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drm/msm/dsi: Add support for msm8x94

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DSI controller on msm8x94 is version 1.3, which requires different
power supplies and works with 20nm DSI PHY. This change is to add
the basic support for this version.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Hai Li
2015-06-18 10:14:21 -04:00
committed by Rob Clark
parent ab8909b032
commit dcefc117cc
4 changed files with 157 additions and 0 deletions
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7
Documentation/devicetree/bindings/drm/msm/dsi.txt
View File

@@ -47,6 +47,7 @@ Required properties:
- compatible: Could be the following
* "qcom,dsi-phy-28nm-hpm"
* "qcom,dsi-phy-28nm-lp"
* "qcom,dsi-phy-20nm"
- reg: Physical base address and length of the registers of PLL, PHY and PHY
regulator
- reg-names: The names of register regions. The following regions are required:
@@ -62,6 +63,10 @@ Required properties:
* "iface_clk"
- vddio-supply: phandle to vdd-io regulator device node
Optional properties:
- qcom,dsi-phy-regulator-ldo-mode: Boolean value indicating if the LDO mode PHY
regulator is wanted.
Example:
mdss_dsi0: qcom,mdss_dsi@fd922800 {
compatible = "qcom,mdss-dsi-ctrl";
@@ -124,4 +129,6 @@ Example:
clock-names = "iface_clk";
clocks = <&mmcc MDSS_AHB_CLK>;
vddio-supply = <&pma8084_l12>;
qcom,dsi-phy-regulator-ldo-mode;
};

1
drivers/gpu/drm/msm/dsi/dsi.h
View File

@@ -30,6 +30,7 @@
enum msm_dsi_phy_type {
MSM_DSI_PHY_28NM_HPM,
MSM_DSI_PHY_28NM_LP,
MSM_DSI_PHY_20NM,
MSM_DSI_PHY_MAX
};

18
drivers/gpu/drm/msm/dsi/dsi_host.c
View File

@@ -34,6 +34,7 @@
#define MSM_DSI_6G_VER_MINOR_V1_1 0x10010000
#define MSM_DSI_6G_VER_MINOR_V1_1_1 0x10010001
#define MSM_DSI_6G_VER_MINOR_V1_2 0x10020000
#define MSM_DSI_6G_VER_MINOR_V1_3 0x10030000
#define MSM_DSI_6G_VER_MINOR_V1_3_1 0x10030001
#define DSI_6G_REG_SHIFT 4
@@ -117,6 +118,23 @@ static const struct dsi_config dsi_cfgs[] = {
},
},
},
{ /* 8x94 */
.major = MSM_DSI_VER_MAJOR_6G,
.minor = MSM_DSI_6G_VER_MINOR_V1_3,
.io_offset = DSI_6G_REG_SHIFT,
.reg_cfg = {
.num = 7,
.regs = {
{"gdsc", -1, -1, -1, -1},
{"vdda", 1250000, 1250000, 100000, 100},
{"vddio", 1800000, 1800000, 100000, 100},
{"vcca", 1000000, 1000000, 10000, 100},
{"vdd", 1800000, 1800000, 100000, 100},
{"lab_reg", -1, -1, -1, -1},
{"ibb_reg", -1, -1, -1, -1},
},
}
},
};
static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor)

131
drivers/gpu/drm/msm/dsi/dsi_phy.c
View File

@@ -66,6 +66,8 @@ struct msm_dsi_phy {
struct dsi_dphy_timing timing;
const struct dsi_phy_cfg *cfg;
bool regulator_ldo_mode;
struct msm_dsi_pll *pll;
};
@@ -406,6 +408,115 @@ static int dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
return 0;
}
static void dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
{
void __iomem *base = phy->reg_base;
if (!enable) {
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
return;
}
if (phy->regulator_ldo_mode) {
dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x1d);
return;
}
/* non LDO mode */
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_1, 0x03);
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_2, 0x03);
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_3, 0x00);
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_4, 0x20);
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0x01);
dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x00);
dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_0, 0x03);
}
static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
const unsigned long bit_rate, const unsigned long esc_rate)
{
struct dsi_dphy_timing *timing = &phy->timing;
int i;
void __iomem *base = phy->base;
u32 cfg_4[4] = {0x20, 0x40, 0x20, 0x00};
DBG("");
if (dsi_dphy_timing_calc(timing, bit_rate, esc_rate)) {
pr_err("%s: D-PHY timing calculation failed\n", __func__);
return -EINVAL;
}
dsi_20nm_phy_regulator_ctrl(phy, true);
dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_0, 0xff);
dsi_phy_set_src_pll(phy, src_pll_id, REG_DSI_20nm_PHY_GLBL_TEST_CTRL);
for (i = 0; i < 4; i++) {
dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_3(i),
(i >> 1) * 0x40);
dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_0(i), 0x01);
dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_1(i), 0x46);
dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_0(i), 0x02);
dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_1(i), 0xa0);
dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_4(i), cfg_4[i]);
}
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_3, 0x80);
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR0, 0x01);
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR1, 0x46);
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_0, 0x00);
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_1, 0xa0);
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_2, 0x00);
dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_4, 0x00);
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_0,
DSI_20nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_1,
DSI_20nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_2,
DSI_20nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
if (timing->clk_zero & BIT(8))
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_3,
DSI_20nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_4,
DSI_20nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_5,
DSI_20nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_6,
DSI_20nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_7,
DSI_20nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_8,
DSI_20nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_9,
DSI_20nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
DSI_20nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_10,
DSI_20nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_11,
DSI_20nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_1, 0x00);
dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_1, 0x06);
/* make sure everything is written before enable */
wmb();
dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_0, 0x7f);
return 0;
}
static int dsi_20nm_phy_disable(struct msm_dsi_phy *phy)
{
dsi_phy_write(phy->base + REG_DSI_20nm_PHY_CTRL_0, 0);
dsi_20nm_phy_regulator_ctrl(phy, false);
return 0;
}
static int dsi_phy_enable_resource(struct msm_dsi_phy *phy)
{
int ret;
@@ -456,6 +567,21 @@ static const struct dsi_phy_cfg dsi_phy_cfgs[MSM_DSI_PHY_MAX] = {
.disable = dsi_28nm_phy_disable,
}
},
[MSM_DSI_PHY_20NM] = {
.type = MSM_DSI_PHY_20NM,
.src_pll_truthtable = { {false, true}, {false, true} },
.reg_cfg = {
.num = 2,
.regs = {
{"vddio", 1800000, 1800000, 100000, 100},
{"vcca", 1000000, 1000000, 10000, 100},
},
},
.ops = {
.enable = dsi_20nm_phy_enable,
.disable = dsi_20nm_phy_disable,
}
},
};
static const struct of_device_id dsi_phy_dt_match[] = {
@@ -463,6 +589,8 @@ static const struct of_device_id dsi_phy_dt_match[] = {
.data = &dsi_phy_cfgs[MSM_DSI_PHY_28NM_HPM],},
{ .compatible = "qcom,dsi-phy-28nm-lp",
.data = &dsi_phy_cfgs[MSM_DSI_PHY_28NM_LP],},
{ .compatible = "qcom,dsi-phy-20nm",
.data = &dsi_phy_cfgs[MSM_DSI_PHY_20NM],},
{}
};
@@ -492,6 +620,9 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
goto fail;
}
phy->regulator_ldo_mode = of_property_read_bool(pdev->dev.of_node,
"qcom,dsi-phy-regulator-ldo-mode");
phy->base = msm_ioremap(pdev, "dsi_phy", "DSI_PHY");
if (IS_ERR(phy->base)) {
dev_err(&pdev->dev, "%s: failed to map phy base\n", __func__);