From 7e1db599b99655af2b2cbeaf14aab1a07d84fc6d Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Sat, 4 Mar 2017 04:52:40 -0500 Subject: [PATCH] media: omap3isp: csiphy: Don't assume the CSI receiver is a CSI2 module The CSI PHY is associated with a CSI receiver. The code assumes this receiver is a CSI2 module and relies on the CSI2 module object heavily to access the ISP or pipeline objects. However, the receiver could also be a CSI1/CCP2 module. Pass a new CSI receiver entity pointer to the CSI PHY acquire function, and replace all hardcoded usage of the CSI2 module with that CSI receiver entity. Signed-off-by: Sakari Ailus Tested-by: Laurent Pinchart # on Beagleboard-xM + MPT9P031 Acked-by: Pavel Machek Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/ispccp2.c | 2 +- drivers/media/platform/omap3isp/ispcsi2.c | 4 +-- drivers/media/platform/omap3isp/ispcsiphy.c | 45 +++++++++++++---------------- drivers/media/platform/omap3isp/ispcsiphy.h | 6 ++-- 4 files changed, 27 insertions(+), 30 deletions(-) diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 47210b1..3db8df0 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -841,7 +841,7 @@ static int ccp2_s_stream(struct v4l2_subdev *sd, int enable) switch (enable) { case ISP_PIPELINE_STREAM_CONTINUOUS: if (ccp2->phy) { - ret = omap3isp_csiphy_acquire(ccp2->phy); + ret = omap3isp_csiphy_acquire(ccp2->phy, &sd->entity); if (ret < 0) return ret; } diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index 7dae2fe..3ec37fe 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -490,7 +490,7 @@ int omap3isp_csi2_reset(struct isp_csi2_device *csi2) if (!csi2->available) return -ENODEV; - if (csi2->phy->phy_in_use) + if (csi2->phy->entity) return -EBUSY; isp_reg_set(isp, csi2->regs1, ISPCSI2_SYSCONFIG, @@ -1053,7 +1053,7 @@ static int csi2_set_stream(struct v4l2_subdev *sd, int enable) switch (enable) { case ISP_PIPELINE_STREAM_CONTINUOUS: - if (omap3isp_csiphy_acquire(csi2->phy) < 0) + if (omap3isp_csiphy_acquire(csi2->phy, &sd->entity) < 0) return -ENODEV; if (csi2->output & CSI2_OUTPUT_MEMORY) omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI2A_WRITE); diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c b/drivers/media/platform/omap3isp/ispcsiphy.c index 2028bb5..ed1eb99 100644 --- a/drivers/media/platform/omap3isp/ispcsiphy.c +++ b/drivers/media/platform/omap3isp/ispcsiphy.c @@ -164,22 +164,17 @@ static int csiphy_set_power(struct isp_csiphy *phy, u32 power) static int omap3isp_csiphy_config(struct isp_csiphy *phy) { - struct isp_csi2_device *csi2 = phy->csi2; - struct isp_pipeline *pipe = to_isp_pipeline(&csi2->subdev.entity); - struct isp_bus_cfg *buscfg = pipe->external->host_priv; + struct isp_pipeline *pipe = to_isp_pipeline(phy->entity); + struct isp_async_subdev *isd = + container_of(pipe->external->asd, struct isp_async_subdev, asd); + struct isp_bus_cfg *buscfg = pipe->external->host_priv ? + pipe->external->host_priv : &isd->bus; struct isp_csiphy_lanes_cfg *lanes; int csi2_ddrclk_khz; unsigned int num_data_lanes, used_lanes = 0; unsigned int i; u32 reg; - if (!buscfg) { - struct isp_async_subdev *isd = - container_of(pipe->external->asd, - struct isp_async_subdev, asd); - buscfg = &isd->bus; - } - if (buscfg->interface == ISP_INTERFACE_CCP2B_PHY1 || buscfg->interface == ISP_INTERFACE_CCP2B_PHY2) { lanes = &buscfg->bus.ccp2.lanecfg; @@ -222,7 +217,7 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy) csi2_ddrclk_khz = pipe->external_rate / 1000 / (2 * hweight32(used_lanes)) * pipe->external_width; - reg = isp_reg_readl(csi2->isp, phy->phy_regs, ISPCSIPHY_REG0); + reg = isp_reg_readl(phy->isp, phy->phy_regs, ISPCSIPHY_REG0); reg &= ~(ISPCSIPHY_REG0_THS_TERM_MASK | ISPCSIPHY_REG0_THS_SETTLE_MASK); @@ -233,9 +228,9 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy) reg |= (DIV_ROUND_UP(90 * csi2_ddrclk_khz, 1000000) + 3) << ISPCSIPHY_REG0_THS_SETTLE_SHIFT; - isp_reg_writel(csi2->isp, reg, phy->phy_regs, ISPCSIPHY_REG0); + isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG0); - reg = isp_reg_readl(csi2->isp, phy->phy_regs, ISPCSIPHY_REG1); + reg = isp_reg_readl(phy->isp, phy->phy_regs, ISPCSIPHY_REG1); reg &= ~(ISPCSIPHY_REG1_TCLK_TERM_MASK | ISPCSIPHY_REG1_TCLK_MISS_MASK | @@ -244,10 +239,10 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy) reg |= TCLK_MISS << ISPCSIPHY_REG1_TCLK_MISS_SHIFT; reg |= TCLK_SETTLE << ISPCSIPHY_REG1_TCLK_SETTLE_SHIFT; - isp_reg_writel(csi2->isp, reg, phy->phy_regs, ISPCSIPHY_REG1); + isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG1); /* DPHY lane configuration */ - reg = isp_reg_readl(csi2->isp, phy->cfg_regs, ISPCSI2_PHY_CFG); + reg = isp_reg_readl(phy->isp, phy->cfg_regs, ISPCSI2_PHY_CFG); for (i = 0; i < num_data_lanes; i++) { reg &= ~(ISPCSI2_PHY_CFG_DATA_POL_MASK(i + 1) | @@ -263,12 +258,12 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy) reg |= lanes->clk.pol << ISPCSI2_PHY_CFG_CLOCK_POL_SHIFT; reg |= lanes->clk.pos << ISPCSI2_PHY_CFG_CLOCK_POSITION_SHIFT; - isp_reg_writel(csi2->isp, reg, phy->cfg_regs, ISPCSI2_PHY_CFG); + isp_reg_writel(phy->isp, reg, phy->cfg_regs, ISPCSI2_PHY_CFG); return 0; } -int omap3isp_csiphy_acquire(struct isp_csiphy *phy) +int omap3isp_csiphy_acquire(struct isp_csiphy *phy, struct media_entity *entity) { int rval; @@ -288,6 +283,8 @@ int omap3isp_csiphy_acquire(struct isp_csiphy *phy) if (rval < 0) goto done; + phy->entity = entity; + rval = omap3isp_csiphy_config(phy); if (rval < 0) goto done; @@ -301,10 +298,10 @@ int omap3isp_csiphy_acquire(struct isp_csiphy *phy) csiphy_power_autoswitch_enable(phy, true); } - - phy->phy_in_use = 1; - done: + if (rval < 0) + phy->entity = NULL; + mutex_unlock(&phy->mutex); return rval; } @@ -312,10 +309,8 @@ done: void omap3isp_csiphy_release(struct isp_csiphy *phy) { mutex_lock(&phy->mutex); - if (phy->phy_in_use) { - struct isp_csi2_device *csi2 = phy->csi2; - struct isp_pipeline *pipe = - to_isp_pipeline(&csi2->subdev.entity); + if (phy->entity) { + struct isp_pipeline *pipe = to_isp_pipeline(phy->entity); struct isp_bus_cfg *buscfg = pipe->external->host_priv; csiphy_routing_cfg(phy, buscfg->interface, false, @@ -325,7 +320,7 @@ void omap3isp_csiphy_release(struct isp_csiphy *phy) csiphy_set_power(phy, ISPCSI2_PHY_CFG_PWR_CMD_OFF); } regulator_disable(phy->vdd); - phy->phy_in_use = 0; + phy->entity = NULL; } mutex_unlock(&phy->mutex); } diff --git a/drivers/media/platform/omap3isp/ispcsiphy.h b/drivers/media/platform/omap3isp/ispcsiphy.h index 978ca5c..91543a0 100644 --- a/drivers/media/platform/omap3isp/ispcsiphy.h +++ b/drivers/media/platform/omap3isp/ispcsiphy.h @@ -25,9 +25,10 @@ struct regulator; struct isp_csiphy { struct isp_device *isp; struct mutex mutex; /* serialize csiphy configuration */ - u8 phy_in_use; struct isp_csi2_device *csi2; struct regulator *vdd; + /* the entity that acquired the phy */ + struct media_entity *entity; /* mem resources - enums as defined in enum isp_mem_resources */ unsigned int cfg_regs; @@ -36,7 +37,8 @@ struct isp_csiphy { u8 num_data_lanes; /* number of CSI2 Data Lanes supported */ }; -int omap3isp_csiphy_acquire(struct isp_csiphy *phy); +int omap3isp_csiphy_acquire(struct isp_csiphy *phy, + struct media_entity *entity); void omap3isp_csiphy_release(struct isp_csiphy *phy); int omap3isp_csiphy_init(struct isp_device *isp); void omap3isp_csiphy_cleanup(struct isp_device *isp); -- 2.7.4