lkml.org 
[lkml]   [2022]   [Jan]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] pinctrl: microchip-sgpio: Fix support for regmap
Hi Horatiu,

On Tue, Jan 25, 2022 at 05:12:45PM +0100, Horatiu Vultur wrote:
> Initially the driver accessed the registers using u32 __iomem but then
> in the blamed commit it changed it to use regmap. The problem is that now
> the offset of the registers is not calculated anymore at word offset but
> at byte offset. Therefore make sure to multiply the offset with word size.
>

Sorry about this one. I see it must have slipped through the cracks
because I had made the same change in my tree. The only difference is I
had copied reg_stride into sgpio_priv instead of making regmap_config
file-scope. For what its worth, with apologies:

Reviewed-by: Colin Foster <colin.foster@in-advantage.com>

> Fixes: 2afbbab45c261a ("pinctrl: microchip-sgpio: update to support regmap")
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> ---
> drivers/pinctrl/pinctrl-microchip-sgpio.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c
> index 8e081c90bdb2..2999c98bbdee 100644
> --- a/drivers/pinctrl/pinctrl-microchip-sgpio.c
> +++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c
> @@ -98,6 +98,12 @@ static const struct sgpio_properties properties_sparx5 = {
> .regoff = { 0x00, 0x06, 0x26, 0x04, 0x05, 0x2a, 0x32, 0x3a, 0x3e, 0x42 },
> };
>
> +static const struct regmap_config regmap_config = {
> + .reg_bits = 32,
> + .val_bits = 32,
> + .reg_stride = 4,
> +};
> +
> static const char * const functions[] = { "gpio" };
>
> struct sgpio_bank {
> @@ -137,7 +143,7 @@ static inline int sgpio_addr_to_pin(struct sgpio_priv *priv, int port, int bit)
>
> static inline u32 sgpio_get_addr(struct sgpio_priv *priv, u32 rno, u32 off)
> {
> - return priv->properties->regoff[rno] + off;
> + return (priv->properties->regoff[rno] + off) * regmap_config.reg_stride;
> }
>
> static u32 sgpio_readl(struct sgpio_priv *priv, u32 rno, u32 off)
> @@ -821,11 +827,6 @@ static int microchip_sgpio_probe(struct platform_device *pdev)
> struct clk *clk;
> u32 __iomem *regs;
> u32 val;
> - struct regmap_config regmap_config = {
> - .reg_bits = 32,
> - .val_bits = 32,
> - .reg_stride = 4,
> - };
>
> priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> if (!priv)
> --
> 2.33.0
>

\
 
 \ /
  Last update: 2022-01-25 17:52    [W:0.086 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site