[Intel-gfx] [PATCH v4 3/3] drm/i915: remove confusing GPIO vs PCH_GPIO
Lucas De Marchi
lucas.demarchi at intel.com
Fri Jul 27 19:36:47 UTC 2018
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.
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)
v3: Move base offset inside the GPIO() macro so the GMBUS defines don't
actually need to be changed (suggested by Daniel/Ville)
v4: Move definition of i915_gpio to intel_display.h and remove
GMBUS/GPIO handling from gvt since now they have their own
defines.
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 3 ++-
drivers/gpu/drm/i915/i915_reg.h | 24 +++++-------------------
drivers/gpu/drm/i915/intel_display.h | 16 ++++++++++++++++
drivers/gpu/drm/i915/intel_i2c.c | 16 ++++++++--------
4 files changed, 31 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0f49f9988dfa..19ad2a52ab04 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1604,7 +1604,8 @@ struct drm_i915_private {
struct mutex gmbus_mutex;
/**
- * Base address of the gmbus and gpio block.
+ * Base address of where the gmbus and gpio blocks are located (either
+ * on PCH or on SoC for platforms without PCH).
*/
uint32_t gpio_mmio_base;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 07606677168c..827d442e1b12 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3168,18 +3168,9 @@ 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(gpio) _MMIO(dev_priv->gpio_mmio_base + 0x5010 + \
+ 4 * (gpio))
+
# define GPIO_CLOCK_DIR_MASK (1 << 0)
# define GPIO_CLOCK_DIR_IN (0 << 1)
# define GPIO_CLOCK_DIR_OUT (1 << 1)
@@ -7574,6 +7565,8 @@ enum {
/* PCH */
+#define PCH_DISPLAY_BASE 0xc0000u
+
/* south display engine interrupt: IBX */
#define SDE_AUDIO_POWER_D (1 << 27)
#define SDE_AUDIO_POWER_C (1 << 26)
@@ -7868,13 +7861,6 @@ 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_DPLL_A 0xc6014
#define _PCH_DPLL_B 0xc6018
#define PCH_DPLL(pll) _MMIO((pll) == 0 ? _PCH_DPLL_A : _PCH_DPLL_B)
diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
index 0a79a46d5805..e7f49f107e57 100644
--- a/drivers/gpu/drm/i915/intel_display.h
+++ b/drivers/gpu/drm/i915/intel_display.h
@@ -25,6 +25,22 @@
#ifndef _INTEL_DISPLAY_H_
#define _INTEL_DISPLAY_H_
+enum i915_gpio {
+ GPIOA,
+ GPIOB,
+ GPIOC,
+ GPIOD,
+ GPIOE,
+ GPIOF,
+ GPIOG,
+ GPIOH,
+ __GPIOI_UNUSED,
+ GPIOJ,
+ GPIOK,
+ GPIOL,
+ GPIOM,
+};
+
enum pipe {
INVALID_PIPE = -1,
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index bef32b7c248e..33d87ab93fdd 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;
@@ -825,9 +823,11 @@ int intel_setup_gmbus(struct drm_i915_private *dev_priv)
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;
else if (!HAS_GMCH_DISPLAY(dev_priv))
- dev_priv->gpio_mmio_base =
- i915_mmio_reg_offset(PCH_GPIOA) -
- i915_mmio_reg_offset(GPIOA);
+ /*
+ * Broxton uses the same PCH offsets for South Display Engine,
+ * even though it doesn't have a PCH.
+ */
+ dev_priv->gpio_mmio_base = PCH_DISPLAY_BASE;
mutex_init(&dev_priv->gmbus_mutex);
init_waitqueue_head(&dev_priv->gmbus_wait_queue);
--
2.17.1
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