From: javier.martin@vista-silicon.com (Javier Martin)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] Visstrim SM10: Use mo_version to decide board video mode.
Date: Fri, 3 Aug 2012 14:08:23 +0200 [thread overview]
Message-ID: <1343995703-13578-1-git-send-email-javier.martin@vista-silicon.com> (raw)
If the mother board version number is odd, emmaprp() for
format conversion + UVC camera will be used.
Otherwise mx2_camera and m2m-deinterlacer will be registered.
For both cases Coda video codec is registered.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
---
Changes since v1:
- Add error message to emmaprp init function.
---
arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 54 ++++++++++++++++++++++++---
1 file changed, 49 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
index 176533e..dbb344a 100644
--- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
@@ -49,6 +49,10 @@
#define OTG_PHY_CS_GPIO (GPIO_PORTF + 17)
#define SDHC1_IRQ IRQ_GPIOB(25)
+#define VERSION_MASK 0x7
+#define MOTHERBOARD_SHIFT 4
+#define EXPBOARD_SHIFT 0
+
#define MOTHERBOARD_BIT2 (GPIO_PORTD + 31)
#define MOTHERBOARD_BIT1 (GPIO_PORTD + 30)
#define MOTHERBOARD_BIT0 (GPIO_PORTD + 29)
@@ -205,7 +209,7 @@ static struct mx2_camera_platform_data visstrim_camera = {
static phys_addr_t mx2_camera_base __initdata;
#define MX2_CAMERA_BUF_SIZE SZ_8M
-static void __init visstrim_camera_init(void)
+static void __init visstrim_analog_camera_init(void)
{
struct platform_device *pdev;
int dma;
@@ -442,6 +446,29 @@ static void __init visstrim_deinterlace_init(void)
return;
}
+/* Emma-PrP for format conversion */
+static void __init visstrim_emmaprp_init(void)
+{
+ struct platform_device *pdev;
+ int dma;
+
+ pdev = imx27_add_mx2_emmaprp();
+ if (IS_ERR(pdev))
+ return;
+
+ /*
+ * Use the same memory area as the analog camera since both
+ * devices are, by nature, exclusive.
+ */
+ 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)) {
+ pr_err("Failed to declare memory for emmaprp\n");
+ return;
+ }
+}
static void __init visstrim_m10_revision(void)
{
@@ -467,13 +494,14 @@ static void __init visstrim_m10_revision(void)
mo_version |= !gpio_get_value(MOTHERBOARD_BIT0);
system_rev = 0x27000;
- system_rev |= (mo_version << 4);
- system_rev |= exp_version;
+ system_rev |= (mo_version << MOTHERBOARD_SHIFT);
+ system_rev |= (exp_version << EXPBOARD_SHIFT);
}
static void __init visstrim_m10_board_init(void)
{
int ret;
+ int mo_version;
imx27_soc_init();
visstrim_m10_revision();
@@ -505,8 +533,24 @@ 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();
- visstrim_camera_init();
+
+ /* Use mother board version to decide what video devices we shall use */
+ mo_version = (system_rev >> MOTHERBOARD_SHIFT) & VERSION_MASK;
+ if (mo_version & 0x1) {
+ visstrim_emmaprp_init();
+
+ /*
+ * Despite not being used, tvp5150 must be
+ * powered on to avoid I2C problems. To minimize
+ * power consupmtion keep reset enabled.
+ */
+ gpio_set_value(TVP5150_PWDN, 1);
+ ndelay(1);
+ gpio_set_value(TVP5150_RSTN, 0);
+ } else {
+ visstrim_deinterlace_init();
+ visstrim_analog_camera_init();
+ }
visstrim_coda_init();
}
--
1.7.9.5
next reply other threads:[~2012-08-03 12:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 12:08 Javier Martin [this message]
2012-08-03 14:06 ` [PATCH v2] Visstrim SM10: Use mo_version to decide board video mode Sascha Hauer
2012-08-03 15:37 ` Baruch Siach
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