It adds ACPI probe support for pinctrl-sc8180x driver. We have one
problem with ACPI table, i.e. GIO0 (TLMM) block has one single memory
resource to cover 3 tiles defined by SC8180X. To follow the hardware
layout of 3 tiles which is already supported DT probe, it adds one
function to replace the original single memory resource with 3 named
ones for tiles. With that, We can map memory for ACPI in the same way
as DT.
Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
---
Changes for 4:
- Add sc8180x_pinctrl_add_tile_resources() to massage memory resource
for ACPI probe.
Changes for v3:
- Remove the use of tiles completely.
- Drop unneed include of acpi.h.
Changes for v2:
- Pass soc_data pointer via .driver_data.
- Drop use of CONFIG_ACPI and ACPI_PTR().
- Add comment for sc8180x_acpi_reserved_gpios[] terminator.
drivers/pinctrl/qcom/Kconfig | 2 +-
drivers/pinctrl/qcom/pinctrl-sc8180x.c | 119 ++++++++++++++++++++++++-
2 files changed, 118 insertions(+), 3 deletions(-)
diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index 6853a896c476..9f0218c4f9b3 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -222,7 +222,7 @@ config PINCTRL_SC7280
config PINCTRL_SC8180X
tristate "Qualcomm Technologies Inc SC8180x pin controller driver"
- depends on GPIOLIB && OF
+ depends on GPIOLIB && (OF || ACPI)
select PINCTRL_MSM
help
This is the pinctrl, pinmux, pinconf and gpiolib driver for the
diff --git a/drivers/pinctrl/qcom/pinctrl-sc8180x.c b/drivers/pinctrl/qcom/pinctrl-sc8180x.c
index b765bf667574..4ff80a7a1221 100644
--- a/drivers/pinctrl/qcom/pinctrl-sc8180x.c
+++ b/drivers/pinctrl/qcom/pinctrl-sc8180x.c
@@ -23,6 +23,21 @@ enum {
WEST
};
+/*
+ * ACPI DSDT has one single memory resource for TLMM. The offsets below are
+ * used to locate different tiles for ACPI probe.
+ */
+struct tile_info {
+ u32 offset;
+ u32 size;
+};
+
+static const struct tile_info sc8180x_tile_info[] = {
+ { 0x00d00000, 0x00300000, },
+ { 0x00500000, 0x00700000, },
+ { 0x00100000, 0x00300000, },
+};
+
#define FUNCTION(fname) \
[msm_mux_##fname] = { \
.name = #fname, \
@@ -1557,6 +1572,13 @@ static const struct msm_pingroup sc8180x_groups[] = {
[193] = SDC_QDSD_PINGROUP(sdc2_data, 0x4b2000, 9, 0),
};
+static const int sc8180x_acpi_reserved_gpios[] = {
+ 0, 1, 2, 3,
+ 47, 48, 49, 50,
+ 126, 127, 128, 129,
+ -1 /* terminator */
+};
+
static const struct msm_gpio_wakeirq_map sc8180x_pdc_map[] = {
{ 3, 31 }, { 5, 32 }, { 8, 33 }, { 9, 34 }, { 10, 100 }, { 12, 104 },
{ 24, 37 }, { 26, 38 }, { 27, 41 }, { 28, 42 }, { 30, 39 }, { 36, 43 },
@@ -1588,13 +1610,105 @@ static struct msm_pinctrl_soc_data sc8180x_pinctrl = {
.nwakeirq_map = ARRAY_SIZE(sc8180x_pdc_map),
};
+static const struct msm_pinctrl_soc_data sc8180x_acpi_pinctrl = {
+ .tiles = sc8180x_tiles,
+ .ntiles = ARRAY_SIZE(sc8180x_tiles),
+ .pins = sc8180x_pins,
+ .npins = ARRAY_SIZE(sc8180x_pins),
+ .groups = sc8180x_groups,
+ .ngroups = ARRAY_SIZE(sc8180x_groups),
+ .reserved_gpios = sc8180x_acpi_reserved_gpios,
+ .ngpios = 191,
+};
+
+static int sc8180x_pinctrl_add_tile_resources(struct platform_device *pdev)
+{
+ int nres_num = pdev->num_resources + ARRAY_SIZE(sc8180x_tiles) - 1;
+ struct resource *mres, *nres, *res;
+ int i, ret;
+
+ /*
+ * DT already has tiles defined properly, so nothing needs to be done
+ * for DT probe.
+ */
+ if (pdev->dev.of_node)
+ return 0;
+
+ /* Allocate for new resources */
+ nres = devm_kzalloc(&pdev->dev, sizeof(*nres) * nres_num, GFP_KERNEL);
+ if (!nres)
+ return -ENOMEM;
+
+ res = nres;
+
+ for (i = 0; i < pdev->num_resources; i++) {
+ struct resource *r = &pdev->resource[i];
+
+ /* Save memory resource and copy others */
+ if (resource_type(r) == IORESOURCE_MEM)
+ mres = r;
+ else
+ *res++ = *r;
+ }
+
+ /* Append tile memory resources */
+ for (i = 0; i < ARRAY_SIZE(sc8180x_tiles); i++, res++) {
+ const struct tile_info *info = &sc8180x_tile_info[i];
+
+ res->start = mres->start + info->offset;
+ res->end = mres->start + info->offset + info->size - 1;
+ res->flags = mres->flags;
+ res->name = sc8180x_tiles[i];
+
+ /* Add new MEM to resource tree */
+ insert_resource(mres->parent, res);
+ }
+
+ /* Remove old MEM from resource tree */
+ remove_resource(mres);
+
+ /* Free old resources and install new ones */
+ ret = platform_device_add_resources(pdev, nres, nres_num);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add new resources: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
static int sc8180x_pinctrl_probe(struct platform_device *pdev)
{
- return msm_pinctrl_probe(pdev, &sc8180x_pinctrl);
+ const struct msm_pinctrl_soc_data *soc_data;
+ int ret;
+
+ soc_data = device_get_match_data(&pdev->dev);
+ if (!soc_data)
+ return -EINVAL;
+
+ ret = sc8180x_pinctrl_add_tile_resources(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add tile resources: %d\n", ret);
+ return ret;
+ }
+
+ return msm_pinctrl_probe(pdev, soc_data);
}
+static const struct acpi_device_id sc8180x_pinctrl_acpi_match[] = {
+ {
+ .id = "QCOM040D",
+ .driver_data = (kernel_ulong_t) &sc8180x_acpi_pinctrl,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, sc8180x_pinctrl_acpi_match);
+
static const struct of_device_id sc8180x_pinctrl_of_match[] = {
- { .compatible = "qcom,sc8180x-tlmm", },
+ {
+ .compatible = "qcom,sc8180x-tlmm",
+ .data = &sc8180x_pinctrl,
+ },
{ },
};
MODULE_DEVICE_TABLE(of, sc8180x_pinctrl_of_match);
@@ -1603,6 +1717,7 @@ static struct platform_driver sc8180x_pinctrl_driver = {
.driver = {
.name = "sc8180x-pinctrl",
.of_match_table = sc8180x_pinctrl_of_match,
+ .acpi_match_table = sc8180x_pinctrl_acpi_match,
},
.probe = sc8180x_pinctrl_probe,
.remove = msm_pinctrl_remove,
--
2.17.1
