diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0087-tty-serial-msm-Remove-direct-access-to-GSBI.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0087-tty-serial-msm-Remove-direct-access-to-GSBI.patch | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0087-tty-serial-msm-Remove-direct-access-to-GSBI.patch b/target/linux/ipq806x/patches/0087-tty-serial-msm-Remove-direct-access-to-GSBI.patch new file mode 100644 index 0000000000..8cbb52a903 --- /dev/null +++ b/target/linux/ipq806x/patches/0087-tty-serial-msm-Remove-direct-access-to-GSBI.patch @@ -0,0 +1,151 @@ +From 025909cbf933cc20c2ff5ea9f87de8e17a739a08 Mon Sep 17 00:00:00 2001 +From: Andy Gross <agross@codeaurora.org> +Date: Thu, 24 Apr 2014 11:31:22 -0500 +Subject: [PATCH 087/182] tty: serial: msm: Remove direct access to GSBI + +This patch removes direct access of the GSBI registers. GSBI configuration +should be done through the GSBI driver directly. + +Signed-off-by: Andy Gross <agross@codeaurora.org> +Signed-off-by: Kumar Gala <galak@codeaurora.org> +--- + drivers/tty/serial/msm_serial.c | 48 ++------------------------------------- + drivers/tty/serial/msm_serial.h | 5 ---- + 2 files changed, 2 insertions(+), 51 deletions(-) + +diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c +index 053b98e..778e376 100644 +--- a/drivers/tty/serial/msm_serial.c ++++ b/drivers/tty/serial/msm_serial.c +@@ -52,7 +52,6 @@ struct msm_port { + struct clk *clk; + struct clk *pclk; + unsigned int imr; +- void __iomem *gsbi_base; + int is_uartdm; + unsigned int old_snap_state; + }; +@@ -599,9 +598,7 @@ static const char *msm_type(struct uart_port *port) + static void msm_release_port(struct uart_port *port) + { + struct platform_device *pdev = to_platform_device(port->dev); +- struct msm_port *msm_port = UART_TO_MSM(port); + struct resource *uart_resource; +- struct resource *gsbi_resource; + resource_size_t size; + + uart_resource = platform_get_resource(pdev, IORESOURCE_MEM, 0); +@@ -612,28 +609,12 @@ static void msm_release_port(struct uart_port *port) + release_mem_region(port->mapbase, size); + iounmap(port->membase); + port->membase = NULL; +- +- if (msm_port->gsbi_base) { +- writel_relaxed(GSBI_PROTOCOL_IDLE, +- msm_port->gsbi_base + GSBI_CONTROL); +- +- gsbi_resource = platform_get_resource(pdev, IORESOURCE_MEM, 1); +- if (unlikely(!gsbi_resource)) +- return; +- +- size = resource_size(gsbi_resource); +- release_mem_region(gsbi_resource->start, size); +- iounmap(msm_port->gsbi_base); +- msm_port->gsbi_base = NULL; +- } + } + + static int msm_request_port(struct uart_port *port) + { +- struct msm_port *msm_port = UART_TO_MSM(port); + struct platform_device *pdev = to_platform_device(port->dev); + struct resource *uart_resource; +- struct resource *gsbi_resource; + resource_size_t size; + int ret; + +@@ -652,30 +633,8 @@ static int msm_request_port(struct uart_port *port) + goto fail_release_port; + } + +- gsbi_resource = platform_get_resource(pdev, IORESOURCE_MEM, 1); +- /* Is this a GSBI-based port? */ +- if (gsbi_resource) { +- size = resource_size(gsbi_resource); +- +- if (!request_mem_region(gsbi_resource->start, size, +- "msm_serial")) { +- ret = -EBUSY; +- goto fail_release_port_membase; +- } +- +- msm_port->gsbi_base = ioremap(gsbi_resource->start, size); +- if (!msm_port->gsbi_base) { +- ret = -EBUSY; +- goto fail_release_gsbi; +- } +- } +- + return 0; + +-fail_release_gsbi: +- release_mem_region(gsbi_resource->start, size); +-fail_release_port_membase: +- iounmap(port->membase); + fail_release_port: + release_mem_region(port->mapbase, size); + return ret; +@@ -683,7 +642,6 @@ fail_release_port: + + static void msm_config_port(struct uart_port *port, int flags) + { +- struct msm_port *msm_port = UART_TO_MSM(port); + int ret; + if (flags & UART_CONFIG_TYPE) { + port->type = PORT_MSM; +@@ -691,9 +649,6 @@ static void msm_config_port(struct uart_port *port, int flags) + if (ret) + return; + } +- if (msm_port->gsbi_base) +- writel_relaxed(GSBI_PROTOCOL_UART, +- msm_port->gsbi_base + GSBI_CONTROL); + } + + static int msm_verify_port(struct uart_port *port, struct serial_struct *ser) +@@ -1110,6 +1065,7 @@ static struct of_device_id msm_match_table[] = { + + static struct platform_driver msm_platform_driver = { + .remove = msm_serial_remove, ++ .probe = msm_serial_probe, + .driver = { + .name = "msm_serial", + .owner = THIS_MODULE, +@@ -1125,7 +1081,7 @@ static int __init msm_serial_init(void) + if (unlikely(ret)) + return ret; + +- ret = platform_driver_probe(&msm_platform_driver, msm_serial_probe); ++ ret = platform_driver_register(&msm_platform_driver); + if (unlikely(ret)) + uart_unregister_driver(&msm_uart_driver); + +diff --git a/drivers/tty/serial/msm_serial.h b/drivers/tty/serial/msm_serial.h +index 1e9b68b..d98d45e 100644 +--- a/drivers/tty/serial/msm_serial.h ++++ b/drivers/tty/serial/msm_serial.h +@@ -109,11 +109,6 @@ + #define UART_ISR 0x0014 + #define UART_ISR_TX_READY (1 << 7) + +-#define GSBI_CONTROL 0x0 +-#define GSBI_PROTOCOL_CODE 0x30 +-#define GSBI_PROTOCOL_UART 0x40 +-#define GSBI_PROTOCOL_IDLE 0x0 +- + #define UARTDM_RXFS 0x50 + #define UARTDM_RXFS_BUF_SHIFT 0x7 + #define UARTDM_RXFS_BUF_MASK 0x7 +-- +1.7.10.4 + |