Use gpio_request for all the gpios that are utilized by various subsystems in cm-fx6, and refactor the relevant init functions so that all gpios are requested during board_init(), not during subsystem init, thus avoiding the need to manage gpio ownership each time a subsystem is initialized.
The new division of labor is: During board_init() muxes are setup and gpios are requested. During subsystem init gpios are toggled.
Cc: Igor Grinberg grinberg@compulab.co.il Cc: Simon Glass sjg@chromium.org Signed-off-by: Nikita Kiryanov nikita@compulab.co.il --- board/compulab/cm_fx6/cm_fx6.c | 133 +++++++++++++++++++++++++++++------------ 1 file changed, 94 insertions(+), 39 deletions(-)
diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index 9c6e686..f0edc8f 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -69,16 +69,23 @@ static iomux_v3_cfg_t const sata_pads[] = { IOMUX_PADS(PAD_EIM_BCLK__GPIO6_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)), };
-static void cm_fx6_setup_issd(void) +static int cm_fx6_setup_issd(void) { + int ret, i; + SETUP_IOMUX_PADS(sata_pads); - /* Make sure this gpio has logical 0 value */ - gpio_direction_output(CM_FX6_SATA_PWLOSS_INT, 0); - udelay(100);
- cm_fx6_sata_power(0); - mdelay(250); - cm_fx6_sata_power(1); + for (i = 0; i < ARRAY_SIZE(cm_fx6_issd_gpios); i++) { + ret = gpio_request(cm_fx6_issd_gpios[i], "sata"); + if (ret) + return ret; + } + + ret = gpio_request(CM_FX6_SATA_PWLOSS_INT, "sata_pwloss_int"); + if (ret) + return ret; + + return 0; }
#define CM_FX6_SATA_INIT_RETRIES 10 @@ -86,7 +93,14 @@ int sata_initialize(void) { int err, i;
- cm_fx6_setup_issd(); + /* Make sure this gpio has logical 0 value */ + gpio_direction_output(CM_FX6_SATA_PWLOSS_INT, 0); + udelay(100); + + cm_fx6_sata_power(0); + mdelay(250); + cm_fx6_sata_power(1); + for (i = 0; i < CM_FX6_SATA_INIT_RETRIES; i++) { err = setup_sata(); if (err) { @@ -109,6 +123,8 @@ int sata_initialize(void)
return err; } +#else +static int cm_fx6_setup_issd(void) { return 0; } #endif
#ifdef CONFIG_SYS_I2C_MXC @@ -177,35 +193,32 @@ static int cm_fx6_setup_i2c(void) { return 0; } #define WEAK_PULLDOWN (PAD_CTL_PUS_100K_DOWN | \ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ PAD_CTL_HYS | PAD_CTL_SRE_SLOW) +#define MX6_USBNC_BASEADDR 0x2184800 +#define USBNC_USB_H1_PWR_POL (1 << 9)
-static int cm_fx6_usb_hub_reset(void) +static int cm_fx6_setup_usb_host(void) { int err;
err = gpio_request(CM_FX6_USB_HUB_RST, "usb hub rst"); - if (err) { - printf("USB hub rst gpio request failed: %d\n", err); - return -1; - } + if (err) + return err;
+ SETUP_IOMUX_PAD(PAD_GPIO_0__USB_H1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL)); SETUP_IOMUX_PAD(PAD_SD3_RST__GPIO7_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL)); - gpio_direction_output(CM_FX6_USB_HUB_RST, 0); - udelay(10); - gpio_direction_output(CM_FX6_USB_HUB_RST, 1); - mdelay(1);
return 0; }
-static int cm_fx6_init_usb_otg(void) +static int cm_fx6_setup_usb_otg(void) { - int ret; + int err; struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
- ret = gpio_request(SB_FX6_USB_OTG_PWR, "usb-pwr"); - if (ret) { - printf("USB OTG pwr gpio request failed: %d\n", ret); - return ret; + err = gpio_request(SB_FX6_USB_OTG_PWR, "usb-pwr"); + if (err) { + printf("USB OTG pwr gpio request failed: %d\n", err); + return err; }
SETUP_IOMUX_PAD(PAD_EIM_D22__GPIO3_IO22 | MUX_PAD_CTRL(NO_PAD_CTRL)); @@ -216,25 +229,27 @@ static int cm_fx6_init_usb_otg(void) return gpio_direction_output(SB_FX6_USB_OTG_PWR, 0); }
-#define MX6_USBNC_BASEADDR 0x2184800 -#define USBNC_USB_H1_PWR_POL (1 << 9) int board_ehci_hcd_init(int port) { + int ret; u32 *usbnc_usb_uh1_ctrl = (u32 *)(MX6_USBNC_BASEADDR + 4);
- switch (port) { - case 0: - return cm_fx6_init_usb_otg(); - case 1: - SETUP_IOMUX_PAD(PAD_GPIO_0__USB_H1_PWR | - MUX_PAD_CTRL(NO_PAD_CTRL)); + /* Only 1 host controller in use. port 0 is OTG & needs no attention */ + if (port != 1) + return 0;
- /* Set PWR polarity to match power switch's enable polarity */ - setbits_le32(usbnc_usb_uh1_ctrl, USBNC_USB_H1_PWR_POL); - return cm_fx6_usb_hub_reset(); - default: - break; - } + /* Set PWR polarity to match power switch's enable polarity */ + setbits_le32(usbnc_usb_uh1_ctrl, USBNC_USB_H1_PWR_POL); + ret = gpio_direction_output(CM_FX6_USB_HUB_RST, 0); + if (ret) + return ret; + + udelay(10); + ret = gpio_direction_output(CM_FX6_USB_HUB_RST, 1); + if (ret) + return ret; + + mdelay(1);
return 0; } @@ -246,6 +261,9 @@ int board_ehci_power(int port, int on)
return 0; } +#else +static int cm_fx6_setup_usb_otg(void) { return 0; } +static int cm_fx6_setup_usb_host(void) { return 0; } #endif
#ifdef CONFIG_FEC_MXC @@ -340,12 +358,17 @@ static int handle_mac_address(void)
int board_eth_init(bd_t *bis) { - int res = handle_mac_address(); - if (res) + int err; + + err = handle_mac_address(); + if (err) puts("No MAC address found\n");
SETUP_IOMUX_PADS(enet_pads); /* phy reset */ + err = gpio_request(CM_FX6_ENET_NRST, "enet_nrst"); + if (err) + printf("Etnernet NRST gpio request failed: %d\n", err); gpio_direction_output(CM_FX6_ENET_NRST, 0); udelay(500); gpio_set_value(CM_FX6_ENET_NRST, 1); @@ -416,6 +439,16 @@ int board_mmc_init(bd_t *bis) } #endif
+#ifdef CONFIG_MXC_SPI +int cm_fx6_setup_ecspi(void) +{ + cm_fx6_set_ecspi_iomux(); + return gpio_request(CM_FX6_ECSPI_BUS0_CS0, "ecspi_bus0_cs0"); +} +#else +int cm_fx6_setup_ecspi(void) { return 0; } +#endif + #ifdef CONFIG_OF_BOARD_SETUP void ft_board_setup(void *blob, bd_t *bd) { @@ -436,6 +469,28 @@ int board_init(void) gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; cm_fx6_setup_gpmi_nand();
+ ret = cm_fx6_setup_ecspi(); + if (ret) + printf("Warning: ECSPI setup failed: %d\n", ret); + + ret = cm_fx6_setup_usb_otg(); + if (ret) + printf("Warning: USB OTG setup failed: %d\n", ret); + + ret = cm_fx6_setup_usb_host(); + if (ret) + printf("Warning: USB host setup failed: %d\n", ret); + + /* + * cm-fx6 may have iSSD not assembled and in this case it has + * bypasses for a (m)SATA socket on the baseboard. The socketed + * device is not controlled by those GPIOs. So just print a warning + * if the setup fails. + */ + ret = cm_fx6_setup_issd(); + if (ret) + printf("Warning: iSSD setup failed: %d\n", ret); + /* Warn on failure but do not abort boot */ ret = cm_fx6_setup_i2c(); if (ret)