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Date: Tue, 8 Mar 2022 01:28:34 +0800 From: Zhou Yanjie <zhouyu@...yeetech.com> To: Aidan MacDonald <aidanmacdonald.0x0@...il.com>, paul@...pouillou.net, linus.walleij@...aro.org Cc: linux-mips@...r.kernel.org, linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2] pinctrl: ingenic: Fix regmap on X series SoCs Hi Aidan, On 2022/2/24 下午10:58, Aidan MacDonald wrote: > The X series Ingenic SoCs have a shadow GPIO group which is at a higher > offset than the other groups, and is used for all GPIO configuration. > The regmap did not take this offset into account and set max_register > too low, so the regmap API blocked writes to the shadow group, which > made the pinctrl driver unable to configure any pins. > > Fix this by adding regmap access tables to the chip info. > > Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com> > --- > v1: https://lore.kernel.org/linux-mips/20220209230452.19535-1-aidanmacdonald.0x0@gmail.com/ > > drivers/pinctrl/pinctrl-ingenic.c | 53 ++++++++++++++++++++++++++++++- > 1 file changed, 52 insertions(+), 1 deletion(-) Tested-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com> > > diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c > index 2712f51eb238..074c94edd90b 100644 > --- a/drivers/pinctrl/pinctrl-ingenic.c > +++ b/drivers/pinctrl/pinctrl-ingenic.c > @@ -119,6 +119,9 @@ struct ingenic_chip_info { > unsigned int num_functions; > > const u32 *pull_ups, *pull_downs; > + > + unsigned int max_register; > + const struct regmap_access_table* access_table; > }; > > struct ingenic_pinctrl { > @@ -228,6 +231,7 @@ static const struct ingenic_chip_info jz4730_chip_info = { > .num_functions = ARRAY_SIZE(jz4730_functions), > .pull_ups = jz4730_pull_ups, > .pull_downs = jz4730_pull_downs, > + .max_register = 4 * 0x30 - 4, > }; > > static const u32 jz4740_pull_ups[4] = { > @@ -337,6 +341,7 @@ static const struct ingenic_chip_info jz4740_chip_info = { > .num_functions = ARRAY_SIZE(jz4740_functions), > .pull_ups = jz4740_pull_ups, > .pull_downs = jz4740_pull_downs, > + .max_register = 4 * 0x100 - 4, > }; > > static int jz4725b_mmc0_1bit_pins[] = { 0x48, 0x49, 0x5c, }; > @@ -439,6 +444,7 @@ static const struct ingenic_chip_info jz4725b_chip_info = { > .num_functions = ARRAY_SIZE(jz4725b_functions), > .pull_ups = jz4740_pull_ups, > .pull_downs = jz4740_pull_downs, > + .max_register = 4 * 0x100 - 4, > }; > > static const u32 jz4750_pull_ups[6] = { > @@ -576,6 +582,7 @@ static const struct ingenic_chip_info jz4750_chip_info = { > .num_functions = ARRAY_SIZE(jz4750_functions), > .pull_ups = jz4750_pull_ups, > .pull_downs = jz4750_pull_downs, > + .max_register = 6 * 0x100 - 4, > }; > > static const u32 jz4755_pull_ups[6] = { > @@ -741,6 +748,7 @@ static const struct ingenic_chip_info jz4755_chip_info = { > .num_functions = ARRAY_SIZE(jz4755_functions), > .pull_ups = jz4755_pull_ups, > .pull_downs = jz4755_pull_downs, > + .max_register = 6 * 0x100 - 4, > }; > > static const u32 jz4760_pull_ups[6] = { > @@ -1089,6 +1097,7 @@ static const struct ingenic_chip_info jz4760_chip_info = { > .num_functions = ARRAY_SIZE(jz4760_functions), > .pull_ups = jz4760_pull_ups, > .pull_downs = jz4760_pull_downs, > + .max_register = 6 * 0x100 - 4, > }; > > static const u32 jz4770_pull_ups[6] = { > @@ -1429,6 +1438,7 @@ static const struct ingenic_chip_info jz4770_chip_info = { > .num_functions = ARRAY_SIZE(jz4770_functions), > .pull_ups = jz4770_pull_ups, > .pull_downs = jz4770_pull_downs, > + .max_register = 6 * 0x100 - 4, > }; > > static const u32 jz4775_pull_ups[7] = { > @@ -1702,6 +1712,7 @@ static const struct ingenic_chip_info jz4775_chip_info = { > .num_functions = ARRAY_SIZE(jz4775_functions), > .pull_ups = jz4775_pull_ups, > .pull_downs = jz4775_pull_downs, > + .max_register = 7 * 0x100 - 4, > }; > > static const u32 jz4780_pull_ups[6] = { > @@ -1966,6 +1977,7 @@ static const struct ingenic_chip_info jz4780_chip_info = { > .num_functions = ARRAY_SIZE(jz4780_functions), > .pull_ups = jz4780_pull_ups, > .pull_downs = jz4780_pull_downs, > + .max_register = 6 * 0x100 - 4, > }; > > static const u32 x1000_pull_ups[4] = { > @@ -2179,6 +2191,17 @@ static const struct function_desc x1000_functions[] = { > { "mac", x1000_mac_groups, ARRAY_SIZE(x1000_mac_groups), }, > }; > > +static const struct regmap_range x1000_access_ranges[] = { > + regmap_reg_range(0x000, 0x400 - 4), > + regmap_reg_range(0x700, 0x800 - 4), > +}; > + > +/* shared with X1500 */ > +static const struct regmap_access_table x1000_access_table = { > + .yes_ranges = x1000_access_ranges, > + .n_yes_ranges = ARRAY_SIZE(x1000_access_ranges), > +}; > + > static const struct ingenic_chip_info x1000_chip_info = { > .num_chips = 4, > .reg_offset = 0x100, > @@ -2189,6 +2212,7 @@ static const struct ingenic_chip_info x1000_chip_info = { > .num_functions = ARRAY_SIZE(x1000_functions), > .pull_ups = x1000_pull_ups, > .pull_downs = x1000_pull_downs, > + .access_table = &x1000_access_table, > }; > > static int x1500_uart0_data_pins[] = { 0x4a, 0x4b, }; > @@ -2300,6 +2324,7 @@ static const struct ingenic_chip_info x1500_chip_info = { > .num_functions = ARRAY_SIZE(x1500_functions), > .pull_ups = x1000_pull_ups, > .pull_downs = x1000_pull_downs, > + .access_table = &x1000_access_table, > }; > > static const u32 x1830_pull_ups[4] = { > @@ -2506,6 +2531,16 @@ static const struct function_desc x1830_functions[] = { > { "mac", x1830_mac_groups, ARRAY_SIZE(x1830_mac_groups), }, > }; > > +static const struct regmap_range x1830_access_ranges[] = { > + regmap_reg_range(0x0000, 0x4000 - 4), > + regmap_reg_range(0x7000, 0x8000 - 4), > +}; > + > +static const struct regmap_access_table x1830_access_table = { > + .yes_ranges = x1830_access_ranges, > + .n_yes_ranges = ARRAY_SIZE(x1830_access_ranges), > +}; > + > static const struct ingenic_chip_info x1830_chip_info = { > .num_chips = 4, > .reg_offset = 0x1000, > @@ -2516,6 +2551,7 @@ static const struct ingenic_chip_info x1830_chip_info = { > .num_functions = ARRAY_SIZE(x1830_functions), > .pull_ups = x1830_pull_ups, > .pull_downs = x1830_pull_downs, > + .access_table = &x1830_access_table, > }; > > static const u32 x2000_pull_ups[5] = { > @@ -2969,6 +3005,17 @@ static const struct function_desc x2000_functions[] = { > { "otg", x2000_otg_groups, ARRAY_SIZE(x2000_otg_groups), }, > }; > > +static const struct regmap_range x2000_access_ranges[] = { > + regmap_reg_range(0x000, 0x500 - 4), > + regmap_reg_range(0x700, 0x800 - 4), > +}; > + > +/* shared with X2100 */ > +static const struct regmap_access_table x2000_access_table = { > + .yes_ranges = x2000_access_ranges, > + .n_yes_ranges = ARRAY_SIZE(x2000_access_ranges), > +}; > + > static const struct ingenic_chip_info x2000_chip_info = { > .num_chips = 5, > .reg_offset = 0x100, > @@ -2979,6 +3026,7 @@ static const struct ingenic_chip_info x2000_chip_info = { > .num_functions = ARRAY_SIZE(x2000_functions), > .pull_ups = x2000_pull_ups, > .pull_downs = x2000_pull_downs, > + .access_table = &x2000_access_table, > }; > > static const u32 x2100_pull_ups[5] = { > @@ -3189,6 +3237,7 @@ static const struct ingenic_chip_info x2100_chip_info = { > .num_functions = ARRAY_SIZE(x2100_functions), > .pull_ups = x2100_pull_ups, > .pull_downs = x2100_pull_downs, > + .access_table = &x2000_access_table, > }; > > static u32 ingenic_gpio_read_reg(struct ingenic_gpio_chip *jzgc, u8 reg) > @@ -4168,7 +4217,9 @@ static int __init ingenic_pinctrl_probe(struct platform_device *pdev) > return PTR_ERR(base); > > regmap_config = ingenic_pinctrl_regmap_config; > - regmap_config.max_register = chip_info->num_chips * chip_info->reg_offset; > + regmap_config.rd_table = chip_info->access_table; > + regmap_config.wr_table = chip_info->access_table; > + regmap_config.max_register = chip_info->max_register; > > jzpc->map = devm_regmap_init_mmio(dev, base, ®map_config); > if (IS_ERR(jzpc->map)) {
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