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Message-ID: <CACKLOr296rVjv3ECL_WyV2eS7OHEKFzBomz=i-6dJWOvJQ9pkQ@mail.gmail.com>
Date: Fri, 23 Nov 2012 12:28:28 +0100
From: javier Martin <javier.martin@...ta-silicon.com>
To: Fabio Estevam <fabio.estevam@...escale.com>
Cc: kernel@...gutronix.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/3] ARM: imx27_visstrim_m10: Do not reserve DMA pools
on board file
Hi Fabio,
have you actually tested CMA with mx2_camera and coda drivers in i.MX27?
On 22 November 2012 17:12, Fabio Estevam <fabio.estevam@...escale.com> wrote:
> Do not reserve DMA pools on board file as this can be done via CMA.
>
> The motivation for doing this is to allow to register the VPU driver via a common
> SoC file instead of per board.
>
> Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>
> ---
> This applies against 20121115 linux-next.
>
> Changes since v3:
> - Remove all the DMA pools
> Changes since v2:
> - No changes. Newly introduced on this series
> arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 66 ++-------------------------
> 1 file changed, 3 insertions(+), 63 deletions(-)
>
> diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
> index b744226..914b2f8 100644
> --- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
> +++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
> @@ -30,7 +30,6 @@
> #include <linux/input.h>
> #include <linux/gpio.h>
> #include <linux/delay.h>
> -#include <linux/dma-mapping.h>
> #include <linux/leds.h>
> #include <linux/platform_data/asoc-mx27vis.h>
> #include <media/soc_camera.h>
> @@ -39,7 +38,6 @@
> #include <asm/mach/arch.h>
> #include <asm/mach/time.h>
> #include <asm/system_info.h>
> -#include <asm/memblock.h>
>
> #include "common.h"
> #include "devices-imx27.h"
> @@ -234,14 +232,8 @@ static struct mx2_camera_platform_data visstrim_camera = {
> .clk = 100000,
> };
>
> -static phys_addr_t mx2_camera_base __initdata;
> -#define MX2_CAMERA_BUF_SIZE SZ_8M
> -
> static void __init visstrim_camera_init(void)
> {
> - struct platform_device *pdev;
> - int dma;
> -
> gpio_set_value(TVP5150_PWDN, 1);
> ndelay(1);
> gpio_set_value(TVP5150_RSTN, 0);
> @@ -249,23 +241,7 @@ static void __init visstrim_camera_init(void)
> gpio_set_value(TVP5150_RSTN, 1);
> ndelay(200000);
>
> - pdev = imx27_add_mx2_camera(&visstrim_camera);
> - if (IS_ERR(pdev))
> - return;
> -
> - dma = dma_declare_coherent_memory(&pdev->dev,
> - mx2_camera_base, mx2_camera_base,
> - MX2_CAMERA_BUF_SIZE,
> - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
> - if (!(dma & DMA_MEMORY_MAP))
> - return;
> -}
> -
> -static void __init visstrim_reserve(void)
> -{
> - /* reserve 4 MiB for mx2-camera */
> - mx2_camera_base = arm_memblock_steal(3 * MX2_CAMERA_BUF_SIZE,
> - MX2_CAMERA_BUF_SIZE);
> + imx27_add_mx2_camera(&visstrim_camera);
> }
>
> /* GPIOs used as events for applications */
> @@ -434,47 +410,12 @@ static const struct imx_ssi_platform_data visstrim_m10_ssi_pdata __initconst = {
> .flags = IMX_SSI_DMA | IMX_SSI_SYN,
> };
>
> -/* coda */
> -
> -static void __init visstrim_coda_init(void)
> -{
> - struct platform_device *pdev;
> - int dma;
> -
> - pdev = imx27_add_coda();
> - dma = dma_declare_coherent_memory(&pdev->dev,
> - mx2_camera_base + MX2_CAMERA_BUF_SIZE,
> - mx2_camera_base + MX2_CAMERA_BUF_SIZE,
> - MX2_CAMERA_BUF_SIZE,
> - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
> - if (!(dma & DMA_MEMORY_MAP))
> - return;
> -}
> -
> /* DMA deinterlace */
> static struct platform_device visstrim_deinterlace = {
> .name = "m2m-deinterlace",
> .id = 0,
> };
>
> -static void __init visstrim_deinterlace_init(void)
> -{
> - int ret = -ENOMEM;
> - struct platform_device *pdev = &visstrim_deinterlace;
> - int dma;
> -
> - ret = platform_device_register(pdev);
> -
> - dma = dma_declare_coherent_memory(&pdev->dev,
> - mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE,
> - mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE,
> - MX2_CAMERA_BUF_SIZE,
> - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
> - if (!(dma & DMA_MEMORY_MAP))
> - return;
> -}
> -
> -
> /* Audio */
> static const struct snd_mx27vis_platform_data snd_mx27vis_pdata __initconst = {
> .amp_gain0_gpio = AMP_GAIN_0,
> @@ -546,9 +487,9 @@ static void __init visstrim_m10_board_init(void)
> platform_device_register_resndata(NULL, "soc-camera-pdrv", 0, NULL, 0,
> &iclink_tvp5150, sizeof(iclink_tvp5150));
> gpio_led_register_device(0, &visstrim_m10_led_data);
> - visstrim_deinterlace_init();
> + platform_device_register(&visstrim_deinterlace);
> visstrim_camera_init();
> - visstrim_coda_init();
> + imx27_add_coda();
> }
>
> static void __init visstrim_m10_timer_init(void)
> @@ -562,7 +503,6 @@ static struct sys_timer visstrim_m10_timer = {
>
> MACHINE_START(IMX27_VISSTRIM_M10, "Vista Silicon Visstrim_M10")
> .atag_offset = 0x100,
> - .reserve = visstrim_reserve,
> .map_io = mx27_map_io,
> .init_early = imx27_init_early,
> .init_irq = mx27_init_irq,
> --
> 1.7.9.5
>
>
--
Javier Martin
Vista Silicon S.L.
CDTUC - FASE C - Oficina S-345
Avda de los Castros s/n
39005- Santander. Cantabria. Spain
+34 942 25 32 60
www.vista-silicon.com
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