On Wed, 29 May 2019 11:54:20 +0200
Philipp Zabel <p.za...@pengutronix.de> wrote:
> Add support for multiple register ranges with SoC specific names.
>
> Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
> ---
> drivers/staging/media/hantro/hantro.h | 7 ++++++-
> drivers/staging/media/hantro/hantro_drv.c | 25 +++++++++++++++++------
> 2 files changed, 25 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/staging/media/hantro/hantro.h
> b/drivers/staging/media/hantro/hantro.h
> index 6b90fe48bcdf..b796867808d5 100644
> --- a/drivers/staging/media/hantro/hantro.h
> +++ b/drivers/staging/media/hantro/hantro.h
> @@ -27,6 +27,7 @@
>
> #define HANTRO_MAX_CLOCKS 4
> #define HANTRO_MAX_IRQS 3
> +#define HANTRO_MAX_REG_RANGES 4
>
> #define MPEG2_MB_DIM 16
> #define MPEG2_MB_WIDTH(w) DIV_ROUND_UP(w, MPEG2_MB_DIM)
> @@ -63,6 +64,8 @@ struct hantro_codec_ops;
> * @num_irqs: number of irqs in the arrays
> * @clk_names: array of clock names
> * @num_clocks: number of clocks in the array
> + * @reg_names: array of register range names
> + * @num_regs: number of register range names in the
> array
> */
> struct hantro_variant {
> unsigned int enc_offset;
> @@ -80,6 +83,8 @@ struct hantro_variant {
> int num_irqs;
> const char *clk_names[HANTRO_MAX_CLOCKS];
> int num_clocks;
> + const char *reg_names[HANTRO_MAX_REG_RANGES];
> + int num_regs;
> };
>
> /**
> @@ -170,7 +175,7 @@ struct hantro_dev {
> struct platform_device *pdev;
> struct device *dev;
> struct clk_bulk_data clocks[HANTRO_MAX_CLOCKS];
> - void __iomem *base;
> + void __iomem *base[HANTRO_MAX_REG_RANGES];
Same comment as for the irq stuff.
> void __iomem *enc_base;
> void __iomem *dec_base;
>
> diff --git a/drivers/staging/media/hantro/hantro_drv.c
> b/drivers/staging/media/hantro/hantro_drv.c
> index f677b40bcd2d..bd02b27258e3 100644
> --- a/drivers/staging/media/hantro/hantro_drv.c
> +++ b/drivers/staging/media/hantro/hantro_drv.c
> @@ -692,12 +692,25 @@ static int hantro_probe(struct platform_device *pdev)
> if (ret)
> return ret;
>
> - res = platform_get_resource(vpu->pdev, IORESOURCE_MEM, 0);
> - vpu->base = devm_ioremap_resource(vpu->dev, res);
> - if (IS_ERR(vpu->base))
> - return PTR_ERR(vpu->base);
> - vpu->enc_base = vpu->base + vpu->variant->enc_offset;
> - vpu->dec_base = vpu->base + vpu->variant->dec_offset;
> + if (vpu->variant->num_regs) {
> + for (i = 0; i < vpu->variant->num_regs; i++) {
> + const char *reg_name = vpu->variant->reg_names[i];
> +
> + res = platform_get_resource_byname(vpu->pdev,
> + IORESOURCE_MEM,
> + reg_name);
> + vpu->base[i] = devm_ioremap_resource(vpu->dev, res);
> + if (IS_ERR(vpu->base[i]))
> + return PTR_ERR(vpu->base[i]);
> + }
> + } else {
> + res = platform_get_resource(vpu->pdev, IORESOURCE_MEM, 0);
> + vpu->base[0] = devm_ioremap_resource(vpu->dev, res);
> + if (IS_ERR(vpu->base[0]))
> + return PTR_ERR(vpu->base[0]);
> + vpu->enc_base = vpu->base[0] + vpu->variant->enc_offset;
> + vpu->dec_base = vpu->base[0] + vpu->variant->dec_offset;
I see ->dec_based is assigned in ->hw_init() in patch 8, so maybe it's
better to have the same workflow for rk variants: assign
vpu->{dec,enc}_base in ->hw_init() and set ->num_regs to 1 (plus a
fallback to platform_get_resource() instead of
platform_get_resource_byname() when ->reg_names[0] == NULL).
> + }
>
> ret = dma_set_coherent_mask(vpu->dev, DMA_BIT_MASK(32));
> if (ret) {
