linux/drivers/hsi, branch v4.7

HSI: omap-ssi: move omap_ssi_port_update_fclk

2016-05-09T20:45:18Z

After the clk change support, the ssi omap ssi core driver now calls into the port driver to change fclk. This function was previously inside of an #ifdef, because it was only used when CONFIG_PM is enabled. Now it also gets used without power management support: drivers/hsi/built-in.o: In function `ssi_clk_event': omap_ssi_port.c:(.text+0x1bf8): undefined reference to `omap_ssi_port_update_fclk' This moves the function outside of the CONFIG_PM guard. Signed-off-by: Arnd Bergmann Fixes: 4bcf7414528a ("HSI: omap-ssi: add clk change support") Signed-off-by: Sebastian Reichel

HSI: omap-ssi: include pinctrl header files

2016-05-09T20:45:18Z

The driver now uses some pinctrl functions, but fails to build if PINCTRL is disabled because the respective header files are only included indirectly: drivers/hsi/controllers/omap_ssi_core.c: In function 'ssi_clk_event': drivers/hsi/controllers/omap_ssi_core.c:317:4: error: implicit declaration of function 'pinctrl_pm_select_idle_state' [-Werror=implicit-function-declaration] drivers/hsi/controllers/omap_ssi_core.c:339:4: error: implicit declaration of function 'pinctrl_pm_select_default_state' [-Werror=implicit-function-declaration] drivers/hsi/controllers/omap_ssi_port.c: In function 'ssi_flush': drivers/hsi/controllers/omap_ssi_port.c:520:2: error: implicit declaration of function 'pinctrl_pm_select_idle_state' [-Werror=implicit-function-declaration] This includes the headers from the files that call the functions, which works even if pinctrl is turned off. Signed-off-by: Arnd Bergmann Fixes: 4bcf7414528a ("HSI: omap-ssi: add clk change support") Signed-off-by: Sebastian Reichel

HSI: omap-ssi: add COMMON_CLK dependency

2016-05-09T20:45:18Z

Enabling the omap ssi driver without COMMON_CLK results in a build failure: drivers/hsi/controllers/omap_ssi_core.c: In function 'ssi_clk_event': drivers/hsi/controllers/omap_ssi_core.c:304:7: error: 'PRE_RATE_CHANGE' undeclared (first use in this function) This adds a Kconfig dependency to avoid the invalid configuration. Signed-off-by: Arnd Bergmann Fixes: 4bcf7414528a ("HSI: omap-ssi: add clk change support") Signed-off-by: Sebastian Reichel

HSI: omap-ssi: add clk change support

2016-05-02T19:56:25Z

This adds support for frequency changes of the SSI functional clock, which may occur due to DVFS. Acked-by: Pavel Machek Signed-off-By: Sebastian Reichel

HSI: omap_ssi: built omap_ssi and omap_ssi_port into one module

2016-05-02T19:56:21Z

Merge omap_ssi and omap_ssi_port into one module. This fixes problems with module cycle dependencies introduced by future patches. Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel

HSI: omap_ssi: fix removal of port platform device

2016-05-02T19:56:17Z

This avoids removal of the HSI port device when only the platform port device should be removed and clears the POPULATED bit in the DT node, so that a new platform device is created when the driver is probed again. Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel

HSI: omap_ssi: make sure probe stays available

2016-05-02T19:56:12Z

device can be unbind/rebind, so probe should stay available. Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel

HSI: omap_ssi: fix module unloading

2016-05-02T19:56:01Z

Removal of ssi controller debugfs directory must happen after the clients have been removed from it. Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel

HSI: omap_ssi_port: switch to gpiod API

2016-05-02T19:55:20Z

Simplify driver by switching to new gpio descriptor based API. Acked-by: Pavel Machek Signed-off-by: Sebastian Reichel

HSI: ssi-protocol: Use handshake logic from n950

2016-01-28T16:47:56Z

When using the ssi-protocol driver with the Nokia N950, the following error is thrown during modem powered up sequence. [13852.274993] port0: SSI error: 0x01 [13852.279205] ssi-protocol ssi-protocol: RX error detected [13852.284820] ssi-protocol ssi-protocol: Main state: 1 [13852.290069] ssi-protocol ssi-protocol: Recv state: 0 [13852.295288] ssi-protocol ssi-protocol: Send state: 0 [13852.300537] ssi-protocol ssi-protocol: CMT Offline [13852.305603] ssi-protocol ssi-protocol: Wake test 1 [13852.310638] ssi-protocol ssi-protocol: Data RX id: 0 [13852.315887] ssi-protocol ssi-protocol: Data TX id: 0 [13856.001464] ssi-protocol ssi-protocol: Watchdog trigerred [13856.007293] ssi-protocol ssi-protocol: Main state: 1 [13856.012542] ssi-protocol ssi-protocol: Recv state: 0 [13856.017761] ssi-protocol ssi-protocol: Send state: 0 [13856.023010] ssi-protocol ssi-protocol: CMT Offline [13856.028045] ssi-protocol ssi-protocol: Wake test 0 [13856.033111] ssi-protocol ssi-protocol: Data RX id: 0 [13856.038330] ssi-protocol ssi-protocol: Data TX id: 0 This patch fixes the issue by using the handshake setup from the Nokia N950 kernel. The new handshake sequence also works with the N900, so there is no need to differentiate between both modems. Tested-by: Aaro Koskinen Signed-off-by: Sebastian Reichel