From: Oleksij Rempel <o.rempel@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Subject: [PATCH v1 1/4] usb: dwc2: Port support for USB FIFO devicetree properties from Linux v6.3
Date: Wed, 3 May 2023 12:19:16 +0200 [thread overview]
Message-ID: <20230503101919.1826193-2-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20230503101919.1826193-1-o.rempel@pengutronix.de>
This patch ports the support for "g-rx-fifo-size", "g-np-tx-fifo-size",
and "g-tx-fifo-size" devicetree properties from Linux kernel v6.3. These
properties are required for proper FIFO configuration of different USB
endpoints in the gadget mode.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/usb/dwc2/core.c | 27 +++++++++++++++++++++++++++
drivers/usb/dwc2/dwc2.c | 1 +
drivers/usb/dwc2/dwc2.h | 1 +
3 files changed, 29 insertions(+)
diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index 9edd56d483..b198ba6bf8 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -188,6 +188,33 @@ void dwc2_set_default_params(struct dwc2 *dwc2)
}
}
+void dwc2_get_device_properties(struct dwc2 *dwc2)
+{
+ struct dwc2_core_params *p = &dwc2->params;
+ struct device_node *np = dwc2->dev->of_node;
+ int num;
+
+ if ((dwc2->dr_mode == USB_DR_MODE_PERIPHERAL) ||
+ (dwc2->dr_mode == USB_DR_MODE_OTG)) {
+ of_property_read_u32(np, "g-rx-fifo-size",
+ &p->g_rx_fifo_size);
+
+ of_property_read_u32(np, "g-np-tx-fifo-size",
+ &p->g_np_tx_fifo_size);
+
+ num = of_property_count_elems_of_size(np, "g-tx-fifo-size", sizeof(u32));
+ if (num > 0) {
+ num = min(num, 15);
+ memset(p->g_tx_fifo_size, 0,
+ sizeof(p->g_tx_fifo_size));
+ of_property_read_u32_array(np,
+ "g-tx-fifo-size",
+ &p->g_tx_fifo_size[1],
+ num);
+ }
+ }
+}
+
int dwc2_check_core_version(struct dwc2 *dwc2)
{
struct dwc2_hw_params *hw = &dwc2->hw_params;
diff --git a/drivers/usb/dwc2/dwc2.c b/drivers/usb/dwc2/dwc2.c
index ff4842ce62..3564cdd1d1 100644
--- a/drivers/usb/dwc2/dwc2.c
+++ b/drivers/usb/dwc2/dwc2.c
@@ -148,6 +148,7 @@ static int dwc2_probe(struct device *dev)
goto error;
dwc2_set_default_params(dwc2);
+ dwc2_get_device_properties(dwc2);
set_params = of_device_get_match_data(dev);
if (set_params)
diff --git a/drivers/usb/dwc2/dwc2.h b/drivers/usb/dwc2/dwc2.h
index 15d4b69759..2e740a890e 100644
--- a/drivers/usb/dwc2/dwc2.h
+++ b/drivers/usb/dwc2/dwc2.h
@@ -9,6 +9,7 @@
/* Core functions */
void dwc2_set_default_params(struct dwc2 *dwc2);
+void dwc2_get_device_properties(struct dwc2 *dwc2);
int dwc2_check_core_version(struct dwc2 *dwc2);
void dwc2_get_hwparams(struct dwc2 *dwc2);
--
2.39.2
next prev parent reply other threads:[~2023-05-03 10:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-03 10:19 [PATCH v1 0/4] Improve USB FIFO handling and enable UMS mode on PRTT1L boards Oleksij Rempel
2023-05-03 10:19 ` Oleksij Rempel [this message]
2023-05-03 10:19 ` [PATCH v1 2/4] usb: dwc2: Port FIFO configuration sync from Linux v6.3 Oleksij Rempel
2023-05-03 10:19 ` [PATCH v1 3/4] usb: dwc2: fix multiplier handling in endpoint setup Oleksij Rempel
2023-05-03 10:19 ` [PATCH v1 4/4] arm: dts: stm32mp151-prtt1l: Configure USB gadget FIFOs for multiple gadgets support Oleksij Rempel
2023-05-03 10:25 ` Ahmad Fatoum
2023-05-03 11:01 ` Oleksij Rempel
2023-05-05 6:39 ` [PATCH v1 0/4] Improve USB FIFO handling and enable UMS mode on PRTT1L boards Sascha Hauer
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