From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sylvain Lemieux Date: Wed, 26 Apr 2017 07:57:49 -0400 Subject: [U-Boot] [PATCH v3] usb: lpc32xx: add i2c DM support Message-ID: <20170426115749.14570-1-slemieux.tyco@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Liam Beguin Add DM support for i2c functions. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux --- Changes from v2 to v3: * Code clean-up to remove conditional compile else section (CONFIG_DM_I2C). * As suggested by Marek, added Simon Glass to the list of cc for the patch. Changes from v1 to v2: * Do not request udevice on each single i2c write. Note: * This patch is require as part of the DM support of the LPC32xx I2C driver. All I2C drivers should be converted, to DM, by the end of June 2017. * The USB driver is supporting the DM and non-DM API. * Once the ustream LPC32xx boards (devkit3250 & work_92105) are migrated to DM (I2C), the non-DM API support can be remove from this driver. drivers/usb/host/ohci-lpc32xx.c | 64 +++++++++++++++++++++++++++++------------ 1 file changed, 46 insertions(+), 18 deletions(-) diff --git a/drivers/usb/host/ohci-lpc32xx.c b/drivers/usb/host/ohci-lpc32xx.c index 9245126ed6..c0c423b994 100644 --- a/drivers/usb/host/ohci-lpc32xx.c +++ b/drivers/usb/host/ohci-lpc32xx.c @@ -14,8 +14,10 @@ #include #include #include +#include #include #include +#include /* OTG I2C controller module register structures */ struct otgi2c_regs { @@ -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) -- 2.11.0