From: kgene.kim@samsung•com (Kukjin Kim)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCHv3 1/4] drm/exynos: add device tree support for rotator
Date: Mon, 19 Aug 2013 04:21:09 +0900 [thread overview]
Message-ID: <52111EA5.5000800@samsung.com> (raw)
In-Reply-To: <1376370779-26930-2-git-send-email-chanho61.park@samsung.com>
On 08/13/13 14:12, Chanho Park wrote:
> The exynos4 platform is only dt-based since 3.10, we should convert driver data
> and ids to dt-based parsing methods. The rotator driver has a limit table to get
> size limit of input picture. Each SoCs has slightly different limit value
> compared with any others.
> For example, exynos4210's max_size of RGB888 is 16k x 16k. But, others have
> 8k x 8k. Another example the exynos5250 should have multiple of 2 pixel size
> for its X/Y axis. Thus, we should keep different tables for each of them.
> This patch also includes desciptions of each nodes for the rotator and specifies
> a example how to bind it.
>
> Signed-off-by: Chanho Park<chanho61.park@samsung•com>
> Cc: Inki Dae<inki.dae@samsung•com>
Inki, do you OK on this? If so, let me take this whole series into the
samsung tree.
Thanks,
Kukjin
> Signed-off-by: Kyungmin Park<kyungmin.park@samsung•com>
> ---
> .../devicetree/bindings/gpu/samsung-rotator.txt | 27 +++++
> drivers/gpu/drm/exynos/exynos_drm_rotator.c | 108 +++++++++++++++-----
> 2 files changed, 107 insertions(+), 28 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/gpu/samsung-rotator.txt
>
> diff --git a/Documentation/devicetree/bindings/gpu/samsung-rotator.txt b/Documentation/devicetree/bindings/gpu/samsung-rotator.txt
> new file mode 100644
> index 0000000..82cd1ed
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpu/samsung-rotator.txt
> @@ -0,0 +1,27 @@
> +* Samsung Image Rotator
> +
> +Required properties:
> + - compatible : value should be one of the following:
> + (a) "samsung,exynos4210-rotator" for Rotator IP in Exynos4210
> + (b) "samsung,exynos4212-rotator" for Rotator IP in Exynos4212/4412
> + (c) "samsung,exynos5250-rotator" for Rotator IP in Exynos5250
> +
> + - reg : Physical base address of the IP registers and length of memory
> + mapped region.
> +
> + - interrupts : Interrupt specifier for rotator interrupt, according to format
> + specific to interrupt parent.
> +
> + - clocks : Clock specifier for rotator clock, according to generic clock
> + bindings. (See Documentation/devicetree/bindings/clock/exynos*.txt)
> +
> + - clock-names : Names of clocks. For exynos rotator, it should be "rotator".
> +
> +Example:
> + rotator at 12810000 {
> + compatible = "samsung,exynos4210-rotator";
> + reg =<0x12810000 0x1000>;
> + interrupts =<0 83 0>;
> + clocks =<&clock 278>;
> + clock-names = "rotator";
> + };
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c b/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> index 427640a..0485aea5 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c
> @@ -632,21 +632,98 @@ static int rotator_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd)
> return 0;
> }
>
> +static struct rot_limit_table rot_limit_tbl_4210 = {
> + .ycbcr420_2p = {
> + .min_w = 32,
> + .min_h = 32,
> + .max_w = SZ_64K,
> + .max_h = SZ_64K,
> + .align = 3,
> + },
> + .rgb888 = {
> + .min_w = 8,
> + .min_h = 8,
> + .max_w = SZ_16K,
> + .max_h = SZ_16K,
> + .align = 2,
> + },
> +};
> +
> +static struct rot_limit_table rot_limit_tbl_4x12 = {
> + .ycbcr420_2p = {
> + .min_w = 32,
> + .min_h = 32,
> + .max_w = SZ_32K,
> + .max_h = SZ_32K,
> + .align = 3,
> + },
> + .rgb888 = {
> + .min_w = 8,
> + .min_h = 8,
> + .max_w = SZ_8K,
> + .max_h = SZ_8K,
> + .align = 2,
> + },
> +};
> +
> +static struct rot_limit_table rot_limit_tbl_5250 = {
> + .ycbcr420_2p = {
> + .min_w = 32,
> + .min_h = 32,
> + .max_w = SZ_32K,
> + .max_h = SZ_32K,
> + .align = 3,
> + },
> + .rgb888 = {
> + .min_w = 8,
> + .min_h = 8,
> + .max_w = SZ_8K,
> + .max_h = SZ_8K,
> + .align = 1,
> + },
> +};
> +
> +static const struct of_device_id exynos_rotator_match[] = {
> + {
> + .compatible = "samsung,exynos4210-rotator",
> + .data =&rot_limit_tbl_4210,
> + },
> + {
> + .compatible = "samsung,exynos4212-rotator",
> + .data =&rot_limit_tbl_4x12,
> + },
> + {
> + .compatible = "samsung,exynos5250-rotator",
> + .data =&rot_limit_tbl_5250,
> + },
> + {},
> +};
> +
> static int rotator_probe(struct platform_device *pdev)
> {
> struct device *dev =&pdev->dev;
> struct rot_context *rot;
> struct exynos_drm_ippdrv *ippdrv;
> + const struct of_device_id *match;
> int ret;
>
> + if (!dev->of_node) {
> + dev_err(dev, "cannot find of_node.\n");
> + return -ENODEV;
> + }
> +
> rot = devm_kzalloc(dev, sizeof(*rot), GFP_KERNEL);
> if (!rot) {
> dev_err(dev, "failed to allocate rot\n");
> return -ENOMEM;
> }
>
> - rot->limit_tbl = (struct rot_limit_table *)
> - platform_get_device_id(pdev)->driver_data;
> + match = of_match_node(exynos_rotator_match, dev->of_node);
> + if (!match) {
> + dev_err(dev, "failed to match node\n");
> + return -ENODEV;
> + }
> + rot->limit_tbl = (struct rot_limit_table *)match->data;
>
> rot->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> rot->regs = devm_ioremap_resource(dev, rot->regs_res);
> @@ -718,31 +795,6 @@ static int rotator_remove(struct platform_device *pdev)
> return 0;
> }
>
> -static struct rot_limit_table rot_limit_tbl = {
> - .ycbcr420_2p = {
> - .min_w = 32,
> - .min_h = 32,
> - .max_w = SZ_32K,
> - .max_h = SZ_32K,
> - .align = 3,
> - },
> - .rgb888 = {
> - .min_w = 8,
> - .min_h = 8,
> - .max_w = SZ_8K,
> - .max_h = SZ_8K,
> - .align = 2,
> - },
> -};
> -
> -static struct platform_device_id rotator_driver_ids[] = {
> - {
> - .name = "exynos-rot",
> - .driver_data = (unsigned long)&rot_limit_tbl,
> - },
> - {},
> -};
> -
> static int rotator_clk_crtl(struct rot_context *rot, bool enable)
> {
> if (enable) {
> @@ -804,10 +856,10 @@ static const struct dev_pm_ops rotator_pm_ops = {
> struct platform_driver rotator_driver = {
> .probe = rotator_probe,
> .remove = rotator_remove,
> - .id_table = rotator_driver_ids,
> .driver = {
> .name = "exynos-rot",
> .owner = THIS_MODULE,
> .pm =&rotator_pm_ops,
> + .of_match_table = exynos_rotator_match,
> },
> };
next prev parent reply other threads:[~2013-08-18 19:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-13 5:12 [PATCHv3 0/4] device tree support for exynos rotator Chanho Park
2013-08-13 5:12 ` [PATCHv3 1/4] drm/exynos: add device tree support for rotator Chanho Park
2013-08-18 19:21 ` Kukjin Kim [this message]
2013-08-13 5:12 ` [PATCHv3 2/4] ARM: dts: Add rotator node for exynos4210 Chanho Park
2013-08-13 5:12 ` [PATCHv3 3/4] ARM: dts: Add rotator node for exynos4x12 Chanho Park
2013-08-13 5:12 ` [PATCHv3 4/4] ARM: dts: Add rotator node for exynos5250 Chanho Park
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