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[118.171.150.205]) by smtp.gmail.com with ESMTPSA id j8sm1962744pji.1.2020.12.07.23.32.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Dec 2020 23:32:31 -0800 (PST) From: Joseph Liu To: u-boot@lists.denx.de Cc: sjg@chromium.org, Joseph Liu Subject: [PATCH] gpio: pca953x: add bus option to select the i2c bus. Date: Tue, 8 Dec 2020 15:32:26 +0800 Message-Id: <20201208073226.21731-1-maxdog988@gmail.com> X-Mailer: git-send-email 2.17.1 X-Mailman-Approved-At: Tue, 08 Dec 2020 15:44:54 +0100 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean From: Joseph Liu If DM_I2C is used, the command "i2c dev" will not reassign gd->cur_i2c_bus. Add this bus option to change the active I2C bus. Signed-off-by: Joseph Liu --- drivers/gpio/pca953x.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c index 4ab8cee2d1..b64f6ddcea 100644 --- a/drivers/gpio/pca953x.c +++ b/drivers/gpio/pca953x.c @@ -20,6 +20,7 @@ enum { PCA953X_CMD_INFO, + PCA953X_CMD_BUS, PCA953X_CMD_DEVICE, PCA953X_CMD_OUTPUT, PCA953X_CMD_INPUT, @@ -194,6 +195,7 @@ static int pca953x_info(uint8_t chip) } static struct cmd_tbl cmd_pca953x[] = { + U_BOOT_CMD_MKENT(bus, 3, 0, (void *)PCA953X_CMD_BUS, "", ""), U_BOOT_CMD_MKENT(device, 3, 0, (void *)PCA953X_CMD_DEVICE, "", ""), U_BOOT_CMD_MKENT(output, 4, 0, (void *)PCA953X_CMD_OUTPUT, "", ""), U_BOOT_CMD_MKENT(input, 3, 0, (void *)PCA953X_CMD_INPUT, "", ""), @@ -205,6 +207,7 @@ static int do_pca953x(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { static uint8_t chip = CONFIG_SYS_I2C_PCA953X_ADDR; + uint8_t bus = 0; int ret = CMD_RET_USAGE, val; ulong ul_arg2 = 0; ulong ul_arg3 = 0; @@ -214,7 +217,7 @@ static int do_pca953x(struct cmd_tbl *cmdtp, int flag, int argc, /* All commands but "device" require 'maxargs' arguments */ if (!c || !((argc == (c->maxargs)) || - (((long)c->cmd == PCA953X_CMD_DEVICE) && + ((((long)c->cmd == PCA953X_CMD_DEVICE) || ((long)c->cmd == PCA953X_CMD_BUS)) && (argc == (c->maxargs - 1))))) { return CMD_RET_USAGE; } @@ -233,7 +236,14 @@ static int do_pca953x(struct cmd_tbl *cmdtp, int flag, int argc, if (ret) ret = CMD_RET_FAILURE; break; + case PCA953X_CMD_BUS: + if (argc == 3) + i2c_set_bus_num((uint8_t)ul_arg2); + bus = i2c_get_bus_num(); + printf("Current i2c bus: 0x%x\n", bus); + ret = CMD_RET_SUCCESS; + break; case PCA953X_CMD_DEVICE: if (argc == 3) chip = (uint8_t)ul_arg2; @@ -280,6 +290,8 @@ static int do_pca953x(struct cmd_tbl *cmdtp, int flag, int argc, U_BOOT_CMD( pca953x, 5, 1, do_pca953x, "pca953x gpio access", + "bus [num]\n" + " - show or set current i2c bus\n" "device [dev]\n" " - show or set current device address\n" "pca953x info\n"