OMAP: DSS2: DSI: Improve dsi_mux_pads parameters

dsi_mux_pads() needs to know about the DSI HW module and the DSI lanes
used. Split the function into two, enable and disable, which take
necessary arguments, and add empty implementations for both.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

3 files changed, 47 insertions, 12 deletions

diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index c42df111c9d..7c6011df80a 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -74,6 +74,15 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initdata = {
 	{ "dss_hdmi", "omapdss_hdmi", -1 },
 };
 
+static int omap_dsi_enable_pads(int dsi_id, unsigned lane_mask)
+{
+	return 0;
+}
+
+static void omap_dsi_disable_pads(int dsi_id, unsigned lane_mask)
+{
+}
+
 int __init omap_display_init(struct omap_dss_board_info *board_data)
 {
 	int r = 0;
@@ -96,6 +105,11 @@ int __init omap_display_init(struct omap_dss_board_info *board_data)
 		oh_count = ARRAY_SIZE(omap4_dss_hwmod_data);
 	}
 
+	if (board_data->dsi_enable_pads == NULL)
+		board_data->dsi_enable_pads = omap_dsi_enable_pads;
+	if (board_data->dsi_disable_pads == NULL)
+		board_data->dsi_disable_pads = omap_dsi_disable_pads;
+
 	pdata.board_data = board_data;
 	pdata.board_data->get_context_loss_count =
 		omap_pm_get_dev_context_loss_count;
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 713e1d9ac0e..ae6bf1d46c9 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -274,7 +274,8 @@ struct dsi_data {
 	struct clk *dss_clk;
 	struct clk *sys_clk;
 
-	void (*dsi_mux_pads)(bool enable);
+	int (*enable_pads)(int dsi_id, unsigned lane_mask);
+	void (*disable_pads)(int dsi_id, unsigned lane_mask);
 
 	struct dsi_clock_info current_cinfo;
 
@@ -2355,6 +2356,24 @@ static int dsi_cio_wait_tx_clk_esc_reset(struct omap_dss_device *dssdev)
 	return 0;
 }
 
+static unsigned dsi_get_lane_mask(struct omap_dss_device *dssdev)
+{
+	unsigned lanes = 0;
+
+	if (dssdev->phy.dsi.clk_lane != 0)
+		lanes |= 1 << (dssdev->phy.dsi.clk_lane - 1);
+	if (dssdev->phy.dsi.data1_lane != 0)
+		lanes |= 1 << (dssdev->phy.dsi.data1_lane - 1);
+	if (dssdev->phy.dsi.data2_lane != 0)
+		lanes |= 1 << (dssdev->phy.dsi.data2_lane - 1);
+	if (dssdev->phy.dsi.data3_lane != 0)
+		lanes |= 1 << (dssdev->phy.dsi.data3_lane - 1);
+	if (dssdev->phy.dsi.data4_lane != 0)
+		lanes |= 1 << (dssdev->phy.dsi.data4_lane - 1);
+
+	return lanes;
+}
+
 static int dsi_cio_init(struct omap_dss_device *dssdev)
 {
 	struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
@@ -2365,8 +2384,9 @@ static int dsi_cio_init(struct omap_dss_device *dssdev)
 
 	DSSDBGF();
 
-	if (dsi->dsi_mux_pads)
-		dsi->dsi_mux_pads(true);
+	r = dsi->enable_pads(dsidev->id, dsi_get_lane_mask(dssdev));
+	if (r)
+		return r;
 
 	dsi_enable_scp_clk(dsidev);
 
@@ -2462,19 +2482,18 @@ err_cio_pwr:
 		dsi_cio_disable_lane_override(dsidev);
 err_scp_clk_dom:
 	dsi_disable_scp_clk(dsidev);
-	if (dsi->dsi_mux_pads)
-		dsi->dsi_mux_pads(false);
+	dsi->disable_pads(dsidev->id, dsi_get_lane_mask(dssdev));
 	return r;
 }
 
-static void dsi_cio_uninit(struct platform_device *dsidev)
+static void dsi_cio_uninit(struct omap_dss_device *dssdev)
 {
+	struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
 	struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
 
 	dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF);
 	dsi_disable_scp_clk(dsidev);
-	if (dsi->dsi_mux_pads)
-		dsi->dsi_mux_pads(false);
+	dsi->disable_pads(dsidev->id, dsi_get_lane_mask(dssdev));
 }
 
 static void dsi_config_tx_fifo(struct platform_device *dsidev,
@@ -4161,7 +4180,7 @@ static int dsi_display_init_dsi(struct omap_dss_device *dssdev)
 
 	return 0;
 err3:
-	dsi_cio_uninit(dsidev);
+	dsi_cio_uninit(dssdev);
 err2:
 	dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
 	dss_select_dsi_clk_source(dsi_module, OMAP_DSS_CLK_SRC_FCK);
@@ -4190,7 +4209,7 @@ static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev,
 
 	dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
 	dss_select_dsi_clk_source(dsi_module, OMAP_DSS_CLK_SRC_FCK);
-	dsi_cio_uninit(dsidev);
+	dsi_cio_uninit(dssdev);
 	dsi_pll_uninit(dsidev, disconnect_lanes);
 }
 
@@ -4481,7 +4500,8 @@ static int omap_dsihw_probe(struct platform_device *dsidev)
 
 	dss_plat_data = dsidev->dev.platform_data;
 	board_info = dss_plat_data->board_data;
-	dsi->dsi_mux_pads = board_info->dsi_mux_pads;
+	dsi->enable_pads = board_info->dsi_enable_pads;
+	dsi->disable_pads = board_info->dsi_disable_pads;
 
 	spin_lock_init(&dsi->irq_lock);
 	spin_lock_init(&dsi->errors_lock);
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index 3b55ef22f8d..c4d1d4ed909 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -242,7 +242,8 @@ struct omap_dss_board_info {
 	int num_devices;
 	struct omap_dss_device **devices;
 	struct omap_dss_device *default_device;
-	void (*dsi_mux_pads)(bool enable);
+	int (*dsi_enable_pads)(int dsi_id, unsigned lane_mask);
+	void (*dsi_disable_pads)(int dsi_id, unsigned lane_mask);
 };
 
 #if defined(CONFIG_OMAP2_DSS_MODULE) || defined(CONFIG_OMAP2_DSS)