i2c: sun8i_rsb: Only do non-DM pin setup for non-DM I2C

When the DM_I2C driver is loaded, the pin setup is done automatically
from the device tree by the pinctrl driver.

Clean up the code in the process: remove #ifdefs and recognize that the
pin configuration is the same for all sun8i/sun50i SoCs, not just those
which select CONFIG_MACH_SUN8I.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

diff --git a/drivers/i2c/sun8i_rsb.c b/drivers/i2c/sun8i_rsb.c
index 716b245..0dea8f7 100644 (file)
--- a/drivers/i2c/sun8i_rsb.c
+++ b/drivers/i2c/sun8i_rsb.c
@@ -95,27 +95,6 @@ static int sun8i_rsb_set_device_address(struct sunxi_rsb_reg *base,
        return sun8i_rsb_do_trans(base);
 }
 
-static void sun8i_rsb_cfg_io(void)
-{
-#ifdef CONFIG_MACH_SUN8I
-       sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_GPL_R_RSB);
-       sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_GPL_R_RSB);
-       sunxi_gpio_set_pull(SUNXI_GPL(0), 1);
-       sunxi_gpio_set_pull(SUNXI_GPL(1), 1);
-       sunxi_gpio_set_drv(SUNXI_GPL(0), 2);
-       sunxi_gpio_set_drv(SUNXI_GPL(1), 2);
-#elif defined CONFIG_MACH_SUN9I
-       sunxi_gpio_set_cfgpin(SUNXI_GPN(0), SUN9I_GPN_R_RSB);
-       sunxi_gpio_set_cfgpin(SUNXI_GPN(1), SUN9I_GPN_R_RSB);
-       sunxi_gpio_set_pull(SUNXI_GPN(0), 1);
-       sunxi_gpio_set_pull(SUNXI_GPN(1), 1);
-       sunxi_gpio_set_drv(SUNXI_GPN(0), 2);
-       sunxi_gpio_set_drv(SUNXI_GPN(1), 2);
-#else
-#error unsupported MACH_SUNXI
-#endif
-}
-
 static void sun8i_rsb_set_clk(struct sunxi_rsb_reg *base)
 {
        u32 div = 0;
@@ -147,12 +126,6 @@ static int sun8i_rsb_set_device_mode(struct sunxi_rsb_reg *base)
 
 static int sun8i_rsb_init(struct sunxi_rsb_reg *base)
 {
-       /* Enable RSB and PIO clk, and de-assert their resets */
-       prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_RSB);
-
-       /* Setup external pins */
-       sun8i_rsb_cfg_io();
-
        writel(RSB_CTRL_SOFT_RST, &base->ctrl);
        sun8i_rsb_set_clk(base);
 
@@ -185,6 +158,25 @@ int rsb_init(void)
 {
        struct sunxi_rsb_reg *base = (struct sunxi_rsb_reg *)SUNXI_RSB_BASE;
 
+       /* Enable RSB and PIO clk, and de-assert their resets */
+       prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_RSB);
+
+       if (IS_ENABLED(CONFIG_MACH_SUN9I)) {
+               sunxi_gpio_set_cfgpin(SUNXI_GPN(0), SUN9I_GPN_R_RSB);
+               sunxi_gpio_set_cfgpin(SUNXI_GPN(1), SUN9I_GPN_R_RSB);
+               sunxi_gpio_set_pull(SUNXI_GPN(0), 1);
+               sunxi_gpio_set_pull(SUNXI_GPN(1), 1);
+               sunxi_gpio_set_drv(SUNXI_GPN(0), 2);
+               sunxi_gpio_set_drv(SUNXI_GPN(1), 2);
+       } else {
+               sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_GPL_R_RSB);
+               sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_GPL_R_RSB);
+               sunxi_gpio_set_pull(SUNXI_GPL(0), 1);
+               sunxi_gpio_set_pull(SUNXI_GPL(1), 1);
+               sunxi_gpio_set_drv(SUNXI_GPL(0), 2);
+               sunxi_gpio_set_drv(SUNXI_GPL(1), 2);
+       }
+
        return sun8i_rsb_init(base);
 }
 #endif