From 8f88156f82ea4c152b3a90cc9f2a111327089d47 Mon Sep 17 00:00:00 2001 From: "Chia-Wei, Wang" Date: Fri, 19 Mar 2021 16:57:34 +1030 Subject: ipmi: kcs: aspeed: Adapt to new LPC DTS layout Add check against LPC device v2 compatible string to ensure that the fixed device tree layout is adopted. The LPC register offsets are also fixed accordingly. Signed-off-by: Chia-Wei Wang Reviewed-by: Andrew Jeffery Acked-by: Haiyue Wang Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20210319062752.145730-3-andrew@aj.id.au Signed-off-by: Joel Stanley --- drivers/char/ipmi/kcs_bmc_aspeed.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) (limited to 'drivers/char/ipmi/kcs_bmc_aspeed.c') diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c index a140203c079b..eefe362f65f0 100644 --- a/drivers/char/ipmi/kcs_bmc_aspeed.c +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c @@ -27,7 +27,6 @@ #define KCS_CHANNEL_MAX 4 -/* mapped to lpc-bmc@0 IO space */ #define LPC_HICR0 0x000 #define LPC_HICR0_LPC3E BIT(7) #define LPC_HICR0_LPC2E BIT(6) @@ -52,15 +51,13 @@ #define LPC_STR1 0x03C #define LPC_STR2 0x040 #define LPC_STR3 0x044 - -/* mapped to lpc-host@80 IO space */ -#define LPC_HICRB 0x080 +#define LPC_HICRB 0x100 #define LPC_HICRB_IBFIF4 BIT(1) #define LPC_HICRB_LPC4E BIT(0) -#define LPC_LADR4 0x090 -#define LPC_IDR4 0x094 -#define LPC_ODR4 0x098 -#define LPC_STR4 0x09C +#define LPC_LADR4 0x110 +#define LPC_IDR4 0x114 +#define LPC_ODR4 0x118 +#define LPC_STR4 0x11C struct aspeed_kcs_bmc { struct regmap *map; @@ -348,12 +345,20 @@ static int aspeed_kcs_probe(struct platform_device *pdev) struct device_node *np; int rc; - np = pdev->dev.of_node; + np = dev->of_node->parent; + if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && + !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") && + !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) { + dev_err(dev, "unsupported LPC device binding\n"); + return -ENODEV; + } + + np = dev->of_node; if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc") || - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) + of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc")) kcs_bmc = aspeed_kcs_probe_of_v1(pdev); else if (of_device_is_compatible(np, "aspeed,ast2400-kcs-bmc-v2") || - of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc-v2")) + of_device_is_compatible(np, "aspeed,ast2500-kcs-bmc-v2")) kcs_bmc = aspeed_kcs_probe_of_v2(pdev); else return -EINVAL; -- cgit v1.2.3