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* [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
@ 2018-07-09 16:22 Lucas De Marchi
  2018-07-09 16:22 ` [PATCH 2/2] drm/i915: remove PCH_GMBUS defines Lucas De Marchi
                   ` (3 more replies)
  0 siblings, 4 replies; 10+ messages in thread
From: Lucas De Marchi @ 2018-07-09 16:22 UTC (permalink / raw)
  To: intel-gfx; +Cc: Rodrigo Vivi

Instead of defining all registers twice, define just a PCH_GPIO_BASE
that has the same address as PCH_GPIO_A and use that to calculate all
the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
the same thing.

This also rewrites the GMBUS[05] registers since they depend on
gpio_mmio_base.

v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
    macro to return a particular gpio address and move the enum out of
    i915_reg.h (suggested by Jani)

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
 drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
 drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
 drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
 4 files changed, 52 insertions(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index e39492aaff6c..e25a74fe753b 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 
 	MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
 		gmbus_mmio_write);
-	MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
+	MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
 	MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
 
 	MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0424e45f88db..f8f71d577613 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3088,18 +3088,11 @@ enum i915_power_well_id {
 /*
  * GPIO regs
  */
-#define GPIOA			_MMIO(0x5010)
-#define GPIOB			_MMIO(0x5014)
-#define GPIOC			_MMIO(0x5018)
-#define GPIOD			_MMIO(0x501c)
-#define GPIOE			_MMIO(0x5020)
-#define GPIOF			_MMIO(0x5024)
-#define GPIOG			_MMIO(0x5028)
-#define GPIOH			_MMIO(0x502c)
-#define GPIOJ			_MMIO(0x5034)
-#define GPIOK			_MMIO(0x5038)
-#define GPIOL			_MMIO(0x503C)
-#define GPIOM			_MMIO(0x5040)
+#define GPIO_OFFSET	0x5010u
+#define PCH_GPIO_BASE	(0xc0000u + GPIO_OFFSET)
+#define VLV_GPIO_BASE	(VLV_DISPLAY_BASE + GPIO_OFFSET)
+#define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 4 * (gpio))
+
 # define GPIO_CLOCK_DIR_MASK		(1 << 0)
 # define GPIO_CLOCK_DIR_IN		(0 << 1)
 # define GPIO_CLOCK_DIR_OUT		(1 << 1)
@@ -3115,7 +3108,11 @@ enum i915_power_well_id {
 # define GPIO_DATA_VAL_IN		(1 << 12)
 # define GPIO_DATA_PULLUP_DISABLE	(1 << 13)
 
-#define GMBUS0			_MMIO(dev_priv->gpio_mmio_base + 0x5100) /* clock/port select */
+#define GMBUS_OFFSET		0x5100u
+
+/* clock/port select */
+#define GMBUS0			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
+				      + GMBUS_OFFSET)
 #define   GMBUS_AKSV_SELECT	(1 << 11)
 #define   GMBUS_RATE_100KHZ	(0 << 8)
 #define   GMBUS_RATE_50KHZ	(1 << 8)
@@ -3141,7 +3138,10 @@ enum i915_power_well_id {
 #define   GMBUS_PIN_12_TC4_ICP	12
 
 #define   GMBUS_NUM_PINS	13 /* including 0 */
-#define GMBUS1			_MMIO(dev_priv->gpio_mmio_base + 0x5104) /* command/status */
+
+/* command/status */
+#define GMBUS1			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
+				      + GMBUS_OFFSET + 0x4)
 #define   GMBUS_SW_CLR_INT	(1 << 31)
 #define   GMBUS_SW_RDY		(1 << 30)
 #define   GMBUS_ENT		(1 << 29) /* enable timeout */
@@ -3155,7 +3155,10 @@ enum i915_power_well_id {
 #define   GMBUS_SLAVE_ADDR_SHIFT 1
 #define   GMBUS_SLAVE_READ	(1 << 0)
 #define   GMBUS_SLAVE_WRITE	(0 << 0)
-#define GMBUS2			_MMIO(dev_priv->gpio_mmio_base + 0x5108) /* status */
+
+/* status */
+#define GMBUS2			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
+				      + GMBUS_OFFSET + 0x8)
 #define   GMBUS_INUSE		(1 << 15)
 #define   GMBUS_HW_WAIT_PHASE	(1 << 14)
 #define   GMBUS_STALL_TIMEOUT	(1 << 13)
@@ -3163,14 +3166,21 @@ enum i915_power_well_id {
 #define   GMBUS_HW_RDY		(1 << 11)
 #define   GMBUS_SATOER		(1 << 10)
 #define   GMBUS_ACTIVE		(1 << 9)
-#define GMBUS3			_MMIO(dev_priv->gpio_mmio_base + 0x510c) /* data buffer bytes 3-0 */
-#define GMBUS4			_MMIO(dev_priv->gpio_mmio_base + 0x5110) /* interrupt mask (Pineview+) */
+
+/* data buffer bytes 3-0 */
+#define GMBUS3			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
+				      + GMBUS_OFFSET + 0xc)
+/* interrupt mask (Pineview+) */
+#define GMBUS4			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
+				      + GMBUS_OFFSET + 0x10)
 #define   GMBUS_SLAVE_TIMEOUT_EN (1 << 4)
 #define   GMBUS_NAK_EN		(1 << 3)
 #define   GMBUS_IDLE_EN		(1 << 2)
 #define   GMBUS_HW_WAIT_EN	(1 << 1)
 #define   GMBUS_HW_RDY_EN	(1 << 0)
-#define GMBUS5			_MMIO(dev_priv->gpio_mmio_base + 0x5120) /* byte index */
+/* byte index */
+#define GMBUS5			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
+				      + GMBUS_OFFSET + 0x20)
 #define   GMBUS_2BYTE_INDEX_EN	(1 << 31)
 
 /*
@@ -7668,13 +7678,6 @@ enum {
 #define   ICP_TC_HPD_LONG_DETECT(tc_port)	(2 << (tc_port) * 4)
 #define   ICP_TC_HPD_SHORT_DETECT(tc_port)	(1 << (tc_port) * 4)
 
-#define PCH_GPIOA               _MMIO(0xc5010)
-#define PCH_GPIOB               _MMIO(0xc5014)
-#define PCH_GPIOC               _MMIO(0xc5018)
-#define PCH_GPIOD               _MMIO(0xc501c)
-#define PCH_GPIOE               _MMIO(0xc5020)
-#define PCH_GPIOF               _MMIO(0xc5024)
-
 #define PCH_GMBUS0		_MMIO(0xc5100)
 #define PCH_GMBUS1		_MMIO(0xc5104)
 #define PCH_GMBUS2		_MMIO(0xc5108)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 61e715ddd0d5..dedf87c58a95 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -152,6 +152,22 @@
  * Display related stuff
  */
 
+enum i915_gpio {
+	GPIOA = 0,
+	GPIOB,
+	GPIOC,
+	GPIOD,
+	GPIOE,
+	GPIOF,
+	GPIOG,
+	GPIOH,
+	__GPIOI_UNUSED,
+	GPIOJ,
+	GPIOK,
+	GPIOL,
+	GPIOM,
+};
+
 /* store information about an Ixxx DVO */
 /* The i830->i865 use multiple DVOs with multiple i2cs */
 /* the i915, i945 have a single sDVO i2c bus - which is different */
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index 97606c1be70d..f1c0b974daa6 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -37,7 +37,7 @@
 
 struct gmbus_pin {
 	const char *name;
-	i915_reg_t reg;
+	enum i915_gpio gpio;
 };
 
 /* Map gmbus pin pairs to names and registers. */
@@ -121,8 +121,7 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
 	else
 		size = ARRAY_SIZE(gmbus_pins);
 
-	return pin < size &&
-		i915_mmio_reg_valid(get_gmbus_pin(dev_priv, pin)->reg);
+	return pin < size && get_gmbus_pin(dev_priv, pin)->name;
 }
 
 /* Intel GPIO access functions */
@@ -292,8 +291,7 @@ intel_gpio_setup(struct intel_gmbus *bus, unsigned int pin)
 
 	algo = &bus->bit_algo;
 
-	bus->gpio_reg = _MMIO(dev_priv->gpio_mmio_base +
-			      i915_mmio_reg_offset(get_gmbus_pin(dev_priv, pin)->reg));
+	bus->gpio_reg = GPIO(get_gmbus_pin(dev_priv, pin)->gpio);
 	bus->adapter.algo_data = algo;
 	algo->setsda = set_data;
 	algo->setscl = set_clock;
@@ -775,11 +773,11 @@ int intel_setup_gmbus(struct drm_i915_private *dev_priv)
 		return 0;
 
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-		dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;
+		dev_priv->gpio_mmio_base = VLV_GPIO_BASE;
 	else if (!HAS_GMCH_DISPLAY(dev_priv))
-		dev_priv->gpio_mmio_base =
-			i915_mmio_reg_offset(PCH_GPIOA) -
-			i915_mmio_reg_offset(GPIOA);
+		dev_priv->gpio_mmio_base = PCH_GPIO_BASE;
+	else
+		dev_priv->gpio_mmio_base = GPIO_OFFSET;
 
 	mutex_init(&dev_priv->gmbus_mutex);
 	init_waitqueue_head(&dev_priv->gmbus_wait_queue);
-- 
2.17.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 10+ messages in thread

* [PATCH 2/2] drm/i915: remove PCH_GMBUS defines
  2018-07-09 16:22 [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Lucas De Marchi
@ 2018-07-09 16:22 ` Lucas De Marchi
  2018-07-09 16:46 ` ✓ Fi.CI.BAT: success for series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Patchwork
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 10+ messages in thread
From: Lucas De Marchi @ 2018-07-09 16:22 UTC (permalink / raw)
  To: intel-gfx; +Cc: Rodrigo Vivi

Now they are the same as GMBUS*, but without considering the different
address bases. In order to use GMBUS* we just need access to dev_priv in
a few places so this has been added.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 drivers/gpu/drm/i915/gvt/edid.c     | 42 +++++++++++++++++------------
 drivers/gpu/drm/i915/gvt/handlers.c |  8 +++---
 drivers/gpu/drm/i915/i915_reg.h     |  7 -----
 3 files changed, 29 insertions(+), 28 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/edid.c b/drivers/gpu/drm/i915/gvt/edid.c
index 4b98539025c5..3ffa814a634e 100644
--- a/drivers/gpu/drm/i915/gvt/edid.c
+++ b/drivers/gpu/drm/i915/gvt/edid.c
@@ -109,9 +109,11 @@ static inline int get_port_from_gmbus0(u32 gmbus0)
 
 static void reset_gmbus_controller(struct intel_vgpu *vgpu)
 {
-	vgpu_vreg_t(vgpu, PCH_GMBUS2) = GMBUS_HW_RDY;
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
+	vgpu_vreg_t(vgpu, GMBUS2) = GMBUS_HW_RDY;
 	if (!vgpu->display.i2c_edid.edid_available)
-		vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_SATOER;
+		vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_SATOER;
 	vgpu->display.i2c_edid.gmbus.phase = GMBUS_IDLE_PHASE;
 }
 
@@ -141,22 +143,23 @@ static int gmbus0_mmio_write(struct intel_vgpu *vgpu,
 	vgpu->display.i2c_edid.state = I2C_GMBUS;
 	vgpu->display.i2c_edid.gmbus.phase = GMBUS_IDLE_PHASE;
 
-	vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_ACTIVE;
-	vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_HW_RDY | GMBUS_HW_WAIT_PHASE;
+	vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_ACTIVE;
+	vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_HW_RDY | GMBUS_HW_WAIT_PHASE;
 
 	if (intel_vgpu_has_monitor_on_port(vgpu, port) &&
 			!intel_vgpu_port_is_dp(vgpu, port)) {
 		vgpu->display.i2c_edid.port = port;
 		vgpu->display.i2c_edid.edid_available = true;
-		vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_SATOER;
+		vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_SATOER;
 	} else
-		vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_SATOER;
+		vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_SATOER;
 	return 0;
 }
 
 static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	struct intel_vgpu_i2c_edid *i2c_edid = &vgpu->display.i2c_edid;
 	u32 slave_addr;
 	u32 wvalue = *(u32 *)p_data;
@@ -177,8 +180,8 @@ static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		 * 2) HW_RDY bit asserted
 		 */
 		if (wvalue & GMBUS_SW_CLR_INT) {
-			vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_INT;
-			vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_HW_RDY;
+			vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_INT;
+			vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_HW_RDY;
 		}
 
 		/* For virtualization, we suppose that HW is always ready,
@@ -226,7 +229,7 @@ static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 				 * visible in gmbus interface)
 				 */
 				i2c_edid->gmbus.phase = GMBUS_IDLE_PHASE;
-				vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_ACTIVE;
+				vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_ACTIVE;
 			}
 			break;
 		case NIDX_NS_W:
@@ -238,7 +241,7 @@ static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 			 * START (-->INDEX) -->DATA
 			 */
 			i2c_edid->gmbus.phase = GMBUS_DATA_PHASE;
-			vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_ACTIVE;
+			vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_ACTIVE;
 			break;
 		default:
 			gvt_vgpu_err("Unknown/reserved GMBUS cycle detected!\n");
@@ -265,6 +268,7 @@ static int gmbus3_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 static int gmbus3_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	int i;
 	unsigned char byte_data;
 	struct intel_vgpu_i2c_edid *i2c_edid = &vgpu->display.i2c_edid;
@@ -274,7 +278,7 @@ static int gmbus3_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
 	u32 reg_data = 0;
 
 	/* Data can only be recevied if previous settings correct */
-	if (vgpu_vreg_t(vgpu, PCH_GMBUS1) & GMBUS_SLAVE_READ) {
+	if (vgpu_vreg_t(vgpu, GMBUS1) & GMBUS_SLAVE_READ) {
 		if (byte_left <= 0) {
 			memcpy(p_data, &vgpu_vreg(vgpu, offset), bytes);
 			return 0;
@@ -350,12 +354,14 @@ static int gmbus2_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 int intel_gvt_i2c_handle_gmbus_read(struct intel_vgpu *vgpu,
 	unsigned int offset, void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
 	if (WARN_ON(bytes > 8 && (offset & (bytes - 1))))
 		return -EINVAL;
 
-	if (offset == i915_mmio_reg_offset(PCH_GMBUS2))
+	if (offset == i915_mmio_reg_offset(GMBUS2))
 		return gmbus2_mmio_read(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS3))
+	else if (offset == i915_mmio_reg_offset(GMBUS3))
 		return gmbus3_mmio_read(vgpu, offset, p_data, bytes);
 
 	memcpy(p_data, &vgpu_vreg(vgpu, offset), bytes);
@@ -375,16 +381,18 @@ int intel_gvt_i2c_handle_gmbus_read(struct intel_vgpu *vgpu,
 int intel_gvt_i2c_handle_gmbus_write(struct intel_vgpu *vgpu,
 		unsigned int offset, void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
 	if (WARN_ON(bytes > 8 && (offset & (bytes - 1))))
 		return -EINVAL;
 
-	if (offset == i915_mmio_reg_offset(PCH_GMBUS0))
+	if (offset == i915_mmio_reg_offset(GMBUS0))
 		return gmbus0_mmio_write(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS1))
+	else if (offset == i915_mmio_reg_offset(GMBUS1))
 		return gmbus1_mmio_write(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS2))
+	else if (offset == i915_mmio_reg_offset(GMBUS2))
 		return gmbus2_mmio_write(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS3))
+	else if (offset == i915_mmio_reg_offset(GMBUS3))
 		return gmbus3_mmio_write(vgpu, offset, p_data, bytes);
 
 	memcpy(&vgpu_vreg(vgpu, offset), p_data, bytes);
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index e25a74fe753b..6ead029dbb48 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2082,8 +2082,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 
 	MMIO_D(_MMIO(0x48268), D_ALL);
 
-	MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
-		gmbus_mmio_write);
+	MMIO_F(GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
+	       gmbus_mmio_write);
 	MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
 	MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
 
@@ -2473,8 +2473,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(_MMIO(0xe6704), D_ALL);
 	MMIO_D(_MMIO(0xe6800), D_ALL);
 	MMIO_D(_MMIO(0xe6804), D_ALL);
-	MMIO_D(PCH_GMBUS4, D_ALL);
-	MMIO_D(PCH_GMBUS5, D_ALL);
+	MMIO_D(GMBUS4, D_ALL);
+	MMIO_D(GMBUS5, D_ALL);
 
 	MMIO_D(_MMIO(0x902c), D_ALL);
 	MMIO_D(_MMIO(0xec008), D_ALL);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f8f71d577613..0baafabcf52c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7678,13 +7678,6 @@ enum {
 #define   ICP_TC_HPD_LONG_DETECT(tc_port)	(2 << (tc_port) * 4)
 #define   ICP_TC_HPD_SHORT_DETECT(tc_port)	(1 << (tc_port) * 4)
 
-#define PCH_GMBUS0		_MMIO(0xc5100)
-#define PCH_GMBUS1		_MMIO(0xc5104)
-#define PCH_GMBUS2		_MMIO(0xc5108)
-#define PCH_GMBUS3		_MMIO(0xc510c)
-#define PCH_GMBUS4		_MMIO(0xc5110)
-#define PCH_GMBUS5		_MMIO(0xc5120)
-
 #define _PCH_DPLL_A              0xc6014
 #define _PCH_DPLL_B              0xc6018
 #define PCH_DPLL(pll) _MMIO((pll) == 0 ? _PCH_DPLL_A : _PCH_DPLL_B)
-- 
2.17.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 10+ messages in thread

* ✓ Fi.CI.BAT: success for series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-09 16:22 [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Lucas De Marchi
  2018-07-09 16:22 ` [PATCH 2/2] drm/i915: remove PCH_GMBUS defines Lucas De Marchi
@ 2018-07-09 16:46 ` Patchwork
  2018-07-10  1:15 ` ✓ Fi.CI.IGT: " Patchwork
  2018-07-12 15:04 ` [PATCH 1/2] " Daniel Vetter
  3 siblings, 0 replies; 10+ messages in thread
From: Patchwork @ 2018-07-09 16:46 UTC (permalink / raw)
  To: Lucas De Marchi; +Cc: intel-gfx

== Series Details ==

Series: series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
URL   : https://patchwork.freedesktop.org/series/46200/
State : success

== Summary ==

= CI Bug Log - changes from CI_DRM_4455 -> Patchwork_9595 =

== Summary - SUCCESS ==

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/46200/revisions/1/mbox/

== Known issues ==

  Here are the changes found in Patchwork_9595 that come from known issues:

  === IGT changes ===

    ==== Issues hit ====

    igt@kms_chamelium@hdmi-hpd-fast:
      fi-kbl-7500u:       SKIP -> FAIL (fdo#102672, fdo#103841)

    igt@kms_flip@basic-flip-vs-modeset:
      fi-skl-6700hq:      PASS -> DMESG-WARN (fdo#105998) +1

    
    ==== Possible fixes ====

    igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c:
      fi-bxt-dsi:         INCOMPLETE (fdo#103927) -> PASS

    
  fdo#102672 https://bugs.freedesktop.org/show_bug.cgi?id=102672
  fdo#103841 https://bugs.freedesktop.org/show_bug.cgi?id=103841
  fdo#103927 https://bugs.freedesktop.org/show_bug.cgi?id=103927
  fdo#105998 https://bugs.freedesktop.org/show_bug.cgi?id=105998


== Participating hosts (46 -> 41) ==

  Missing    (5): fi-ctg-p8600 fi-ilk-m540 fi-byt-squawks fi-bsw-cyan fi-hsw-4200u 


== Build changes ==

    * Linux: CI_DRM_4455 -> Patchwork_9595

  CI_DRM_4455: b3d84bf4dc417107dafe58a149ba8e62472d4066 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4544: 764160f214cd916ddb79408b9f28ac0ad2df40e0 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_9595: c5ae11b2d0f01b0cc2b8e867b2fee07f898e2811 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

c5ae11b2d0f0 drm/i915: remove PCH_GMBUS defines
7a81c369d5df drm/i915: remove confusing GPIO vs PCH_GPIO

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_9595/issues.html
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* ✓ Fi.CI.IGT: success for series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-09 16:22 [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Lucas De Marchi
  2018-07-09 16:22 ` [PATCH 2/2] drm/i915: remove PCH_GMBUS defines Lucas De Marchi
  2018-07-09 16:46 ` ✓ Fi.CI.BAT: success for series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Patchwork
@ 2018-07-10  1:15 ` Patchwork
  2018-07-12 15:04 ` [PATCH 1/2] " Daniel Vetter
  3 siblings, 0 replies; 10+ messages in thread
From: Patchwork @ 2018-07-10  1:15 UTC (permalink / raw)
  To: Lucas De Marchi; +Cc: intel-gfx

== Series Details ==

Series: series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
URL   : https://patchwork.freedesktop.org/series/46200/
State : success

== Summary ==

= CI Bug Log - changes from CI_DRM_4455_full -> Patchwork_9595_full =

== Summary - WARNING ==

  Minor unknown changes coming with Patchwork_9595_full need to be verified
  manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_9595_full, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  

== Possible new issues ==

  Here are the unknown changes that may have been introduced in Patchwork_9595_full:

  === IGT changes ===

    ==== Warnings ====

    igt@gem_exec_schedule@deep-blt:
      shard-kbl:          PASS -> SKIP +2

    igt@gem_exec_schedule@deep-bsd2:
      shard-kbl:          SKIP -> PASS

    igt@kms_properties@plane-properties-legacy:
      shard-snb:          PASS -> SKIP

    
== Known issues ==

  Here are the changes found in Patchwork_9595_full that come from known issues:

  === IGT changes ===

    ==== Issues hit ====

    igt@gem_ppgtt@blt-vs-render-ctx0:
      shard-kbl:          PASS -> INCOMPLETE (fdo#103665, fdo#106023)

    igt@kms_atomic_transition@1x-modeset-transitions-nonblocking-fencing:
      shard-glk:          PASS -> FAIL (fdo#105703) +1

    igt@kms_cursor_legacy@2x-nonblocking-modeset-vs-cursor-atomic:
      shard-glk:          PASS -> FAIL (fdo#105454, fdo#106509)

    igt@kms_flip@flip-vs-expired-vblank:
      shard-apl:          PASS -> FAIL (fdo#102887, fdo#105363)
      shard-glk:          PASS -> FAIL (fdo#105363)

    igt@kms_setmode@basic:
      shard-apl:          PASS -> FAIL (fdo#99912)

    
    ==== Possible fixes ====

    igt@kms_flip_tiling@flip-y-tiled:
      shard-glk:          FAIL (fdo#107161) -> PASS

    igt@prime_vgem@basic-fence-flip:
      shard-apl:          FAIL (fdo#104008) -> PASS

    
  fdo#102887 https://bugs.freedesktop.org/show_bug.cgi?id=102887
  fdo#103665 https://bugs.freedesktop.org/show_bug.cgi?id=103665
  fdo#104008 https://bugs.freedesktop.org/show_bug.cgi?id=104008
  fdo#105363 https://bugs.freedesktop.org/show_bug.cgi?id=105363
  fdo#105454 https://bugs.freedesktop.org/show_bug.cgi?id=105454
  fdo#105703 https://bugs.freedesktop.org/show_bug.cgi?id=105703
  fdo#106023 https://bugs.freedesktop.org/show_bug.cgi?id=106023
  fdo#106509 https://bugs.freedesktop.org/show_bug.cgi?id=106509
  fdo#107161 https://bugs.freedesktop.org/show_bug.cgi?id=107161
  fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912


== Participating hosts (5 -> 5) ==

  No changes in participating hosts


== Build changes ==

    * Linux: CI_DRM_4455 -> Patchwork_9595

  CI_DRM_4455: b3d84bf4dc417107dafe58a149ba8e62472d4066 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4544: 764160f214cd916ddb79408b9f28ac0ad2df40e0 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_9595: c5ae11b2d0f01b0cc2b8e867b2fee07f898e2811 @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_9595/shards.html
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-09 16:22 [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Lucas De Marchi
                   ` (2 preceding siblings ...)
  2018-07-10  1:15 ` ✓ Fi.CI.IGT: " Patchwork
@ 2018-07-12 15:04 ` Daniel Vetter
  2018-07-12 16:24   ` Lucas De Marchi
  3 siblings, 1 reply; 10+ messages in thread
From: Daniel Vetter @ 2018-07-12 15:04 UTC (permalink / raw)
  To: Lucas De Marchi; +Cc: intel-gfx, Rodrigo Vivi

On Mon, Jul 09, 2018 at 09:22:21AM -0700, Lucas De Marchi wrote:
> Instead of defining all registers twice, define just a PCH_GPIO_BASE
> that has the same address as PCH_GPIO_A and use that to calculate all
> the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
> the same thing.
> 
> This also rewrites the GMBUS[05] registers since they depend on
> gpio_mmio_base.
> 
> v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
>     macro to return a particular gpio address and move the enum out of
>     i915_reg.h (suggested by Jani)
> 
> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
> ---
>  drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
>  drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
>  drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
>  drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
>  4 files changed, 52 insertions(+), 35 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> index e39492aaff6c..e25a74fe753b 100644
> --- a/drivers/gpu/drm/i915/gvt/handlers.c
> +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> @@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
>  
>  	MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
>  		gmbus_mmio_write);
> -	MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> +	MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
>  	MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
>  
>  	MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 0424e45f88db..f8f71d577613 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3088,18 +3088,11 @@ enum i915_power_well_id {
>  /*
>   * GPIO regs
>   */
> -#define GPIOA			_MMIO(0x5010)
> -#define GPIOB			_MMIO(0x5014)
> -#define GPIOC			_MMIO(0x5018)
> -#define GPIOD			_MMIO(0x501c)
> -#define GPIOE			_MMIO(0x5020)
> -#define GPIOF			_MMIO(0x5024)
> -#define GPIOG			_MMIO(0x5028)
> -#define GPIOH			_MMIO(0x502c)
> -#define GPIOJ			_MMIO(0x5034)
> -#define GPIOK			_MMIO(0x5038)
> -#define GPIOL			_MMIO(0x503C)
> -#define GPIOM			_MMIO(0x5040)
> +#define GPIO_OFFSET	0x5010u
> +#define PCH_GPIO_BASE	(0xc0000u + GPIO_OFFSET)
> +#define VLV_GPIO_BASE	(VLV_DISPLAY_BASE + GPIO_OFFSET)

This is a rather peculiar choice of baseline address. I'd either go with
0x5000u or 0x0000u (which avoids the need to change all the gmbus macros).
Only needs a slight adjustment to your GPIO macro, but avoids the rather
onerous - GPIO_OFFSET + GMBUS_OFFSET you have below. That one kinda
indicates your offset is all confused.

Anyway, just a drive-by comment, I was looking for some other gmbus patch.
-Daniel

> +#define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 4 * (gpio))
> +
>  # define GPIO_CLOCK_DIR_MASK		(1 << 0)
>  # define GPIO_CLOCK_DIR_IN		(0 << 1)
>  # define GPIO_CLOCK_DIR_OUT		(1 << 1)
> @@ -3115,7 +3108,11 @@ enum i915_power_well_id {
>  # define GPIO_DATA_VAL_IN		(1 << 12)
>  # define GPIO_DATA_PULLUP_DISABLE	(1 << 13)
>  
> -#define GMBUS0			_MMIO(dev_priv->gpio_mmio_base + 0x5100) /* clock/port select */
> +#define GMBUS_OFFSET		0x5100u
> +
> +/* clock/port select */
> +#define GMBUS0			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> +				      + GMBUS_OFFSET)
>  #define   GMBUS_AKSV_SELECT	(1 << 11)
>  #define   GMBUS_RATE_100KHZ	(0 << 8)
>  #define   GMBUS_RATE_50KHZ	(1 << 8)
> @@ -3141,7 +3138,10 @@ enum i915_power_well_id {
>  #define   GMBUS_PIN_12_TC4_ICP	12
>  
>  #define   GMBUS_NUM_PINS	13 /* including 0 */
> -#define GMBUS1			_MMIO(dev_priv->gpio_mmio_base + 0x5104) /* command/status */
> +
> +/* command/status */
> +#define GMBUS1			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> +				      + GMBUS_OFFSET + 0x4)
>  #define   GMBUS_SW_CLR_INT	(1 << 31)
>  #define   GMBUS_SW_RDY		(1 << 30)
>  #define   GMBUS_ENT		(1 << 29) /* enable timeout */
> @@ -3155,7 +3155,10 @@ enum i915_power_well_id {
>  #define   GMBUS_SLAVE_ADDR_SHIFT 1
>  #define   GMBUS_SLAVE_READ	(1 << 0)
>  #define   GMBUS_SLAVE_WRITE	(0 << 0)
> -#define GMBUS2			_MMIO(dev_priv->gpio_mmio_base + 0x5108) /* status */
> +
> +/* status */
> +#define GMBUS2			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> +				      + GMBUS_OFFSET + 0x8)
>  #define   GMBUS_INUSE		(1 << 15)
>  #define   GMBUS_HW_WAIT_PHASE	(1 << 14)
>  #define   GMBUS_STALL_TIMEOUT	(1 << 13)
> @@ -3163,14 +3166,21 @@ enum i915_power_well_id {
>  #define   GMBUS_HW_RDY		(1 << 11)
>  #define   GMBUS_SATOER		(1 << 10)
>  #define   GMBUS_ACTIVE		(1 << 9)
> -#define GMBUS3			_MMIO(dev_priv->gpio_mmio_base + 0x510c) /* data buffer bytes 3-0 */
> -#define GMBUS4			_MMIO(dev_priv->gpio_mmio_base + 0x5110) /* interrupt mask (Pineview+) */
> +
> +/* data buffer bytes 3-0 */
> +#define GMBUS3			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> +				      + GMBUS_OFFSET + 0xc)
> +/* interrupt mask (Pineview+) */
> +#define GMBUS4			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> +				      + GMBUS_OFFSET + 0x10)
>  #define   GMBUS_SLAVE_TIMEOUT_EN (1 << 4)
>  #define   GMBUS_NAK_EN		(1 << 3)
>  #define   GMBUS_IDLE_EN		(1 << 2)
>  #define   GMBUS_HW_WAIT_EN	(1 << 1)
>  #define   GMBUS_HW_RDY_EN	(1 << 0)
> -#define GMBUS5			_MMIO(dev_priv->gpio_mmio_base + 0x5120) /* byte index */
> +/* byte index */
> +#define GMBUS5			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> +				      + GMBUS_OFFSET + 0x20)
>  #define   GMBUS_2BYTE_INDEX_EN	(1 << 31)
>  
>  /*
> @@ -7668,13 +7678,6 @@ enum {
>  #define   ICP_TC_HPD_LONG_DETECT(tc_port)	(2 << (tc_port) * 4)
>  #define   ICP_TC_HPD_SHORT_DETECT(tc_port)	(1 << (tc_port) * 4)
>  
> -#define PCH_GPIOA               _MMIO(0xc5010)
> -#define PCH_GPIOB               _MMIO(0xc5014)
> -#define PCH_GPIOC               _MMIO(0xc5018)
> -#define PCH_GPIOD               _MMIO(0xc501c)
> -#define PCH_GPIOE               _MMIO(0xc5020)
> -#define PCH_GPIOF               _MMIO(0xc5024)
> -
>  #define PCH_GMBUS0		_MMIO(0xc5100)
>  #define PCH_GMBUS1		_MMIO(0xc5104)
>  #define PCH_GMBUS2		_MMIO(0xc5108)
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 61e715ddd0d5..dedf87c58a95 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -152,6 +152,22 @@
>   * Display related stuff
>   */
>  
> +enum i915_gpio {
> +	GPIOA = 0,
> +	GPIOB,
> +	GPIOC,
> +	GPIOD,
> +	GPIOE,
> +	GPIOF,
> +	GPIOG,
> +	GPIOH,
> +	__GPIOI_UNUSED,
> +	GPIOJ,
> +	GPIOK,
> +	GPIOL,
> +	GPIOM,
> +};
> +
>  /* store information about an Ixxx DVO */
>  /* The i830->i865 use multiple DVOs with multiple i2cs */
>  /* the i915, i945 have a single sDVO i2c bus - which is different */
> diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
> index 97606c1be70d..f1c0b974daa6 100644
> --- a/drivers/gpu/drm/i915/intel_i2c.c
> +++ b/drivers/gpu/drm/i915/intel_i2c.c
> @@ -37,7 +37,7 @@
>  
>  struct gmbus_pin {
>  	const char *name;
> -	i915_reg_t reg;
> +	enum i915_gpio gpio;
>  };
>  
>  /* Map gmbus pin pairs to names and registers. */
> @@ -121,8 +121,7 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
>  	else
>  		size = ARRAY_SIZE(gmbus_pins);
>  
> -	return pin < size &&
> -		i915_mmio_reg_valid(get_gmbus_pin(dev_priv, pin)->reg);
> +	return pin < size && get_gmbus_pin(dev_priv, pin)->name;
>  }
>  
>  /* Intel GPIO access functions */
> @@ -292,8 +291,7 @@ intel_gpio_setup(struct intel_gmbus *bus, unsigned int pin)
>  
>  	algo = &bus->bit_algo;
>  
> -	bus->gpio_reg = _MMIO(dev_priv->gpio_mmio_base +
> -			      i915_mmio_reg_offset(get_gmbus_pin(dev_priv, pin)->reg));
> +	bus->gpio_reg = GPIO(get_gmbus_pin(dev_priv, pin)->gpio);
>  	bus->adapter.algo_data = algo;
>  	algo->setsda = set_data;
>  	algo->setscl = set_clock;
> @@ -775,11 +773,11 @@ int intel_setup_gmbus(struct drm_i915_private *dev_priv)
>  		return 0;
>  
>  	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> -		dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;
> +		dev_priv->gpio_mmio_base = VLV_GPIO_BASE;
>  	else if (!HAS_GMCH_DISPLAY(dev_priv))
> -		dev_priv->gpio_mmio_base =
> -			i915_mmio_reg_offset(PCH_GPIOA) -
> -			i915_mmio_reg_offset(GPIOA);
> +		dev_priv->gpio_mmio_base = PCH_GPIO_BASE;
> +	else
> +		dev_priv->gpio_mmio_base = GPIO_OFFSET;
>  
>  	mutex_init(&dev_priv->gmbus_mutex);
>  	init_waitqueue_head(&dev_priv->gmbus_wait_queue);
> -- 
> 2.17.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-12 15:04 ` [PATCH 1/2] " Daniel Vetter
@ 2018-07-12 16:24   ` Lucas De Marchi
  2018-07-12 17:03     ` Daniel Vetter
  0 siblings, 1 reply; 10+ messages in thread
From: Lucas De Marchi @ 2018-07-12 16:24 UTC (permalink / raw)
  To: Daniel Vetter; +Cc: intel-gfx, Lucas De Marchi, Rodrigo Vivi

On Thu, Jul 12, 2018 at 05:04:03PM +0200, Daniel Vetter wrote:
> On Mon, Jul 09, 2018 at 09:22:21AM -0700, Lucas De Marchi wrote:
> > Instead of defining all registers twice, define just a PCH_GPIO_BASE
> > that has the same address as PCH_GPIO_A and use that to calculate all
> > the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
> > the same thing.
> > 
> > This also rewrites the GMBUS[05] registers since they depend on
> > gpio_mmio_base.
> > 
> > v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
> >     macro to return a particular gpio address and move the enum out of
> >     i915_reg.h (suggested by Jani)
> > 
> > Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
> > ---
> >  drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
> >  drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
> >  drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
> >  drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
> >  4 files changed, 52 insertions(+), 35 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> > index e39492aaff6c..e25a74fe753b 100644
> > --- a/drivers/gpu/drm/i915/gvt/handlers.c
> > +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> > @@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
> >  
> >  	MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
> >  		gmbus_mmio_write);
> > -	MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> > +	MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> >  	MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
> >  
> >  	MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > index 0424e45f88db..f8f71d577613 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -3088,18 +3088,11 @@ enum i915_power_well_id {
> >  /*
> >   * GPIO regs
> >   */
> > -#define GPIOA			_MMIO(0x5010)
> > -#define GPIOB			_MMIO(0x5014)
> > -#define GPIOC			_MMIO(0x5018)
> > -#define GPIOD			_MMIO(0x501c)
> > -#define GPIOE			_MMIO(0x5020)
> > -#define GPIOF			_MMIO(0x5024)
> > -#define GPIOG			_MMIO(0x5028)
> > -#define GPIOH			_MMIO(0x502c)
> > -#define GPIOJ			_MMIO(0x5034)
> > -#define GPIOK			_MMIO(0x5038)
> > -#define GPIOL			_MMIO(0x503C)
> > -#define GPIOM			_MMIO(0x5040)
> > +#define GPIO_OFFSET	0x5010u
> > +#define PCH_GPIO_BASE	(0xc0000u + GPIO_OFFSET)
> > +#define VLV_GPIO_BASE	(VLV_DISPLAY_BASE + GPIO_OFFSET)
> 
> This is a rather peculiar choice of baseline address. I'd either go with
> 0x5000u or 0x0000u (which avoids the need to change all the gmbus macros).

I'm all for a round 0x50000 number, however it doesn't match the spec.
I don't understand how 0x0 would make sense here. Are you suggesting to
embed the GPIO_OFFSET into the GPIO macro and get rid of the GPIO_BASE?

#define GPIO_OFFSET	0x5010u
/* THESE 2 BELOW COULD USE ANOTHER BETTER NAME */
#define PCH_GPIO_BASE	0xc0000u
#define VLV_GPIO_BASE	VLV_DISPLAY_BASE
#define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 0x5010 + 4 * (gpio))


That would make sense, but I don't think it's a better option due to
GPIO_BASE now and mmio_gpio_base matching nothing in the spec (and the
extra add on every gpio).

> Only needs a slight adjustment to your GPIO macro, but avoids the rather
> onerous - GPIO_OFFSET + GMBUS_OFFSET you have below. That one kinda
> indicates your offset is all confused.

well.. this is only because there I'm actually interested in the vlv
display / pch offset. The subtraction is done so I don't have to store
a gmbus_mmio_base and can rather work it out from the gpio one.

Lucas De Marchi

> 
> Anyway, just a drive-by comment, I was looking for some other gmbus patch.
> -Daniel
> 
> > +#define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 4 * (gpio))
> > +
> >  # define GPIO_CLOCK_DIR_MASK		(1 << 0)
> >  # define GPIO_CLOCK_DIR_IN		(0 << 1)
> >  # define GPIO_CLOCK_DIR_OUT		(1 << 1)
> > @@ -3115,7 +3108,11 @@ enum i915_power_well_id {
> >  # define GPIO_DATA_VAL_IN		(1 << 12)
> >  # define GPIO_DATA_PULLUP_DISABLE	(1 << 13)
> >  
> > -#define GMBUS0			_MMIO(dev_priv->gpio_mmio_base + 0x5100) /* clock/port select */
> > +#define GMBUS_OFFSET		0x5100u
> > +
> > +/* clock/port select */
> > +#define GMBUS0			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> > +				      + GMBUS_OFFSET)
> >  #define   GMBUS_AKSV_SELECT	(1 << 11)
> >  #define   GMBUS_RATE_100KHZ	(0 << 8)
> >  #define   GMBUS_RATE_50KHZ	(1 << 8)
> > @@ -3141,7 +3138,10 @@ enum i915_power_well_id {
> >  #define   GMBUS_PIN_12_TC4_ICP	12
> >  
> >  #define   GMBUS_NUM_PINS	13 /* including 0 */
> > -#define GMBUS1			_MMIO(dev_priv->gpio_mmio_base + 0x5104) /* command/status */
> > +
> > +/* command/status */
> > +#define GMBUS1			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> > +				      + GMBUS_OFFSET + 0x4)
> >  #define   GMBUS_SW_CLR_INT	(1 << 31)
> >  #define   GMBUS_SW_RDY		(1 << 30)
> >  #define   GMBUS_ENT		(1 << 29) /* enable timeout */
> > @@ -3155,7 +3155,10 @@ enum i915_power_well_id {
> >  #define   GMBUS_SLAVE_ADDR_SHIFT 1
> >  #define   GMBUS_SLAVE_READ	(1 << 0)
> >  #define   GMBUS_SLAVE_WRITE	(0 << 0)
> > -#define GMBUS2			_MMIO(dev_priv->gpio_mmio_base + 0x5108) /* status */
> > +
> > +/* status */
> > +#define GMBUS2			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> > +				      + GMBUS_OFFSET + 0x8)
> >  #define   GMBUS_INUSE		(1 << 15)
> >  #define   GMBUS_HW_WAIT_PHASE	(1 << 14)
> >  #define   GMBUS_STALL_TIMEOUT	(1 << 13)
> > @@ -3163,14 +3166,21 @@ enum i915_power_well_id {
> >  #define   GMBUS_HW_RDY		(1 << 11)
> >  #define   GMBUS_SATOER		(1 << 10)
> >  #define   GMBUS_ACTIVE		(1 << 9)
> > -#define GMBUS3			_MMIO(dev_priv->gpio_mmio_base + 0x510c) /* data buffer bytes 3-0 */
> > -#define GMBUS4			_MMIO(dev_priv->gpio_mmio_base + 0x5110) /* interrupt mask (Pineview+) */
> > +
> > +/* data buffer bytes 3-0 */
> > +#define GMBUS3			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> > +				      + GMBUS_OFFSET + 0xc)
> > +/* interrupt mask (Pineview+) */
> > +#define GMBUS4			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> > +				      + GMBUS_OFFSET + 0x10)
> >  #define   GMBUS_SLAVE_TIMEOUT_EN (1 << 4)
> >  #define   GMBUS_NAK_EN		(1 << 3)
> >  #define   GMBUS_IDLE_EN		(1 << 2)
> >  #define   GMBUS_HW_WAIT_EN	(1 << 1)
> >  #define   GMBUS_HW_RDY_EN	(1 << 0)
> > -#define GMBUS5			_MMIO(dev_priv->gpio_mmio_base + 0x5120) /* byte index */
> > +/* byte index */
> > +#define GMBUS5			_MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
> > +				      + GMBUS_OFFSET + 0x20)
> >  #define   GMBUS_2BYTE_INDEX_EN	(1 << 31)
> >  
> >  /*
> > @@ -7668,13 +7678,6 @@ enum {
> >  #define   ICP_TC_HPD_LONG_DETECT(tc_port)	(2 << (tc_port) * 4)
> >  #define   ICP_TC_HPD_SHORT_DETECT(tc_port)	(1 << (tc_port) * 4)
> >  
> > -#define PCH_GPIOA               _MMIO(0xc5010)
> > -#define PCH_GPIOB               _MMIO(0xc5014)
> > -#define PCH_GPIOC               _MMIO(0xc5018)
> > -#define PCH_GPIOD               _MMIO(0xc501c)
> > -#define PCH_GPIOE               _MMIO(0xc5020)
> > -#define PCH_GPIOF               _MMIO(0xc5024)
> > -
> >  #define PCH_GMBUS0		_MMIO(0xc5100)
> >  #define PCH_GMBUS1		_MMIO(0xc5104)
> >  #define PCH_GMBUS2		_MMIO(0xc5108)
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> > index 61e715ddd0d5..dedf87c58a95 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -152,6 +152,22 @@
> >   * Display related stuff
> >   */
> >  
> > +enum i915_gpio {
> > +	GPIOA = 0,
> > +	GPIOB,
> > +	GPIOC,
> > +	GPIOD,
> > +	GPIOE,
> > +	GPIOF,
> > +	GPIOG,
> > +	GPIOH,
> > +	__GPIOI_UNUSED,
> > +	GPIOJ,
> > +	GPIOK,
> > +	GPIOL,
> > +	GPIOM,
> > +};
> > +
> >  /* store information about an Ixxx DVO */
> >  /* The i830->i865 use multiple DVOs with multiple i2cs */
> >  /* the i915, i945 have a single sDVO i2c bus - which is different */
> > diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
> > index 97606c1be70d..f1c0b974daa6 100644
> > --- a/drivers/gpu/drm/i915/intel_i2c.c
> > +++ b/drivers/gpu/drm/i915/intel_i2c.c
> > @@ -37,7 +37,7 @@
> >  
> >  struct gmbus_pin {
> >  	const char *name;
> > -	i915_reg_t reg;
> > +	enum i915_gpio gpio;
> >  };
> >  
> >  /* Map gmbus pin pairs to names and registers. */
> > @@ -121,8 +121,7 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
> >  	else
> >  		size = ARRAY_SIZE(gmbus_pins);
> >  
> > -	return pin < size &&
> > -		i915_mmio_reg_valid(get_gmbus_pin(dev_priv, pin)->reg);
> > +	return pin < size && get_gmbus_pin(dev_priv, pin)->name;
> >  }
> >  
> >  /* Intel GPIO access functions */
> > @@ -292,8 +291,7 @@ intel_gpio_setup(struct intel_gmbus *bus, unsigned int pin)
> >  
> >  	algo = &bus->bit_algo;
> >  
> > -	bus->gpio_reg = _MMIO(dev_priv->gpio_mmio_base +
> > -			      i915_mmio_reg_offset(get_gmbus_pin(dev_priv, pin)->reg));
> > +	bus->gpio_reg = GPIO(get_gmbus_pin(dev_priv, pin)->gpio);
> >  	bus->adapter.algo_data = algo;
> >  	algo->setsda = set_data;
> >  	algo->setscl = set_clock;
> > @@ -775,11 +773,11 @@ int intel_setup_gmbus(struct drm_i915_private *dev_priv)
> >  		return 0;
> >  
> >  	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> > -		dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;
> > +		dev_priv->gpio_mmio_base = VLV_GPIO_BASE;
> >  	else if (!HAS_GMCH_DISPLAY(dev_priv))
> > -		dev_priv->gpio_mmio_base =
> > -			i915_mmio_reg_offset(PCH_GPIOA) -
> > -			i915_mmio_reg_offset(GPIOA);
> > +		dev_priv->gpio_mmio_base = PCH_GPIO_BASE;
> > +	else
> > +		dev_priv->gpio_mmio_base = GPIO_OFFSET;
> >  
> >  	mutex_init(&dev_priv->gmbus_mutex);
> >  	init_waitqueue_head(&dev_priv->gmbus_wait_queue);
> > -- 
> > 2.17.1
> > 
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-12 16:24   ` Lucas De Marchi
@ 2018-07-12 17:03     ` Daniel Vetter
  2018-07-12 17:23       ` Ville Syrjälä
  0 siblings, 1 reply; 10+ messages in thread
From: Daniel Vetter @ 2018-07-12 17:03 UTC (permalink / raw)
  To: Lucas De Marchi; +Cc: intel-gfx, Lucas De Marchi, Rodrigo Vivi

On Thu, Jul 12, 2018 at 6:24 PM, Lucas De Marchi
<lucas.de.marchi@gmail.com> wrote:
> On Thu, Jul 12, 2018 at 05:04:03PM +0200, Daniel Vetter wrote:
>> On Mon, Jul 09, 2018 at 09:22:21AM -0700, Lucas De Marchi wrote:
>> > Instead of defining all registers twice, define just a PCH_GPIO_BASE
>> > that has the same address as PCH_GPIO_A and use that to calculate all
>> > the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
>> > the same thing.
>> >
>> > This also rewrites the GMBUS[05] registers since they depend on
>> > gpio_mmio_base.
>> >
>> > v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
>> >     macro to return a particular gpio address and move the enum out of
>> >     i915_reg.h (suggested by Jani)
>> >
>> > Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
>> > ---
>> >  drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
>> >  drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
>> >  drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
>> >  drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
>> >  4 files changed, 52 insertions(+), 35 deletions(-)
>> >
>> > diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
>> > index e39492aaff6c..e25a74fe753b 100644
>> > --- a/drivers/gpu/drm/i915/gvt/handlers.c
>> > +++ b/drivers/gpu/drm/i915/gvt/handlers.c
>> > @@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
>> >
>> >     MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
>> >             gmbus_mmio_write);
>> > -   MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
>> > +   MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
>> >     MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
>> >
>> >     MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
>> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
>> > index 0424e45f88db..f8f71d577613 100644
>> > --- a/drivers/gpu/drm/i915/i915_reg.h
>> > +++ b/drivers/gpu/drm/i915/i915_reg.h
>> > @@ -3088,18 +3088,11 @@ enum i915_power_well_id {
>> >  /*
>> >   * GPIO regs
>> >   */
>> > -#define GPIOA                      _MMIO(0x5010)
>> > -#define GPIOB                      _MMIO(0x5014)
>> > -#define GPIOC                      _MMIO(0x5018)
>> > -#define GPIOD                      _MMIO(0x501c)
>> > -#define GPIOE                      _MMIO(0x5020)
>> > -#define GPIOF                      _MMIO(0x5024)
>> > -#define GPIOG                      _MMIO(0x5028)
>> > -#define GPIOH                      _MMIO(0x502c)
>> > -#define GPIOJ                      _MMIO(0x5034)
>> > -#define GPIOK                      _MMIO(0x5038)
>> > -#define GPIOL                      _MMIO(0x503C)
>> > -#define GPIOM                      _MMIO(0x5040)
>> > +#define GPIO_OFFSET        0x5010u
>> > +#define PCH_GPIO_BASE      (0xc0000u + GPIO_OFFSET)
>> > +#define VLV_GPIO_BASE      (VLV_DISPLAY_BASE + GPIO_OFFSET)
>>
>> This is a rather peculiar choice of baseline address. I'd either go with
>> 0x5000u or 0x0000u (which avoids the need to change all the gmbus macros).
>
> I'm all for a round 0x50000 number, however it doesn't match the spec.
> I don't understand how 0x0 would make sense here. Are you suggesting to
> embed the GPIO_OFFSET into the GPIO macro and get rid of the GPIO_BASE?
>
> #define GPIO_OFFSET     0x5010u
> /* THESE 2 BELOW COULD USE ANOTHER BETTER NAME */
> #define PCH_GPIO_BASE   0xc0000u
> #define VLV_GPIO_BASE   VLV_DISPLAY_BASE
> #define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 0x5010 + 4 * (gpio))

Yeah that's what I had in mind.

> That would make sense, but I don't think it's a better option due to
> GPIO_BASE now and mmio_gpio_base matching nothing in the spec (and the
> extra add on every gpio).
>
>> Only needs a slight adjustment to your GPIO macro, but avoids the rather
>> onerous - GPIO_OFFSET + GMBUS_OFFSET you have below. That one kinda
>> indicates your offset is all confused.
>
> well.. this is only because there I'm actually interested in the vlv
> display / pch offset. The subtraction is done so I don't have to store
> a gmbus_mmio_base and can rather work it out from the gpio one.

If you want to stick with your approach, at least extract the common
->gpio_mmio_base - GPIO_OFFSET + GMBUS_OFFSET computation into a
GMBUS_BASE(dev) macro or something like that. I think that would be a
good solution too.

Either approach has my a-b (I'll be on vacations next 3 weeks to
probably no r-b from me).
-Daniel

>
> Lucas De Marchi
>
>>
>> Anyway, just a drive-by comment, I was looking for some other gmbus patch.
>> -Daniel
>>
>> > +#define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 4 * (gpio))
>> > +
>> >  # define GPIO_CLOCK_DIR_MASK               (1 << 0)
>> >  # define GPIO_CLOCK_DIR_IN         (0 << 1)
>> >  # define GPIO_CLOCK_DIR_OUT                (1 << 1)
>> > @@ -3115,7 +3108,11 @@ enum i915_power_well_id {
>> >  # define GPIO_DATA_VAL_IN          (1 << 12)
>> >  # define GPIO_DATA_PULLUP_DISABLE  (1 << 13)
>> >
>> > -#define GMBUS0                     _MMIO(dev_priv->gpio_mmio_base + 0x5100) /* clock/port select */
>> > +#define GMBUS_OFFSET               0x5100u
>> > +
>> > +/* clock/port select */
>> > +#define GMBUS0                     _MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
>> > +                                 + GMBUS_OFFSET)
>> >  #define   GMBUS_AKSV_SELECT        (1 << 11)
>> >  #define   GMBUS_RATE_100KHZ        (0 << 8)
>> >  #define   GMBUS_RATE_50KHZ (1 << 8)
>> > @@ -3141,7 +3138,10 @@ enum i915_power_well_id {
>> >  #define   GMBUS_PIN_12_TC4_ICP     12
>> >
>> >  #define   GMBUS_NUM_PINS   13 /* including 0 */
>> > -#define GMBUS1                     _MMIO(dev_priv->gpio_mmio_base + 0x5104) /* command/status */
>> > +
>> > +/* command/status */
>> > +#define GMBUS1                     _MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
>> > +                                 + GMBUS_OFFSET + 0x4)
>> >  #define   GMBUS_SW_CLR_INT (1 << 31)
>> >  #define   GMBUS_SW_RDY             (1 << 30)
>> >  #define   GMBUS_ENT                (1 << 29) /* enable timeout */
>> > @@ -3155,7 +3155,10 @@ enum i915_power_well_id {
>> >  #define   GMBUS_SLAVE_ADDR_SHIFT 1
>> >  #define   GMBUS_SLAVE_READ (1 << 0)
>> >  #define   GMBUS_SLAVE_WRITE        (0 << 0)
>> > -#define GMBUS2                     _MMIO(dev_priv->gpio_mmio_base + 0x5108) /* status */
>> > +
>> > +/* status */
>> > +#define GMBUS2                     _MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
>> > +                                 + GMBUS_OFFSET + 0x8)
>> >  #define   GMBUS_INUSE              (1 << 15)
>> >  #define   GMBUS_HW_WAIT_PHASE      (1 << 14)
>> >  #define   GMBUS_STALL_TIMEOUT      (1 << 13)
>> > @@ -3163,14 +3166,21 @@ enum i915_power_well_id {
>> >  #define   GMBUS_HW_RDY             (1 << 11)
>> >  #define   GMBUS_SATOER             (1 << 10)
>> >  #define   GMBUS_ACTIVE             (1 << 9)
>> > -#define GMBUS3                     _MMIO(dev_priv->gpio_mmio_base + 0x510c) /* data buffer bytes 3-0 */
>> > -#define GMBUS4                     _MMIO(dev_priv->gpio_mmio_base + 0x5110) /* interrupt mask (Pineview+) */
>> > +
>> > +/* data buffer bytes 3-0 */
>> > +#define GMBUS3                     _MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
>> > +                                 + GMBUS_OFFSET + 0xc)
>> > +/* interrupt mask (Pineview+) */
>> > +#define GMBUS4                     _MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
>> > +                                 + GMBUS_OFFSET + 0x10)
>> >  #define   GMBUS_SLAVE_TIMEOUT_EN (1 << 4)
>> >  #define   GMBUS_NAK_EN             (1 << 3)
>> >  #define   GMBUS_IDLE_EN            (1 << 2)
>> >  #define   GMBUS_HW_WAIT_EN (1 << 1)
>> >  #define   GMBUS_HW_RDY_EN  (1 << 0)
>> > -#define GMBUS5                     _MMIO(dev_priv->gpio_mmio_base + 0x5120) /* byte index */
>> > +/* byte index */
>> > +#define GMBUS5                     _MMIO(dev_priv->gpio_mmio_base - GPIO_OFFSET \
>> > +                                 + GMBUS_OFFSET + 0x20)
>> >  #define   GMBUS_2BYTE_INDEX_EN     (1 << 31)
>> >
>> >  /*
>> > @@ -7668,13 +7678,6 @@ enum {
>> >  #define   ICP_TC_HPD_LONG_DETECT(tc_port)  (2 << (tc_port) * 4)
>> >  #define   ICP_TC_HPD_SHORT_DETECT(tc_port) (1 << (tc_port) * 4)
>> >
>> > -#define PCH_GPIOA               _MMIO(0xc5010)
>> > -#define PCH_GPIOB               _MMIO(0xc5014)
>> > -#define PCH_GPIOC               _MMIO(0xc5018)
>> > -#define PCH_GPIOD               _MMIO(0xc501c)
>> > -#define PCH_GPIOE               _MMIO(0xc5020)
>> > -#define PCH_GPIOF               _MMIO(0xc5024)
>> > -
>> >  #define PCH_GMBUS0         _MMIO(0xc5100)
>> >  #define PCH_GMBUS1         _MMIO(0xc5104)
>> >  #define PCH_GMBUS2         _MMIO(0xc5108)
>> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
>> > index 61e715ddd0d5..dedf87c58a95 100644
>> > --- a/drivers/gpu/drm/i915/intel_drv.h
>> > +++ b/drivers/gpu/drm/i915/intel_drv.h
>> > @@ -152,6 +152,22 @@
>> >   * Display related stuff
>> >   */
>> >
>> > +enum i915_gpio {
>> > +   GPIOA = 0,
>> > +   GPIOB,
>> > +   GPIOC,
>> > +   GPIOD,
>> > +   GPIOE,
>> > +   GPIOF,
>> > +   GPIOG,
>> > +   GPIOH,
>> > +   __GPIOI_UNUSED,
>> > +   GPIOJ,
>> > +   GPIOK,
>> > +   GPIOL,
>> > +   GPIOM,
>> > +};
>> > +
>> >  /* store information about an Ixxx DVO */
>> >  /* The i830->i865 use multiple DVOs with multiple i2cs */
>> >  /* the i915, i945 have a single sDVO i2c bus - which is different */
>> > diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
>> > index 97606c1be70d..f1c0b974daa6 100644
>> > --- a/drivers/gpu/drm/i915/intel_i2c.c
>> > +++ b/drivers/gpu/drm/i915/intel_i2c.c
>> > @@ -37,7 +37,7 @@
>> >
>> >  struct gmbus_pin {
>> >     const char *name;
>> > -   i915_reg_t reg;
>> > +   enum i915_gpio gpio;
>> >  };
>> >
>> >  /* Map gmbus pin pairs to names and registers. */
>> > @@ -121,8 +121,7 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
>> >     else
>> >             size = ARRAY_SIZE(gmbus_pins);
>> >
>> > -   return pin < size &&
>> > -           i915_mmio_reg_valid(get_gmbus_pin(dev_priv, pin)->reg);
>> > +   return pin < size && get_gmbus_pin(dev_priv, pin)->name;
>> >  }
>> >
>> >  /* Intel GPIO access functions */
>> > @@ -292,8 +291,7 @@ intel_gpio_setup(struct intel_gmbus *bus, unsigned int pin)
>> >
>> >     algo = &bus->bit_algo;
>> >
>> > -   bus->gpio_reg = _MMIO(dev_priv->gpio_mmio_base +
>> > -                         i915_mmio_reg_offset(get_gmbus_pin(dev_priv, pin)->reg));
>> > +   bus->gpio_reg = GPIO(get_gmbus_pin(dev_priv, pin)->gpio);
>> >     bus->adapter.algo_data = algo;
>> >     algo->setsda = set_data;
>> >     algo->setscl = set_clock;
>> > @@ -775,11 +773,11 @@ int intel_setup_gmbus(struct drm_i915_private *dev_priv)
>> >             return 0;
>> >
>> >     if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
>> > -           dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;
>> > +           dev_priv->gpio_mmio_base = VLV_GPIO_BASE;
>> >     else if (!HAS_GMCH_DISPLAY(dev_priv))
>> > -           dev_priv->gpio_mmio_base =
>> > -                   i915_mmio_reg_offset(PCH_GPIOA) -
>> > -                   i915_mmio_reg_offset(GPIOA);
>> > +           dev_priv->gpio_mmio_base = PCH_GPIO_BASE;
>> > +   else
>> > +           dev_priv->gpio_mmio_base = GPIO_OFFSET;
>> >
>> >     mutex_init(&dev_priv->gmbus_mutex);
>> >     init_waitqueue_head(&dev_priv->gmbus_wait_queue);
>> > --
>> > 2.17.1
>> >
>> > _______________________________________________
>> > Intel-gfx mailing list
>> > Intel-gfx@lists.freedesktop.org
>> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>>
>> --
>> Daniel Vetter
>> Software Engineer, Intel Corporation
>> http://blog.ffwll.ch
>> _______________________________________________
>> Intel-gfx mailing list
>> Intel-gfx@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/intel-gfx



-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-12 17:03     ` Daniel Vetter
@ 2018-07-12 17:23       ` Ville Syrjälä
  2018-07-13  8:48         ` Daniel Vetter
  0 siblings, 1 reply; 10+ messages in thread
From: Ville Syrjälä @ 2018-07-12 17:23 UTC (permalink / raw)
  To: Daniel Vetter; +Cc: intel-gfx, Rodrigo Vivi, Lucas De Marchi

On Thu, Jul 12, 2018 at 07:03:58PM +0200, Daniel Vetter wrote:
> On Thu, Jul 12, 2018 at 6:24 PM, Lucas De Marchi
> <lucas.de.marchi@gmail.com> wrote:
> > On Thu, Jul 12, 2018 at 05:04:03PM +0200, Daniel Vetter wrote:
> >> On Mon, Jul 09, 2018 at 09:22:21AM -0700, Lucas De Marchi wrote:
> >> > Instead of defining all registers twice, define just a PCH_GPIO_BASE
> >> > that has the same address as PCH_GPIO_A and use that to calculate all
> >> > the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
> >> > the same thing.
> >> >
> >> > This also rewrites the GMBUS[05] registers since they depend on
> >> > gpio_mmio_base.
> >> >
> >> > v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
> >> >     macro to return a particular gpio address and move the enum out of
> >> >     i915_reg.h (suggested by Jani)
> >> >
> >> > Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
> >> > ---
> >> >  drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
> >> >  drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
> >> >  drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
> >> >  drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
> >> >  4 files changed, 52 insertions(+), 35 deletions(-)
> >> >
> >> > diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> >> > index e39492aaff6c..e25a74fe753b 100644
> >> > --- a/drivers/gpu/drm/i915/gvt/handlers.c
> >> > +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> >> > @@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
> >> >
> >> >     MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
> >> >             gmbus_mmio_write);
> >> > -   MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> >> > +   MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> >> >     MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
> >> >
> >> >     MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
> >> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> >> > index 0424e45f88db..f8f71d577613 100644
> >> > --- a/drivers/gpu/drm/i915/i915_reg.h
> >> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> >> > @@ -3088,18 +3088,11 @@ enum i915_power_well_id {
> >> >  /*
> >> >   * GPIO regs
> >> >   */
> >> > -#define GPIOA                      _MMIO(0x5010)
> >> > -#define GPIOB                      _MMIO(0x5014)
> >> > -#define GPIOC                      _MMIO(0x5018)
> >> > -#define GPIOD                      _MMIO(0x501c)
> >> > -#define GPIOE                      _MMIO(0x5020)
> >> > -#define GPIOF                      _MMIO(0x5024)
> >> > -#define GPIOG                      _MMIO(0x5028)
> >> > -#define GPIOH                      _MMIO(0x502c)
> >> > -#define GPIOJ                      _MMIO(0x5034)
> >> > -#define GPIOK                      _MMIO(0x5038)
> >> > -#define GPIOL                      _MMIO(0x503C)
> >> > -#define GPIOM                      _MMIO(0x5040)
> >> > +#define GPIO_OFFSET        0x5010u
> >> > +#define PCH_GPIO_BASE      (0xc0000u + GPIO_OFFSET)
> >> > +#define VLV_GPIO_BASE      (VLV_DISPLAY_BASE + GPIO_OFFSET)
> >>
> >> This is a rather peculiar choice of baseline address. I'd either go with
> >> 0x5000u or 0x0000u (which avoids the need to change all the gmbus macros).
> >
> > I'm all for a round 0x50000 number, however it doesn't match the spec.
> > I don't understand how 0x0 would make sense here. Are you suggesting to
> > embed the GPIO_OFFSET into the GPIO macro and get rid of the GPIO_BASE?
> >
> > #define GPIO_OFFSET     0x5010u
> > /* THESE 2 BELOW COULD USE ANOTHER BETTER NAME */
> > #define PCH_GPIO_BASE   0xc0000u
> > #define VLV_GPIO_BASE   VLV_DISPLAY_BASE
> > #define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 0x5010 + 4 * (gpio))
> 
> Yeah that's what I had in mind.

I think I like this one the most. Keeps the 0x5010 in the GPIO() macro
so less confusion when looking it up in the spec (except on PCH platforms
perhaps).

Also I would drop the VLV_GPIO_BASE and PCH_GPIO_BASE definitions and
just do gpio_mmio_Base = VLV_DISPLAY_BASE/PCH_DISPLAY_BASE or something
like that.

I've occasionally pondered about some kind of generic south_display_base
thing that could maybe cover all the things that live on the PCH side on
those platforms. But I never bothered to look at all the register offsets
hard enough to figure out whether it'd be actually useful.

-- 
Ville Syrjälä
Intel
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-12 17:23       ` Ville Syrjälä
@ 2018-07-13  8:48         ` Daniel Vetter
  2018-07-13 12:21           ` Ville Syrjälä
  0 siblings, 1 reply; 10+ messages in thread
From: Daniel Vetter @ 2018-07-13  8:48 UTC (permalink / raw)
  To: Ville Syrjälä; +Cc: intel-gfx, Rodrigo Vivi, Lucas De Marchi

On Thu, Jul 12, 2018 at 08:23:05PM +0300, Ville Syrjälä wrote:
> On Thu, Jul 12, 2018 at 07:03:58PM +0200, Daniel Vetter wrote:
> > On Thu, Jul 12, 2018 at 6:24 PM, Lucas De Marchi
> > <lucas.de.marchi@gmail.com> wrote:
> > > On Thu, Jul 12, 2018 at 05:04:03PM +0200, Daniel Vetter wrote:
> > >> On Mon, Jul 09, 2018 at 09:22:21AM -0700, Lucas De Marchi wrote:
> > >> > Instead of defining all registers twice, define just a PCH_GPIO_BASE
> > >> > that has the same address as PCH_GPIO_A and use that to calculate all
> > >> > the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
> > >> > the same thing.
> > >> >
> > >> > This also rewrites the GMBUS[05] registers since they depend on
> > >> > gpio_mmio_base.
> > >> >
> > >> > v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
> > >> >     macro to return a particular gpio address and move the enum out of
> > >> >     i915_reg.h (suggested by Jani)
> > >> >
> > >> > Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
> > >> > ---
> > >> >  drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
> > >> >  drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
> > >> >  drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
> > >> >  drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
> > >> >  4 files changed, 52 insertions(+), 35 deletions(-)
> > >> >
> > >> > diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> > >> > index e39492aaff6c..e25a74fe753b 100644
> > >> > --- a/drivers/gpu/drm/i915/gvt/handlers.c
> > >> > +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> > >> > @@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
> > >> >
> > >> >     MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
> > >> >             gmbus_mmio_write);
> > >> > -   MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> > >> > +   MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> > >> >     MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
> > >> >
> > >> >     MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
> > >> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > >> > index 0424e45f88db..f8f71d577613 100644
> > >> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > >> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > >> > @@ -3088,18 +3088,11 @@ enum i915_power_well_id {
> > >> >  /*
> > >> >   * GPIO regs
> > >> >   */
> > >> > -#define GPIOA                      _MMIO(0x5010)
> > >> > -#define GPIOB                      _MMIO(0x5014)
> > >> > -#define GPIOC                      _MMIO(0x5018)
> > >> > -#define GPIOD                      _MMIO(0x501c)
> > >> > -#define GPIOE                      _MMIO(0x5020)
> > >> > -#define GPIOF                      _MMIO(0x5024)
> > >> > -#define GPIOG                      _MMIO(0x5028)
> > >> > -#define GPIOH                      _MMIO(0x502c)
> > >> > -#define GPIOJ                      _MMIO(0x5034)
> > >> > -#define GPIOK                      _MMIO(0x5038)
> > >> > -#define GPIOL                      _MMIO(0x503C)
> > >> > -#define GPIOM                      _MMIO(0x5040)
> > >> > +#define GPIO_OFFSET        0x5010u
> > >> > +#define PCH_GPIO_BASE      (0xc0000u + GPIO_OFFSET)
> > >> > +#define VLV_GPIO_BASE      (VLV_DISPLAY_BASE + GPIO_OFFSET)
> > >>
> > >> This is a rather peculiar choice of baseline address. I'd either go with
> > >> 0x5000u or 0x0000u (which avoids the need to change all the gmbus macros).
> > >
> > > I'm all for a round 0x50000 number, however it doesn't match the spec.
> > > I don't understand how 0x0 would make sense here. Are you suggesting to
> > > embed the GPIO_OFFSET into the GPIO macro and get rid of the GPIO_BASE?
> > >
> > > #define GPIO_OFFSET     0x5010u
> > > /* THESE 2 BELOW COULD USE ANOTHER BETTER NAME */
> > > #define PCH_GPIO_BASE   0xc0000u
> > > #define VLV_GPIO_BASE   VLV_DISPLAY_BASE
> > > #define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 0x5010 + 4 * (gpio))
> > 
> > Yeah that's what I had in mind.
> 
> I think I like this one the most. Keeps the 0x5010 in the GPIO() macro
> so less confusion when looking it up in the spec (except on PCH platforms
> perhaps).
> 
> Also I would drop the VLV_GPIO_BASE and PCH_GPIO_BASE definitions and
> just do gpio_mmio_Base = VLV_DISPLAY_BASE/PCH_DISPLAY_BASE or something
> like that.
> 
> I've occasionally pondered about some kind of generic south_display_base
> thing that could maybe cover all the things that live on the PCH side on
> those platforms. But I never bothered to look at all the register offsets
> hard enough to figure out whether it'd be actually useful.

Problem with a generic south_display_base is that some things moved
between south and north block. So not sure the generic south_display_base
would actually be all that useful.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO
  2018-07-13  8:48         ` Daniel Vetter
@ 2018-07-13 12:21           ` Ville Syrjälä
  0 siblings, 0 replies; 10+ messages in thread
From: Ville Syrjälä @ 2018-07-13 12:21 UTC (permalink / raw)
  To: Daniel Vetter; +Cc: intel-gfx, Rodrigo Vivi, Lucas De Marchi

n Fri, Jul 13, 2018 at 10:48:02AM +0200, Daniel Vetter wrote:
> On Thu, Jul 12, 2018 at 08:23:05PM +0300, Ville Syrjälä wrote:
> > On Thu, Jul 12, 2018 at 07:03:58PM +0200, Daniel Vetter wrote:
> > > On Thu, Jul 12, 2018 at 6:24 PM, Lucas De Marchi
> > > <lucas.de.marchi@gmail.com> wrote:
> > > > On Thu, Jul 12, 2018 at 05:04:03PM +0200, Daniel Vetter wrote:
> > > >> On Mon, Jul 09, 2018 at 09:22:21AM -0700, Lucas De Marchi wrote:
> > > >> > Instead of defining all registers twice, define just a PCH_GPIO_BASE
> > > >> > that has the same address as PCH_GPIO_A and use that to calculate all
> > > >> > the others. This also brings VLV and !HAS_GMCH_DISPLAY in line, doing
> > > >> > the same thing.
> > > >> >
> > > >> > This also rewrites the GMBUS[05] registers since they depend on
> > > >> > gpio_mmio_base.
> > > >> >
> > > >> > v2: Fix GMBUS registers to be relative to gpio base; create GPIO()
> > > >> >     macro to return a particular gpio address and move the enum out of
> > > >> >     i915_reg.h (suggested by Jani)
> > > >> >
> > > >> > Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
> > > >> > ---
> > > >> >  drivers/gpu/drm/i915/gvt/handlers.c |  2 +-
> > > >> >  drivers/gpu/drm/i915/i915_reg.h     | 53 +++++++++++++++--------------
> > > >> >  drivers/gpu/drm/i915/intel_drv.h    | 16 +++++++++
> > > >> >  drivers/gpu/drm/i915/intel_i2c.c    | 16 ++++-----
> > > >> >  4 files changed, 52 insertions(+), 35 deletions(-)
> > > >> >
> > > >> > diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> > > >> > index e39492aaff6c..e25a74fe753b 100644
> > > >> > --- a/drivers/gpu/drm/i915/gvt/handlers.c
> > > >> > +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> > > >> > @@ -2084,7 +2084,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
> > > >> >
> > > >> >     MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
> > > >> >             gmbus_mmio_write);
> > > >> > -   MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> > > >> > +   MMIO_F(_MMIO(PCH_GPIO_BASE), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
> > > >> >     MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
> > > >> >
> > > >> >     MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
> > > >> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > > >> > index 0424e45f88db..f8f71d577613 100644
> > > >> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > > >> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > > >> > @@ -3088,18 +3088,11 @@ enum i915_power_well_id {
> > > >> >  /*
> > > >> >   * GPIO regs
> > > >> >   */
> > > >> > -#define GPIOA                      _MMIO(0x5010)
> > > >> > -#define GPIOB                      _MMIO(0x5014)
> > > >> > -#define GPIOC                      _MMIO(0x5018)
> > > >> > -#define GPIOD                      _MMIO(0x501c)
> > > >> > -#define GPIOE                      _MMIO(0x5020)
> > > >> > -#define GPIOF                      _MMIO(0x5024)
> > > >> > -#define GPIOG                      _MMIO(0x5028)
> > > >> > -#define GPIOH                      _MMIO(0x502c)
> > > >> > -#define GPIOJ                      _MMIO(0x5034)
> > > >> > -#define GPIOK                      _MMIO(0x5038)
> > > >> > -#define GPIOL                      _MMIO(0x503C)
> > > >> > -#define GPIOM                      _MMIO(0x5040)
> > > >> > +#define GPIO_OFFSET        0x5010u
> > > >> > +#define PCH_GPIO_BASE      (0xc0000u + GPIO_OFFSET)
> > > >> > +#define VLV_GPIO_BASE      (VLV_DISPLAY_BASE + GPIO_OFFSET)
> > > >>
> > > >> This is a rather peculiar choice of baseline address. I'd either go with
> > > >> 0x5000u or 0x0000u (which avoids the need to change all the gmbus macros).
> > > >
> > > > I'm all for a round 0x50000 number, however it doesn't match the spec.
> > > > I don't understand how 0x0 would make sense here. Are you suggesting to
> > > > embed the GPIO_OFFSET into the GPIO macro and get rid of the GPIO_BASE?
> > > >
> > > > #define GPIO_OFFSET     0x5010u
> > > > /* THESE 2 BELOW COULD USE ANOTHER BETTER NAME */
> > > > #define PCH_GPIO_BASE   0xc0000u
> > > > #define VLV_GPIO_BASE   VLV_DISPLAY_BASE
> > > > #define GPIO(gpio)      _MMIO(dev_priv->gpio_mmio_base + 0x5010 + 4 * (gpio))
> > > 
> > > Yeah that's what I had in mind.
> > 
> > I think I like this one the most. Keeps the 0x5010 in the GPIO() macro
> > so less confusion when looking it up in the spec (except on PCH platforms
> > perhaps).
> > 
> > Also I would drop the VLV_GPIO_BASE and PCH_GPIO_BASE definitions and
> > just do gpio_mmio_Base = VLV_DISPLAY_BASE/PCH_DISPLAY_BASE or something
> > like that.
> > 
> > I've occasionally pondered about some kind of generic south_display_base
> > thing that could maybe cover all the things that live on the PCH side on
> > those platforms. But I never bothered to look at all the register offsets
> > hard enough to figure out whether it'd be actually useful.
> 
> Problem with a generic south_display_base is that some things moved
> between south and north block. So not sure the generic south_display_base
> would actually be all that useful.

Yeah. And of course there are things like backlight that lives on
both sides of the divide on some platforms.

-- 
Ville Syrjälä
Intel
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2018-07-13 12:21 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-07-09 16:22 [PATCH 1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Lucas De Marchi
2018-07-09 16:22 ` [PATCH 2/2] drm/i915: remove PCH_GMBUS defines Lucas De Marchi
2018-07-09 16:46 ` ✓ Fi.CI.BAT: success for series starting with [1/2] drm/i915: remove confusing GPIO vs PCH_GPIO Patchwork
2018-07-10  1:15 ` ✓ Fi.CI.IGT: " Patchwork
2018-07-12 15:04 ` [PATCH 1/2] " Daniel Vetter
2018-07-12 16:24   ` Lucas De Marchi
2018-07-12 17:03     ` Daniel Vetter
2018-07-12 17:23       ` Ville Syrjälä
2018-07-13  8:48         ` Daniel Vetter
2018-07-13 12:21           ` Ville Syrjälä

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