From: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@xxxxxxxxx>
The GPIO configuration and register offsets are different from
baytrail for cherrytrail. Port the gpio programming accordingly
for cherrytrail in this patch.
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@xxxxxxxxx>
Signed-off-by: Deepak M <m.deepak@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 20 +++++++
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 87 +++++++++++++++++++++++++++++-
2 files changed, 106 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 606dc71..fc57477 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -615,6 +615,16 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define IOSF_PORT_NC 0x11
#define IOSF_PORT_DPIO 0x12
#define IOSF_PORT_GPIO_NC 0x13
+#define CHV_IOSF_PORT_GPIO_N 0x13
+#define CHV_IOSF_PORT_GPIO_SE 0x48
+#define CHV_IOSF_PORT_GPIO_SW 0xB2
+#define CHV_IOSF_PORT_GPIO_E 0xA8
+#define CHV_MAX_GPIO_NUM_N 72
+#define CHV_MAX_GPIO_NUM_SE 99
+#define CHV_MAX_GPIO_NUM_SW 197
+#define CHV_MIN_GPIO_NUM_SE 73
+#define CHV_MIN_GPIO_NUM_SW 100
+#define CHV_MIN_GPIO_NUM_E 198
#define IOSF_PORT_CCK 0x14
#define IOSF_PORT_DPIO_2 0x1a
#define IOSF_PORT_FLISDSI 0x1b
@@ -630,6 +640,16 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define VLV_GPIO_CFG 0x2000CC00
#define VLV_GPIO_INPUT_DIS 0x04
+#define CHV_PAD_FMLY_BASE 0x4400
+#define CHV_PAD_FMLY_SIZE 0x400
+#define CHV_PAD_CFG_0_1_REG_SIZE 0x8
+#define CHV_PAD_CFG_REG_SIZE 0x4
+#define CHV_VBT_MAX_PINS_PER_FMLY 15
+
+#define CHV_GPIO_CFG_UNLOCK 0x00000000
+#define CHV_GPIO_CFG_HIZ 0x00008100
+#define CHV_GPIO_CFG_TX_STATE_SHIFT 1
+
/* See configdb bunit SB addr map */
#define BUNIT_REG_BISOC 0x11
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index e02e5e0..7fd1fae 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -685,7 +685,68 @@ static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
return data;
}
-static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
+static int chv_program_gpio(struct intel_dsi *intel_dsi,
+ const u8 *data, const u8 **cur_data)
+{
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u8 gpio, action;
+ u16 family_num;
+ u16 function, pad;
+ u8 block;
+
+ /*
+ * Skipping the first byte as it is of no
+ * interest for linux kernel in new VBT version
+ */
+ if (dev_priv->vbt.dsi.seq_version >= 3)
+ data++;
+
+ gpio = *data++;
+
+ /* pull up/down */
+ action = *data++;
+
+ if (dev_priv->vbt.dsi.seq_version >= 3) {
+ if (gpio <= CHV_MAX_GPIO_NUM_N) {
+ block = CHV_IOSF_PORT_GPIO_N;
+ DRM_DEBUG_DRIVER("GPIO is in the north Block\n");
+ } else if (gpio <= CHV_MAX_GPIO_NUM_SE) {
+ block = CHV_IOSF_PORT_GPIO_SE;
+ gpio = gpio - CHV_MIN_GPIO_NUM_SE;
+ DRM_DEBUG_DRIVER("GPIO is in the south east Block\n");
+ } else if (gpio <= CHV_MAX_GPIO_NUM_SW) {
+ block = CHV_IOSF_PORT_GPIO_SW;
+ gpio = gpio - CHV_MIN_GPIO_NUM_SW;
+ DRM_DEBUG_DRIVER("GPIO is in the south west Block\n");
+ } else {
+ block = CHV_IOSF_PORT_GPIO_E;
+ gpio = gpio - CHV_MIN_GPIO_NUM_E;
+ DRM_DEBUG_DRIVER("GPIO is in the east Block\n");
+ }
+ } else
+ block = IOSF_PORT_GPIO_NC;
+
+ family_num = gpio / CHV_VBT_MAX_PINS_PER_FMLY;
+ gpio = gpio - (family_num * CHV_VBT_MAX_PINS_PER_FMLY);
+ pad = CHV_PAD_FMLY_BASE + (family_num * CHV_PAD_FMLY_SIZE) +
+ (((u16)gpio) * CHV_PAD_CFG_0_1_REG_SIZE);
+ function = pad + CHV_PAD_CFG_REG_SIZE;
+
+ mutex_lock(&dev_priv->sb_lock);
+ vlv_iosf_sb_write(dev_priv, block, function,
+ CHV_GPIO_CFG_UNLOCK);
+ vlv_iosf_sb_write(dev_priv, block, pad, CHV_GPIO_CFG_HIZ |
+ (action << CHV_GPIO_CFG_TX_STATE_SHIFT));
+ mutex_unlock(&dev_priv->sb_lock);
+
+ *cur_data = data;
+
+ return 0;
+}
+
+static int vlv_program_gpio(struct intel_dsi *intel_dsi,
+ const u8 *data, const u8 **cur_data)
{
u8 gpio, action;
u16 function, pad;
@@ -746,6 +807,30 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
mutex_unlock(&dev_priv->sb_lock);
out:
+ *cur_data = data;
+
+ return 0;
+}
+
+static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
+{
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ int ret;
+
+ DRM_DEBUG_DRIVER("MIPI: executing gpio element\n");
+
+ ret = -EINVAL;
+
+ if (IS_CHERRYVIEW(dev))
+ ret = chv_program_gpio(intel_dsi, data, &data);
+ else if (IS_VALLEYVIEW(dev))
+ ret = vlv_program_gpio(intel_dsi, data, &data);
+ else
+ DRM_ERROR("GPIO programming missing for this platform.\n");
+
+ if (ret)
+ return NULL;
+
return data;
}
--
1.9.1
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