) io_p2v(IRAM_BASE);
+ fb->fb.fix.smem_start = (dma_addr_t) IRAM_BASE;
+ }
+#endif
+
+ if (fb->fb.screen_base == NULL) {
+ fb->fb.screen_base =
dma_alloc_writecombine(&fb->dev->dev,
+ PANEL_SIZE, &dma, GFP_KERNEL);
+ fb->fb.fix.smem_start = dma;
+ }
+
+ if (!fb->fb.screen_base) {
+ printk(KERN_ERR "CLCD: unable to map framebuffer\n");
+ return -ENOMEM;
+ }
+
+ fb->fb.fix.smem_len = PANEL_SIZE;
+ fb->panel = &conn_lcd_panel;
+
+ gpio_request(LCD_POWER_GPIO, "LCD power");
+ gpio_direction_output(LCD_POWER_GPIO, 1);
+ gpio_request(BKL_POWER_GPIO, "LCD backlight power");
+ gpio_direction_output(BKL_POWER_GPIO, 1);
+
+ return 0;
+}
+
+static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct
*vma)
+{
+#ifdef CONFIG_MACH_LPC32XX_IRAM_FOR_CLCD
+ if (PANEL_SIZE <= LPC32XX_IRAM_SIZE) {
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+ (vma->vm_end - vma->vm_start),
vma->vm_page_prot)) {
+ return -EAGAIN;
+ }
+
+ return 0;
+ } else
+#endif
+
+ return dma_mmap_writecombine(&fb->dev->dev, vma,
+ fb->fb.screen_base,
+ fb->fb.fix.smem_start,
+ fb->fb.fix.smem_len);
+}
+
+static void lpc32xx_clcd_remove(struct clcd_fb *fb)
+{
+#ifdef CONFIG_MACH_LPC32XX_IRAM_FOR_CLCD
+ if (PANEL_SIZE > LPC32XX_IRAM_SIZE)
+ dma_free_writecombine(&fb->dev->dev,
fb->fb.fix.smem_len,
+ fb->fb.screen_base, fb->fb.fix.smem_start);
+
+#else
+ dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
+ fb->fb.screen_base, fb->fb.fix.smem_start);
+#endif
+}
+
+#ifdef CONFIG_PHY3250_QVGA_PANEL_1307_0
+#define LCD_BKL_ON 0
+#define LCD_BKL_OFF 1
+#elif defined(CONFIG_PHY3250_QVGA_PANEL_1307_1)
+#define LCD_BKL_ON 1
+#define LCD_BKL_OFF 0
+#endif
+
+static void clcd_disable(struct clcd_fb *fb)
+{
+ gpio_set_value(BKL_POWER_GPIO, LCD_BKL_OFF);
+ gpio_set_value(LCD_POWER_GPIO, 0);
+}
+
+static void clcd_enable(struct clcd_fb *fb)
+{
+ gpio_set_value(BKL_POWER_GPIO, LCD_BKL_ON);
+ gpio_set_value(LCD_POWER_GPIO, 1);
+}
+
+static struct clcd_board lpc32xx_clcd_data = {
+ .name = "Phytec LCD",
+ .check = clcdfb_check,
+ .decode = clcdfb_decode,
+ .disable = clcd_disable,
+ .enable = clcd_enable,
+ .setup = lpc32xx_clcd_setup,
+ .mmap = lpc32xx_clcd_mmap,
+ .remove = lpc32xx_clcd_remove,
+};
+
+static struct amba_device clcd_device = {
+ .dev = {
+ .coherent_dma_mask = ~0,
+ .init_name = "dev:clcd",
+ .platform_data = &lpc32xx_clcd_data,
+ },
+ .res = {
+ .start = LCD_BASE,
+ .end = (LCD_BASE + SZ_4K - 1),
+ .flags = IORESOURCE_MEM,
+ },
+ .dma_mask = ~0,
+ .irq = {IRQ_LCD, NO_IRQ},
+};
+
+/*
+ * AMBA SSP (SPI)
+ */
+static void phy3250_spi_cs_set(u32 control)
+{
+ gpio_set_value(SPI0_CS_GPIO, (int) control);
+}
+
+static struct pl022_config_chip spi0_chip_info = {
+ .lbm = LOOPBACK_DISABLED,
+ .com_mode = INTERRUPT_TRANSFER,
+ .iface = SSP_INTERFACE_MOTOROLA_SPI,
+ .hierarchy = SSP_MASTER,
+ .slave_tx_disable = 0,
+ .endian_tx = SSP_TX_LSB,
+ .endian_rx = SSP_RX_LSB,
+ .data_size = SSP_DATA_BITS_8,
+ .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM,
+ .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC,
+ .clk_phase = SSP_CLK_FIRST_EDGE,
+ .clk_pol = SSP_CLK_POL_IDLE_LOW,
+ .ctrl_len = SSP_BITS_8,
+ .wait_state = SSP_MWIRE_WAIT_ZERO,
+ .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX,
+ .cs_control = phy3250_spi_cs_set,
+};
+
+static struct pl022_ssp_controller lpc32xx_ssp0_data = {
+ .bus_id = 0,
+ .num_chipselect = 1,
+ .enable_dma = 0,
+};
+
+static struct amba_device ssp0_device = {
+ .dev = {
+ .coherent_dma_mask = ~0,
+ .init_name = "dev:ssp0",
+ .platform_data = &lpc32xx_ssp0_data,
+ },
+ .res = {
+ .start = SSP0_BASE,
+ .end = (SSP0_BASE + SZ_4K - 1),
+ .flags = IORESOURCE_MEM,
+ },
+ .dma_mask = ~0,
+ .irq = {IRQ_SSP0, NO_IRQ},
+};
+
+/* AT25 driver registration */
+static int __init phy3250_spi_board_register(void)
+{
+#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
+ static struct spi_board_info info[] = {
+ {
+ .modalias = "spidev",
+ .max_speed_hz = 5000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .controller_data = &spi0_chip_info,
+ },
+ };
+
+#else
+ static struct spi_eeprom eeprom = {
+ .name = "at25256a",
+ .byte_len = 0x8000,
+ .page_size = 64,
+ .flags = EE_ADDR2,
+ };
+
+ static struct spi_board_info info[] = {
+ {
+ .modalias = "at25",
+ .max_speed_hz = 5000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .platform_data = &eeprom,
+ .controller_data = &spi0_chip_info,
+ },
+ };
+#endif
+ return spi_register_board_info(info, ARRAY_SIZE(info));
+}
+arch_initcall(phy3250_spi_board_register);
+
+static struct i2c_board_info __initdata phy3250_i2c_board_info[] = {
+ {
+ I2C_BOARD_INFO("pcf8563", 0x51),
+ },
+};
+
+static struct gpio_led phy_leds[] = {
+ {
+ .name = "led0",
+ .gpio = LED_GPIO,
+ .active_low = 1,
+ .default_trigger = "heartbeat",
+ },
+};
+
+static struct gpio_led_platform_data led_data = {
+ .leds = phy_leds,
+ .num_leds = ARRAY_SIZE(phy_leds),
+};
+
+static struct platform_device lpc32xx_gpio_led_device = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev.platform_data = &led_data,
+};
+
+static struct platform_device *phy3250_devs[] __initdata = {
+ &i2c0_device,
+ &i2c1_device,
+ &i2c2_device,
+ &watchdog_device,
+ &lpc32xx_gpio_led_device,
+};
+
+static struct amba_device *amba_devs[] __initdata = {
+ &clcd_device,
+ &ssp0_device,
+};
+
+/*
+ * Board specific functions
+ */
+static void __init phy3250_board_init(void)
+{
+ u32 tmp;
+ int i;
+
+ lpc32xx_gpio_init();
+
+ /* Register GPIOs used on this board */
+ gpio_request(SPI0_CS_GPIO, "spi0 cs");
+ gpio_direction_output(SPI0_CS_GPIO, 1);
+
+ /* Setup network interface for RMII mode */
+ tmp = readl(CLKPWR_MACCLK_CTRL(CLKPWR_IOBASE));
+ tmp &= ~CLKPWR_MACCTRL_PINS_MSK;
+ tmp |= CLKPWR_MACCTRL_USE_RMII_PINS;
+ writel(tmp, CLKPWR_MACCLK_CTRL(CLKPWR_IOBASE));
+
+ /* Setup SLC NAND controller muxing */
+ writel(CLKPWR_NANDCLK_SEL_SLC,
+ CLKPWR_NAND_CLK_CTRL(CLKPWR_IOBASE));
+
+ /* Setup LCD muxing to RGB565 */
+ tmp = readl(CLKPWR_LCDCLK_CTRL(CLKPWR_IOBASE)) &
+ ~(CLKPWR_LCDCTRL_LCDTYPE_MSK |
CLKPWR_LCDCTRL_PSCALE_MSK);
+ tmp |= CLKPWR_LCDCTRL_LCDTYPE_TFT16;
+ writel(tmp, CLKPWR_LCDCLK_CTRL(CLKPWR_IOBASE));
+
+ /* Set up I2C pull levels */
+ tmp = readl(CLKPWR_I2C_CLK_CTRL(CLKPWR_IOBASE));
+ tmp |= CLKPWR_I2CCLK_USBI2CHI_DRIVE |
CLKPWR_I2CCLK_I2C2HI_DRIVE;
+ writel(tmp, CLKPWR_I2C_CLK_CTRL(CLKPWR_IOBASE));
+
+ /* Enable DMA for I2S1 channel */
+ tmp = readl(CLKPWR_I2S_CLK_CTRL(CLKPWR_IOBASE));
+ tmp = CLKPWR_I2SCTRL_I2S1_USE_DMA;
+ writel(tmp, CLKPWR_I2S_CLK_CTRL(CLKPWR_IOBASE));
+
+ lpc32xx_serial_init();
+
+ /* AMBA peripheral clocks need to be enabled prior to AMBA
device
+ detection or a data fault will occur, so enable the clocks
+ here. However, we don't want to enable them if the peripheral
+ isn't included in the image */
+#ifdef CONFIG_FB_ARMCLCD
+ tmp = readl(CLKPWR_LCDCLK_CTRL(CLKPWR_IOBASE));
+ writel((tmp | CLKPWR_LCDCTRL_CLK_EN),
+ CLKPWR_LCDCLK_CTRL(CLKPWR_IOBASE));
+#endif
+#ifdef CONFIG_SPI_PL022
+ tmp = readl(CLKPWR_SSP_CLK_CTRL(CLKPWR_IOBASE));
+ writel((tmp | CLKPWR_SSPCTRL_SSPCLK0_EN),
+ CLKPWR_SSP_CLK_CTRL(CLKPWR_IOBASE));
+#endif
+
+ platform_add_devices(phy3250_devs, ARRAY_SIZE(phy3250_devs));
+ for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+ struct amba_device *d = amba_devs[i];
+ amba_device_register(d, &iomem_resource);
+ }
+
+ /* Test clock needed for UDA1380 initial init */
+ writel((CLKPWR_TESTCLK2_SEL_MOSC | CLKPWR_TESTCLK_TESTCLK2_EN),
+ CLKPWR_TEST_CLK_SEL(CLKPWR_IOBASE));
+
+ i2c_register_board_info(0, phy3250_i2c_board_info,
+ ARRAY_SIZE(phy3250_i2c_board_info));
+
+ /* Initialize events and enable the internal RTC alarm interrupt
+ as a system wakeup event */
+ lpc32xx_event_init();
+ lpc32xx_event_enable(LPC32XX_WKUP_RTC_INT);
+
+ /* BTN1 on the Phytec carrier board can be used to wakeup the
board
+ from suspend mode. It is connected to GPI3 and is active
high */
+ lpc32xx_event_enable(LPC32XX_WKUP_GPI03);
+ lpc32xx_event_set(LPC32XX_WKUP_GPI03, 1);
+}
+
+static int __init lpc32xx_display_uid(void)
+{
+ u32 uid[4];
+
+ lpc32xx_get_uid(uid);
+
+ printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n",
+ uid[3], uid[2], uid[1], uid[0]);
+
+ return 1;
+}
+arch_initcall(lpc32xx_display_uid);
+
+MACHINE_START(PHY3250, "Phytec 3250 board with the LPC3250
Microcontroller")
+ /* Maintainer: Kevin Wells, NXP Semiconductors */
+ .phys_io = UART5_BASE,
+ .io_pg_offst = ((io_p2v(UART5_BASE))>>18) & 0xfffc,
+ .boot_params = 0x80000100,
+ .map_io = lpc32xx_map_io,
+ .init_irq = lpc32xx_init_irq,
+ .timer = &lpc32xx_timer,
+ .init_machine = phy3250_board_init,
+MACHINE_END
--
1.6.6
More information about the linux-arm-kernel
mailing list