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authorTero Kristo <t-kristo@ti.com>2015-02-19 11:42:59 +0100
committerTero Kristo <t-kristo@ti.com>2015-03-31 20:26:58 +0200
commit23d34981c7e36fb609d3eaacf0a52a05d75ae008 (patch)
treeae42b8c9c9d524817840e64c209106bb42b39a1f /arch/arm/mach-omap2
parentARM: dts: omap4: add minimal l4 bus layout with control module support (diff)
downloadlinux-23d34981c7e36fb609d3eaacf0a52a05d75ae008.tar.xz
linux-23d34981c7e36fb609d3eaacf0a52a05d75ae008.zip
ARM: OMAP4: display: convert display to use syscon for dsi muxing
The legacy control module APIs will be gone, thus convert the display driver to use syscon. This change should eventually be moved to display driver from the board directory. Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r--arch/arm/mach-omap2/display.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index 7a050f9c37ff..f492ae147c6a 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -26,6 +26,8 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
#include <video/omapdss.h>
#include "omap_hwmod.h"
@@ -104,6 +106,10 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initconst = {
{ "dss_hdmi", "omapdss_hdmi", -1 },
};
+#define OMAP4_DSIPHY_SYSCON_OFFSET 0x78
+
+static struct regmap *omap4_dsi_mux_syscon;
+
static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
{
u32 enable_mask, enable_shift;
@@ -124,7 +130,7 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
return -ENODEV;
}
- reg = omap4_ctrl_pad_readl(OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY);
+ regmap_read(omap4_dsi_mux_syscon, OMAP4_DSIPHY_SYSCON_OFFSET, &reg);
reg &= ~enable_mask;
reg &= ~pipd_mask;
@@ -132,7 +138,7 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
reg |= (lanes << enable_shift) & enable_mask;
reg |= (lanes << pipd_shift) & pipd_mask;
- omap4_ctrl_pad_writel(reg, OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY);
+ regmap_write(omap4_dsi_mux_syscon, OMAP4_DSIPHY_SYSCON_OFFSET, reg);
return 0;
}
@@ -665,5 +671,10 @@ int __init omapdss_init_of(void)
return r;
}
+ /* add DSI info for omap4 */
+ node = of_find_node_by_name(NULL, "omap4_padconf_global");
+ if (node)
+ omap4_dsi_mux_syscon = syscon_node_to_regmap(node);
+
return 0;
}