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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /arch/powerpc/boot/ugecon.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'arch/powerpc/boot/ugecon.c')
-rw-r--r--arch/powerpc/boot/ugecon.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/arch/powerpc/boot/ugecon.c b/arch/powerpc/boot/ugecon.c
new file mode 100644
index 000000000..938a38bd4
--- /dev/null
+++ b/arch/powerpc/boot/ugecon.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * arch/powerpc/boot/ugecon.c
+ *
+ * USB Gecko bootwrapper console.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ */
+
+#include <stddef.h>
+#include "stdio.h"
+#include "types.h"
+#include "io.h"
+#include "ops.h"
+
+
+#define EXI_CLK_32MHZ 5
+
+#define EXI_CSR 0x00
+#define EXI_CSR_CLKMASK (0x7<<4)
+#define EXI_CSR_CLK_32MHZ (EXI_CLK_32MHZ<<4)
+#define EXI_CSR_CSMASK (0x7<<7)
+#define EXI_CSR_CS_0 (0x1<<7) /* Chip Select 001 */
+
+#define EXI_CR 0x0c
+#define EXI_CR_TSTART (1<<0)
+#define EXI_CR_WRITE (1<<2)
+#define EXI_CR_READ_WRITE (2<<2)
+#define EXI_CR_TLEN(len) (((len)-1)<<4)
+
+#define EXI_DATA 0x10
+
+
+/* virtual address base for input/output, retrieved from device tree */
+static void *ug_io_base;
+
+
+static u32 ug_io_transaction(u32 in)
+{
+ u32 *csr_reg = ug_io_base + EXI_CSR;
+ u32 *data_reg = ug_io_base + EXI_DATA;
+ u32 *cr_reg = ug_io_base + EXI_CR;
+ u32 csr, data, cr;
+
+ /* select */
+ csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
+ out_be32(csr_reg, csr);
+
+ /* read/write */
+ data = in;
+ out_be32(data_reg, data);
+ cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
+ out_be32(cr_reg, cr);
+
+ while (in_be32(cr_reg) & EXI_CR_TSTART)
+ barrier();
+
+ /* deselect */
+ out_be32(csr_reg, 0);
+
+ data = in_be32(data_reg);
+ return data;
+}
+
+static int ug_is_txfifo_ready(void)
+{
+ return ug_io_transaction(0xc0000000) & 0x04000000;
+}
+
+static void ug_raw_putc(char ch)
+{
+ ug_io_transaction(0xb0000000 | (ch << 20));
+}
+
+static void ug_putc(char ch)
+{
+ int count = 16;
+
+ if (!ug_io_base)
+ return;
+
+ while (!ug_is_txfifo_ready() && count--)
+ barrier();
+ if (count >= 0)
+ ug_raw_putc(ch);
+}
+
+void ug_console_write(const char *buf, int len)
+{
+ char *b = (char *)buf;
+
+ while (len--) {
+ if (*b == '\n')
+ ug_putc('\r');
+ ug_putc(*b++);
+ }
+}
+
+static int ug_is_adapter_present(void)
+{
+ if (!ug_io_base)
+ return 0;
+ return ug_io_transaction(0x90000000) == 0x04700000;
+}
+
+static void *ug_grab_exi_io_base(void)
+{
+ u32 v;
+ void *devp;
+
+ devp = find_node_by_compatible(NULL, "nintendo,flipper-exi");
+ if (devp == NULL)
+ goto err_out;
+ if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v))
+ goto err_out;
+
+ return (void *)v;
+
+err_out:
+ return NULL;
+}
+
+void *ug_probe(void)
+{
+ void *exi_io_base;
+ int i;
+
+ exi_io_base = ug_grab_exi_io_base();
+ if (!exi_io_base)
+ return NULL;
+
+ /* look for a usbgecko on memcard slots A and B */
+ for (i = 0; i < 2; i++) {
+ ug_io_base = exi_io_base + 0x14 * i;
+ if (ug_is_adapter_present())
+ break;
+ }
+ if (i == 2)
+ ug_io_base = NULL;
+ return ug_io_base;
+}
+