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drm/i915/dsi: clean up vlv gpio table and definitions
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Define and store the pad base offset in the array, and reference the
pconf0 and padval registers through macros. Add VLV prefixes to
macros. Use spec nomenclature for pconf0 and padval.

v2: Address Ville's review comments, squash another patch here.

v3: Use the names Ville dug up in the specs.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/34932140b78a3de7f825c78380a08c930694651b.1459884518.git.jani.nikula@intel.com
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Jani Nikula committed Apr 7, 2016
1 parent 2d1fe07 commit b0c91cd
Showing 1 changed file with 39 additions and 48 deletions.
87 changes: 39 additions & 48 deletions drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -58,50 +58,41 @@ static inline struct vbt_panel *to_vbt_panel(struct drm_panel *panel)

#define NS_KHZ_RATIO 1000000

#define GPI0_NC_0_HV_DDI0_HPD 0x4130
#define GPIO_NC_0_HV_DDI0_PAD 0x4138
#define GPIO_NC_1_HV_DDI0_DDC_SDA 0x4120
#define GPIO_NC_1_HV_DDI0_DDC_SDA_PAD 0x4128
#define GPIO_NC_2_HV_DDI0_DDC_SCL 0x4110
#define GPIO_NC_2_HV_DDI0_DDC_SCL_PAD 0x4118
#define GPIO_NC_3_PANEL0_VDDEN 0x4140
#define GPIO_NC_3_PANEL0_VDDEN_PAD 0x4148
#define GPIO_NC_4_PANEL0_BLKEN 0x4150
#define GPIO_NC_4_PANEL0_BLKEN_PAD 0x4158
#define GPIO_NC_5_PANEL0_BLKCTL 0x4160
#define GPIO_NC_5_PANEL0_BLKCTL_PAD 0x4168
#define GPIO_NC_6_PCONF0 0x4180
#define GPIO_NC_6_PAD 0x4188
#define GPIO_NC_7_PCONF0 0x4190
#define GPIO_NC_7_PAD 0x4198
#define GPIO_NC_8_PCONF0 0x4170
#define GPIO_NC_8_PAD 0x4178
#define GPIO_NC_9_PCONF0 0x4100
#define GPIO_NC_9_PAD 0x4108
#define GPIO_NC_10_PCONF0 0x40E0
#define GPIO_NC_10_PAD 0x40E8
#define GPIO_NC_11_PCONF0 0x40F0
#define GPIO_NC_11_PAD 0x40F8
/* base offsets for gpio pads */
#define VLV_GPIO_NC_0_HV_DDI0_HPD 0x4130
#define VLV_GPIO_NC_1_HV_DDI0_DDC_SDA 0x4120
#define VLV_GPIO_NC_2_HV_DDI0_DDC_SCL 0x4110
#define VLV_GPIO_NC_3_PANEL0_VDDEN 0x4140
#define VLV_GPIO_NC_4_PANEL0_BKLTEN 0x4150
#define VLV_GPIO_NC_5_PANEL0_BKLTCTL 0x4160
#define VLV_GPIO_NC_6_HV_DDI1_HPD 0x4180
#define VLV_GPIO_NC_7_HV_DDI1_DDC_SDA 0x4190
#define VLV_GPIO_NC_8_HV_DDI1_DDC_SCL 0x4170
#define VLV_GPIO_NC_9_PANEL1_VDDEN 0x4100
#define VLV_GPIO_NC_10_PANEL1_BKLTEN 0x40E0
#define VLV_GPIO_NC_11_PANEL1_BKLTCTL 0x40F0

#define VLV_GPIO_PCONF0(base_offset) (base_offset)
#define VLV_GPIO_PAD_VAL(base_offset) ((base_offset) + 8)

struct gpio_table {
u16 function_reg;
u16 pad_reg;
u8 init;
u16 base_offset;
bool init;
};

static struct gpio_table gtable[] = {
{ GPI0_NC_0_HV_DDI0_HPD, GPIO_NC_0_HV_DDI0_PAD, 0 },
{ GPIO_NC_1_HV_DDI0_DDC_SDA, GPIO_NC_1_HV_DDI0_DDC_SDA_PAD, 0 },
{ GPIO_NC_2_HV_DDI0_DDC_SCL, GPIO_NC_2_HV_DDI0_DDC_SCL_PAD, 0 },
{ GPIO_NC_3_PANEL0_VDDEN, GPIO_NC_3_PANEL0_VDDEN_PAD, 0 },
{ GPIO_NC_4_PANEL0_BLKEN, GPIO_NC_4_PANEL0_BLKEN_PAD, 0 },
{ GPIO_NC_5_PANEL0_BLKCTL, GPIO_NC_5_PANEL0_BLKCTL_PAD, 0 },
{ GPIO_NC_6_PCONF0, GPIO_NC_6_PAD, 0 },
{ GPIO_NC_7_PCONF0, GPIO_NC_7_PAD, 0 },
{ GPIO_NC_8_PCONF0, GPIO_NC_8_PAD, 0 },
{ GPIO_NC_9_PCONF0, GPIO_NC_9_PAD, 0 },
{ GPIO_NC_10_PCONF0, GPIO_NC_10_PAD, 0},
{ GPIO_NC_11_PCONF0, GPIO_NC_11_PAD, 0}
static struct gpio_table vlv_gpio_table[] = {
{ VLV_GPIO_NC_0_HV_DDI0_HPD },
{ VLV_GPIO_NC_1_HV_DDI0_DDC_SDA },
{ VLV_GPIO_NC_2_HV_DDI0_DDC_SCL },
{ VLV_GPIO_NC_3_PANEL0_VDDEN },
{ VLV_GPIO_NC_4_PANEL0_BKLTEN },
{ VLV_GPIO_NC_5_PANEL0_BKLTCTL },
{ VLV_GPIO_NC_6_HV_DDI1_HPD },
{ VLV_GPIO_NC_7_HV_DDI1_DDC_SDA },
{ VLV_GPIO_NC_8_HV_DDI1_DDC_SCL },
{ VLV_GPIO_NC_9_PANEL1_VDDEN },
{ VLV_GPIO_NC_10_PANEL1_BKLTEN },
{ VLV_GPIO_NC_11_PANEL1_BKLTCTL },
};

static inline enum port intel_dsi_seq_port_to_port(u8 port)
Expand Down Expand Up @@ -199,7 +190,7 @@ static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
{
u8 gpio_source, gpio_index, action, port;
u16 function, pad;
u16 pconf0, padval;
u32 val;
struct drm_device *dev = intel_dsi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
Expand All @@ -218,7 +209,7 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
/* pull up/down */
action = *data++ & 1;

if (gpio_index >= ARRAY_SIZE(gtable)) {
if (gpio_index >= ARRAY_SIZE(vlv_gpio_table)) {
DRM_DEBUG_KMS("unknown gpio index %u\n", gpio_index);
goto out;
}
Expand All @@ -242,21 +233,21 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
}
}

function = gtable[gpio_index].function_reg;
pad = gtable[gpio_index].pad_reg;
pconf0 = VLV_GPIO_PCONF0(vlv_gpio_table[gpio_index].base_offset);
padval = VLV_GPIO_PAD_VAL(vlv_gpio_table[gpio_index].base_offset);

mutex_lock(&dev_priv->sb_lock);
if (!gtable[gpio_index].init) {
if (!vlv_gpio_table[gpio_index].init) {
/* program the function */
/* FIXME: remove constant below */
vlv_iosf_sb_write(dev_priv, port, function, 0x2000CC00);
gtable[gpio_index].init = 1;
vlv_iosf_sb_write(dev_priv, port, pconf0, 0x2000CC00);
vlv_gpio_table[gpio_index].init = true;
}

val = 0x4 | action;

/* pull up/down */
vlv_iosf_sb_write(dev_priv, port, pad, val);
vlv_iosf_sb_write(dev_priv, port, padval, val);
mutex_unlock(&dev_priv->sb_lock);

out:
Expand Down

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