Hi Sakari,
Thank you for the patch.
(CC'ing linux-omap and Tony)
On Saturday 07 March 2015 23:41:07 Sakari Ailus wrote:
> The syscon register isn't part of the ISP, use it through the syscom driver
> regmap instead. The syscom block is considered to be from 343x on ISP
> revision 2.0 whereas 15.0 is assumed to have 3630 syscon.
>
> Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
> ---
> arch/arm/boot/dts/omap3.dtsi | 2 +-
> arch/arm/mach-omap2/devices.c | 10 ----------
> drivers/media/platform/omap3isp/isp.c | 19 +++++++++++++++----
> drivers/media/platform/omap3isp/isp.h | 19 +++++++++++++++++--
> drivers/media/platform/omap3isp/ispcsiphy.c | 20 +++++++++-----------
You might be asked to split the patch into two, let's see what Tony says.
> 5 files changed, 42 insertions(+), 28 deletions(-)
>
> diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi
> index 01b7111..fe0b293 100644
> --- a/arch/arm/boot/dts/omap3.dtsi
> +++ b/arch/arm/boot/dts/omap3.dtsi
> @@ -183,7 +183,7 @@
>
> omap3_scm_general: tisyscon@48002270 {
> compatible = "syscon";
> - reg = <0x48002270 0x2f0>;
> + reg = <0x48002270 0x2f4>;
> };
>
> pbias_regulator: pbias_regulator {
> diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
> index 1afb50d..e945957 100644
> --- a/arch/arm/mach-omap2/devices.c
> +++ b/arch/arm/mach-omap2/devices.c
> @@ -143,16 +143,6 @@ static struct resource omap3isp_resources[] = {
> .flags = IORESOURCE_MEM,
> },
> {
> - .start = OMAP343X_CTRL_BASE + OMAP343X_CONTROL_CSIRXFE,
> - .end = OMAP343X_CTRL_BASE + OMAP343X_CONTROL_CSIRXFE
> + 3,
> - .flags = IORESOURCE_MEM,
> - },
> - {
> - .start = OMAP343X_CTRL_BASE +
> OMAP3630_CONTROL_CAMERA_PHY_CTRL,
> - .end = OMAP343X_CTRL_BASE +
> OMAP3630_CONTROL_CAMERA_PHY_CTRL + 3,
> - .flags = IORESOURCE_MEM,
> - },
> - {
> .start = 24 + OMAP_INTC_START,
> .flags = IORESOURCE_IRQ,
> }
> diff --git a/drivers/media/platform/omap3isp/isp.c
> b/drivers/media/platform/omap3isp/isp.c index 68d7edfc..4ff4bbd 100644
> --- a/drivers/media/platform/omap3isp/isp.c
> +++ b/drivers/media/platform/omap3isp/isp.c
> @@ -51,6 +51,7 @@
> #include <linux/dma-mapping.h>
> #include <linux/i2c.h>
> #include <linux/interrupt.h>
> +#include <linux/mfd/syscon.h>
> #include <linux/module.h>
> #include <linux/omap-iommu.h>
> #include <linux/platform_device.h>
> @@ -94,8 +95,9 @@ static const struct isp_res_mapping isp_res_maps[] = {
> 1 << OMAP3_ISP_IOMEM_RESZ |
> 1 << OMAP3_ISP_IOMEM_SBL |
> 1 << OMAP3_ISP_IOMEM_CSI2A_REGS1 |
> - 1 << OMAP3_ISP_IOMEM_CSIPHY2 |
> - 1 << OMAP3_ISP_IOMEM_343X_CONTROL_CSIRXFE,
> + 1 << OMAP3_ISP_IOMEM_CSIPHY2,
> + .syscon_offset = 0xdc,
> + .phy_type = ISP_PHY_TYPE_3430,
> },
> {
> .isp_rev = ISP_REVISION_15_0,
> @@ -112,8 +114,9 @@ static const struct isp_res_mapping isp_res_maps[] = {
> 1 << OMAP3_ISP_IOMEM_CSI2A_REGS2 |
> 1 << OMAP3_ISP_IOMEM_CSI2C_REGS1 |
> 1 << OMAP3_ISP_IOMEM_CSIPHY1 |
> - 1 << OMAP3_ISP_IOMEM_CSI2C_REGS2 |
> - 1 << OMAP3_ISP_IOMEM_3630_CONTROL_CAMERA_PHY_CTRL,
> + 1 << OMAP3_ISP_IOMEM_CSI2C_REGS2,
> + .syscon_offset = 0x2f0,
> + .phy_type = ISP_PHY_TYPE_3630,
> },
> };
>
> @@ -2352,6 +2355,14 @@ static int isp_probe(struct platform_device *pdev)
> }
> }
>
> + isp->syscon = syscon_regmap_lookup_by_pdevname("syscon.0");
> + isp->syscon_offset = isp_res_maps[m].syscon_offset;
> + isp->phy_type = isp_res_maps[m].phy_type;
You could move those two lines after the error check to keep the check closer
to the source of error.
Apart from that,
Acked-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> + if (IS_ERR(isp->syscon)) {
> + ret = PTR_ERR(isp->syscon);
> + goto error_isp;
> + }
> +
> /* IOMMU */
> ret = isp_attach_iommu(isp);
> if (ret < 0) {
> diff --git a/drivers/media/platform/omap3isp/isp.h
> b/drivers/media/platform/omap3isp/isp.h index 9535524..03d2129 100644
> --- a/drivers/media/platform/omap3isp/isp.h
> +++ b/drivers/media/platform/omap3isp/isp.h
> @@ -59,8 +59,6 @@ enum isp_mem_resources {
> OMAP3_ISP_IOMEM_CSI2C_REGS1,
> OMAP3_ISP_IOMEM_CSIPHY1,
> OMAP3_ISP_IOMEM_CSI2C_REGS2,
> - OMAP3_ISP_IOMEM_343X_CONTROL_CSIRXFE,
> - OMAP3_ISP_IOMEM_3630_CONTROL_CAMERA_PHY_CTRL,
> OMAP3_ISP_IOMEM_LAST
> };
>
> @@ -93,14 +91,25 @@ enum isp_subclk_resource {
> /* ISP2P: OMAP 36xx */
> #define ISP_REVISION_15_0 0xF0
>
> +#define ISP_PHY_TYPE_3430 0
> +#define ISP_PHY_TYPE_3630 1
> +
> +struct regmap;
> +
> /*
> * struct isp_res_mapping - Map ISP io resources to ISP revision.
> * @isp_rev: ISP_REVISION_x_x
> * @map: bitmap for enum isp_mem_resources
> + * @syscon_offset: offset of the syscon register for 343x / 3630
> + * (CONTROL_CSIRXFE / CONTROL_CAMERA_PHY_CTRL, respectively)
> + * from the syscon base address
> + * @phy_type: ISP_PHY_TYPE_{3430,3630}
> */
> struct isp_res_mapping {
> u32 isp_rev;
> u32 map;
> + u32 syscon_offset;
> + u32 phy_type;
> };
>
> /*
> @@ -140,6 +149,9 @@ struct isp_xclk {
> * regions.
> * @mmio_hist_base_phys: Physical L4 bus address for ISP hist block
> register
> * region.
> + * @syscon: Regmap for the syscon register space
> + * @syscon_offset: Offset of the CSIPHY control register in syscon
> + * @phy_type: ISP_PHY_TYPE_{3430,3630}
> * @mapping: IOMMU mapping
> * @stat_lock: Spinlock for handling statistics
> * @isp_mutex: Mutex for serializing requests to ISP.
> @@ -176,6 +188,9 @@ struct isp_device {
>
> void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST];
> unsigned long mmio_hist_base_phys;
> + struct regmap *syscon;
> + u32 syscon_offset;
> + u32 phy_type;
>
> struct dma_iommu_mapping *mapping;
>
> diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c
> b/drivers/media/platform/omap3isp/ispcsiphy.c index 4486e9f..d91dde1 100644
> --- a/drivers/media/platform/omap3isp/ispcsiphy.c
> +++ b/drivers/media/platform/omap3isp/ispcsiphy.c
> @@ -16,6 +16,7 @@
>
> #include <linux/delay.h>
> #include <linux/device.h>
> +#include <linux/regmap.h>
> #include <linux/regulator/consumer.h>
>
> #include "isp.h"
> @@ -26,10 +27,11 @@ static void csiphy_routing_cfg_3630(struct isp_csiphy
> *phy, enum isp_interface_type iface,
> bool ccp2_strobe)
> {
> - u32 reg = isp_reg_readl(
> - phy->isp, OMAP3_ISP_IOMEM_3630_CONTROL_CAMERA_PHY_CTRL, 0);
> + u32 reg;
> u32 shift, mode;
>
> + regmap_read(phy->isp->syscon, phy->isp->syscon_offset, ®);
> +
> switch (iface) {
> default:
> /* Should not happen in practice, but let's keep the compiler happy. */
> @@ -63,8 +65,7 @@ static void csiphy_routing_cfg_3630(struct isp_csiphy
> *phy, reg &= ~(OMAP3630_CONTROL_CAMERA_PHY_CTRL_CAMMODE_MASK << shift); reg
> |= mode << shift;
>
> - isp_reg_writel(phy->isp, reg,
> - OMAP3_ISP_IOMEM_3630_CONTROL_CAMERA_PHY_CTRL, 0);
> + regmap_write(phy->isp->syscon, phy->isp->syscon_offset, reg);
> }
>
> static void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool
> on, @@ -78,16 +79,14 @@ static void csiphy_routing_cfg_3430(struct
> isp_csiphy *phy, u32 iface, bool on, return;
>
> if (!on) {
> - isp_reg_writel(phy->isp, 0,
> - OMAP3_ISP_IOMEM_343X_CONTROL_CSIRXFE, 0);
> + regmap_write(phy->isp->syscon, phy->isp->syscon_offset, 0);
> return;
> }
>
> if (ccp2_strobe)
> csirxfe |= OMAP343X_CONTROL_CSIRXFE_SELFORM;
>
> - isp_reg_writel(phy->isp, csirxfe,
> - OMAP3_ISP_IOMEM_343X_CONTROL_CSIRXFE, 0);
> + regmap_write(phy->isp->syscon, phy->isp->syscon_offset, csirxfe);
> }
>
> /*
> @@ -106,10 +105,9 @@ static void csiphy_routing_cfg(struct isp_csiphy *phy,
> enum isp_interface_type iface, bool on,
> bool ccp2_strobe)
> {
> - if (phy->isp->mmio_base[OMAP3_ISP_IOMEM_3630_CONTROL_CAMERA_PHY_CTRL]
> - && on)
> + if (phy->isp->phy_type == ISP_PHY_TYPE_3630 && on)
> return csiphy_routing_cfg_3630(phy, iface, ccp2_strobe);
> - if (phy->isp->mmio_base[OMAP3_ISP_IOMEM_343X_CONTROL_CSIRXFE])
> + if (phy->isp->phy_type == ISP_PHY_TYPE_3430)
> return csiphy_routing_cfg_3430(phy, iface, on, ccp2_strobe);
> }
--
Regards,
Laurent Pinchart
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