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usb: lpc32xx: add i2c DM support

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Add DM support for i2c functions.

Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Liam Beguin 2017-05-17 13:01:15 -04:00 committed by Marek Vasut
parent fa8967cfba
commit 9ad69f0ba4
1 changed files with 46 additions and 18 deletions
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64
drivers/usb/host/ohci-lpc32xx.c
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@ -9,11 +9,13 @@
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <wait_bit.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/clk.h>
#include <asm/arch/i2c.h>
#include <usb.h>
#include <i2c.h>
@ -81,14 +83,20 @@ struct otg_regs {
static struct otg_regs *otg = (struct otg_regs *)USB_BASE;
static struct clk_pm_regs *clk_pwr = (struct clk_pm_regs *)CLK_PM_BASE;
static int isp1301_set_value(int reg, u8 value)
static int isp1301_set_value(struct udevice *dev, int reg, u8 value)
{
#ifndef CONFIG_DM_I2C
return i2c_write(ISP1301_I2C_ADDR, reg, 1, &value, 1);
#else
return dm_i2c_write(dev, reg, &value, 1);
#endif
}
static void isp1301_configure(void)
static void isp1301_configure(struct udevice *dev)
{
#ifndef CONFIG_DM_I2C
i2c_set_bus_num(I2C_2);
#endif
/*
* LPC32XX only supports DAT_SE0 USB mode
@ -96,23 +104,23 @@ static void isp1301_configure(void)
*/
/* Disable transparent UART mode first */
isp1301_set_value(ISP1301_I2C_MODE_CONTROL_1_CLR, MC1_UART_EN);
isp1301_set_value(dev, ISP1301_I2C_MODE_CONTROL_1_CLR, MC1_UART_EN);
isp1301_set_value(ISP1301_I2C_MODE_CONTROL_1_CLR, ~MC1_SPEED_REG);
isp1301_set_value(ISP1301_I2C_MODE_CONTROL_1_SET, MC1_SPEED_REG);
isp1301_set_value(ISP1301_I2C_MODE_CONTROL_2_CLR, ~0);
isp1301_set_value(ISP1301_I2C_MODE_CONTROL_2_SET,
isp1301_set_value(dev, ISP1301_I2C_MODE_CONTROL_1_CLR, ~MC1_SPEED_REG);
isp1301_set_value(dev, ISP1301_I2C_MODE_CONTROL_1_SET, MC1_SPEED_REG);
isp1301_set_value(dev, ISP1301_I2C_MODE_CONTROL_2_CLR, ~0);
isp1301_set_value(dev, ISP1301_I2C_MODE_CONTROL_2_SET,
MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL);
isp1301_set_value(ISP1301_I2C_OTG_CONTROL_1_CLR, ~0);
isp1301_set_value(ISP1301_I2C_MODE_CONTROL_1_SET, MC1_DAT_SE0);
isp1301_set_value(ISP1301_I2C_OTG_CONTROL_1_SET,
isp1301_set_value(dev, ISP1301_I2C_OTG_CONTROL_1_CLR, ~0);
isp1301_set_value(dev, ISP1301_I2C_MODE_CONTROL_1_SET, MC1_DAT_SE0);
isp1301_set_value(dev, ISP1301_I2C_OTG_CONTROL_1_SET,
OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN);
isp1301_set_value(ISP1301_I2C_OTG_CONTROL_1_CLR,
isp1301_set_value(dev, ISP1301_I2C_OTG_CONTROL_1_CLR,
OTG1_DM_PULLUP | OTG1_DP_PULLUP);
isp1301_set_value(ISP1301_I2C_INTERRUPT_LATCH_CLR, ~0);
isp1301_set_value(ISP1301_I2C_INTERRUPT_FALLING_CLR, ~0);
isp1301_set_value(ISP1301_I2C_INTERRUPT_RISING_CLR, ~0);
isp1301_set_value(dev, ISP1301_I2C_INTERRUPT_LATCH_CLR, ~0);
isp1301_set_value(dev, ISP1301_I2C_INTERRUPT_FALLING_CLR, ~0);
isp1301_set_value(dev, ISP1301_I2C_INTERRUPT_RISING_CLR, ~0);
/* Enable usb_need_clk clock after transceiver is initialized */
setbits_le32(&clk_pwr->usb_ctrl, CLK_USBCTRL_USBDVND_EN);
@ -149,6 +157,15 @@ static int usbpll_setup(void)
int usb_cpu_init(void)
{
u32 ret;
struct udevice *dev = NULL;
#ifdef CONFIG_DM_I2C
ret = i2c_get_chip_for_busnum(I2C_2, ISP1301_I2C_ADDR, 1, &dev);
if (ret) {
debug("%s: No bus %d\n", __func__, I2C_2);
return ret;
}
#endif
/*
* USB pins routing setup is done by "lpc32xx_usb_init()" and should
@ -167,7 +184,7 @@ int usb_cpu_init(void)
return ret;
/* Configure ISP1301 */
isp1301_configure();
isp1301_configure(dev);
/* setup USB clocks and PLL */
ret = usbpll_setup();
@ -188,21 +205,32 @@ int usb_cpu_init(void)
return ret;
setbits_le32(&otg->otg_sts_ctrl, OTG_HOST_EN);
isp1301_set_value(ISP1301_I2C_OTG_CONTROL_1_SET, OTG1_VBUS_DRV);
isp1301_set_value(dev, ISP1301_I2C_OTG_CONTROL_1_SET, OTG1_VBUS_DRV);
return 0;
}
int usb_cpu_stop(void)
{
struct udevice *dev = NULL;
int ret = 0;
#ifdef CONFIG_DM_I2C
ret = i2c_get_chip_for_busnum(I2C_2, ISP1301_I2C_ADDR, 1, &dev);
if (ret) {
debug("%s: No bus %d\n", __func__, I2C_2);
return ret;
}
#endif
/* vbus off */
isp1301_set_value(ISP1301_I2C_OTG_CONTROL_1_SET, OTG1_VBUS_DRV);
isp1301_set_value(dev, ISP1301_I2C_OTG_CONTROL_1_SET, OTG1_VBUS_DRV);
clrbits_le32(&otg->otg_sts_ctrl, OTG_HOST_EN);
clrbits_le32(&clk_pwr->usb_ctrl, CLK_USBCTRL_HCLK_EN);
return 0;
return ret;
}
int usb_cpu_init_fail(void)