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58acb1dd2c
This adds a bunch of patches for the v6.1 Gemini kernel. For v5.15 this was down to a single upstream patch, but for kernel v6.2 I reworked the USB code for FOTG210, so instead of carrying over the half-baked and incomplete patch from v5.15 I just backported all the v6.2 patches, 31 in total, as it creates full device USB mode for e.g. D-Link DNS-313. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
135 lines
4.3 KiB
Diff
135 lines
4.3 KiB
Diff
From f011d1eab23f4c063c5441c0d5a22898adf9145c Mon Sep 17 00:00:00 2001
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From: Fabian Vogt <fabian@ritter-vogt.de>
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Date: Mon, 23 Jan 2023 08:35:07 +0100
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Subject: [PATCH 22/29] fotg210-udc: Introduce and use a fotg210_ack_int
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function
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This is in preparation of support for devices where interrupts are acked
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differently.
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Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
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Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Link: https://lore.kernel.org/r/20230123073508.2350402-3-linus.walleij@linaro.org
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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--- a/drivers/usb/fotg210/fotg210-udc.c
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+++ b/drivers/usb/fotg210/fotg210-udc.c
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@@ -28,6 +28,14 @@ static const char udc_name[] = "fotg210_
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static const char * const fotg210_ep_name[] = {
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"ep0", "ep1", "ep2", "ep3", "ep4"};
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+static void fotg210_ack_int(struct fotg210_udc *fotg210, u32 offset, u32 mask)
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+{
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+ u32 value = ioread32(fotg210->reg + offset);
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+
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+ value &= ~mask;
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+ iowrite32(value, fotg210->reg + offset);
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+}
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+
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static void fotg210_disable_fifo_int(struct fotg210_ep *ep)
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{
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u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1);
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@@ -303,8 +311,7 @@ static void fotg210_wait_dma_done(struct
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goto dma_reset;
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} while (!(value & DISGR2_DMA_CMPLT));
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- value &= ~DISGR2_DMA_CMPLT;
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- iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2);
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+ fotg210_ack_int(ep->fotg210, FOTG210_DISGR2, DISGR2_DMA_CMPLT);
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return;
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dma_reset:
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@@ -844,14 +851,6 @@ static void fotg210_ep0in(struct fotg210
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}
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}
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-static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210)
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-{
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- u32 value = ioread32(fotg210->reg + FOTG210_DISGR0);
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-
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- value &= ~DISGR0_CX_COMABT_INT;
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- iowrite32(value, fotg210->reg + FOTG210_DISGR0);
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-}
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-
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static void fotg210_in_fifo_handler(struct fotg210_ep *ep)
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{
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struct fotg210_request *req = list_entry(ep->queue.next,
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@@ -893,60 +892,43 @@ static irqreturn_t fotg210_irq(int irq,
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void __iomem *reg = fotg210->reg + FOTG210_DISGR2;
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u32 int_grp2 = ioread32(reg);
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u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2);
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- u32 value;
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int_grp2 &= ~int_msk2;
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if (int_grp2 & DISGR2_USBRST_INT) {
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usb_gadget_udc_reset(&fotg210->gadget,
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fotg210->driver);
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- value = ioread32(reg);
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- value &= ~DISGR2_USBRST_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_USBRST_INT);
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pr_info("fotg210 udc reset\n");
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}
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if (int_grp2 & DISGR2_SUSP_INT) {
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- value = ioread32(reg);
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- value &= ~DISGR2_SUSP_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_SUSP_INT);
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pr_info("fotg210 udc suspend\n");
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}
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if (int_grp2 & DISGR2_RESM_INT) {
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- value = ioread32(reg);
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- value &= ~DISGR2_RESM_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_RESM_INT);
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pr_info("fotg210 udc resume\n");
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}
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if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) {
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- value = ioread32(reg);
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- value &= ~DISGR2_ISO_SEQ_ERR_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_ISO_SEQ_ERR_INT);
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pr_info("fotg210 iso sequence error\n");
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}
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if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) {
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- value = ioread32(reg);
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- value &= ~DISGR2_ISO_SEQ_ABORT_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_ISO_SEQ_ABORT_INT);
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pr_info("fotg210 iso sequence abort\n");
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}
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if (int_grp2 & DISGR2_TX0BYTE_INT) {
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fotg210_clear_tx0byte(fotg210);
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- value = ioread32(reg);
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- value &= ~DISGR2_TX0BYTE_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_TX0BYTE_INT);
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pr_info("fotg210 transferred 0 byte\n");
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}
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if (int_grp2 & DISGR2_RX0BYTE_INT) {
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fotg210_clear_rx0byte(fotg210);
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- value = ioread32(reg);
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- value &= ~DISGR2_RX0BYTE_INT;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_RX0BYTE_INT);
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pr_info("fotg210 received 0 byte\n");
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}
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if (int_grp2 & DISGR2_DMA_ERROR) {
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- value = ioread32(reg);
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- value &= ~DISGR2_DMA_ERROR;
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- iowrite32(value, reg);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR2, DISGR2_DMA_ERROR);
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}
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}
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@@ -960,7 +942,7 @@ static irqreturn_t fotg210_irq(int irq,
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/* the highest priority in this source register */
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if (int_grp0 & DISGR0_CX_COMABT_INT) {
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- fotg210_clear_comabt_int(fotg210);
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+ fotg210_ack_int(fotg210, FOTG210_DISGR0, DISGR0_CX_COMABT_INT);
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pr_info("fotg210 CX command abort\n");
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}
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