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author | 2019-12-16 15:27:01 +0530 | |
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committer | 2020-01-08 12:58:06 +0530 | |
commit | 380f57083c12936d6189fcda9e954ffcb821ec74 (patch) | |
tree | 0d84d459a0f9423ba14f4f8a612437250107d895 /drivers | |
parent | phy: cadence: Sierra: Make "phy_clk" and "sierra_apb" optional resources (diff) | |
download | linux-380f57083c12936d6189fcda9e954ffcb821ec74.tar.gz linux-380f57083c12936d6189fcda9e954ffcb821ec74.tar.bz2 linux-380f57083c12936d6189fcda9e954ffcb821ec74.zip |
phy: cadence: Sierra: Use "regmap" for read and write to Sierra registers
Use "regmap" for read and write to Sierra registers. This is in
perparation for adding SERDES_16G support present in TI's J721E
SoC.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/phy/cadence/phy-cadence-sierra.c | 291 |
1 files changed, 237 insertions, 54 deletions
diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c index bed68c25682f..c60809f615af 100644 --- a/drivers/phy/cadence/phy-cadence-sierra.c +++ b/drivers/phy/cadence/phy-cadence-sierra.c @@ -22,49 +22,63 @@ #include <dt-bindings/phy/phy.h> /* PHY register offsets */ -#define SIERRA_PHY_PLL_CFG (0xc00e << 2) -#define SIERRA_DET_STANDEC_A (0x4000 << 2) -#define SIERRA_DET_STANDEC_B (0x4001 << 2) -#define SIERRA_DET_STANDEC_C (0x4002 << 2) -#define SIERRA_DET_STANDEC_D (0x4003 << 2) -#define SIERRA_DET_STANDEC_E (0x4004 << 2) -#define SIERRA_PSM_LANECAL (0x4008 << 2) -#define SIERRA_PSM_DIAG (0x4015 << 2) -#define SIERRA_PSC_TX_A0 (0x4028 << 2) -#define SIERRA_PSC_TX_A1 (0x4029 << 2) -#define SIERRA_PSC_TX_A2 (0x402A << 2) -#define SIERRA_PSC_TX_A3 (0x402B << 2) -#define SIERRA_PSC_RX_A0 (0x4030 << 2) -#define SIERRA_PSC_RX_A1 (0x4031 << 2) -#define SIERRA_PSC_RX_A2 (0x4032 << 2) -#define SIERRA_PSC_RX_A3 (0x4033 << 2) -#define SIERRA_PLLCTRL_SUBRATE (0x403A << 2) -#define SIERRA_PLLCTRL_GEN_D (0x403E << 2) -#define SIERRA_DRVCTRL_ATTEN (0x406A << 2) -#define SIERRA_CLKPATHCTRL_TMR (0x4081 << 2) -#define SIERRA_RX_CREQ_FLTR_A_MODE1 (0x4087 << 2) -#define SIERRA_RX_CREQ_FLTR_A_MODE0 (0x4088 << 2) -#define SIERRA_CREQ_CCLKDET_MODE01 (0x408E << 2) -#define SIERRA_RX_CTLE_MAINTENANCE (0x4091 << 2) -#define SIERRA_CREQ_FSMCLK_SEL (0x4092 << 2) -#define SIERRA_CTLELUT_CTRL (0x4098 << 2) -#define SIERRA_DFE_ECMP_RATESEL (0x40C0 << 2) -#define SIERRA_DFE_SMP_RATESEL (0x40C1 << 2) -#define SIERRA_DEQ_VGATUNE_CTRL (0x40E1 << 2) -#define SIERRA_TMRVAL_MODE3 (0x416E << 2) -#define SIERRA_TMRVAL_MODE2 (0x416F << 2) -#define SIERRA_TMRVAL_MODE1 (0x4170 << 2) -#define SIERRA_TMRVAL_MODE0 (0x4171 << 2) -#define SIERRA_PICNT_MODE1 (0x4174 << 2) -#define SIERRA_CPI_OUTBUF_RATESEL (0x417C << 2) -#define SIERRA_LFPSFILT_NS (0x418A << 2) -#define SIERRA_LFPSFILT_RD (0x418B << 2) -#define SIERRA_LFPSFILT_MP (0x418C << 2) -#define SIERRA_SDFILT_H2L_A (0x4191 << 2) +#define SIERRA_COMMON_CDB_OFFSET 0x0 +#define SIERRA_MACRO_ID_REG 0x0 + +#define SIERRA_LANE_CDB_OFFSET(ln, block_offset, reg_offset) \ + ((0x4000 << (block_offset)) + \ + (((ln) << 9) << (reg_offset))) +#define SIERRA_DET_STANDEC_A 0x000 +#define SIERRA_DET_STANDEC_B 0x001 +#define SIERRA_DET_STANDEC_C 0x002 +#define SIERRA_DET_STANDEC_D 0x003 +#define SIERRA_DET_STANDEC_E 0x004 +#define SIERRA_PSM_LANECAL 0x008 +#define SIERRA_PSM_DIAG 0x015 +#define SIERRA_PSC_TX_A0 0x028 +#define SIERRA_PSC_TX_A1 0x029 +#define SIERRA_PSC_TX_A2 0x02A +#define SIERRA_PSC_TX_A3 0x02B +#define SIERRA_PSC_RX_A0 0x030 +#define SIERRA_PSC_RX_A1 0x031 +#define SIERRA_PSC_RX_A2 0x032 +#define SIERRA_PSC_RX_A3 0x033 +#define SIERRA_PLLCTRL_SUBRATE 0x03A +#define SIERRA_PLLCTRL_GEN_D 0x03E +#define SIERRA_DRVCTRL_ATTEN 0x06A +#define SIERRA_CLKPATHCTRL_TMR 0x081 +#define SIERRA_RX_CREQ_FLTR_A_MODE1 0x087 +#define SIERRA_RX_CREQ_FLTR_A_MODE0 0x088 +#define SIERRA_CREQ_CCLKDET_MODE01 0x08E +#define SIERRA_RX_CTLE_MAINTENANCE 0x091 +#define SIERRA_CREQ_FSMCLK_SEL 0x092 +#define SIERRA_CTLELUT_CTRL 0x098 +#define SIERRA_DFE_ECMP_RATESEL 0x0C0 +#define SIERRA_DFE_SMP_RATESEL 0x0C1 +#define SIERRA_DEQ_VGATUNE_CTRL 0x0E1 +#define SIERRA_TMRVAL_MODE3 0x16E +#define SIERRA_TMRVAL_MODE2 0x16F +#define SIERRA_TMRVAL_MODE1 0x170 +#define SIERRA_TMRVAL_MODE0 0x171 +#define SIERRA_PICNT_MODE1 0x174 +#define SIERRA_CPI_OUTBUF_RATESEL 0x17C +#define SIERRA_LFPSFILT_NS 0x18A +#define SIERRA_LFPSFILT_RD 0x18B +#define SIERRA_LFPSFILT_MP 0x18C +#define SIERRA_SDFILT_H2L_A 0x191 + +#define SIERRA_PHY_CONFIG_CTRL_OFFSET(block_offset) \ + (0xc000 << (block_offset)) +#define SIERRA_PHY_PLL_CFG 0xe #define SIERRA_MACRO_ID 0x00007364 #define SIERRA_MAX_LANES 4 +static const struct reg_field macro_id_type = + REG_FIELD(SIERRA_MACRO_ID_REG, 0, 15); +static const struct reg_field phy_pll_cfg_1 = + REG_FIELD(SIERRA_PHY_PLL_CFG, 1, 1); + struct cdns_sierra_inst { struct phy *phy; u32 phy_type; @@ -80,28 +94,93 @@ struct cdns_reg_pairs { struct cdns_sierra_data { u32 id_value; + u8 block_offset_shift; + u8 reg_offset_shift; u32 pcie_regs; u32 usb_regs; struct cdns_reg_pairs *pcie_vals; struct cdns_reg_pairs *usb_vals; }; -struct cdns_sierra_phy { +struct cdns_regmap_cdb_context { struct device *dev; void __iomem *base; + u8 reg_offset_shift; +}; + +struct cdns_sierra_phy { + struct device *dev; + struct regmap *regmap; struct cdns_sierra_data *init_data; struct cdns_sierra_inst phys[SIERRA_MAX_LANES]; struct reset_control *phy_rst; struct reset_control *apb_rst; + struct regmap *regmap_lane_cdb[SIERRA_MAX_LANES]; + struct regmap *regmap_phy_config_ctrl; + struct regmap *regmap_common_cdb; + struct regmap_field *macro_id_type; + struct regmap_field *phy_pll_cfg_1; struct clk *clk; int nsubnodes; bool autoconf; }; +static int cdns_regmap_write(void *context, unsigned int reg, unsigned int val) +{ + struct cdns_regmap_cdb_context *ctx = context; + u32 offset = reg << ctx->reg_offset_shift; + + writew(val, ctx->base + offset); + + return 0; +} + +static int cdns_regmap_read(void *context, unsigned int reg, unsigned int *val) +{ + struct cdns_regmap_cdb_context *ctx = context; + u32 offset = reg << ctx->reg_offset_shift; + + *val = readw(ctx->base + offset); + return 0; +} + +#define SIERRA_LANE_CDB_REGMAP_CONF(n) \ +{ \ + .name = "sierra_lane" n "_cdb", \ + .reg_stride = 1, \ + .fast_io = true, \ + .reg_write = cdns_regmap_write, \ + .reg_read = cdns_regmap_read, \ +} + +static struct regmap_config cdns_sierra_lane_cdb_config[] = { + SIERRA_LANE_CDB_REGMAP_CONF("0"), + SIERRA_LANE_CDB_REGMAP_CONF("1"), + SIERRA_LANE_CDB_REGMAP_CONF("2"), + SIERRA_LANE_CDB_REGMAP_CONF("3"), +}; + +static struct regmap_config cdns_sierra_common_cdb_config = { + .name = "sierra_common_cdb", + .reg_stride = 1, + .fast_io = true, + .reg_write = cdns_regmap_write, + .reg_read = cdns_regmap_read, +}; + +static struct regmap_config cdns_sierra_phy_config_ctrl_config = { + .name = "sierra_phy_config_ctrl", + .reg_stride = 1, + .fast_io = true, + .reg_write = cdns_regmap_write, + .reg_read = cdns_regmap_read, +}; + static void cdns_sierra_phy_init(struct phy *gphy) { struct cdns_sierra_inst *ins = phy_get_drvdata(gphy); struct cdns_sierra_phy *phy = dev_get_drvdata(gphy->dev.parent); + struct regmap *regmap = phy->regmap; int i, j; struct cdns_reg_pairs *vals; u32 num_regs; @@ -115,10 +194,12 @@ static void cdns_sierra_phy_init(struct phy *gphy) } else { return; } - for (i = 0; i < ins->num_lanes; i++) - for (j = 0; j < num_regs ; j++) - writel(vals[j].val, phy->base + - vals[j].off + (i + ins->mlane) * 0x800); + for (i = 0; i < ins->num_lanes; i++) { + for (j = 0; j < num_regs ; j++) { + regmap = phy->regmap_lane_cdb[i + ins->mlane]; + regmap_write(regmap, vals[j].off, vals[j].val); + } + } } static int cdns_sierra_phy_on(struct phy *gphy) @@ -159,37 +240,136 @@ static int cdns_sierra_get_optional(struct cdns_sierra_inst *inst, static const struct of_device_id cdns_sierra_id_table[]; +static struct regmap *cdns_regmap_init(struct device *dev, void __iomem *base, + u32 block_offset, u8 reg_offset_shift, + const struct regmap_config *config) +{ + struct cdns_regmap_cdb_context *ctx; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); + + ctx->dev = dev; + ctx->base = base + block_offset; + ctx->reg_offset_shift = reg_offset_shift; + + return devm_regmap_init(dev, NULL, ctx, config); +} + +static int cdns_regfield_init(struct cdns_sierra_phy *sp) +{ + struct device *dev = sp->dev; + struct regmap_field *field; + struct regmap *regmap; + + regmap = sp->regmap_common_cdb; + field = devm_regmap_field_alloc(dev, regmap, macro_id_type); + if (IS_ERR(field)) { + dev_err(dev, "MACRO_ID_TYPE reg field init failed\n"); + return PTR_ERR(field); + } + sp->macro_id_type = field; + + regmap = sp->regmap_phy_config_ctrl; + field = devm_regmap_field_alloc(dev, regmap, phy_pll_cfg_1); + if (IS_ERR(field)) { + dev_err(dev, "PHY_PLL_CFG_1 reg field init failed\n"); + return PTR_ERR(field); + } + sp->phy_pll_cfg_1 = field; + + return 0; +} + +static int cdns_regmap_init_blocks(struct cdns_sierra_phy *sp, + void __iomem *base, u8 block_offset_shift, + u8 reg_offset_shift) +{ + struct device *dev = sp->dev; + struct regmap *regmap; + u32 block_offset; + int i; + + for (i = 0; i < SIERRA_MAX_LANES; i++) { + block_offset = SIERRA_LANE_CDB_OFFSET(i, block_offset_shift, + reg_offset_shift); + regmap = cdns_regmap_init(dev, base, block_offset, + reg_offset_shift, + &cdns_sierra_lane_cdb_config[i]); + if (IS_ERR(regmap)) { + dev_err(dev, "Failed to init lane CDB regmap\n"); + return PTR_ERR(regmap); + } + sp->regmap_lane_cdb[i] = regmap; + } + + regmap = cdns_regmap_init(dev, base, SIERRA_COMMON_CDB_OFFSET, + reg_offset_shift, + &cdns_sierra_common_cdb_config); + if (IS_ERR(regmap)) { + dev_err(dev, "Failed to init common CDB regmap\n"); + return PTR_ERR(regmap); + } + sp->regmap_common_cdb = regmap; + + block_offset = SIERRA_PHY_CONFIG_CTRL_OFFSET(block_offset_shift); + regmap = cdns_regmap_init(dev, base, block_offset, reg_offset_shift, + &cdns_sierra_phy_config_ctrl_config); + if (IS_ERR(regmap)) { + dev_err(dev, "Failed to init PHY config and control regmap\n"); + return PTR_ERR(regmap); + } + sp->regmap_phy_config_ctrl = regmap; + + return 0; +} + static int cdns_sierra_phy_probe(struct platform_device *pdev) { struct cdns_sierra_phy *sp; struct phy_provider *phy_provider; struct device *dev = &pdev->dev; const struct of_device_id *match; + struct cdns_sierra_data *data; + unsigned int id_value; struct resource *res; int i, ret, node = 0; + void __iomem *base; struct device_node *dn = dev->of_node, *child; if (of_get_child_count(dn) == 0) return -ENODEV; + /* Get init data for this PHY */ + match = of_match_device(cdns_sierra_id_table, dev); + if (!match) + return -EINVAL; + + data = (struct cdns_sierra_data *)match->data; + sp = devm_kzalloc(dev, sizeof(*sp), GFP_KERNEL); if (!sp) return -ENOMEM; dev_set_drvdata(dev, sp); sp->dev = dev; + sp->init_data = data; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - sp->base = devm_ioremap_resource(dev, res); - if (IS_ERR(sp->base)) { + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) { dev_err(dev, "missing \"reg\"\n"); - return PTR_ERR(sp->base); + return PTR_ERR(base); } - /* Get init data for this PHY */ - match = of_match_device(cdns_sierra_id_table, dev); - if (!match) - return -EINVAL; - sp->init_data = (struct cdns_sierra_data *)match->data; + ret = cdns_regmap_init_blocks(sp, base, data->block_offset_shift, + data->reg_offset_shift); + if (ret) + return ret; + + ret = cdns_regfield_init(sp); + if (ret) + return ret; platform_set_drvdata(pdev, sp); @@ -219,7 +399,8 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev) reset_control_deassert(sp->apb_rst); /* Check that PHY is present */ - if (sp->init_data->id_value != readl(sp->base)) { + regmap_field_read(sp->macro_id_type, &id_value); + if (sp->init_data->id_value != id_value) { ret = -EINVAL; goto clk_disable; } @@ -267,7 +448,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev) /* If more than one subnode, configure the PHY as multilink */ if (!sp->autoconf && sp->nsubnodes > 1) - writel(2, sp->base + SIERRA_PHY_PLL_CFG); + regmap_field_write(sp->phy_pll_cfg_1, 0x1); pm_runtime_enable(dev); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); @@ -364,6 +545,8 @@ static struct cdns_reg_pairs cdns_pcie_regs[] = { static const struct cdns_sierra_data cdns_map_sierra = { SIERRA_MACRO_ID, + 0x2, + 0x2, ARRAY_SIZE(cdns_pcie_regs), ARRAY_SIZE(cdns_usb_regs), cdns_pcie_regs, |