From: Christophe Kerello christophe.kerello@st.com
This patch handles a configuration list behind pinctrl-0 like pinctrl-0 = <&qspi_clk_a &qspi_bk1_a &qspi_bk2_a>;
Signed-off-by: Christophe Kerello christophe.kerello@st.com Acked-by: Vikas MANOCHA vikas.manocha@st.com --- drivers/pinctrl/pinctrl_stm32.c | 51 ++++++++++++++++++++++++++++++----------- 1 file changed, 38 insertions(+), 13 deletions(-)
diff --git a/drivers/pinctrl/pinctrl_stm32.c b/drivers/pinctrl/pinctrl_stm32.c index 5bee7fb..6183103 100644 --- a/drivers/pinctrl/pinctrl_stm32.c +++ b/drivers/pinctrl/pinctrl_stm32.c @@ -93,39 +93,31 @@ static int prep_gpio_ctl(struct stm32_gpio_ctl *gpio_ctl, u32 gpio_fn, int node) return 0; }
-static int stm32_pinctrl_set_state_simple(struct udevice *dev, - struct udevice *periph) +static int stm32_pinctrl_config(int offset) { u32 pin_mux[MAX_PINS_ONE_IP]; - struct fdtdec_phandle_args args; int rv, len;
- /* Get node pinctrl-0 */ - rv = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(periph), - "pinctrl-0", 0, 0, 0, &args); - if (rv) - return rv; /* * check for "pinmux" property in each subnode (e.g. pins1 and pins2 for * usart1) of pin controller phandle "pinctrl-0" * */ - fdt_for_each_subnode(args.node, gd->fdt_blob, args.node) { + fdt_for_each_subnode(offset, gd->fdt_blob, offset) { struct stm32_gpio_dsc gpio_dsc; struct stm32_gpio_ctl gpio_ctl; int i;
- len = fdtdec_get_int_array_count(gd->fdt_blob, args.node, + len = fdtdec_get_int_array_count(gd->fdt_blob, offset, "pinmux", pin_mux, ARRAY_SIZE(pin_mux)); - debug("%s: periph->name = %s, no of pinmux entries= %d\n", - __func__, periph->name, len); + debug("%s: no of pinmux entries= %d\n", __func__, len); if (len < 0) return -EINVAL; for (i = 0; i < len; i++) { struct gpio_desc desc; debug("%s: pinmux = %x\n", __func__, *(pin_mux + i)); prep_gpio_dsc(&gpio_dsc, *(pin_mux + i)); - prep_gpio_ctl(&gpio_ctl, *(pin_mux + i), args.node); + prep_gpio_ctl(&gpio_ctl, *(pin_mux + i), offset); rv = uclass_get_device_by_seq(UCLASS_GPIO, gpio_dsc.port, &desc.dev); if (rv) @@ -141,6 +133,39 @@ static int stm32_pinctrl_set_state_simple(struct udevice *dev, return 0; }
+static int stm32_pinctrl_set_state_simple(struct udevice *dev, + struct udevice *periph) +{ + const void *fdt = gd->fdt_blob; + const fdt32_t *list; + uint32_t phandle; + int config_node; + int size, i, ret; + + list = fdt_getprop(fdt, dev_of_offset(periph), "pinctrl-0", &size); + if (!list) + return -EINVAL; + + debug("%s: periph->name = %s\n", __func__, periph->name); + + size /= sizeof(*list); + for (i = 0; i < size; i++) { + phandle = fdt32_to_cpu(*list++); + + config_node = fdt_node_offset_by_phandle(fdt, phandle); + if (config_node < 0) { + error("prop pinctrl-0 index %d invalid phandle\n", i); + return -EINVAL; + } + + ret = stm32_pinctrl_config(config_node); + if (ret) + return ret; + } + + return 0; +} + static struct pinctrl_ops stm32_pinctrl_ops = { .set_state_simple = stm32_pinctrl_set_state_simple, };