For now this just enables MPEG-2 decoding on the Hantro G1 on i.MX8MQ. Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> --- Changes since v2 [1]: - Adapted to changes in patches 4 and 5 [1] https://patchwork.linuxtv.org/patch/56420/ --- drivers/staging/media/hantro/Kconfig | 8 +- drivers/staging/media/hantro/Makefile | 1 + drivers/staging/media/hantro/hantro_drv.c | 1 + drivers/staging/media/hantro/hantro_hw.h | 1 + drivers/staging/media/hantro/imx8m_vpu_hw.c | 171 ++++++++++++++++++++ 5 files changed, 178 insertions(+), 4 deletions(-) create mode 100644 drivers/staging/media/hantro/imx8m_vpu_hw.c diff --git a/drivers/staging/media/hantro/Kconfig b/drivers/staging/media/hantro/Kconfig index 660cca358f04..6fdb72df7bd3 100644 --- a/drivers/staging/media/hantro/Kconfig +++ b/drivers/staging/media/hantro/Kconfig @@ -1,15 +1,15 @@ # SPDX-License-Identifier: GPL-2.0 config VIDEO_HANTRO tristate "Hantro VPU driver" - depends on ARCH_ROCKCHIP || COMPILE_TEST + depends on ARCH_MXC || ARCH_ROCKCHIP || COMPILE_TEST depends on VIDEO_DEV && VIDEO_V4L2 && MEDIA_CONTROLLER depends on MEDIA_CONTROLLER_REQUEST_API select VIDEOBUF2_DMA_CONTIG select VIDEOBUF2_VMALLOC select V4L2_MEM2MEM_DEV help - Support for the Hantro IP based Video Processing Unit present on - Rockchip SoC, which accelerates video and image encoding and - decoding. + Support for the Hantro IP based Video Processing Units present on + Rockchip and NXP i.MX8M SoCs, which accelerate video and image + encoding and decoding. To compile this driver as a module, choose M here: the module will be called hantro-vpu. diff --git a/drivers/staging/media/hantro/Makefile b/drivers/staging/media/hantro/Makefile index 14f17a4e48cb..1dac16af451e 100644 --- a/drivers/staging/media/hantro/Makefile +++ b/drivers/staging/media/hantro/Makefile @@ -9,5 +9,6 @@ hantro-vpu-y += \ rk3399_vpu_hw.o \ rk3399_vpu_hw_jpeg_enc.o \ rk3399_vpu_hw_mpeg2_dec.o \ + imx8m_vpu_hw.o \ hantro_jpeg.o \ hantro_mpeg2.o diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c index 1f756e06dfc6..bf88e594d440 100644 --- a/drivers/staging/media/hantro/hantro_drv.c +++ b/drivers/staging/media/hantro/hantro_drv.c @@ -418,6 +418,7 @@ static const struct of_device_id of_hantro_match[] = { { .compatible = "rockchip,rk3399-vpu", .data = &rk3399_vpu_variant, }, { .compatible = "rockchip,rk3328-vpu", .data = &rk3328_vpu_variant, }, { .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, }, + { .compatible = "nxp,imx8mq-vpu", .data = &imx8mq_vpu_variant, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, of_hantro_match); diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h index 3c361c2e9b88..fd6ad017a1cf 100644 --- a/drivers/staging/media/hantro/hantro_hw.h +++ b/drivers/staging/media/hantro/hantro_hw.h @@ -81,6 +81,7 @@ enum hantro_enc_fmt { extern const struct hantro_variant rk3399_vpu_variant; extern const struct hantro_variant rk3328_vpu_variant; extern const struct hantro_variant rk3288_vpu_variant; +extern const struct hantro_variant imx8mq_vpu_variant; void hantro_watchdog(struct work_struct *work); void hantro_run(struct hantro_ctx *ctx); diff --git a/drivers/staging/media/hantro/imx8m_vpu_hw.c b/drivers/staging/media/hantro/imx8m_vpu_hw.c new file mode 100644 index 000000000000..3da5cbd1eab1 --- /dev/null +++ b/drivers/staging/media/hantro/imx8m_vpu_hw.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Hantro VPU codec driver + * + * Copyright (C) 2019 Pengutronix, Philipp Zabel <kernel@xxxxxxxxxxxxxx> + */ + +#include <linux/clk.h> +#include <linux/delay.h> + +#include "hantro.h" +#include "hantro_jpeg.h" +#include "rk3288_vpu_regs.h" + +#define CTRL_SOFT_RESET 0x00 +#define RESET_G1 BIT(1) +#define RESET_G2 BIT(0) + +#define CTRL_CLOCK_ENABLE 0x04 +#define CLOCK_G1 BIT(1) +#define CLOCK_G2 BIT(0) + +#define CTRL_G1_DEC_FUSE 0x08 +#define CTRL_G1_PP_FUSE 0x0c +#define CTRL_G2_DEC_FUSE 0x10 + +static void imx8m_soft_reset(struct hantro_dev *vpu, u32 reset_bits) +{ + u32 val; + + /* Assert */ + val = readl(vpu->ctrl_base + CTRL_SOFT_RESET); + val &= ~reset_bits; + writel(val, vpu->ctrl_base + CTRL_SOFT_RESET); + + udelay(2); + + /* Release */ + val = readl(vpu->ctrl_base + CTRL_SOFT_RESET); + val |= reset_bits; + writel(val, vpu->ctrl_base + CTRL_SOFT_RESET); +} + +static void imx8m_clk_enable(struct hantro_dev *vpu, u32 clock_bits) +{ + u32 val; + + val = readl(vpu->ctrl_base + CTRL_CLOCK_ENABLE); + val |= clock_bits; + writel(val, vpu->ctrl_base + CTRL_CLOCK_ENABLE); +} + +static int imx8mq_runtime_resume(struct hantro_dev *vpu) +{ + int ret; + + ret = clk_bulk_prepare_enable(vpu->variant->num_clocks, vpu->clocks); + if (ret) { + dev_err(vpu->dev, "Failed to enable clocks\n"); + return ret; + } + + imx8m_soft_reset(vpu, RESET_G1 | RESET_G2); + imx8m_clk_enable(vpu, CLOCK_G1 | CLOCK_G2); + + /* Set values of the fuse registers */ + writel(0xffffffff, vpu->ctrl_base + CTRL_G1_DEC_FUSE); + writel(0xffffffff, vpu->ctrl_base + CTRL_G1_PP_FUSE); + writel(0xffffffff, vpu->ctrl_base + CTRL_G2_DEC_FUSE); + + clk_bulk_disable_unprepare(vpu->variant->num_clocks, vpu->clocks); + + return 0; +} + +/* + * Supported formats. + */ + +static const struct hantro_fmt imx8m_vpu_dec_fmts[] = { + { + .fourcc = V4L2_PIX_FMT_NV12, + .codec_mode = HANTRO_MODE_NONE, + }, + { + .fourcc = V4L2_PIX_FMT_MPEG2_SLICE, + .codec_mode = HANTRO_MODE_MPEG2_DEC, + .max_depth = 2, + .frmsize = { + .min_width = 48, + .max_width = 1920, + .step_width = MPEG2_MB_DIM, + .min_height = 48, + .max_height = 1088, + .step_height = MPEG2_MB_DIM, + }, + }, +}; + +static irqreturn_t imx8m_vpu_g1_irq(int irq, void *dev_id) +{ + struct hantro_dev *vpu = dev_id; + enum vb2_buffer_state state; + u32 status; + + status = vdpu_read(vpu, VDPU_REG_INTERRUPT); + state = (status & VDPU_REG_INTERRUPT_DEC_RDY_INT) ? + VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR; + + vdpu_write(vpu, 0, VDPU_REG_INTERRUPT); + vdpu_write(vpu, VDPU_REG_CONFIG_DEC_CLK_GATE_E, VDPU_REG_CONFIG); + + hantro_irq_done(vpu, 0, state); + + return IRQ_HANDLED; +} + +static int imx8mq_vpu_hw_init(struct hantro_dev *vpu) +{ + vpu->dec_base = vpu->bases[0]; + vpu->ctrl_base = vpu->bases[vpu->variant->num_regs - 1]; + + return 0; +} + +static void imx8m_vpu_g1_reset(struct hantro_ctx *ctx) +{ + struct hantro_dev *vpu = ctx->dev; + + imx8m_soft_reset(vpu, RESET_G1); +} + +/* + * Supported codec ops. + */ + +static const struct hantro_codec_ops imx8mq_vpu_codec_ops[] = { + [HANTRO_MODE_MPEG2_DEC] = { + .run = hantro_g1_mpeg2_dec_run, + .reset = imx8m_vpu_g1_reset, + .init = hantro_mpeg2_dec_init, + .exit = hantro_mpeg2_dec_exit, + }, +}; + +/* + * VPU variants. + */ + +static const struct hantro_irq imx8mq_irqs[] = { + { "g1", imx8m_vpu_g1_irq }, + { "g2", NULL /* TODO: imx8m_vpu_g2_irq */ }, +}; + +static const char * const imx8mq_reg_names[] = { "g1", "g2", "ctrl" }; + +const struct hantro_variant imx8mq_vpu_variant = { + .dec_fmts = imx8m_vpu_dec_fmts, + .num_dec_fmts = ARRAY_SIZE(imx8m_vpu_dec_fmts), + .codec = HANTRO_MPEG2_DECODER, + .codec_ops = imx8mq_vpu_codec_ops, + .init = imx8mq_vpu_hw_init, + .runtime_resume = imx8mq_runtime_resume, + .irqs = imx8mq_irqs, + .num_irqs = ARRAY_SIZE(imx8mq_irqs), + .num_irqs = 2, + .clk_names = { "g1", "g2", "bus" }, + .num_clocks = 3, + .reg_names = imx8mq_reg_names, + .num_regs = ARRAY_SIZE(imx8mq_reg_names) +}; -- 2.20.1
