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From:   Dipen Patel <dipenp@nvidia.com>
To:     <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
        <linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
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        <corbet@lwn.net>, <gregkh@linuxfoundation.org>
CC:     Dipen Patel <dipenp@nvidia.com>
Subject: [PATCH V4 07/10] hte: Add Tegra234 provider
Date:   Wed, 22 Mar 2023 18:29:26 -0700
Message-ID: <20230323012929.10815-8-dipenp@nvidia.com>
In-Reply-To: <20230323012929.10815-1-dipenp@nvidia.com>
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The Tegra234 AON GPIO instance and LIC IRQ support HTE. For the GPIO
HTE support, it also requires to add mapping between GPIO and HTE
framework same as it was done with Tegra194 SoC.

Signed-off-by: Dipen Patel <dipenp@nvidia.com>
---
v2:
- Changed how gpio_chip could be aquired for the mapping

v3:
- Renamed gpio_chip matching function
- Used of_node to fwnode field in gpio_chip matching function
as data as gpio_chip struct does not have of_node member anymore.

v4:
- Logically divide the original v3 patch as follows
- Created this Tegra234 support patch
- Created deprecated nvidia,slices patch
- Created handle nvidia,gpio-controller patch

 drivers/hte/hte-tegra194-test.c |   2 +-
 drivers/hte/hte-tegra194.c      | 124 ++++++++++++++++++++++++++++++--
 2 files changed, 121 insertions(+), 5 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..5d1f947db0f6 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
@@ -220,7 +224,100 @@ 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),
@@ -228,6 +325,14 @@ static const struct tegra_hte_data aon_hte = {
 	.type = HTE_TEGRA_TYPE_GPIO,
 };
 
+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,
+};
+
 static const struct tegra_hte_data lic_hte = {
 	.map_sz = 0,
 	.map = NULL,
@@ -535,7 +640,9 @@ 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-aon", .data = &t194_aon_hte},
+	{ .compatible = "nvidia,tegra234-gte-lic", .data = &lic_hte},
+	{ .compatible = "nvidia,tegra234-gte-aon", .data = &t234_aon_hte},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, tegra_hte_of_match);
@@ -635,8 +742,17 @@ 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);
+		if (of_device_is_compatible(dev->of_node,
+					    "nvidia,tegra194-gte-aon"))
+			hte_dev->c = gpiochip_find("tegra194-gpio-aon",
+						tegra_get_gpiochip_from_name);
+		else if (of_device_is_compatible(dev->of_node,
+						 "nvidia,tegra234-gte-aon"))
+			hte_dev->c = gpiochip_find("tegra234-gpio-aon",
+						tegra_get_gpiochip_from_name);
+		else
+			return -ENODEV;
+
 		if (!hte_dev->c)
 			return dev_err_probe(dev, -EPROBE_DEFER,
 					     "wait for gpio controller\n");
-- 
2.17.1