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Message-ID: <20230214115553.10416-3-dipenp@nvidia.com>
Date: Tue, 14 Feb 2023 03:55:49 -0800
From: Dipen Patel <dipenp@...dia.com>
To: <thierry.reding@...il.com>, <jonathanh@...dia.com>,
<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
<linux-gpio@...r.kernel.org>, <linus.walleij@...aro.org>,
<devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<robh+dt@...nel.org>, <timestamp@...ts.linux.dev>
CC: Dipen Patel <dipenp@...dia.com>
Subject: [PATCH V2 2/6] hte: Add Tegra234 provider
The Tegra234 AON GPIO instance and LIC IRQ support HTE. For the GPIO
HTE support, it requires to add mapping between GPIO and HTE framework.
Signed-off-by: Dipen Patel <dipenp@...dia.com>
---
v2: Changed how gpio_chip could be aquired for the mapping
drivers/hte/hte-tegra194-test.c | 2 +-
drivers/hte/hte-tegra194.c | 153 ++++++++++++++++++++++++++++----
2 files changed, 139 insertions(+), 16 deletions(-)
diff --git a/drivers/hte/hte-tegra194-test.c b/drivers/hte/hte-tegra194-test.c
index 5d776a185bd6..d79c28a80517 100644
--- a/drivers/hte/hte-tegra194-test.c
+++ b/drivers/hte/hte-tegra194-test.c
@@ -16,7 +16,7 @@
#include <linux/hte.h>
/*
- * This sample HTE GPIO test driver demonstrates HTE API usage by enabling
+ * This sample HTE test driver demonstrates HTE API usage by enabling
* hardware timestamp on gpio_in and specified LIC IRQ lines.
*
* Note: gpio_out and gpio_in need to be shorted externally in order for this
diff --git a/drivers/hte/hte-tegra194.c b/drivers/hte/hte-tegra194.c
index 49a27af22742..7f0d6e7efd34 100644
--- a/drivers/hte/hte-tegra194.c
+++ b/drivers/hte/hte-tegra194.c
@@ -62,6 +62,10 @@
#define NV_AON_HTE_SLICE2_IRQ_GPIO_25 25
#define NV_AON_HTE_SLICE2_IRQ_GPIO_26 26
#define NV_AON_HTE_SLICE2_IRQ_GPIO_27 27
+#define NV_AON_HTE_SLICE2_IRQ_GPIO_28 28
+#define NV_AON_HTE_SLICE2_IRQ_GPIO_29 29
+#define NV_AON_HTE_SLICE2_IRQ_GPIO_30 30
+#define NV_AON_HTE_SLICE2_IRQ_GPIO_31 31
#define HTE_TECTRL 0x0
#define HTE_TETSCH 0x4
@@ -114,6 +118,7 @@ struct tegra_hte_line_data {
struct tegra_hte_data {
enum tegra_hte_type type;
+ u32 slices;
u32 map_sz;
u32 sec_map_sz;
const struct tegra_hte_line_mapped *map;
@@ -220,18 +225,129 @@ static const struct tegra_hte_line_mapped tegra194_aon_gpio_sec_map[] = {
[39] = {NV_AON_SLICE_INVALID, 0},
};
-static const struct tegra_hte_data aon_hte = {
+static const struct tegra_hte_line_mapped tegra234_aon_gpio_map[] = {
+ /* gpio, slice, bit_index */
+ /* AA port */
+ [0] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_11},
+ [1] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_10},
+ [2] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_9},
+ [3] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_8},
+ [4] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_7},
+ [5] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_6},
+ [6] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_5},
+ [7] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_4},
+ /* BB port */
+ [8] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_3},
+ [9] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_2},
+ [10] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_1},
+ [11] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_0},
+ /* CC port */
+ [12] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_22},
+ [13] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_21},
+ [14] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_20},
+ [15] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_19},
+ [16] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_18},
+ [17] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_17},
+ [18] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_16},
+ [19] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_15},
+ /* DD port */
+ [20] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_14},
+ [21] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_13},
+ [22] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_12},
+ /* EE port */
+ [23] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_31},
+ [24] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_30},
+ [25] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_29},
+ [26] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_28},
+ [27] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_27},
+ [28] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_26},
+ [29] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_25},
+ [30] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_24},
+ /* GG port */
+ [31] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_23},
+};
+
+static const struct tegra_hte_line_mapped tegra234_aon_gpio_sec_map[] = {
+ /* gpio, slice, bit_index */
+ /* AA port */
+ [0] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_11},
+ [1] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_10},
+ [2] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_9},
+ [3] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_8},
+ [4] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_7},
+ [5] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_6},
+ [6] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_5},
+ [7] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_4},
+ /* BB port */
+ [8] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_3},
+ [9] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_2},
+ [10] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_1},
+ [11] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_0},
+ [12] = {NV_AON_SLICE_INVALID, 0},
+ [13] = {NV_AON_SLICE_INVALID, 0},
+ [14] = {NV_AON_SLICE_INVALID, 0},
+ [15] = {NV_AON_SLICE_INVALID, 0},
+ /* CC port */
+ [16] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_22},
+ [17] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_21},
+ [18] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_20},
+ [19] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_19},
+ [20] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_18},
+ [21] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_17},
+ [22] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_16},
+ [23] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_15},
+ /* DD port */
+ [24] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_14},
+ [25] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_13},
+ [26] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_12},
+ [27] = {NV_AON_SLICE_INVALID, 0},
+ [28] = {NV_AON_SLICE_INVALID, 0},
+ [29] = {NV_AON_SLICE_INVALID, 0},
+ [30] = {NV_AON_SLICE_INVALID, 0},
+ [31] = {NV_AON_SLICE_INVALID, 0},
+ /* EE port */
+ [32] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_31},
+ [33] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_30},
+ [34] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_29},
+ [35] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_28},
+ [36] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_27},
+ [37] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_26},
+ [38] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_25},
+ [39] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_24},
+ /* GG port */
+ [40] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_23},
+};
+
+static const struct tegra_hte_data t194_aon_hte = {
.map_sz = ARRAY_SIZE(tegra194_aon_gpio_map),
.map = tegra194_aon_gpio_map,
.sec_map_sz = ARRAY_SIZE(tegra194_aon_gpio_sec_map),
.sec_map = tegra194_aon_gpio_sec_map,
.type = HTE_TEGRA_TYPE_GPIO,
+ .slices = 3,
};
-static const struct tegra_hte_data lic_hte = {
+static const struct tegra_hte_data t234_aon_hte = {
+ .map_sz = ARRAY_SIZE(tegra234_aon_gpio_map),
+ .map = tegra234_aon_gpio_map,
+ .sec_map_sz = ARRAY_SIZE(tegra234_aon_gpio_sec_map),
+ .sec_map = tegra234_aon_gpio_sec_map,
+ .type = HTE_TEGRA_TYPE_GPIO,
+ .slices = 3,
+};
+
+static const struct tegra_hte_data t194_lic_hte = {
.map_sz = 0,
.map = NULL,
.type = HTE_TEGRA_TYPE_LIC,
+ .slices = 11,
+};
+
+static const struct tegra_hte_data t234_lic_hte = {
+ .map_sz = 0,
+ .map = NULL,
+ .type = HTE_TEGRA_TYPE_LIC,
+ .slices = 17,
};
static inline u32 tegra_hte_readl(struct tegra_hte_soc *hte, u32 reg)
@@ -534,8 +650,10 @@ static bool tegra_hte_match_from_linedata(const struct hte_chip *chip,
}
static const struct of_device_id tegra_hte_of_match[] = {
- { .compatible = "nvidia,tegra194-gte-lic", .data = &lic_hte},
- { .compatible = "nvidia,tegra194-gte-aon", .data = &aon_hte},
+ { .compatible = "nvidia,tegra194-gte-lic", .data = &t194_lic_hte},
+ { .compatible = "nvidia,tegra194-gte-aon", .data = &t194_aon_hte},
+ { .compatible = "nvidia,tegra234-gte-lic", .data = &t234_lic_hte},
+ { .compatible = "nvidia,tegra234-gte-aon", .data = &t234_aon_hte},
{ }
};
MODULE_DEVICE_TABLE(of, tegra_hte_of_match);
@@ -556,9 +674,9 @@ static void tegra_gte_disable(void *data)
tegra_hte_writel(gs, HTE_TECTRL, 0);
}
-static int tegra_get_gpiochip_from_name(struct gpio_chip *chip, void *data)
+static int tegra_get_gpiochip_from_of_node(struct gpio_chip *chip, void *data)
{
- return !strcmp(chip->label, data);
+ return chip->of_node == data;
}
static int tegra_hte_probe(struct platform_device *pdev)
@@ -569,16 +687,10 @@ static int tegra_hte_probe(struct platform_device *pdev)
struct device *dev;
struct tegra_hte_soc *hte_dev;
struct hte_chip *gc;
+ struct device_node *gpio_ctrl;
dev = &pdev->dev;
- ret = of_property_read_u32(dev->of_node, "nvidia,slices", &slices);
- if (ret != 0) {
- dev_err(dev, "Could not read slices\n");
- return -EINVAL;
- }
- nlines = slices << 5;
-
hte_dev = devm_kzalloc(dev, sizeof(*hte_dev), GFP_KERNEL);
if (!hte_dev)
return -ENOMEM;
@@ -590,6 +702,9 @@ static int tegra_hte_probe(struct platform_device *pdev)
dev_set_drvdata(&pdev->dev, hte_dev);
hte_dev->prov_data = of_device_get_match_data(&pdev->dev);
+ slices = hte_dev->prov_data->slices;
+ nlines = slices << 5;
+
hte_dev->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(hte_dev->regs))
return PTR_ERR(hte_dev->regs);
@@ -635,8 +750,16 @@ static int tegra_hte_probe(struct platform_device *pdev)
gc->match_from_linedata = tegra_hte_match_from_linedata;
- hte_dev->c = gpiochip_find("tegra194-gpio-aon",
- tegra_get_gpiochip_from_name);
+ gpio_ctrl = of_parse_phandle(dev->of_node,
+ "nvidia,gpio-controller", 0);
+ if (!gpio_ctrl) {
+ dev_err(dev, "gpio controller node not found\n");
+ return -ENODEV;
+ }
+
+ hte_dev->c = gpiochip_find(gpio_ctrl,
+ tegra_get_gpiochip_from_of_node);
+ of_node_put(gpio_ctrl);
if (!hte_dev->c)
return dev_err_probe(dev, -EPROBE_DEFER,
"wait for gpio controller\n");
--
2.17.1
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